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1. Investigating aldehyde and ketone compounds produced from indoor cooking emissions and assessing their health risk to human beings

Author:
Wei Zhang; Zhe Bai; Longbo Shi; Jung Hyun Son; Ling Li; Lina Wang; Jianmin Chen
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 389-398
ISSN:
1001-0742
Subject:
acetaldehyde; acetone; acrolein; air; air quality; environmental hazards; hazard characterization; human health; humans; inhalation exposure; risk; tomatoes; China
Abstract:
... Aldehyde and ketone compounds are ubiquitous in the air and prone to adverse effects on human health. Cooking emission is one of the major indoor sources. Aiming to evaluate health risks associated with inhalation exposure to aldehyde and ketone compounds, 13 carbonyl compounds (CCs) released from heating 5 edible oils, 3 seasonings, and 2 dishes were investigated in a kitchen laboratory. For the ...
DOI:
10.1016/j.jes.2022.05.033

2. Assessing Impacts of Additives on Particulate Matter and Volatile Organic Compounds Produced from the Grilling of Meat

Author:
Xingyun Liu; Wei Xing; Zhaoyang Xu; Xiaomin Zhang; Hui Zhou; Kezhou Cai; Baocai Xu; Conggui Chen
Source:
Foods 2022 v.11 no.6 pp. -
ISSN:
2304-8158
Subject:
Piper nigrum; acetaldehyde; acetone; aerosols; flavor; formaldehyde; garlic; meat; molecular weight; particulate emissions; particulates; volatile organic compounds
Abstract:
... Cooking fumes are an important source of volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds. The additive is wildly applied in grilling meat for flavor improvement. However, the effects of additives on cooking fumes emissions, such as volatile organic compounds (VOCs), particulate matter (PM), and carbonyl compounds, in meat grilling have not been studied. The impac ...
DOI:
10.3390/foods11060833

3. Atmospheric carbonyls in a heavy ozone pollution episode at a metropolis in Southwest China: Characteristics, health risk assessment, sources analysis

Author:
Jiemeng Bao; Hong Li; Zhenhai Wu; Xin Zhang; Hao Zhang; Yunfeng Li; Jun Qian; Junhui Chen; Liqun Deng
Source:
Journal of environmental sciences (China) 2022 v.113 pp. 40-54
ISSN:
1001-0742
Subject:
acetaldehyde; acetone; carcinogenicity; chronic exposure; formaldehyde; health effects assessments; human health; ozone; pollution; risk; China
Abstract:
... Ambient carbonyls were continuously observed in the field during a heavy ozone pollution episode in Chengdu, China from August 4 to August 19, 2019, and the pollution characteristics, atmospheric photochemical reactivity, human health risk, and sources of carbonyls were analyzed. Fifteen carbonyls were quantified with average total mixing ratios of 20.38 ppbv Formaldehyde (9.86 ppbv), acetone (4.4 ...
DOI:
10.1016/j.jes.2021.05.029

4. Cascade Reaction of Ethanol to Butadiene over Multifunctional Silica-Supported Ag and ZrO₂ Catalysts

Author:
Naomi Miyake; Gordon Brezicki; Robert J. Davis
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.2 pp. 1020-1035
ISSN:
2168-0485
Subject:
X-ray absorption spectroscopy; acetaldehyde; acetone; byproducts; carbon dioxide; catalysts; dehydrogenation; environmental impact; ethanol; green chemistry; hydrogenation; infrared spectroscopy; isomerization; isopropyl alcohol; pyridines; silica; ultraviolet-visible spectroscopy
Abstract:
... Although butadiene is currently a byproduct of naphtha cracking, interest in producing butadiene from biobased ethanol has increased because of the lower environmental impact of the ethanol to butadiene reaction. This work explores a multifunctional catalyst system composed of silica-supported Ag and ZrO₂ used for the cascade reaction of ethanol to butadiene at 573 K. The Ag and ZrO₂ components we ...
DOI:
10.1021/acssuschemeng.1c07459

5. Drought effects on volatile organic compound emissions from Scots pine stems

Author:
Kaisa Rissanen; Juho Aalto; Arthur Gessler; Teemu Hölttä; Andreas Rigling; Marcus Schaub; Jaana Bäck
Source:
Plant, cell and environment 2022 v.45 no.1 pp. 23-40
ISSN:
0140-7791
Subject:
Pinus sylvestris; acetaldehyde; acetone; adsorbents; atmospheric chemistry; drought; environment; forests; irrigation; methanol; monoterpenoids; summer; temperature; trees; volatile organic compounds
Abstract:
... Tree stems have been identified as sources of volatile organic compounds (VOCs) that play important roles in tree defence and atmospheric chemistry. Yet, we lack understanding on the magnitude and environmental drivers of stem VOC emissions in various forest ecosystems. Due to the increasing importance of extreme drought, we studied drought effects on the VOC emissions from mature Scots pine (Pinu ...
DOI:
10.1111/pce.14219

6. Effect of the addition of zeolites and silicate compounds on the composition of the smoke generated in the decomposition of Heet tobacco under inert and oxidative atmospheres

Author:
A. Marcilla; D. Berenguer; I. Martinez
Source:
Journal of analytical and applied pyrolysis 2022 v.164 pp. 105532
ISSN:
0165-2370
Subject:
acetaldehyde; acetone; formaldehyde; glycerol; nicotine; phenol; pyrolysis; silicates; smoke; tobacco; toxicity; zeolites
Abstract:
... Five potential additives, three zeolites and two silicates, have been studied for reducing the amount of compounds generated when smoking Heet tobacco. Pyrolysis-gas chromatography-mass spectrometry experiments (Py-GC/MS) show that this type of tobacco generates large amounts of nicotine and glycerol and compounds such as phenol, acetaldehyde, acetone and formaldehyde that are classified as harmfu ...
DOI:
10.1016/j.jaap.2022.105532

7. Emission characteristics and formation pathways of carbonyl compounds from the combustion of biomass and their cellulose, hemicellulose, and lignin at different temperatures and oxygen concentrations

Author:
Penghao Cheng; Zeyu Liu; Yanli Feng; Yong Han; Yu Peng; Junjie Cai; Yingjun Chen
Source:
Atmospheric environment 2022 v.291 pp. 119387
ISSN:
1352-2310
Subject:
Populus; acetaldehyde; acetone; biomass; cellulose; combustion; environment; formaldehyde; fuels; hemicellulose; lignin; oxygen; ozone; rice straw; temperature
Abstract:
... Carbonyl compounds are important precursors of free radicals, ozone (O₃), and secondary organic aerosols (SOA) in the atmosphere. Biomass burning is an important source of carbonyl compounds. To explore the formation pathway of carbonyl compounds from biomass burning and the effects of fuel composition and burning conditions, this study performed tube-furnace combustion experiments using three bio ...
DOI:
10.1016/j.atmosenv.2022.119387

8. Enhanced butanol production in Clostridium acetobutylicum by manipulating metabolic pathway genes

Author:
Guangqing Du; Youduo Wu; Wei Kang; Yongping Xu; Shuying Li; Chuang Xue
Source:
Process biochemistry 2022 v.114 pp. 134-138
ISSN:
1359-5113
Subject:
Clostridium acetobutylicum; acetaldehyde; acetoacetic acid; acetone; alcohol dehydrogenase; biobutanol; biochemical pathways; biosynthesis; butanol; fermentation; genes; histidine kinase; mutants
Abstract:
... Biobutanol is naturally produced by solventogenic clostridia during acetone-butanol-ethanol (ABE) fermentation, which is hampered by low butanol titer, yield and productivity. Here, Clostridium acetobutylicum ATCC 55025 and its robust mutant HKKO with histidine kinase genes cac3319/cac0323 knockout were metabolically engineered to eliminate acetone formation and improve butanol production. By knoc ...
DOI:
10.1016/j.procbio.2022.01.021

9. Formaldehyde, acrolein and other carbonyls in dwellings of university students. Levels and source characterization

Author:
Florentina Villanueva; Sonia Lara; Alberto Notario; Mariano Amo-Salas; Beatriz Cabañas
Source:
Chemosphere 2022 v.288 pp. 132429
ISSN:
0045-6535
Subject:
acetaldehyde; acetone; acrolein; air; benzaldehyde; college students; formaldehyde; principal component analysis; regression analysis; risk; urban areas; variance; winter; wood; Spain
Abstract:
... Fifteen carbonyl compounds were investigated in the living rooms and bedrooms of 25 university student flats in the urban area of Ciudad Real (Central Southern Spain) in wintertime. Carbonyls were sampled using Radiello ® passive samplers refilled in the laboratory according to the method described in ISO 16000-3 Standard. The most abundant carbonyls in the living rooms and bedrooms were formaldeh ...
DOI:
10.1016/j.chemosphere.2021.132429

10. Lactobacilli isolates as potential aroma producer starter cultures: Effects on the chemical, physical, microbial, and sensory properties of yogurt

Author:
Omer Faruk Celik; Hasan Temiz
Source:
Food bioscience 2022 v.48 pp. 101802
ISSN:
2212-4292
Subject:
Lactobacillus; acetaldehyde; acetone; acidity; flavor; odors; storage time; viscosity; yogurt
Abstract:
... Five lactobacilli isolates from traditional yogurts and a commercial isolate (LB) were utilized for yogurt production and weekly chemical, physical, microbial, and sensory analyzes were performed during the 21-day storage period. All yogurt samples possessed similar gross compositions, and no significant difference was detected between yogurt samples in terms of acidity and syneresis rates, togeth ...
DOI:
10.1016/j.fbio.2022.101802

11. Low-molecular-weight carbonyl volatile organic compounds on the North China Plain

Author:
Yu Huang; Xingru Li; Xi Chen; Wenjing Wang; Yinghong Wang; Zirui Liu; Guiqian Tang
Source:
Atmospheric environment 2022 v.275 pp. 119000
ISSN:
1352-2310
Subject:
acetaldehyde; acetone; air; air flow; anthropogenic activities; autumn; environment; formaldehyde; high performance liquid chromatography; mass transfer; ozone; photochemistry; pollution; summer; volatile organic compounds; winter; China
Abstract:
... To understand the photochemical pollution characteristics of low-molecular-weight carbonyl compounds on the North China Plain (NCP), 2,4-dinitrophenylhydrazine (DNPH) was used to sample low-molecular-weight carbonyl compounds in the atmosphere in Beijing, Tianjin, Shijiazhuang, Xianghe and Xinglong from June 2019 to January 2020, and the samples were then analyzed by a high-performance liquid chro ...
DOI:
10.1016/j.atmosenv.2022.119000

12. Multisize particulate matter and volatile organic compounds in arid and semiarid areas of Northwest China

Author:
Xi Zhou; Zhongqin Li; Tingjun Zhang; Feiteng Wang; Yan Tao; Xin Zhang
Source:
Environmental pollution 2022 v.300 pp. 118875
ISSN:
0269-7491
Subject:
acetaldehyde; acetone; ammonium; benzene; calcium; dust; ethanol; formic acid; methanol; models; nitrates; organic matter; particulates; pollution; spring; styrene; sulfates; toluene; volatile organic compounds; water solubility; xylene; China
Abstract:
... To investigate the chemical components, sources, and interactions of particulate matter (PM) and volatile organic compounds (VOCs), a field campaign was implemented during the spring of 2018 in nine cities in northwestern (NW) China. PM was mainly contributed by organic matter and water-soluble inorganic ions (41% for PM₁₀ and approximately 60% for PM₂.₅ and PM₁). Two typical haze patterns were ob ...
DOI:
10.1016/j.envpol.2022.118875

13. Pilot study on gaseous pollution removal efficiency of acid scrubbing in a broiler house

Author:
Tiantian Cao; Yunhao Zheng; Yu Zhang; Yue Wang; Qunxin Cong; Yuanhao Wang; Hongmin Dong
Source:
Agriculture, ecosystems & environment 2022 v.335 pp. 108021
ISSN:
0167-8809
Subject:
acetaldehyde; acetone; agriculture; air quality; ammonia; aqueous solutions; carbon dioxide; dimethyl disulfide; dimethyl sulfide; environment; equipment; ethane; greenhouses; human health; methane; methanethiol; models; odors; pH; pollution; pollution control; poultry housing; poultry industry; propane; response surface methodology; volatile organic compounds
Abstract:
... The poultry industry is a major source of odor pollution and has received significant attention because of its impact on air quality and human health. Acid scrubbing has been widely used in livestock houses to remove ammonia (NH₃), but this method has not been optimized for other odorous compounds, such as volatile organic compounds (VOCs). In this study, on-farm acid scrubbing equipment was opera ...
DOI:
10.1016/j.agee.2022.108021

14. Qualitative and quantitative determination of butanol in latex paint by fast gas chromatography proton transfer reaction mass spectrometry

Author:
Qin Sun; Xun Bao; Qu Liang; Wei Xu; Qiangling Zhang; Xue Zou; Chaoqun Huang; Chengyin Shen; Yannan Chu
Source:
Journal of chromatography 2022 v.1676 pp. 463210
ISSN:
0021-9673
Subject:
acetaldehyde; acetone; acetonitrile; benzene; butanol; equipment; gas chromatography-mass spectrometry; headspace analysis; humans; latex; methanol; quantitative analysis; rapid methods; solvents; toxicity; volatile organic compounds; working conditions
Abstract:
... Butanol is a common organic solvent used in latex paint, and one of its isomers, tert-butanol, is toxic and can cause potential harm to the human body. Therefore, it is of great significance to develop a qualitative and quantitative detection method for butanol isomers. In this study, we combined the advantages of rapid detection of proton transfer reaction mass spectrometry (PTR-MS) with the sepa ...
DOI:
10.1016/j.chroma.2022.463210

15. Revealing the mechanism of high water resistant and excellent active of CuMn oxide catalyst derived from Bimetal-Organic framework for acetone catalytic oxidation

Author:
Lei Wang; Yonggang Sun; Yinbo Zhu; Juan Zhang; Jie Ding; Jingdan Gao; Wenxin Ji; YuanYuan Li; Liqiong Wang; Yulong Ma
Source:
Journal of colloid and interface science 2022 v.622 pp. 577-590
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; acetaldehyde; acetates; acetone; active oxygen species; carbon dioxide; catalysts; catalytic activity; dissociation; formates; humidity; oxidation; water vapor
Abstract:
... Environmental H₂O is an influential factor in the low-temperature catalytic oxidation of volatile organic compounds (VOCs), and it significantly impacts the reaction process and mechanism. Here, a series of rod-like Cu-Mn oxides were synthesised by pyrolysing Cu/Mn-BTC for acetone oxidation. The results confirm that the formation of multiphase interfaces have more excellent catalytic performance c ...
DOI:
10.1016/j.jcis.2022.04.155

16. Spatiotemporal footprints of odor compounds in megacity’s food waste streams and policy implication

Author:
Liangmao Zhang; Binghan Wang; Zijiang Wang; Kaiyi Li; Ru Fang; Yinglong Su; Dong Wu; Bing Xie
Source:
Journal of hazardous materials 2022 v.437 pp. 129423
ISSN:
0304-3894
Subject:
acetaldehyde; acetic acid; acetone; air; ambient temperature; cities; food waste; human health; humidity; issues and policy; methylene chloride; multidimensional scaling; odors; seasonal variation; China
Abstract:
... Odor pollution is one of the most critical issues in food waste (FW) recycling and has significant implications for human health. However, knowledge of their occurrence and spatiotemporally dynamic in urban FW streams is limited, making it not conducive to implement targeted odor management. This work followed the occurrence of 81 odor compounds (OCs) in nine FW-air environments along the Shanghai ...
DOI:
10.1016/j.jhazmat.2022.129423

17. Spatiotemporal patterns and ozone sensitivity of gaseous carbonyls at eleven urban sites in southeastern China

Author:
Xin Zhang; Zhenhai Wu; Zhen He; Xuefen Zhong; Fang Bi; Yunfeng Li; Rui Gao; Hong Li; Wenxing Wang
Source:
Science of the total environment 2022 v.824 pp. 153719
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; air; coasts; environment; formaldehyde; industry; mountains; nitrogen; ozone; particulate emissions; photochemistry; pollution; troposphere; volatile organic compounds; China; Taiwan
Abstract:
... Gaseous carbonyls are essential trace gases for tropospheric chemistry and contribute significantly to the formation of ambient air ozone (O₃) in densely populated regions, especially in China. Pollution characterization and the analysis of O₃, nitrogen oxides, and volatile organic compounds (O₃-NOX-VOCs) sensitivities of carbonyls were investigated from October 22 to 28, 2018 at eleven urban site ...
DOI:
10.1016/j.scitotenv.2022.153719

18. Synthesis of Oxygen-Containing Precursors of Aviation Fuel via Carbonylation of the Aqueous Bio-oil Fraction Followed by C–C Coupling

Author:
Jiayuan Sun; Shanshan Shao; Xinggang Hu; Xiaohua Li; Huiyan Zhang
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.33 pp. 11030-11040
ISSN:
2168-0485
Subject:
acetaldehyde; acetone; biofuels; biomass; condensation reactions; cyclohexanones; furfural; green chemistry; hydrogenation; phenol; propionic acid; pyrolysis
Abstract:
... The aqueous fraction of bio-oil from biomass fast pyrolysis mainly contains low-molecular-weight oxygenates such as carboxylic acids, ketones, aldehydes, phenols, and furans. In this study, the full components of aqueous bio-oil are directionally converted into carbonyl groups such as aldehydes and ketones, and then the oxygen-containing precursors of aviation fuel are prepared through coupling, f ...
DOI:
10.1021/acssuschemeng.2c03379

19. Traffic, transport, and vegetation drive VOC concentrations in a major urban area in Texas

Author:
Sujan Shrestha; Subin Yoon; Matthew H. Erickson; Fangzhou Guo; Manisha Mehra; Alexander A.T. Bui; Benjamin C. Schulze; Alexander Kotsakis; Conner Daube; Scott C. Herndon; Tara I. Yacovitch; Sergio Alvarez; James H. Flynn; Robert J. Griffin; George P. Cobb; Sascha Usenko; Rebecca J. Sheesley
Source:
Science of the total environment 2022 v.838 pp. 155861
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; air quality; environment; ethane; industry; isoprene; methane; metropolitan areas; oils; photooxidation; pollution; traffic; vegetation; Texas
Abstract:
... The population of Texas has increased rapidly in the past decade. The San Antonio Field Study (SAFS) was designed to investigate ozone (O₃) production and precursors in this rapidly changing, sprawling metropolitan area. There are still many questions regarding the sources and chemistry of volatile organic compounds (VOCs) in urban areas like San Antonio which are affected by a complex mixture of ...
DOI:
10.1016/j.scitotenv.2022.155861

20. UV–vis spectroscopic detection of formaldehyde and its analogs: A convenient and sensitive methodology

Author:
Chenyao Yuan; Jiayan Pu; Donglei Fu; Yuru Min; Lei Wang; Jingquan Liu
Source:
Journal of hazardous materials 2022 v.438 pp. 129457
ISSN:
0304-3894
Subject:
acetaldehyde; acetone; benzaldehyde; byproducts; chemical species; formaldehyde; hydroxylamine; leukemia; liquids; manufacturing; pathogens; ultraviolet-visible spectroscopy
Abstract:
... Formaldehyde is deemed to be an indispensable industrial product that has been widely applied in manufacture of resins, drugs, building materials, etc. It has been widely accepted that, nevertheless, residual formaldehyde will cause pathogen reactions, even leading to cancers like leukemia. Thus, a facile and efficient approach has been designed to achieve the determination of formaldehyde by ultr ...
DOI:
10.1016/j.jhazmat.2022.129457

21. Volatile organic compound emissions from subarctic mosses and lichens

Author:
Ingvild Ryde; Cleo L. Davie-Martin; Tao Li; Mads P. Naursgaard; Riikka Rinnan
Source:
Atmospheric environment 2022 v.290 pp. 119357
ISSN:
1352-2310
Subject:
Cladonia; Hylocomium splendens; Nephroma; Pleurozium schreberi; Sphagnum; acetaldehyde; acetone; climate; climate change; ecosystems; environment; gas chromatography-mass spectrometry; lichens; molecular weight; mosses and liverworts; volatile organic compounds
Abstract:
... Plant volatile organic compound (VOC) emissions can drive important climate feedbacks. Although mosses and lichens are important components of plant communities, their VOC emissions are poorly understood. It is crucial to obtain more knowledge on moss and lichen VOCs to improve ecosystem VOC emission models. This is especially relevant at high latitudes, where mosses and lichens are abundant and V ...
DOI:
10.1016/j.atmosenv.2022.119357

22. The use of yeast‐rich kefir grain as a starter culture in bread making

Author:
Fatma Ataç; Bilge Ertekin Filiz; Zeynep B. Guzel‐Seydim
Source:
Journal of food processing and preservation 2022 v.46 no.5 pp. e15242
ISSN:
0145-8892
Subject:
Kluyveromyces marxianus; Saccharomyces cerevisiae; acetaldehyde; acetic acid; acetone; bakers yeast; breadmaking quality; ethanol; kefir; lactic acid; sourdough; sourdough bread; starter cultures
Abstract:
... To investigate the use of yeasts and lactic acid bacteria from natural kefir grain in bread making and its effects on dough and bread quality. The kefir grains were treated with different food‐based solutions to enrich the yeast content. Three kefir samples were produced with the treated grains (KAL and SIT) and the control (KEF) kefir grains (untreated). The yeasts isolated from the kefir samples ...
DOI:
10.1111/jfpp.15242

23. Atmospheric chemistry of ketones: Reaction of OH radicals with 2-methyl-3-pentanone, 3-methyl-2-pentanone and 4-methyl-2-pentanone

Author:
Yangang Ren; El Mehdi El Baramoussi; Véronique Daële; Abdelwahid Mellouki
Source:
Science of the total environment 2021 v.780 pp. 146249
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; atmospheric chemistry; environment; formaldehyde; industry; temperature
Abstract:
... This work reports new kinetic and mechanistic information on the atmospheric chemistry of ketones. Both absolute and relative rate methods were used to determine the rate constants for OH reactions with 2-methyl-3-pentanone (2M3P), 3-methyl-2-pentanone (3M2P) and 4-methyl-2-pentanone (4M2P), three widely used compounds in the industry. This work constitutes the first temperature dependence study o ...
DOI:
10.1016/j.scitotenv.2021.146249

24. Carbon Isotopic Analysis of Atmospheric Carbonyls Via Cysteamine Derivatization

Author:
Song Jun Guo
Source:
Water, air, and soil pollution 2021 v.232 no.8 pp. 314
ISSN:
0049-6979
Subject:
acetaldehyde; acetone; air; carbon; cysteamine; derivatization; formaldehyde; isotope fractionation; isotope labeling; photooxidation; roadsides; soil pollution; water
Abstract:
... Isotopic effects of carbonyls were investigated using the simulation reactions of carbonyls with the cysteamine derivatization. Furthermore, variations of carbon isotopic for three dominant carbonyls including formaldehyde, acetaldehyde, and acetone in the roadside air of Nanning were measured using a developed method. It was found that there was a small difference in δ¹³C values (0.04 to 0.50‰) b ...
DOI:
10.1007/s11270-021-05176-2

25. Characteristics and sources of volatile organic compounds during pollution episodes and clean periods in the Beijing-Tianjin-Hebei region

Author:
Suding Yang; Xin Li; Mengdi Song; Ying Liu; Xuena Yu; Shiyi Chen; Sihua Lu; Wenjie Wang; Yiming Yang; Limin Zeng; Yuanhang Zhang
Source:
Science of the total environment 2021 v.799 pp. 149491
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; acetylene; air pollution; air quality; coal; combustion; environment; ethane; ethylene; propylene; toluene; volatile organic compounds; winter; China
Abstract:
... Volatile organic compounds (VOCs) play an important role in air pollution. In this study, we conducted comprehensive field observations to investigate wintertime air pollution in Beijing, Wangdu, and Dezhou in the Beijing-Tianjin-Hebei region during 2017 and 2018. The average VOC concentrations of the three sites were 35.6 ± 26.6, 70.9 ± 56.3, and 50.5 ± 40.0 ppbv, respectively. The species with t ...
DOI:
10.1016/j.scitotenv.2021.149491

26. Chemical changes in thirdhand smoke associated with remediation using an ozone generator

Author:
Xiaochen Tang; Noelia Ramírez González; Marion L. Russell; Randy L. Maddalena; Lara A. Gundel; Hugo Destaillats
Source:
Environmental research 2021 v.198 pp. 110462
ISSN:
0013-9351
Subject:
acetaldehyde; acetone; aerosols; byproducts; derivatization; desorption; fabrics; fiberglass; fire damage; formaldehyde; liquid chromatography; nicotine; nitrosamines; ozonation; ozone; particulates; photometry; remediation; research; second hand smoke; smoke; volatile organic compounds
Abstract:
... Ozonation is a common remediation approach to eliminate odors from mold, tobacco and fire damage in buildings. Little information exists to: 1) assess its effectiveness; 2) provide guidance on operation conditions; and 3) identify potential risks associated with the presence of indoor ozone and ozonation byproducts. The goal of this study is to evaluate chemical changes in thirdhand smoke (THS) ae ...
DOI:
10.1016/j.envres.2020.110462

27. Combined UV-irradiation and pyrolysis-GC/MS approach for evaluating the deterioration behavior of ethylene vinyl acetate

Author:
Kanako Yamada; Shogo Kumagai; Toshikazu Shiratori; Tomohito Kameda; Yuko Saito; Atsushi Watanabe; Chuichi Watanabe; Norio Teramae; Toshiaki Yoshioka
Source:
Polymer degradation and stability 2021 v.190 pp. 109623
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; acetaldehyde; acetic acid; acetone; anhydrides; carbon dioxide; degradation; ethylene-vinyl acetate; irradiation; lactones; pyrolysis gas chromatography; thermal stability; thermogravimetry; ultraviolet radiation
Abstract:
... Ethylene vinyl acetate (EVA), commonly used to encapsulate photovoltaic (PV) modules, deteriorates on prolonged exposure to sunlight. In this work, fresh and deteriorated EVA samples prepared by UV irradiation (500 W m⁻²) over different periods (0–168 h) are characterized by conventional elemental analysis, microscopic observations, Fourier transform infrared (FT-IR) spectroscopy, and thermogravim ...
DOI:
10.1016/j.polymdegradstab.2021.109623

28. Cross-correlations of Biogenic Volatile Organic Compounds (BVOC) emissions typify different phenological stages and stressful events in a Mediterranean Sorghum plantation

Author:
Antonio Manco; Federico Brilli; Daniela Famulari; Daniele Gasbarra; Beniamino Gioli; Luca Vitale; Paul di Tommasi; Benjamin Loubet; Carmen Arena; Vincenzo Magliulo
Source:
Agricultural and forest meteorology 2021 v.303 pp. 108380
ISSN:
0168-1923
Subject:
Sorghum bicolor subsp. drummondii; aboveground biomass; acetaldehyde; acetic acid; acetone; adults; canopy; carbon dioxide; climate change; forests; formic acid; grain sorghum; meteorology; methanol; monoterpenoids; net ecosystem exchange; phenology; plantlets; soil; volatile organic compounds; Mediterranean region; Southern European region
Abstract:
... Climate change will affect the growing season and increase the occurrence of extreme stressful events, thus altering crop phenological phases and the associated emission of biogenic volatile organic compounds (BVOC). BVOC exchange has been poorly investigated in field crops, especially in the Mediterranean area. In this study we report continuous measurements of BVOC fluxes and CO₂ net ecosystem e ...
DOI:
10.1016/j.agrformet.2021.108380

29. Effect of senescence on biogenic volatile organic compound fluxes in wheat plants

Author:
Lais Gonzaga Gomez; Benjamin Loubet; Florence Lafouge; Raluca Ciuraru; Sandy Bsaibes; Julien Kammer; Pauline Buysse; Brigitte Durand; Jean-Christophe Gueudet; Olivier Fanucci; Olivier Zurfluh; Céline Decuq; François Truong; Valérie Gros; Christophe Boissard
Source:
Atmospheric environment 2021 v.266 pp. 118665
ISSN:
1352-2310
Subject:
acetaldehyde; acetone; automation; crops; ecosystems; eddy covariance; environment; methanol; phenology; seed maturation; spectrometers; temperature; volatile organic compounds; wheat
Abstract:
... Exchanges of biogenic volatile organic compounds (BVOC) between plants and the atmosphere are likely to vary, in amount and composition, between different plant species but also for a single plant during its development. However, the effect of plant development stages, including senescence, on BVOC exchanges remains poorly investigated, especially in the case of crop plants. We investigated the BV ...
DOI:
10.1016/j.atmosenv.2021.118665

30. Efficacious CO₂ Photoconversion to C2 and C3 Hydrocarbons on Upright SnS–SnS₂ Heterojunction Nanosheet Frameworks

Author:
Chun-Yuan Wu; Chia-Ju Lee; Yi-Hsing Yu; Hui-Wen Tsao; Yen-Hsun Su; Chao-Cheng Kaun; Jen-Sue Chen; Jih-Jen Wu
Source:
ACS applied materials & interfaces 2021 v.13 no.4 pp. 4984-4992
ISSN:
1944-8252
Subject:
acetaldehyde; acetone; activation energy; adsorption; carbon dioxide; crystal structure; nanosheets; oxidation; photocatalysis; photocatalysts
Abstract:
... In this work, SnS–SnS₂ heterostructured upright nanosheet frameworks are constructed on FTO substrates, which demonstrate promising photocatalytic performances for the conversion of CO₂ and water to C2 (acetaldehyde) and C3 (acetone) hydrocarbons without H₂ formation. With post annealing in designated atmospheres, the photocatalytic activity of the SnS–SnS₂ heterostructured nanosheet framework is ...
DOI:
10.1021/acsami.0c18420

31. Efficient catalytic degradation of toluene at a readily prepared Mn-Cu catalyst: Catalytic performance and reaction pathway

Author:
Jian-Rong Li; Wan-Peng Zhang; Chang Li; Chi He
Source:
Journal of colloid and interface science 2021 v.591 pp. 396-408
ISSN:
0021-9797
Subject:
acetaldehyde; acetic acid; acetone; benzaldehyde; benzene; benzoquinones; benzyl alcohol; catalysts; catalytic activity; coprecipitation; durability; ethanol; formaldehyde; methanol; mineralization; oxidation; oxygen; phenol; temperature; toluene
Abstract:
... Fabricating of economical transitional metal oxide-based materials with satisfied low-temperature catalytic performance and application perspective is still a challenge in deep degradation of VOCs. Here, Mn-Cu bimetallic oxides were facilely prepared by one-step hydrothermal-redox method, which displayed much higher catalytic activity in toluene oxidation than those synthesized by hydrolysis-drive ...
DOI:
10.1016/j.jcis.2021.01.096

32. Experimental study of nitropropane pyrolysis with molecular-beam mass spectrometry and tunable synchrotron VUV photoionization. Part I. The flow reactor pyrolysis of 1-nitropropane

Author:
Yongdi He; Jinou Song; Yuan Zhuang; Jiuzhong Yang; Zhongwei Meng; Qiang Xu
Source:
Journal of analytical and applied pyrolysis 2021 v.155 pp. 105051
ISSN:
0165-2370
Subject:
acetaldehyde; acetone; butanes; dehydrogenation; hydrogen; hydrogen cyanide; mass spectrometry; pyrolysis; quantum mechanics; temperature
Abstract:
... An experimental study of 1-nitropropane (1-NP) pyrolysis was performed in a flow reactor at low pressure (4.0 kPa) in the temperature range of 623–973 K. The pyrolysis species was detected with the tunable synchrotron vacuum ultraviolet (VUV) photoionization and molecular-beam mass spectrometry (MBMS). Species from m/z = 15–87 were identified from near-threshold photoionization efficiency (PIE) sp ...
DOI:
10.1016/j.jaap.2021.105051

33. Exploratory analysis of the presence of 14 carbonyl compounds in bottled mineral water in polyethylene terephthalate (PET) containers

Author:
Ingrid Marcela Melo Cardozo; Jeancarlo Pereira dos Anjos; Franciele Oliveira Campos da Rocha; Jailson B. de Andrade
Source:
Food chemistry 2021 v.365 pp. 130475
ISSN:
0308-8146
Subject:
acetaldehyde; acetone; acrolein; benzaldehyde; chemometrics; food chemistry; formaldehyde; gasification; mass spectrometry; mineral water; polyethylene terephthalates; principal component analysis; ultrafast liquid chromatography
Abstract:
... Carbonyl compounds (CCs) can migrate from bottles to mineral water because of plastic degradation. An exploratory analysis of the presence a significant number of CCs (14) in bottled mineral water with and without gas in polyethylene terephthalate (PET) containers was performed using ultra-fast liquid chromatography coupled to mass spectrometry (UFLC-MS). The data from the analysis was submitted t ...
DOI:
10.1016/j.foodchem.2021.130475

34. Gas-particle partitioning of carbonyls and its influencing factors in the urban atmosphere of Zhengzhou, China

Author:
Jia'nan Cui; Mei Sun; Lei Wang; Junyu Guo; Guiying Xie; Jianbo Zhang; Ruiqin Zhang
Source:
Science of the total environment 2021 v.751 pp. 142027
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; aerosols; ammonium; atmospheric chemistry; environment; formaldehyde; hydroxylamine; liquids; nitrates; relative humidity; sulfates; temperature; water content; China
Abstract:
... Despite their profound roles in atmospheric chemistry and health concerns, the gas-particle partitioning of carbonyl compounds and its influencing factors in the ambient atmosphere are poorly elucidated. In this work, a reliable method using a denuder/filter-pack system coated with the derivative reagent, O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) was developed for the simultaneous colle ...
DOI:
10.1016/j.scitotenv.2020.142027

35. Gridded 1 km × 1 km emission inventory for paddy stubble burning emissions over north-west India constrained by measured emission factors of 77 VOCs and district-wise crop yield data

Author:
Ashish Kumar; Haseeb Hakkim; Baerbel Sinha; Vinayak Sinha
Source:
Science of the total environment 2021 v.789 pp. 148064
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; aerosols; air quality; annuals; benzene; carbon dioxide; climate; crop yield; environment; inventories; ozone; paddies; satellites; smog pollution; smoke; stubble; traffic; volatile organic compounds; India; Indo-Gangetic Plain
Abstract:
... Every year in the post-monsoon season, ~1.7 billion tons of paddy stubble is burnt openly in the Indo-Gangetic Plain (IGP) producing persistent smog and air quality deterioration that affects the entire IGP. Information concerning the identity, amounts and spatial distribution of volatile organic compounds (VOCs) which drive ozone and aerosol formation is still largely unknown as existing global e ...
DOI:
10.1016/j.scitotenv.2021.148064

36. Heatwave frequency and seedling death alter stress-specific emissions of volatile organic compounds in Aleppo pine

Author:
Benjamin Birami; Ines Bamberger; Andrea Ghirardo; Rüdiger Grote; Almut Arneth; Elizabeth Gaona-Colmán; Daniel Nadal-Sala; Nadine K. Ruehr
Source:
Oecologia 2021 v.197 no.4 pp. 939-956
ISSN:
0029-8549
Subject:
Pinus halepensis; acetaldehyde; acetone; death; drought; gas exchange; heat stress; methanol; methyl salicylate; monoterpenoids; mortality; plant stress; seedlings; soil water content; temperature; transpiration; volatile organic compounds
Abstract:
... Biogenic volatile organic compounds (BVOC) play important roles in plant stress responses and can serve as stress indicators. While the impacts of gradual environmental changes on BVOCs have been studied extensively, insights in emission responses to repeated stress and recovery are widely absent. Therefore, we studied the dynamics of shoot gas exchange and BVOC emissions in Pinus halepensis seedl ...
DOI:
10.1007/s00442-021-04905-y

37. High gaseous carbonyl concentrations in the upper boundary layer in Shijiazhuang, China

Author:
Yiming Wang; Yinghong Wang; Guiqian Tang; Yang Yang; Xingru Li; Dan Yao; Shuang Wu; Yanyu Kang; Meng Wang; Yuesi Wang
Source:
Science of the total environment 2021 v.799 pp. 149438
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; air; air pollution; environment; formaldehyde; high performance liquid chromatography; models; summer; troposphere; volatile organic compounds; winter; China
Abstract:
... Oxygenated volatile organic compounds (OVOCs) are important precursors of secondary air pollutants. However, knowledge of the vertical characteristics of OVOCs in the lower troposphere is lacking. Pairs of OVOCs samples were simultaneously collected via 2,4-dinitrophenylhydrazine (DNPH) near the ground and in the upper boundary layer (at 500 m in winter and 600 m in summer) with a tethered balloon ...
DOI:
10.1016/j.scitotenv.2021.149438

38. Investigation of colorimetric biosensor array based on programable surface chemistry of M13 bacteriophage towards artificial nose for volatile organic compound detection: From basic properties of the biosensor to practical application

Author:
Jong-Min Lee; Yujin Lee; Vasanthan Devaraj; Thanh Mien Nguyen; Ye-Ji Kim; You Hwan Kim; Chuntae Kim; Eun Jung Choi; Dong-Wook Han; Jin-Woo Oh
Source:
Biosensors & bioelectronics 2021 v.188 pp. 113339
ISSN:
0956-5663
Subject:
acetaldehyde; acetone; bacteriophages; biosensors; chemistry; cluster analysis; color; colorimetry; density functional theory; electronic nose; ethanol; ethyl acetate; explosives; freshness; fruits; genetic engineering; geometry; peaches; volatile organic compounds
Abstract:
... Various threats such as explosives, drugs, environmental hormones, and spoiled food manifest themselves with the presence of volatile organic compounds (VOCs) in our environment. In order to recognize and respond to these threats early, the demand for highly sensitive and selective electronic noses is increasing. The M13 bacteriophage-based optoelectronic nose is an excellent candidate to meet all ...
DOI:
10.1016/j.bios.2021.113339

39. Kinetic and mechanistic study of the gas-phase reaction of ozone with γ-terpinene

Author:
Layal Fayad; Cécile Coeur; Thomas Fagniez; Xavier Secordel; Nicolas Houzel; Gaël Mouret
Source:
Atmospheric environment 2021 v.246 pp. 118073
ISSN:
1352-2310
Subject:
acetaldehyde; acetic acid; acetone; atmospheric pressure; cyclohexanes; environment; formaldehyde; formic acid; metrology; oxidation; ozone; ozonolysis; reaction mechanisms; relative humidity; stainless steel; France
Abstract:
... The ozone reaction of γ-terpinene (1-isopropyl-4-methyl-1,4-cyclohexadiene), a monoterperne emitted by Elm, Cypress, Waterhickory and Maple trees, has been investigated at 294 ± 2 K, atmospheric pressure and under dry conditions (relative humidity, RH < 2%) in two simulation chambers of the LPCA laboratory in Dunkerque (France): CHARME (CHamber for the Atmospheric Reactivity and the Metrology of t ...
DOI:
10.1016/j.atmosenv.2020.118073

40. Kinetic and reaction mechanism of generated by-products in a photocatalytic oxidation reactor: Model development and validation

Author:
Mojtaba Malayeri; Chang-Seo Lee; Jianjun Niu; Jiping Zhu; Fariborz Haghighat
Source:
Journal of hazardous materials 2021 v.419 pp. 126411
ISSN:
0304-3894
Subject:
acetaldehyde; acetic acid; acetone; air pollution; carbon dioxide; commercialization; ethanol; formaldehyde; human health; irradiation; mass transfer; mineralization; model validation; models; oxidation; photocatalysis; pollutants; reaction mechanisms; relative humidity; risk; silica
Abstract:
... Photocatalytic oxidation is a promising technology to control air pollution. However, the formation of hazardous by-products hinders the commercialization application of this technology. This paper reports the development of a novel by-products predictive model considering the mass transfer of the pollutant in the gas phase and kinetic reaction in the solid phase. Two challenge compounds from keto ...
DOI:
10.1016/j.jhazmat.2021.126411

41. Liquid-Phase Epoxidation of Propylene with H₂O₂ over TS-1 Zeolite: Impurity Formation and Inhibition Study

Author:
Gang Wang; Yue Li; Long Lin; Yitong Guo; Chao Zhang; Gang Li; Zhaochi Feng; Hongchen Guo
Source:
Industrial & engineering chemistry process design and development 2021 v.60 no.32 pp. 12109-12122
ISSN:
1520-5045
Subject:
acetaldehyde; acetone; adsorption; catalysts; epoxidation reactions; hydrolysis; methanol; oxidation; process design; propylene; propylene oxide; solvents; solvolysis; temperature; titanium; zeolites
Abstract:
... The liquid-phase epoxidation of propylene with H₂O₂ over titanium silicalite-1 (TS-1) zeolite was investigated in detail with a focus on the formation and inhibition of various trace impurities like acetaldehyde, propionaldehyde, acetone, hydroxyacetone, acetals, esters, etc. The results showed that the formation of trace impurities involved the transformation of propylene oxide (PO), its oxidatio ...
DOI:
10.1021/acs.iecr.1c02087

42. Long-term observations of oxygenated volatile organic compounds (OVOCs) in an urban atmosphere in southern China, 2014–2019

Author:
Shi-Yong Xia; Chuan Wang; Bo Zhu; Xue Chen; Ning Feng; Guang-He Yu; Xiao-Feng Huang
Source:
Environmental pollution 2021 v.270 pp. 116301
ISSN:
0269-7491
Subject:
acetaldehyde; acetic acid; acetone; aerosols; air pollution; biomass; dry season; formic acid; methanol; ozone; pollution control; spectroscopy; temporal variation; volatile organic compounds; wet season; China
Abstract:
... Oxygenated volatile organic compounds (OVOCs) are important precursors and intermediate products of atmospheric photochemical reactions, which can promote the formation of secondary pollutants such as ozone (O₃) and secondary organic aerosol (SOA). However, there have been few studies on the sources of and long-term variation in ambient OVOCs. This study combined sensitive, near real-time measurem ...
DOI:
10.1016/j.envpol.2020.116301

43. Oxidizing Ethanol and 2-Propanol by Hypochlorous Acid Generated from Chloride Ions on HₓWO₃ Photoelectrodes

Author:
Andrew G. Breuhaus-Alvarez; Siqi Li; Nathaniel Z. Hardin; Bart M. Bartlett
Source:
Journal of physical chemistry 2021 v.125 no.48 pp. 26307-26312
ISSN:
1932-7455
Subject:
acetaldehyde; acetic acid; acetone; calcium hypochlorite; ethanol; isopropyl alcohol; lighting; nuclear magnetic resonance spectroscopy; oxidation; pH; photoelectrodes; physical chemistry; semiconductors
Abstract:
... Photoelectrochemically oxidizing aqueous chloride electrolytes (1 M NaCl, pH 3) to hypochlorous acid proceeds on HₓWO₃ semiconducting photoelectrodes using 405 nm illumination at 100 mW/cm² with 1.0 V versus Ag/AgCl constant potential chronoamperometry. The hypochlorous acid serves as an oxidation agent upon adding 100 mM ethanol or 2-propanol into the solution. ¹H NMR spectroscopy shows that 90% ...
DOI:
10.1021/acs.jpcc.1c06286

44. Phenological stage of tundra vegetation controls bidirectional exchange of BVOCs in a climate change experiment on a subarctic heath

Author:
Nanna Baggesen; Tao Li; Roger Seco; Thomas Holst; Anders Michelsen; Riikka Rinnan
Source:
Global change biology 2021 v.27 no.12 pp. 2928-2944
ISSN:
1354-1013
Subject:
acetaldehyde; acetone; air; ambient temperature; biomass; circadian clocks; climate change; diurnal variation; ecosystems; field experimentation; isoprene; light intensity; mass spectrometry; methanol; monoterpenoids; phenology; photosynthetically active radiation; plant litter; sesquiterpenoids; soil water; species diversity; tundra; volatile organic compounds; Sweden
Abstract:
... Traditionally, biogenic volatile organic compound (BVOC) emissions are often considered a unidirectional flux, from the ecosystem to the atmosphere, but recent studies clearly show the potential for bidirectional exchange. Here we aimed to investigate how warming and leaf litter addition affect the bidirectional exchange (flux) of BVOCs in a long‐term field experiment in the Subarctic. We also ass ...
DOI:
10.1111/gcb.15596

45. Polydopamine film coating on polyurethane foams as efficient “sunscreen”. Application to photocatalysis under UV irradiation

Author:
Florian Ponzio; Julien Kelber; Laura Birba; Kamal Rekab; Vincent Ritleng; Loïc Jierry; David Edouard
Source:
Environmental technology & innovation 2021 v.23 pp. 101618
ISSN:
2352-1864
Subject:
acetaldehyde; acetone; air; environmental technology; foams; formic acid; heptane; mineralization; photocatalysis; polyurethanes; tensile strength; toluene; ultraviolet radiation; volatile organic compounds
Abstract:
... Polyurethanes are used in a large variety of commercial and technical applications, due to their high tensile strength, chemical resistance, good process ability and good mechanical properties. In particular, polyurethane open cell foams appear as ideal candidates to design original photoreactors. However, due to their high sensitivity to UV light, polyurethane foams can be not used directly as st ...
DOI:
10.1016/j.eti.2021.101618

46. Process-based VOCs source profiles and contributions to ozone formation and carcinogenic risk in a typical chemical synthesis pharmaceutical industry in China

Author:
Nana Cheng; Deji Jing; Cheng Zhang; Ziwei Chen; Wei Li; Sujing Li; Qiaoli Wang
Source:
Science of the total environment 2021 v.752 pp. 141899
ISSN:
0048-9697
Subject:
acetaldehyde; acetone; acetylene; alkenes; carcinogenicity; chloroform; environment; ethanol; methanol; methylene chloride; ozone; pharmaceutical industry; pollution; risk; river deltas; synthesis; toluene; China; Yangtze River
Abstract:
... The chemical synthesis pharmaceutical industry plays an important role in VOCs emissions from industrial sources, which has caused increasing concern. In this study, the process-based pollution characteristics of VOCs from the chemical synthesis pharmaceutical industry were investigated in the Yangtze River Delta, China. A total of 16 samples were collected from 12 process units (including 5 produ ...
DOI:
10.1016/j.scitotenv.2020.141899

47. Production of the biocommodities butanol and acetone from methanol with fluorescent FAST-tagged proteins using metabolically engineered strains of Eubacterium limosum

Author:
Maximilian Flaiz; Gideon Ludwig; Frank R. Bengelsdorf; Peter Dürre
Source:
Biotechnology for biofuels 2021 v.14 no.1 pp. 117
ISSN:
1754-6834
Subject:
Eubacterium limosum; absorption; acetaldehyde; acetoacetic acid; acetogens; acetone; alcohol dehydrogenase; biofuels; biotechnology; butanol; carbon; fluorescence; genes; greenhouse gases; metabolic engineering; methanol; synthesis gas
Abstract:
... BACKGROUND: The interest in using methanol as a substrate to cultivate acetogens increased in recent years since it can be sustainably produced from syngas and has the additional benefit of reducing greenhouse gas emissions. Eubacterium limosum is one of the few acetogens that can utilize methanol, is genetically accessible and, therefore, a promising candidate for the recombinant production of bi ...
DOI:
10.1186/s13068-021-01966-2

48. Qualitative and quantitative determination of trace aldehydes and ketones in food preservative propionic acid for quality improvement

Author:
Yiwen Cao; Shenjie Zhu; Lin Zhang; Qun Cui; Haiyan Wang
Source:
Analytical methods 2021 v.13 no.26 pp. 2989-2996
ISSN:
1759-9679
Subject:
acetaldehyde; acetone; detection limit; food preservatives; formaldehyde; gas chromatography-mass spectrometry; high performance liquid chromatography; oxygen; pH; propionic acid; quantitative analysis; titration
Abstract:
... Aiming at the difficulty in qualitative and quantitative analysis of trace compositions in food preservative propionic acid, the trace compositions and the key components influencing the total aldehyde content in propionic acid were analyzed by gas chromatography-mass spectrometry (GC-MS), high performance liquid chromatography (HPLC) and gas chromatography (GC) in this paper. The results show tha ...
DOI:
10.1039/d1ay00742d

49. A Rapid and Sensitive Chemical Screening Method for E-Cigarette Aerosols Based on Runtime Cavity Ringdown Spectroscopy

Author:
Ruwini D Rajapaksha; Mina W. Tehrani; Ana M. Rule; Charles C. Harb
Source:
Environmental science & technology 2021 v.55 no.12 pp. 8090-8096
ISSN:
1520-5851
Subject:
acetaldehyde; acetone; aerosols; benzoic acid; electronic equipment; environmental science; ethanol; formaldehyde; glycerol; maltol; mangoes; menthol; nicotine; propylene glycol; rapid methods; spectroscopy; technology; tobacco; vegetables; Virginia
Abstract:
... Growing demand of Juul and other electronic cigarettes, despite critical knowledge gaps about their chemical composition, has led to concerns regarding their potential health effects. We introduce a novel analytical approach, runtime cavity ringdown spectroscopy (rtCRDS) for rapid detection of oxidative products in e-cigarette aerosols, to facilitate the study of aerosol from a single puff of e-li ...
DOI:
10.1021/acs.est.0c07325

50. Reduced solvent and reagent amounts: effect on carbonyl dinitrophenylhydrazone measurements at low concentrations

Author:
Susana García-Alonso; Ana María Bernal-Páez; Rosa María Pérez-Pastor
Source:
Analytical methods 2021 v.13 no.16 pp. 1976-1985
ISSN:
1759-9679
Subject:
acetaldehyde; acetone; ambient temperature; cost effectiveness; crystallization; derivatization; formaldehyde; gasification; hydrazones; isopropyl alcohol; particulates; solvents
Abstract:
... This work aims to advance towards a more affordable laboratory procedure for sample treatment to determine carbonyl compounds by derivatization with 2,4-dinitrophenylhydrazine (DNPH). The proposal is based on reducing the amount of DNPH and solvents. A simple addition of standard carbonyls in a solution containing DNPH to prepare hydrazone standards is described and evaluated. Tedious recrystalliz ...
DOI:
10.1039/d0ay02288h