Results 21 to 30 of about 7,922 (214)

VOC contamination in hospital, from stationary sampling of a large panel of compounds, in view of healthcare workers and patients exposure assessment. [PDF]

PLoS ONE, 2013
BACKGROUND: We aimed to assess, for the first time, the nature of the indoor air contamination of hospitals. METHODS AND FINDINGS: More than 40 volatile organic compounds (VOCs) including aliphatic, aromatic and halogenated hydrocarbons, aldehydes ...
Vincent Bessonneau, Luc Mosqueron, Adèle Berrubé, Gaël Mukensturm, Sylvie Buffet-Bataillon, Jean-Pierre Gangneux, Olivier Thomas   +6 more
doaj   +1 more source

Spatiotemporal variations and source analysis of VOCs in the environmental air of a typical pesticide remediation site

Frontiers in Environmental Science, 2023
As efforts to mitigate soil and groundwater pollution intensify nationwide, the incidence of volatile organic compound (VOC) contaminated sites has risen significantly.
Xuwei Li, Xuwei Li, Da Ding, Da Ding, Wenyi Xie, Wenyi Xie, Xuzhi Li, Xuzhi Li, Mengjie Wang, Mengjie Wang, Lingya Kong, Lingya Kong, Dengdeng Jiang, Dengdeng Jiang, Shaopo Deng, Shaopo Deng   +15 more
doaj   +1 more source

Transformation of 1,1,1-trichloroethane in an anaerobic packed-bed reactor at various concentrations of 1,1,1-trichloroethane, acetate and sulfate [PDF]

, 1997
Biotransformation of 1,1,1-trichloroethane (CH3CCl3) was observed in an anaerobic packed-bed reactor under conditions of both sulfate reduction and methanogenesis. Acetate (1 mM) served as an electron donor.
deBest, JH, Janssen, D.B.,, Weijling, A, Harder, W, Janssen, DB, Harder, W.,, Best, J.H. de,, Jongema, H, Weijling, A.,, Doddema, H.J.,, Jongema, H.,, Doddema, HJ   +11 more
core   +1 more source

Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations

Angewandte Chemie, EarlyView.
Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera, Francesco Basoccu, Andrea Porcheddu   +2 more
wiley   +2 more sources

Specific Ion Effects of Chaotropic and Superchaotropic Anions Probed by Raman Hydration‐Shell Spectroscopy

Angewandte Chemie, EarlyView.
The vibrational frequencies of “dangling” water O─H bonds can be determined by Raman hydration‐ shell spectroscopy and used to differentiate chaotropes from kosmotropes and hydrophobes. Dangling O─H bonds are also detected around superchaotropic anions of the borate cluster type (B12X122−; X = H, F, Cl, Br, and I) but their frequencies do not directly ...
Werner M. Nau, Denilson Mendes de Oliveira, Andres S. Urbina, Harald Knorke, Jonas Warneke, Andrea Barba‐Bon, Dor Ben‐Amotz   +6 more
wiley   +2 more sources

Comparison of Hydrogen Specification in National Standards for China [PDF]

E3S Web of Conferences, 2019
Hydrogen specifications for different scenarios are various. Based on national standards for China, a comparison of hydrogen specification standards is discussed in this paper, including specification standards for industrial hydrogen, pure hydrogen ...
Yang Yanmei, Wang Geng, Zhang Lan, Zhang Sinan, Lin Ling   +4 more
doaj   +1 more source

Single‐Atom Iron‐Catalyzed Oxidative Esterification: From Methylarenes to the Upcycling of Polystyrene and Lignin‐Derived Feedstocks

Angewandte Chemie, EarlyView.
Heterogeneous iron‐catalyzed environmentally benign and sustainable CH‐oxidative esterification methodology has been developed for the synthesis of esters. This challenging reaction has been achieved by the rational design of specific single atom iron‐based catalyst with Fe‐N4 active centers, which empowered the oxidative esterification of methyl and ...
Zhuang Ma, Binyu Zhang, Hui Yang, Yue Hu, Junzheng Yu, Yanbin Cui, Jun Zhao, Matthias Beller, Rajenahally V. Jagadeesh   +8 more
wiley   +2 more sources

Geographical Distribution and Risk Assessment of Volatile Organic Compounds in Tributaries of the Han River Watershed

Agronomy, 2021
Volatile organic compounds (VOCs), with negative impacts on the aquatic ecosystem, are increasingly released into the environment by anthropogenic activities.
Jong-Kwon Im, Yong-Chul Cho, Hye-Ran Noh, Soon-Ju Yu   +3 more
doaj   +1 more source

Characterization and Source Analysis of Pollution Caused by Atmospheric Volatile Organic Compounds in the Spring, Kunming, China

Atmosphere, 2023
The surface atmospheric O3 concentration in Kunming shows a significant upward trend, with high values mainly occurring in March–May. Volatile organic compounds (VOCs) are one of the most important precursors of O3.
Shuyang Xie, Yuanjun Gong, Yunbo Chen, Kai Li, Junfeng Liu   +4 more
doaj   +1 more source

Numerical Study of CO₂ Removal from Inhalational Anesthesia System by Using Gas-Ionic Liquid Membrane

ChemEngineering, 2023
Inhalational anesthesia is supplied through an assisted ventilation system. It is mostly composed of xenon or nitrous oxide, halogenated hydrocarbons (HHCs), and oxygen.
Alon Davidy
doaj   +1 more source