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1. Characterization of submicron aerosol particles in winter at Albany, New York

Author:
Wei, Xiuli; Gui, Huaqiao; Liu, Jianguo; Cheng, Ying
Source:
Journal of environmental sciences (China) 2022 v.111 pp. 118-129
ISSN:
1001-0742
Subject:
chemical composition,   etc   ; acidity; aerosols; climate; human health; models; nitrates; pH; pollutants; pollution; spectrometers; sulfates; temperature; winter; China; New York;     Show all 16 Subjects
Abstract:
... A thorough understanding of chemical composition, particle pH, and pollutant emissions is essential to address the climate and human health effects of atmospheric particles. In this study, we used a High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and Scanning Mobility Particle Sizer (SMPS) to characterize the composition of submicron particles. Moreover, we applied the ISORRO ...
DOI:
10.1016/j.jes.2021.03.004

2. Metal-organic framework derived hollow CoFe@C composites by the tunable chemical composition for efficient microwave absorption

Author:
Wei, Shuang; Chen, Tao; Wang, Qi; Shi, Zhicheng; Li, Wen; Chen, Shougang
Source:
Journal of colloid and interface science 2021 v.593 pp. 370-379
ISSN:
0021-9797
Subject:
chemical composition,   etc   ; absorption; coordination polymers; magnetism; microstructure;     Show all 5 Subjects
Abstract:
... Controlling the composition and microstructure of nanomaterials is still a significant challenge in developing high-performance microwave absorption (MA) materials. Herein, metal–organic framework (MOF)-derived hollow CoFe@C nanoboxes are designed and prepared through the facile regulating the mass ratios of ZIF-67/PFC and a thermal annealing treatment. The CoFe@C composite can achieve an excellen ...
DOI:
10.1016/j.jcis.2021.02.120

3. Surface-enhanced Raman scattering for mixing state characterization of individual fine particles during a haze episode in Beijing, China

Author:
Chen, Hui; Duan, Fengkui; Du, Jingjing; Yin, Ranhao; Zhu, Lidan; Dong, Jinlu; He, Kebin; Sun, Zhenli; Wang, Suhua
Source:
Journal of environmental sciences (China) 2021 v.104 pp. 216-224
ISSN:
1001-0742
Subject:
chemical composition,   etc   ; pollution; soot; spectral analysis; China;     Show all 5 Subjects
Abstract:
... The nondestructive characterization of the mixing state of individual fine particles using the traditional single particle analysis technique remains a challenge. In this study, fine particles were collected during haze events under different pollution levels from September 5 to 11 2017 in Beijing, China. A nondestructive surface-enhanced Raman scattering (SERS) technique was employed to investiga ...
DOI:
10.1016/j.jes.2020.12.008

4. Achievement of narrow-band blue-emitting phosphors KScSr₁₋yCaySi₂O₇:Bi³⁺ by the migration of luminescence centers

Author:
Yao, Yao; Wang, Zhijun; Cao, Lingwei; Zheng, Mingjie; Wang, Xuejiao; Zhang, Mengya; Cui, Jia; Yang, Zhibin; Ding, Wenge; Li, Panlai
Source:
RSC advances 2021 v.11 no.21 pp. 12568-12577
ISSN:
2046-2069
Subject:
chemical composition,   etc   ; calcium; color; crystal structure; luminescence;     Show all 5 Subjects
Abstract:
... In recent years, efforts have been made to develop narrow-band emission phosphors with excellent performance. Herein, a series of KScSr₁₋yCaySi₂O₇:0.07Bi³⁺ narrow-band phosphors were synthesized by a co-substitution method, and the crystal structure, the occupancy of activated ions and luminescence properties were studied in detail. The substitution of Ca²⁺ for Sr²⁺ ions resulted in the migration ...
DOI:
10.1039/d1ra01375k

5. Incorporation of Basic α-Hydroxy Acid Residues into Primitive Polyester Microdroplets for RNA Segregation

Author:
Jia, Tony Z.; Bapat, Niraja V.; Verma, Ajay; Mamajanov, Irena; Cleaves, H. James; Chandru, Kuhan
Source:
Biomacromolecules 2021 v.22 no.4 pp. 1484-1493
ISSN:
1526-4602
Subject:
chemical composition,   etc   ; RNA; evolution; fluorescence; polyesters;     Show all 5 Subjects
Abstract:
... Nucleic acid segregation and compartmentalization were likely essential functions that primitive compartment systems resolved during evolution. Recently, polyester microdroplets generated from dehydration synthesis of various α-hydroxy acids (αHA) were suggested as potential primitive compartments. Some of these droplets can differentially segregate and compartmentalize organic dyes, proteins, and ...
DOI:
10.1021/acs.biomac.0c01697

6. Effective Electrochemical Modulation of SERS Intensity Assisted by Core–Shell Nanoparticles

Author:
Guo, Jing; Yan, Xingxu; Xu, Mingjie; Ghimire, Govinda; Pan, Xiaoqing; He, Jin
Source:
Analytical chemistry 2021 v.93 no.10 pp. 4441-4448
ISSN:
1520-6882
Subject:
chemical composition,   etc   ; analytical chemistry; electrochemistry; electrodes; gold;     Show all 5 Subjects
Abstract:
... An effective and reversible tuning of the intensity of surface-enhanced Raman scattering (SERS) of nonelectroactive molecules at nonresonance conditions by electrochemical means has been developed on plasmonic molecular nanojunctions formed between Au@Ag core–shell nanoparticles (NPs) and a gold nanoelectrode (AuNE) modified with a self-assembled monolayer. The Au@Ag nanoparticle on nanoelectrode ...
DOI:
10.1021/acs.analchem.0c04398

7. Carbon materials for ion-intercalation involved rechargeable battery technologies

Author:
Wang, Gang; Yu, Minghao; Feng, Xinliang
Source:
Chemical Society reviews 2021 v.50 no.4 pp. 2388-2443
ISSN:
1460-4744
Subject:
chemical composition,   etc   ; batteries; cations; electrochemistry; energy; graphene;     Show all 6 Subjects
Abstract:
... The ever-increasing energy demand motivates the pursuit of inexpensive, safe, scalable, and high-performance rechargeable batteries. Carbon materials have been intensively investigated as electrode materials for various batteries on account of their resource abundance, low cost, nontoxicity, and diverse electrochemistry. Taking use of the reversible donor-type cation intercalation/de-intercalation ...
DOI:
10.1039/d0cs00187b

8. Aqueous synthesis of tin- and indium-doped WO₃ films via evaporation-driven deposition and their electrochromic properties

Author:
Uchiyama, Hiroaki; Nakamura, Yoshiki; Igarashi, Seishirou
Source:
RSC advances 2021 v.11 no.13 pp. 7442-7449
ISSN:
2046-2069
Subject:
chemical composition,   etc   ; color; crystal structure; temperature; wavelengths;     Show all 5 Subjects
Abstract:
... M-doped WO₃ (M = Sn or In) films were prepared from aqueous coating solutions via evaporation-driven deposition during low-speed dip coating. Sn- and In-doping were easily achieved by controlling the chemical composition of simple coating solutions containing only metal salts and water. The crystallinity of the WO₃, Sn-doped WO₃, and In-doped WO₃ films varied with heating temperature, where amorph ...
DOI:
10.1039/d1ra00125f

9. Surface self-assembly involving the interaction between S and N atoms

Author:
Wu, Tianhao; Xue, Na; Wang, Zhichao; Li, Jie; Li, Yaru; Huang, Wei; Shen, Qian; Hou, Shimin; Wang, Yongfeng
Source:
Chemical communications 2021 v.57 no.11 pp. 1328-1331
ISSN:
1364-548X
Subject:
chemical composition,   etc   ; density functional theory; electrostatic interactions;     Show all 3 Subjects
Abstract:
... Controllable molecular self-assembly is vital for nanostructure construction. Here, three different self-assembling networks are realized by varying the chemical composition of the molecular building blocks of the same architecture. This is the first time that S⋯N electrostatic attraction has been employed to regulate surface self-assembly. All molecular structures are characterized using low-temp ...
DOI:
10.1039/d0cc07931f

10. Model membrane systems to reconstitute immune cell signaling

Author:
Céspedes, Pablo F.; Beckers, Daniel; Dustin, Michael L.; Sezgin, Erdinc
Source:
TheFEBS journal 2021 v.288 no.4 pp. 1070-1090
ISSN:
1742-464X
Subject:
chemical composition,   etc   ; biomimetics; immunological synapse; plasma membrane;     Show all 4 Subjects
Abstract:
... Understanding the broad variety of functions encoded in cellular membranes requires experimental systems mimicking both their biochemical composition and biophysical properties. Here, we review the interplay between membrane components and the physical properties of the plasma membrane worth considering for biomimetic studies. Later, we discuss the main advantages and caveats of different model me ...
DOI:
10.1111/febs.15488

11. Characterization of the submarine disposal of a Bayer effluent (Gardanne alumina plant, southern France): I. Size distribution, chemical composition and settling rate of particles forming at the outfall

Author:
Jacquet, Stéphanie; Monnin, Christophe; Herlory, Olivier; Mille, Deborah; Dufour, Aurélie; Oursel, Benjamin; Heimbürger-Boavida, Lars-Eric; D’onofrio, Sébastien; Layglon, Nicolas; Garnier, Cédric
Source:
Chemosphere 2021 v.263 pp. 127695
ISSN:
0045-6535
Subject:
chemical composition,   etc   ; aluminum oxide; pH; seawater; France;     Show all 5 Subjects
Abstract:
... The submarine discharge of the high pH clarified Bayer effluent of the Gardanne alumina plant (Marseille region, France) leads to the formation of concretions at the outfall 324 m underwater and to a plume of white particles. The bulk chemical composition of the concretions has been determined by SF-ICP-MS. Mg and Al are the major elements measured with concentrations of a few hundred mg g⁻¹. Ca a ...
DOI:
10.1016/j.chemosphere.2020.127695

12. Quality of nanoplastics and microplastics ecotoxicity studies: Refining quality criteria for nanomaterial studies

Author:
Kokalj, Anita Jemec; Hartmann, Nanna B.; Drobne, Damjana; Potthoff, Annegret; Kühnel, Dana
Source:
Journal of hazardous materials 2021 v.415 pp. 125751
ISSN:
0304-3894
Subject:
chemical composition,   etc   ; color; ecotoxicology; hydrophobicity; nanoplastics; polystyrenes; toxicity;     Show all 7 Subjects
Abstract:
... It is becoming increasingly important to develop assessment criteria for the quality of nanoplastics studies. This study is an attempt to establish such criteria based on those developed for engineered nanomaterials, the GUIDEnano and DaNa criteria being two representatives. These criteria were applied to studies on polystyrene nanoparticles (PS NPs), which currently represent the majority of stud ...
DOI:
10.1016/j.jhazmat.2021.125751

13. A review of efflorescence kinetics studies on atmospherically relevant particles

Author:
Ma, Shuaishuai; Pang, Shufeng; Li, Jing; Zhang, Yunhong
Source:
Chemosphere 2021 v.277 pp. 130320
ISSN:
0045-6535
Subject:
chemical composition,   etc   ; aerosols; atmospheric chemistry; climate; hygroscopicity; relative humidity; temperature;     Show all 7 Subjects
Abstract:
... The efflorescence transitions of aerosol particles have been intensively investigated due to their critical impacts on global climate and atmospheric chemistry. In the present study, we present a critical review of efflorescence kinetics focusing on three key issues: the efflorescence relative humidity (ERH) and the influence factors for aerosol ERH (e.g. particle sizes, and temperature); efflores ...
DOI:
10.1016/j.chemosphere.2021.130320

14. Detailed chemical characterization of the composition and variability of soil gas at remediated residential heating oil discharges

Author:
Lu, Xin; Weiner, Ellen; Smiley, Elizabeth; Widdowson, Mark; Isaacman-VanWertz, Gabriel
Source:
Journal of hazardous materials 2021 v.413 pp. 125372
ISSN:
0304-3894
Subject:
chemical composition,   etc   ; carbon; observational studies; petroleum; risk; soil air; Virginia;     Show all 7 Subjects
Abstract:
... Underground storage tanks containing petroleum or other hazardous substances are used widely for residential storage of home heating oil. Spills and leaks of fuel from these tanks are common, and resulting subsurface petroleum vapors may pose health risks. However, understanding of this risk is limited by a lack of observational data on the chemical composition of vapors from discharged fuel. We p ...
DOI:
10.1016/j.jhazmat.2021.125372

15. Effect of the roasting degree on flavor quality of large-leaf yellow tea

Author:
Guo, Xiangyang; Ho, Chi-Tang; Schwab, Wilfried; Wan, Xiaochun
Source:
Food chemistry 2021 v.347 pp. 129016
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; flavor; food chemistry; heterocyclic compounds; odors; tea;     Show all 6 Subjects
Abstract:
... Roasting is crucial for producing large-leaf yellow tea (LYT) as it substantially affects chemical composition and sensory quality. However, the effect of roasting degree on LYT flavor quality is not clear. To investigate the effect of roasting degree on LYT flavor, the odor profiles and sensory evaluations of LYTs produced with small fire, medium fire and old fire roasting (OF) were determined. T ...
DOI:
10.1016/j.foodchem.2021.129016

16. Comparison of Cd(II) adsorption properties onto cellulose, hemicellulose and lignin extracted from rice bran

Author:
Wu, Qinglan; Ren, Mingfei; Zhang, Xinxia; Li, Cheng; Li, Ting; Yang, Zhi; Chen, Zhengxing; Wang, Li
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.144 pp. 111230
ISSN:
0023-6438
Subject:
chemical composition,   etc   ; adsorbents; adsorption; cellulose; hemicellulose; lignin; rice; rice bran;     Show all 8 Subjects
Abstract:
... Rice bran, an underutilized by-product obtained from outer rice layers, has received wide interest due to its abundance, eco-friendliness, and low cost. In this research, cellulose, hemicellulose and lignin as the main components of rice bran were fractionated, and their Cd(II) adsorption capacity, behavior and mechanism were further studied. The adsorption capacity of cellulose for Cd(II) was 5.7 ...
DOI:
10.1016/j.lwt.2021.111230

17. The polysaccharides of winemaking: From grape to wine

Author:
Jones-Moore, Hayden R.; Jelley, Rebecca E.; Marangon, Matteo; Fedrizzi, Bruno
Source:
Trends in food science & technology 2021 v.111 pp. 731-740
ISSN:
0924-2244
Subject:
chemical composition,   etc   ; arabinose; fermentation; galactose; grapes; pectins; winemaking; wines; yeasts;     Show all 9 Subjects
Abstract:
... Polysaccharides are a major class of complex macromolecules present in the wine matrix. These polysaccharides can be classified as being either grape or yeast derived. The key polysaccharides identified within the wine matrix are the pectic polysaccharides: polysaccharides rich in arabinose and galactose (PRAG), rhamnogalactouronans (RG-I and RG-II) and yeast mannoproteins (MP). The transformation ...
DOI:
10.1016/j.tifs.2021.03.019

18. Chemical composition of Xylopia nitida: Diterpenes and alkaloids

Author:
Vieira, Mariano G.S.; Gramosa, Nilce V.; Silveira, Edilberto R.
Source:
Biochemical systematics and ecology 2021 v.95 pp. 104229
ISSN:
0305-1978
Subject:
chemical composition,   etc   ; Xylopia; alkaloids; chemotaxonomy; diterpenoids; ecology; quinoline; stigmasterol;     Show all 8 Subjects
Abstract:
... From the roots of Xylopia nitida, were obtained a new natural diterpene, the ent-kaur-16-en-18,19-diol and a new aporphine alkaloid, the 5,6,6a,7-tetrahydro-1-methoxy-(6aS)-4H-benzo[de][1,3]benzodioxolo [5,6-g]quinoline. Some known compounds were also isolated, ent-trachylobane, ent-trachyloban-18,19-diol, ent-trachyloban-18-oic acid, ent-trachyloban-19-oic acid, (−)-xylopine, 1-O-ethyl-β-D-glucop ...
DOI:
10.1016/j.bse.2021.104229

19. Chemical content and sensory changes of Oloroso Sherry wine when aged with four different wood types

Author:
García-Moreno, M. Valme; Sánchez-Guillén, Manuel M.; Delgado-González, Manuel J.; Durán-Guerrero, Enrique; Rodríguez-Dodero, M. Carmen; García-Barroso, Carmelo; Guillén-Sánchez, Dominico A.
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.140 pp. 110706
ISSN:
0023-6438
Subject:
chemical composition,   etc   ; Castanea; color; oxidation; polyphenols; sensory evaluation; sherry; wood;     Show all 8 Subjects
Abstract:
... Oloroso Sherry Wine is a fortified Sherry wine obtained by oxidation and ageing in American oak barrels of 500 L–600 L. In this work, the study of the suitability of other types of woods for the ageing of these wines was carried out. To compare the characteristics of the alternative woods, an oloroso wine was aged in four groups of 16 L barrels made of French oak, Spanish oak, chestnut, as well as ...
DOI:
10.1016/j.lwt.2020.110706

20. Engineering the interface in graphene oxide/epoxy composites using bio-based epoxy-graphene oxide nanomaterial to achieve superior anticorrosion performance

Author:
Wu, Hao; Cheng, Li; Liu, Chengbao; Lan, Xijian; Zhao, Haichao
Source:
Journal of colloid and interface science 2021 v.587 pp. 755-766
ISSN:
0021-9797
Subject:
chemical composition,   etc   ; adhesion; corrosion; electrochemistry; epoxides; graphene; graphene oxide; polymers;     Show all 8 Subjects
Abstract:
... The protective performance of graphene/polymer composite coatings largely depends on the interface design in resin matrix. Herein, we report the synthesis of bio-based cardanol epoxy modified graphene oxide (GODN) nanomaterial and its application in epoxy coatings for the achievement of fine interface toward high performance anticorrosion composite coatings. The chemical composition of prepared GO ...
DOI:
10.1016/j.jcis.2020.11.035