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1. Baseline levels and characterization of hydrocarbons in surface marine sediments along the transportation corridor in Hudson Bay: A multivariate analysis of n-alkanes, PAHs and biomarkers

Author:
Gary A. Stern; Colin R. Macdonald; Paloma Calabria Carvalho; Teresinha Wolfe; Fernanda Ferraz
Source:
Science of the total environment 2023 v.855 pp. 158718
ISSN:
0048-9697
Subject:
alkanes; biomarkers; climate; environment; freshwater; fuel oils; lotic systems; molecular weight; multivariate analysis; organic carbon; particulate organic matter; peat; petroleum; primary productivity; riparian areas; risk; sediments; transportation; Arctic region; Hudson Bay
Abstract:
... Hudson Bay is a small arctic inland shelf sea which receives large amounts of freshwater from riverine discharges, with marine flow from the north and the Atlantic. A warming climate has resulted in an expanded open water season which will result in an increase in shipping of fuel oil and petroleum to communities and mines on the western shore, increasing the risk of hydrocarbon releases. To evalu ...
DOI:
10.1016/j.scitotenv.2022.158718

2. Real-world characterization of carbonaceous substances from industrial stationary and process source emissions

Author:
Min Cui; Yuanyuan Xu; Fan Zhang; Caiqing Yan; Jun Li; Mei Zheng; Yingjun Chen
Source:
Science of the total environment 2023 v.854 pp. 158505
ISSN:
0048-9697
Subject:
air quality; alkanes; climate change; coal; combustion; dust; environment; human health; organic carbon; particulates; uncertainty
Abstract:
... Carbonaceous substances in industrial emissions are harmful to human health, air quality, and climate change. Owing to the existence of various fuel types and different technological processes, the characterization of carbonaceous substances from industrial emissions varies significantly, which causes a large uncertainty in source apportionment. Therefore, nine typical industrial sources were sele ...
DOI:
10.1016/j.scitotenv.2022.158505

3. Toxicological effects of fresh and aged gasoline exhaust particles in Hong Kong

Author:
Yik-Sze Lau; Hon-Yin Poon; Bruce Organ; Hsiao-Chi Chuang; Man-Nin Chan; Hai Guo; Steven Sai Hang Ho; Kin-Fai Ho
Source:
Journal of hazardous materials 2023 v.441 pp. 129846
ISSN:
0304-3894
Subject:
aerosols; air pollution; alkanes; biomarkers; chemical species; climate; gasoline; lactate dehydrogenase; organic carbon; particulates; regression analysis; toxicity; toxicology; China
Abstract:
... Exhaust emissions from gasoline vehicles are one of the major contributors to aerosol particles observed in urban areas. It is well-known that these tiny particles are associated with air pollution, climate forcing, and adverse health effects. However, their toxicity and bioreactivity after atmospheric ageing are less constrained. The aim of the present study was to investigate the chemical and to ...
DOI:
10.1016/j.jhazmat.2022.129846

4. 2-O-Methylated β-Cyclodextrin as an Effective Building Block to Construct Supramolecular Assemblies with Various Morphologies and Molecular Arrangements

Author:
Justine M. Kalaw; Hajime Shigemitsu; Toshiyuki Kida
Source:
Langmuir 2022 v.38 no.27 pp. 8407-8415
ISSN:
1520-5827
Subject:
alkanes; carbonates; evaporation; graphene; methanol; organogels; polyethylene terephthalates; solvents
Abstract:
... The preparation of supramolecular cyclodextrin (CD) assemblies and control of their assembly mode through guest inclusion in CD cavities have been actively studied. Contrarily, there are limited reports on the control of the assembly mode of guest-free CD molecules by external stimuli. Herein, we report the use of 2-O-methylated β-cyclodextrin (2-Me-β-CD) as an effective building block in fabricat ...
DOI:
10.1021/acs.langmuir.2c00980

5. ALGLIQOL: A two stage integrated process towards synthesis of renewable transportation fuel via catalytic hydrothermal liquefaction of lipid enriched microalgae biomass and distillation

Author:
Gargi Goswami; Ratan Kumar; Ankan Sinha; Boudhnath Birazee; Babul Chandra Dutta; Sanjay Bhutani; Debasish Das
Source:
Energy conversion and management 2022 v.263 pp. 115696
ISSN:
0196-8904
Subject:
administrative management; alkanes; aromatic compounds; biodiesel; biomass; catalysts; diesel fuel; distillation; energy conversion; feedstocks; formic acid; gasoline; hydrothermal liquefaction; lipids; liquids; microalgae; oils; temperature; viscosity
Abstract:
... Present study demonstrates a two-stage integrated process for production of hydrocarbon oil designated as ALGLIQOL, with potential to be utilized as liquid transportation fuel. Stage-I involves in-situ catalytic hydrothermal liquefaction (HTL) of microalgae biomass to produce biocrude oil and stage-II involves distillation of biocrude to hydrocarbon oil. A strategic attempt has been implemented to ...
DOI:
10.1016/j.enconman.2022.115696

6. Abundance and diversity of n-alkane and PAH-degrading bacteria and their functional genes – Potential for use in detection of marine oil pollution

Author:
Andrea Bagi; Kamila Knapik; Thierry Baussant
Source:
Science of the total environment 2022 v.810 pp. 152238
ISSN:
0048-9697
Subject:
Cycloclasticus; alkanes; automation; environmental monitoring; marine environment; metagenomics; microbial communities; oils; oxygenases; pollution; seawater; species diversity
Abstract:
... Monitoring environmental status through molecular investigation of microorganisms in the marine environment is suggested as a potentially very effective method for biomonitoring, with great potential for automation. There are several hurdles to that approach with regards to primer design, variability across geographical locations, seasons, and type of environmental pollution. Here, qPCR analysis o ...
DOI:
10.1016/j.scitotenv.2021.152238

7. Alkane variation in peat reveals palaeohydrological changes since the Little Ice Age in eastern China

Author:
Yang Pang; Bin Zhou; ChunMei Ma; JiaWei Jiang; David Taylor; YueHan Lu
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2022 v.585 pp. 110727
ISSN:
0031-0182
Subject:
alkanes; humidity; hydrology; monsoon season; organic matter; palaeogeography; paleoclimatology; paleoecology; peat; spatial variation; summer; China
Abstract:
... The East Asian summer monsoon (EASM) system plays a crucial role in regulating climatic and hydrological variability in East Asia. The hydrological effects of the EASM in eastern China during the Little Ice Age (LIA) remains controversial, however. Here, we established a relatively high-resolution palaeohydrological record over the last 700 years in East China via analyzing n-alkanes from a peat c ...
DOI:
10.1016/j.palaeo.2021.110727

8. Alkane-tolerant worm-like micelles based on assembled surfactants

Author:
Dongfang Liu; Guiwen Deng; Yaxin Zhao; Yuanyuan Zhang; Zhouyu Wang; Zhiyu Huang; Li Wang
Source:
Colloids and surfaces 2022 v.651 pp. 129608
ISSN:
0927-7757
Subject:
alkanes; aqueous solutions; hydrophobicity; micelles; microstructure; oils; sodium; solubility; viscoelasticity; viscosity
Abstract:
... Self-assembly of surfactants in aqueous solution can form a variety of aggregate structures, among which worm-like micelles (WLMs) have attracted much attention due to their excellent viscoelasticity. The addition of oil often leads to a decrease in the viscosity of WLMs, which is closely related to the location of oil dissolution within the WLMs. Whether oil could induce a viscosity increase in W ...
DOI:
10.1016/j.colsurfa.2022.129608

9. Alkyl thiol grafted silver nanoparticle–decorated cellulose nanocrystals on poly(lactic acid) composites for enhanced antibacterial activity and toughening effects

Author:
Lili Song; Yunfeng Guo; Jing Fan; Xinyan Fan; Yanjun Xie; Zefang Xiao; Haigang Wang; Daxin Liang; Yonggui Wang
Source:
Composites 2022 pp. 107231
ISSN:
1359-835X
Subject:
alkanes; antibacterial properties; brittleness; cellulose; composite films; hydrophobicity; nanocrystals; nanosilver; polymers; silver; thiols
Abstract:
... Poly(lactic acid) (PLA), a well-known environmentally friendly polymer, however, due to its brittleness and poor antibacterial properties, it is restricted in several aspects. In this study, alkyl thiol-grafted Ag nanoparticle (NP)-decorated cellulose nanocrystals (ATₓ-Ag-CNCs) were obtained by modifying Ag NP-decorated CNCs (Ag-CNCs) with 1-decanethiol, 1-tetradecanethiol and 1-octadecanethiol, a ...
DOI:
10.1016/j.compositesa.2022.107231

10. Allelopathic potential of the extracts of non-galled stems and globoid stem galls of Eremanthus erythropappus (DC) McLeish (Asteraceae)

Author:
Nina de Castro Jorge; Lubia M. Guedes; Narciso Aguilera; José Becerra; Rosy Mary dos Santos Isaias
Source:
Biochemical systematics and ecology 2022 v.100 no. pp. 104379
ISSN:
0305-1978
Subject:
Eremanthus; Lactuca sativa; Neolasioptera; alkanes; allelopathy; anti-infective agents; chemical composition; chemotaxonomy; germination; host plants; indigenous species; leaves; lettuce; medicine; methanol; morphs; plantlets; secondary metabolites; sesquiterpenoids; triterpenoids; Brazil
Abstract:
... Eremanthus erythropappus (DC) McLeisch (Asteraceae), commonly known as “candeia”, is a native species of Minas Gerais state, Brazil, frequently used in medicine as an anti-inflammatory and antimicrobial agent. Eremanthus erythropappus hosts six different gall morphotypes, whose associated inducers manipulate plant cells and tissues and stimulate the neo-synthesis, maintenance, or inhibition of bot ...
DOI:
10.1016/j.bse.2021.104379

11. Anaerobic oxidation of petroleum hydrocarbons in enrichment cultures from sediments of the Gorevoy Utes natural oil seep under methanogenic and sulfate-reducing conditions

Author:
O. N. Pavlova; O. N. Izosimova; S. M. Chernitsyna; V. G. Ivanov; T. V. Pogodaeva; A. V. Khabuev; A. G. Gorshkov; T. I. Zemskaya
Source:
Microbial ecology 2022 v.83 no.4 pp. 899-915
ISSN:
0095-3628
Subject:
Armatimonadetes; Caldiserica; Chloroflexi; Firmicutes; Methanomicrobia; Planctomycetes; alkanes; bacterial communities; delta-Proteobacteria; genes; methanogens; oils; oxidation; petroleum; sulfates
Abstract:
... This article presents the first experimental data on the ability of microbial communities from sediments of the Gorevoy Utes natural oil seep to degrade petroleum hydrocarbons under anaerobic conditions. Like in marine ecosystems associated with oil discharge, available electron acceptors, in particular sulfate ions, affect the composition of the microbial community and the degree of hydrocarbon c ...
DOI:
10.1007/s00248-021-01802-y

12. Analysis of aroma-active compounds in four Chinese dry-cured hams based on GC-O combined with AEDA and frequency detection methods

Author:
Shui Jiang; Dong Xia; Xiaoming Wang; Yaozhou Zhu; Gaole Chen; Yuan Liu
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.153 pp. 112497
ISSN:
0023-6438
Subject:
aldehydes; alkanes; cured meats; food analysis; gas chromatography-mass spectrometry; ham; meat quality; octenol; odor compounds; olfactometry; pyrazines; sulfides; China
Abstract:
... Chinese dry-cured hams have become increasingly appreciated by consumers because of their unique flavor characteristics. In this study, the volatile compounds of four Yunnan dry-cured hams (Xuanwei, Nuodeng, Sanchuan, and Saba) were characterized by monolithic material sorptive extraction (MMSE) and GC-MS. A total of 66 volatile compounds were identified, of which aldehydes and alkanes were the mo ...
DOI:
10.1016/j.lwt.2021.112497

13. Application of Renormalization Corrections to SAFT-VR Mie

Author:
Sonja A. M. Smith; Jamie T. Cripwell; Cara E. Schwarz
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.34 pp. 12797-12812
ISSN:
1520-5045
Subject:
alkanes; chemistry; equations; models; process design
Abstract:
... SAFT-VR Mie is an established equation of state that offers excellent holistic descriptions of fluid behavior. However, the model does not account for the long-wavelength density fluctuations encountered in the critical region and can therefore not describe this region accurately. To this end, SAFT-VR Mie is treated with renormalization corrections, yielding SAFT-VR Mie + RG. This procedure is bas ...
DOI:
10.1021/acs.iecr.2c02004

14. Assessing spatiotemporal sources of biogenic and anthropogenic sedimentary organic matter from the mainstream Haihe River, China: Using n-alkanes as indicators

Author:
Yang Liu; Yong He; Yu Liu; Shu Tao; WenXin Liu
Source:
Science of the total environment 2022 v.834 pp. 155382
ISSN:
0048-9697
Subject:
alkanes; carbon cycle; environment; fossil fuels; hybrids; industrialization; oils; rivers; sediments; total organic carbon; transportation; urbanization; China
Abstract:
... Sedimentary organic matter (SOM) plays an important role in the transportation and transformation of various pollutants and the carbon cycle in aquatic and terrestrial ecosystems, especially for seagoing rivers. However, few studies have focused on the sources and factors of SOM in rivers under the significant pressure of high urbanization and industrialization. In this study, we adopted the molec ...
DOI:
10.1016/j.scitotenv.2022.155382

15. Assessing the source and delivery processes of organic carbon within a mixed land use catchment using a combined n-alkane and carbon loss modelling approach

Author:
C. Wiltshire; M. Glendell; T. W. Waine; R. C. Grabowski; J. Meersmans
Source:
Journal of soils and sediments 2022 v.22 no.5 pp. 1629-1642
ISSN:
1439-0108
Subject:
alkanes; arable soils; biomarkers; eroded soils; freshwater; global carbon budget; land use; landscapes; leaves; riparian buffers; rivers; sediments; soil erosion; soil organic carbon; spatial data; spatial variation; stream channels; watersheds; woodland soils; woodlands
Abstract:
... PURPOSE: Understanding fluxes of soil organic carbon (OC) from the terrestrial to aquatic environments is crucial to evaluate their importance within the global carbon cycle. Sediment fingerprinting (SF) is increasingly used to identify land use-specific sources of OC, and, while this approach estimates the relative contribution of different sources to OC load in waterways, the high degree of spat ...
DOI:
10.1007/s11368-022-03197-w

16. Assessment of Hydrocarbon Degradation Potential in Microbial Communities in Arctic Sea Ice

Author:
Angela Peeb; Nga Phuong Dang; Marika Truu; Hiie Nõlvak; Chris Petrich; Jaak Truu
Source:
Microorganisms 2022 v.10 no.2 pp. -
ISSN:
2076-2607
Subject:
Colwellia; Glaciecola; alkanes; cold; databases; genes; genetic traits; marine environment; metabolism; metagenomics; oils; petroleum; sea ice; seawater; taxonomy; Arctic Ocean; Arctic region
Abstract:
... The anthropogenic release of oil hydrocarbons into the cold marine environment is an increasing concern due to the elevated usage of sea routes and the exploration of new oil drilling sites in Arctic areas. The aim of this study was to evaluate prokaryotic community structures and the genetic potential of hydrocarbon degradation in the metagenomes of seawater, sea ice, and crude oil encapsulating ...
DOI:
10.3390/microorganisms10020328

17. Assessment of bioremediation potential of petroleum-contaminated soils from the shanbei oilfield of China revealed by qPCR and high throughput sequencing

Author:
Manli Wu; Zeliang Liu; Huan Gao; Jinghua Gao; Yinrui Xu; Yawen Ou
Source:
Chemosphere 2022 v.308 pp. 136446
ISSN:
0045-6535
Subject:
Acinetobacter; Pseudomonas; Stenotrophomonas; alkanes; biodegradation; bioremediation; keystone species; microbiome; oil fields; oils; petroleum; quantitative polymerase chain reaction; risk; soil; soil pollution; China
Abstract:
... With the crude oil exploration activities in the Shanbei oilfield of China, the risk of soil contamination with crude oil spills has become a major concern. This study aimed at assessing the bioremediation potential of the petroleum polluted soils by investigating the expression of key functional genes decoding alkane and aromatic component degradation using an array of primers and real-time quant ...
DOI:
10.1016/j.chemosphere.2022.136446

18. Asymmetric Effect on the Length Dependence of Oligo(Phenylene ethynylene)-Based Molecular Junctions

Author:
Yinqi Fan; Sylvain Pitie; Chenguang Liu; Cezhou Zhao; Chun Zhao; Mahamadou Seydou; Yannick J. Dappe; Richard J. Nichols; Li Yang
Source:
Journal of physical chemistry 2022 v.126 no.7 pp. 3635-3645
ISSN:
1932-7455
Subject:
acetylene; alkanes; asymmetry; electrical conductivity; electrodes; graphene
Abstract:
... It is well known that the electrical conductance of molecular junctions in the tunneling regime varies exponentially with the length of the molecular backbone. This behavior is strongly influenced by anchoring groups, which connect the molecular backbone to the electrodes and locate the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) resonances with respect ...
DOI:
10.1021/acs.jpcc.1c07654

19. Atomic Edge-Guided Polyethylene Crystallization on Monolayer Two-Dimensional Materials

Author:
Dong Zhou; Miguel Fuentes-Cabrera; Akash Singh; Raymond R. Unocic; Jan Michael Y. Carrillo; Kai Xiao; Yumeng Li; Bo Li
Source:
Macromolecules 2022 v.55 no.2 pp. 559-567
ISSN:
1520-5835
Subject:
alkanes; crystallization; molecular dynamics; polyethylene
Abstract:
... Here, we combine an advanced synthesis of two-dimensional (2D) materials (MoSe₂) having well-defined atomic edge configurations with ab initio and atomistic molecular dynamics (MD) simulations to study how atomic edges interact with polyethylene (HDPE) chains in a dilute solution assembly process. Our results reveal that Mo-terminated zigzag (Mo-ZZ) edges act as preferred nucleation sites and stro ...
DOI:
10.1021/acs.macromol.1c01978

20. Behavior of Long-Chain Hydrocarbons at High Pressures and Temperatures

Author:
Abhisek Basu; Mainak Mookherjee; Ericka McMahan; Bianca Haberl; Reinhard Boehler
Source:
Journal of physical chemistry 2022 v.126 no.13 pp. 2530-2537
ISSN:
1520-5207
Subject:
alkanes; byproducts; physical chemistry; spectroscopy; temperature
Abstract:
... Although long-chain aliphatic hydrocarbons are documented in meteorites, their origin is poorly understood. A key question is whether they are pristine or a byproduct of terrestrial alteration? To understand if these long-chain hydrocarbons are indigenous, it will be important to explore their thermodynamic and mechanical stability at conditions experienced by extraterrestrial objects during atmos ...
DOI:
10.1021/acs.jpcb.1c10786

21. Behavioral pattern of generalist and specialist insect pests to brassicaceous leaf cuticular n-alkanes and free fatty acids

Author:
Nayan Roy
Source:
Arthropod-plant interactions 2022 v.16 no.5 pp. 537-551
ISSN:
1872-8855
Subject:
Brassica juncea; Brassica oleracea; Pieris brassicae; Plutella xylostella; Spilarctia obliqua; alkanes; bait traps; cabbage; cultivars; epicuticular wax; host preferences; insects; leaves; oviposition; oviposition preference; rapeseed; smell; trap crops
Abstract:
... The role of leaf cuticular wax of cabbage, Brassica oleracea L., rapeseed, B. campestris L., and Indian mustard, B. juncea L. in host preference by two generalists, Spilarctia obliqua Walker and Pieris brassicae L., and a specialist, Plutella xylostella L. was investigated under laboratory conditions. A total of 25 n-alkanes from n-C₁₄ to n-C₃₆ and 15 free fatty acids (FFAs) from C₁₂:₀ to C₂₂:₀ we ...
DOI:
10.1007/s11829-022-09917-w

22. Biodegradation Potential of Oil-degrading Bacteria Related to the Genus Thalassospira Isolated from Polluted Coastal Area in Mediterranean Sea

Author:
Santina Santisi; Mariosimone Zoccali; Valentina Catania; Paola Quatrini; Luigi Mondello; Maria Genovese; Simone Cappello
Source:
Soil & sediment contamination 2022 v.31 no.3 pp. 316-332
ISSN:
1549-7887
Subject:
Thalassospira; alkanes; biodegradation; biosurfactants; coasts; comprehensive two-dimensional gas chromatography; emulsifying; genes; metabolism; oils; seawater; sediment contamination; sediments; soil; Mediterranean Sea; Sicily
Abstract:
... Three bacterial species related to the genus Thalassospira (T. lucentensis, T. xianhensis and T. profundimaris), isolated from polluted sediment and seawater samples collected from Priolo Bay (eastern coast of Sicily, Ionian Sea), were analyzed for their biotechnological potential. For this purpose, the presence of specific catabolic genes associated to aliphatic and aromatic hydrocarbon metabolis ...
DOI:
10.1080/15320383.2021.1937935

23. Biodegradation of diisopropyl ether, ethyl tert-butyl ether, and other fuel oxygenates by Mycolicibacterium sp. strain CH28

Author:
Ingrid Zsilinszky; Balázs Fehér; István Kiss; Attila Komóczi; Péter Gyula; Zsolt Szabó
Source:
Bioremediation journal 2022 v.26 no.2 pp. 138-149
ISSN:
1547-6529
Subject:
Hydrogenophaga; acetates; acetone; alkanes; biodegradation; bioremediation; gasoline; groundwater; isopropyl alcohol; methyl ethers; mineralization; pH
Abstract:
... Growing use of recalcitrant fuel oxygenates like methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), and diisopropyl ether (DIPE) poses serious threat to aquatic environments and drinking water sources. Mycolicibacterium sp. strain CH28 was isolated earlier as a potential degrader of DIPE. Optimal culture conditions for strain CH28 were determined to be 32 ...
DOI:
10.1080/10889868.2021.1911924

24. Biological relevance of VOCs emanating from red onions infected with Erwinia (Pectobacterium) carotovora under different storage conditions

Author:
Shikha Tiwari; Umang Goswami; Adinath Kate; Bharat Modhera; Manoj Kumar Tripathi; Debabandya Mohapatra
Source:
Postharvest biology and technology 2022 v.184 pp. 111761
ISSN:
0925-5214
Subject:
Erwinia; Pectobacterium carotovorum; alcohols; aldehydes; alkanes; biomarkers; biosensors; biosynthesis; discriminant analysis; heat; horticulture; least squares; microbial activity; principal component analysis; spoilage; storage temperature; storage time; sulfur; volatile organic compounds
Abstract:
... Volatile organic compounds (VOCs) are generated in different commodities through various biosynthetic pathways. They act as biomarkers for different infections and metabolisms and can be instrumental in the development of biosensors for monitoring the health of stored horticultural commodities. Healthy onions and samples infected with Pectobacter Erwinia carotovora were stored at different conditi ...
DOI:
10.1016/j.postharvbio.2021.111761

25. Biomarker evidence for deforestation across the Triassic-Jurassic boundary in the high palaeolatitude Junggar Basin, northwest China

Author:
Xiaoyu Zhang; Peizong Lv; Linhao Fang; Guangli Wang; Yuanzheng Lu; Shenghui Deng; Han Yang; Yanan Fang; Hongjia Li; Xinzhi Zhang; Yue Sun; Yuxuan Chen; Shengbao Shi
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2022 v.600 pp. 111074
ISSN:
0031-0182
Subject:
acid rain; alkanes; biodiversity; biomarkers; deforestation; extinction; furans; palaeogeography; paleoclimatology; paleoecology; palynology; vegetation; volcanic activity; China
Abstract:
... The end-Triassic mass extinction (ETE), one of the five largest mass extinctions, occurred at 201.6 Ma. It was characterized by dramatic declines in marine and terrestrial ecosystems and was approximately synchronous with the eruption of the Central Atlantic Magmatic Province (CAMP). Loss of marine biodiversity is linked to extreme global warming while the cause of floral destruction in terrestria ...
DOI:
10.1016/j.palaeo.2022.111074

26. Biomarkers reveal two paramount Pliocene-Pleistocene connectivity events in the Caspian Sea Basin

Author:
Iuliana Vasiliev; Marcel T.J. van der Meer; Marius Stoica; Wout Krijgsman; Gert-Jan Reichart; Sergei Lazarev; Geanina A. Butiseacă; Eva M. Niedermeyer; Elmira Aliyeva; Christian G.C. van Baak; Andreas Mulch
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2022 v.587 pp. 110802
ISSN:
0031-0182
Subject:
Pleistocene epoch; Pliocene epoch; air temperature; alkanes; basins; biomarkers; cold; glycerol; hydrology; isoprenoids; oceans; organic matter; palaeogeography; paleoclimatology; paleoecology; plants (botany); Arctic region; Black Sea; Caspian Sea
Abstract:
... Landlocked basins like the Caspian Sea are highly sensitive to changes in their hydrological budget, especially at times of disconnection from the global ocean. Here, we reconstruct the Pliocene to Pleistocene palaeohydrological and palaeoenvironmental changes occurring in the South Caspian Basin between ~3.6 and ~ 1.9 Ma, using compound-specific hydrogen isotope (δ²H) data on long chain n-alkanes ...
DOI:
10.1016/j.palaeo.2021.110802

27. Biomass-coal reburning: Competitive mechanism of gas-solid product activation coal char

Author:
Yukai Li; Dongdong Feng; Shaozeng Sun; Yijun Zhao; Qi Shang; Kun Chen; Bowen Li; Jiangquan Wu
Source:
Energy 2022 v.261 pp. 125225
ISSN:
0360-5442
Subject:
alkanes; aromatic compounds; biochar; biomass; carbon; combustion; energy; fluidized beds; oxygen; pulverized coal; synthesis gas
Abstract:
... Reburning technology combining coal and biomass can effectively reduce NOx emissions and promote carbon neutrality in coal-fired systems. This work is based on the flat-flame burner test bench that decoupled the process of biomass-coal reburning effect on coal in the initial stage. The changes in surface functional groups and carbon skeleton structure of coal char were analyzed using FTIR, XPS, an ...
DOI:
10.1016/j.energy.2022.125225

28. Biosurfactants produced by novel facultative-halophilic Bacillus sp. XT-2 with biodegradation of long chain n-alkane and the application for enhancing waxy oil recovery

Author:
Xiao-Tong Wang; Bin Liu; Xi-Zhe Li; Wei Lin; Dong-An Li; Hao Dong; Lei Wang
Source:
Energy 2022 v.240 pp. 122802
ISSN:
0360-5442
Subject:
Bacillus (bacteria); alkanes; biodegradation; bioremediation; biosurfactants; emulsifying; energy; mass spectrometry; oils; petroleum; surfactin; synthetic genes
Abstract:
... Efficient biosurfactant producers with hydrocarbon degradation capability and harsh environment adaptability are precious bioresources for microbial enhanced oil recovery and petroleum-related bioremediation. In this study, a novel facultative-halophilic strain Bacillus sp. XT-2 was isolated and shown to degrade long-chain hydrocarbons along with lipopeptide biosurfactants production. The biosurfa ...
DOI:
10.1016/j.energy.2021.122802

29. Catalytic hydrogenolysis of plastic to liquid hydrocarbons over a nickel-based catalyst

Author:
Zhigang Zhao; Zheng Li; Xiangkun Zhang; Tan Li; Yuqing Li; Xingkun Chen; Kaige Wang
Source:
Environmental pollution 2022 v.313 pp. 120154
ISSN:
0269-7491
Subject:
alkanes; catalysts; cold; gasoline; hydrogen; liquids; nickel; pollution; polyethylene; silica; wastes
Abstract:
... The catalytic hydrogenolysis of a typical model compound of mulching film waste, polyethylene, was investigated as a potential way to improve economic efficiency of mulching film recycling. Nickel-based heterogeneous catalysts are proposed for polyethylene hydrogenolysis to produce liquid hydrocarbons. Among catalysts supported on various carriers, Ni/SiO₂ catalyst shows the highest activity which ...
DOI:
10.1016/j.envpol.2022.120154

30. Changes in Chemical Composition and Copepod Toxicity during Petroleum Photo-oxidation

Author:
Samuel D. Katz; Haining Chen; David M. Fields; Erin C. Beirne; Phoebe Keyes; Greg T. Drozd; Christoph Aeppli
Source:
Environmental science & technology 2022 v.56 no.9 pp. 5552-5562
ISSN:
1520-5851
Subject:
Acartia tonsa; Calanus finmarchicus; alkanes; bioaccumulation; biomimetics; chemical composition; irradiation; lipids; mortality; oil spills; oils; petroleum; photooxidation; solubility; toxicity
Abstract:
... Photoproducts can be formed rapidly in the initial phase of a marine oil spill. However, their toxicity is not well understood. In this study, oil was irradiated, chemically characterized, and tested for toxicity in three copepod species (Acartia tonsa, Temora longicornis, and Calanus finmarchicus). Irradiation led to a depletion of polycyclic aromatic hydrocarbons (PAHs) and n-alkanes in oil resi ...
DOI:
10.1021/acs.est.2c00251

31. Characterisation of radiogenic monoalkenes in Australian oils and condensate

Author:
Christopher J. Boreham; Neel Jinadasa; Jacob Sohn; Ziqing Hong; Christopher Blake
Source:
Organic geochemistry 2022 v.163 pp. 104332
ISSN:
0146-6380
Subject:
Early Cretaceous epoch; Mesoproterozoic era; alkanes; alkenes; carbon; cis-trans isomers; cleavage (chemistry); condensates; crosslinking; geochemistry; hydrogen; liquids; oil fields; oils; probability; radiolysis; thermodynamics
Abstract:
... Thirteen Australian oils and one condensate, covering oil reservoir ages from Mesoproterozoic to Early Cretaceous, show monoalkene contents varying from 0.01 to 22.3 wt% of the whole liquid. Radiolysis of saturated hydrocarbons is the most likely process leading to oils with high alkene contents. The major radiolytic component is an unresolved complex mixture (UCM). The bulk of the resolved alkene ...
DOI:
10.1016/j.orggeochem.2021.104332

32. Characterization and biodegradability assessment of water-soluble fraction of oily sludge using stir bar sorptive extraction and GCxGC-TOF MS

Author:
Priyankar Chand; Suryendu Dutta; Suparna Mukherji
Source:
Environmental pollution 2022 v.304 pp. 119177
ISSN:
0269-7491
Subject:
Bacillus cereus; Rhodococcus ruber; alkanes; biodegradation; biphenyl; groundwater contamination; humans; naphthalene; phenol; pyridines; quinoline; sludge; soil; toxicity; water solubility
Abstract:
... Percolation of water through oily sludge during storage and handling of the sludge can cause soil and groundwater contamination. In this study, oily sludge from a refinery was equilibrated with water to obtain the water-soluble fraction (WSF) of oily sludge. The WSF had dissolved organic carbon (DOC) of 166 mg/L. Human cell line-based toxicity assay revealed IC₅₀ of 41 mg/L indicating its toxic na ...
DOI:
10.1016/j.envpol.2022.119177

33. Characterization and chemo-taxonomic evaluation of plant leaf waxes (long chain n-alkanoic acids, n-alkanes and n-alkanols) as a vegetation biomarker from species of the South American temperate forest (STF)

Author:
Carol Cerda-Peña; Sergio Contreras
Source:
Ecological indicators 2022 v.136 pp. 108675
ISSN:
1470-160X
Subject:
alkanes; biomarkers; chemotaxonomy; environmental factors; lakes; leaves; temperate forests
Abstract:
... Plant leaf waxes are used as vegetation biomarkers in several archives (i.e. soils, lake and marine sediments), study of these compounds in modern plants is needed to makes their application and interpretation more robust. However, in the South American Temperate Forest (STF), few species have been studied. The main goal of this research was to characterize twelve dominant modern species of the ST ...
DOI:
10.1016/j.ecolind.2022.108675

34. Characterization of aroma profiles and aroma-active compounds in high-salt and low-salt shrimp paste by molecular sensory science

Author:
Jing Yu; Kuan Lu; Jiwei Zi; Xihong Yang; Wancui Xie
Source:
Food bioscience 2022 v.45 pp. 101470
ISSN:
2212-4292
Subject:
alkanes; cheeses; electronic nose; fermentation; odors; pyrazines; sensory evaluation; shrimp; umami
Abstract:
... Flavor characteristics of raw shrimp, high-salt and low-salt shrimp paste were evaluated and compared by sensory analysis, headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) and solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS). In addition, aroma profiles and aroma-active compounds in these three samples were analyzed by solvent-assisted flavor evaporat ...
DOI:
10.1016/j.fbio.2021.101470

35. Characterization of bacterial community in oil-contaminated soil and its biodegradation efficiency of high molecular weight (>C40) hydrocarbon

Author:
Balakrishnan Muthukumar; Punniyakotti Parthipan; Mohamad S. AlSalhi; Natarajan Srinivasa Prabhu; T. Nageswara Rao; Sandhanasamy Devanesan; Murali Kannan Maruthamuthu; Aruliah Rajasekar
Source:
Chemosphere 2022 v.289 pp. 133168
ISSN:
0045-6535
Subject:
Pseudomonas aeruginosa; alkanes; anthracenes; bacterial communities; benzopyrenes; biodegradation; biosurfactants; carbon; emulsifying; gas chromatography; mass spectrometry; metagenomics; molecular weight; oils; petroleum; polluted soils; rhamnolipids
Abstract:
... In this study, two biosurfactant producing Pseudomonas aeruginosa sp. were isolated from motor oil contaminated soil for crude oil, alkane and PAH degradation studies. Metagenomics analysis identified as proteobacteria phyla was the dominant. Isolated two bacterial species were well grown in mineral salt medium with 1% of crude oil, alkanes (dotriacontane and tetratetracontane) and PAH (pyrene, be ...
DOI:
10.1016/j.chemosphere.2021.133168

36. Characterization of carbonaceous substances emitted from residential solid fuel combustion using real-world data from the Beijing-Tianjin-Hebei region

Author:
Min Cui; Yuanyuan Xu; Binbin Yu; Lin Liu; Jun Li; Yingjun Chen
Source:
Science of the total environment 2022 v.837 pp. 155529
ISSN:
0048-9697
Subject:
air quality; alkanes; climate change; coal; combustion efficiency; environment; fuel combustion; heating systems; human health; organic carbon
Abstract:
... Residential solid fuel emissions are among the most important sources of carbonaceous substances that exert harmful effects on air quality, human health and climate change. Considering the constantly updated emission reduction policies for residential solid fuel combustion in the Beijing-Tianjin-Hebei (BTH) region, the emission data for the source should updated in a timely manner. Testing was per ...
DOI:
10.1016/j.scitotenv.2022.155529

37. Characterization of the organic functional group composition and sources of summertime aerosols in an eastern city of China

Author:
Kaihui Xia; Sheng-Shi Mei; Cheng-Cheng Liu; Hao Liu; Renmin Yuan; Shang Liu
Source:
Atmospheric environment 2022 v.277 pp. 119078
ISSN:
1352-2310
Subject:
Fourier transform infrared spectroscopy; aerosols; air; alkanes; biomass; carboxylic acids; detritus; dust; environment; fossil fuels; fuel combustion; pollution; river deltas; summer; China; Yangtze River
Abstract:
... An intensive field campaign was carried out in Hefei, a city in the Yangtze River Delta in eastern China, in the summer of 2020 to examine the composition and sources of organic aerosols (OA). Time-resolved filter samples were collected and quantified to obtain the concentrations for organic functional groups (OFGs), including alkane, hydroxyl, carboxylic acid, non-acid carbonyl, amine, and aromat ...
DOI:
10.1016/j.atmosenv.2022.119078

38. Characterization of the organic matter in sediments of the Great War Island (Belgrade, Serbia)

Author:
Sanja Stojadinović; Aleksandra Šajnović; Milica Kašanin-Grubin; Gordana Gajica; Gorica Veselinović; Snežana Štrbac; Branimir Jovančićević
Source:
Journal of soils and sediments 2022 v.22 no.2 pp. 640-655
ISSN:
1439-0108
Subject:
Fraxinus; Nymphaea alba; Populus nigra; Salix alba; Salvinia natans; Taxodium distichum; air; alkanes; biomarkers; clay; coasts; combustion; conservation areas; gas chromatography-mass spectrometry; macrophytes; organic matter; petroleum; phytoplankton; rivers; runoff; sand fraction; sediments; solid phase extraction; thermodynamics; wetlands; Danube River; Serbia
Abstract:
... PURPOSE: The Great War Island (GWI) is a landform of exceptional features and a protected area located in the center of Belgrade at the Sava and Danube River’s confluence. The position of GWI causes a large number of possible hydrocarbons inputs that influence the quality of both river waters and sediments. The main objective of this research is to assess the distribution and source of hydrocarbon ...
DOI:
10.1007/s11368-021-03103-w

39. Characterization of two novel strains of Pseudomonas aeruginosa on biodegradation of crude oil and its enzyme activities

Author:
Balakrishnan Muthukumar; Mohamad S. Al Salhi; Jayaraman Narenkumar; Sandhanasamy Devanesan; Tentu Nageswara Rao; Woong Kim; Aruliah Rajasekar
Source:
Environmental pollution 2022 v.304 pp. 119223
ISSN:
0269-7491
Subject:
Pseudomonas aeruginosa; alcohol dehydrogenase; alkanes; biodegradation; biosurfactants; carbon; gas chromatography-mass spectrometry; pH; petroleum; pollution
Abstract:
... Crude oil contaminant is one of the major problem to environment and its removal process considered as most challenging tool currently across the world. In this degradation study, crude oil hydrocarbons are degraded on various pH optimization conditions (pH 2, 4,6,7,8 and 10) by using two biosurfactant producing bacterial strains Pseudomonas aeruginosa PP3 and Pseudomonas aeruginosa PP4. During cr ...
DOI:
10.1016/j.envpol.2022.119223

40. Characterizations and comparison of low sulfur fuel oils compliant with 2020 global sulfur cap regulation for international shipping

Author:
Robert K. Nelson; Alan G. Scarlett; Marthe Monique Gagnon; Alex I. Holman; Christopher M. Reddy; Paul A. Sutton; Kliti Grice
Source:
Marine pollution bulletin 2022 v.180 pp. 113791
ISSN:
0025-326X
Subject:
alkanes; biomarkers; forensic sciences; heterocyclic compounds; marine pollution; sulfur
Abstract:
... The International Marine Organization 2020 Global Sulfur Cap requires ships to burn fuels with <0.50% S and some countries require <0.10% S in certain Sulfur Emission Control Areas but little is known about these new types of fuels. Using both traditional GC–MS and more advanced chromatographic and mass spectrometry techniques, plus stable isotopic, δ¹³C and δ²H, analyses of pristane, phytane and ...
DOI:
10.1016/j.marpolbul.2022.113791

41. Chemical fingerprinting and characterization of spilled oils and burnt soot particles – A case study on the Sanchi oil tanker collision in the East China Sea

Author:
Fang Yin; Zhibo Song; Zhiwei He; Boyu Qin; Gerald F. John; Li Zhang; Penghao Su; Wenshu Zhang; Tao Yang
Source:
Science of the total environment 2022 v.824 pp. 153896
ISSN:
0048-9697
Subject:
accidents; alkanes; case studies; combustion; condensates; environment; evaporation; flammability; fuel oils; fume hoods; soot; tankers; volatilization; East China Sea
Abstract:
... The condensate spill accident from the Sanchi oil tanker collision in the East China Sea is unique in world history. To date, the spilled and burnt amounts of condensate remain unknown. The present study demonstrates the chemical fingerprints of a surrogate condensate (SC) from the same source, and of the carried heavy fuel oil (HFO) of the Sanchi accident. The evaporative features of the condensa ...
DOI:
10.1016/j.scitotenv.2022.153896

42. Chemical profiles of PM2.5 emitted from various anthropogenic sources of the Eastern Mediterranean: Cooking, wood burning, and diesel generators

Author:
Marc Fadel; Frédéric Ledoux; Marianne Seigneur; Konstantina Oikonomou; Jean Sciare; Dominique Courcot; Charbel Afif
Source:
Environmental research 2022 v.211 pp. 113032
ISSN:
0013-9351
Subject:
alkanes; beef; charcoal; chickens; furans; generators (equipment); polychlorinated biphenyls; research; water solubility; wood
Abstract:
... The chemical profiles of PM₂.₅ emitted from a non-road diesel generator, wood burning and cooking activities including chicken and beef charcoal grilling and general cooking activities were determined. The characterization included the carbonaceous fraction (OC/EC), water-soluble ions, elements, and organic species comprising n-alkanes, polycyclic aromatic hydrocarbons, carboxylic acids, levogluco ...
DOI:
10.1016/j.envres.2022.113032

43. Chemical synthesis and characterization of single-chain C18-chloroparaffin materials with defined degrees of chlorination

Author:
Marco C. Knobloch; Jannik Sprengel; Flurin Mathis; Regula Haag; Susanne Kern; Davide Bleiner; Walter Vetter; Norbert V. Heeb
Source:
Chemosphere 2022 v.291 pp. 132938
ISSN:
0045-6535
Subject:
alkanes; carbon; chlorides; chlorination; environmental fate; feedstocks; fractionation; liquid chromatography; spectral analysis; synthesis
Abstract:
... Technical chlorinated paraffins (CPs) are produced via radical chlorination of n-alkane feedstocks with different carbon chain-lengths (∼C₁₀–C₃₀). Short-chain CPs (SCCPs, C₁₀–C₁₃) are classified as persistent organic pollutants (POPs) under the Stockholm Convention. This regulation has induced a shift to use longer-chain CPs as substitutes. Consequently, medium-chain (MCCPs, C₁₄–C₁₇) and long-chai ...
DOI:
10.1016/j.chemosphere.2021.132938

44. Chemicals in European residences – Part I: A review of emissions, concentrations and health effects of volatile organic compounds (VOCs)

Author:
Christos H. Halios; Charlotte Landeg-Cox; Scott D. Lowther; Alice Middleton; Tim Marczylo; Sani Dimitroulopoulou
Source:
Science of the total environment 2022 v.839 pp. 156201
ISSN:
0048-9697
Subject:
acetone; air; air quality; alkanes; bricks; carcinogenicity; environment; formaldehyde; guidelines; heat; monitoring; terpenoids; wood
Abstract:
... One of the more important classes of potentially toxic indoor air chemicals are the Volatile Organic Compounds (VOCs). However, due to a limited understanding of the relationships between indoor concentrations of individual VOCs and health outcomes, there are currently no universal health-based guideline values for VOCs within Europe including the UK. In this study, a systematic search was conduct ...
DOI:
10.1016/j.scitotenv.2022.156201

45. Chia seed oil-candelilla wax oleogels structural features and viscoelasticity are enhanced by annealing

Author:
D. Trujillo-Ramírez; I. Reyes; C. Lobato-Calleros; E.J. Vernon-Carter; J. Alvarez-Ramirez
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.153 pp. 112433
ISSN:
0023-6438
Subject:
Salvia hispanica; X-ray diffraction; alkanes; candelilla wax; crystal structure; light microscopy; oleogels; seed oils; small-angle X-ray scattering; viscoelasticity; wide-angle X-ray scattering
Abstract:
... Chia seed oil-candelilla wax (3 g/100 g) oleogel was prepared and subjected to annealing at three different temperatures (30, 35 and 40 °C). Light microscopy images showed the presence of needle-like crystals structures dispersed in the oil phase. Annealing disrupted the crystalline structures by reducing their number. Wide-angle X-ray dispersion analysis showed that the annealed oleogels did not ...
DOI:
10.1016/j.lwt.2021.112433

46. Chiral hydrogen-bonded organic frameworks used as a chiral stationary phase for chiral separation in gas chromatography

Author:
Wei Wang; Yukui Zhang; Bo Tang; Huipeng Hou; Shanshan Tang; Aiqin Luo
Source:
Journal of chromatography 2022 v.1675 pp. 463150
ISSN:
0021-9673
Subject:
adsorption; alkanes; chemical species; density functional theory; drugs; enantiomers; fluorescence; gas chromatography; hydrogen bonding; pollutants; pollution control; standard deviation
Abstract:
... Hydrogen-bonded organic frameworks (HOFs) are two dimensional (2D) or three dimensional (3D) porous crystalline materials constructed by Hydrogen bond interaction. In recent years, a variety of functional HOF materials have been successfully synthesized and used in structural identification, environmental pollutant removal, chiral resolution, drug delivery, fluorescence sensing, etc. Here, we firs ...
DOI:
10.1016/j.chroma.2022.463150

47. Chitosan-based composites reinforced with antibacterial flexible wood membrane for rapid hemostasis

Author:
Qingwu Wang; Tianyu Luo; Xiaodong Xu; Qiaoyi Han; Xin Xu; Xingxia Zhang; Xia Liu; Qiang Shi
Source:
International journal of biological macromolecules 2022 v.215 pp. 450-464
ISSN:
0141-8130
Subject:
absorption; alkanes; antibacterial properties; chitosan; hemicellulose; hemostasis; hydrophobicity; lignin; nanosilver; polyethylene glycol; schiff bases; sodium alginate; synergism; wood
Abstract:
... Irregular hemorrhagic traumas always threaten the health of patients due to uncontrollable bleeding and wound infections. The traditional hemostatic materials show dissatisfactory hemostatic efficiency and antibacterial activity in solving these potential bleeding dangers. Herein, we proposed a kind of composites based on flexible wood membrane (FWM) loaded with chitosan/alginate derivative for ac ...
DOI:
10.1016/j.ijbiomac.2022.06.074

48. Chlorinated paraffins – A historical consideration including remarks on their complexity

Author:
Walter Vetter; Jannik Sprengel; Kerstin Krätschmer
Source:
Chemosphere 2022 v.287 pp. 132032
ISSN:
0045-6535
Subject:
alkanes; chlorination; industrial applications; niches
Abstract:
... Chlorinated paraffins (CPs) are high production volume chemicals currently produced and used in higher quantities than any other medium-size polyhalogenated compound (class). In addition, the composition of industrial CP mixtures is highly complex and poorly understood. In this article, we searched in the literature for the beginning of the chlorination of alkanes and how this substance class deve ...
DOI:
10.1016/j.chemosphere.2021.132032

49. Combining Renewable Eleostearic Acid and Eugenol to Fabricate Sustainable Plasticizer and Its Effect of Plasticizing on PVC

Author:
Yufeng Ma; Fei Song; Juan Yu; Nannan Wang; Puyou Jia; Yonghong Zhou
Source:
Journal of polymers and the environment 2022 v.30 no.5 pp. 2099-2108
ISSN:
1566-2543
Subject:
alkanes; environment; epoxides; eugenol; hydrogen; linolenic acid; plasticizers; raw materials; thermal stability
Abstract:
... The recent studies on sustainable plasticizer mainly focus on raw material source, synthesis method and plasticization, but the effect of chemical functional groups (epoxy group and ester group) of sustainable plasticizer on compatibility and thermal stability of plasticized polyvinyl chlorid (PVC) materials has been ignored. In this study, two kinds of sustainable plasticizers (eleostearic acid e ...
DOI:
10.1007/s10924-021-02341-w

50. Comparative Analysis of Epicuticular Lipids in Locusta migratoria and Calliptamus italicus: A Possible Role in Susceptibility to Entomopathogenic Fungi

Author:
Mariya D. Ganina; Maksim V. Tyurin; Ulzhalgas T. Zhumatayeva; Georgy R. Lednev; Sergey V. Morozov; Vadim Yu. Kryukov
Source:
Insects 2022 v.13 no.8 pp. -
ISSN:
2075-4450
Subject:
Beauveria bassiana; Calliptamus; Locusta migratoria; Metarhizium robertsii; alkanes; conidia; fungi; gas chromatography; germination; lipid composition; lipids; mass spectrometry; migratory behavior
Abstract:
... Cuticular lipids protect insects from desiccation and may determine resistance to fungal pathogens. Nonetheless, the trade-off between these lipid functions is still poorly understood. The migratory locust Locusta migratoria and the Italian locust Calliptamus italicus have dissimilar hygrothermal preferences: L. migratoria inhabits areas near water bodies with a reed bed, and C. italicus exploits ...
DOI:
10.3390/insects13080736