Results 21 to 30 of about 518,985 (185)

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

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

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

Exposure and reduction of lipophilic halogenated contaminants in rice

Grain & Oil Science and Technology
Rice, a primary food staple for over half of the global population, is susceptible to environmental pollution. The presence of lipophilic halogenated contaminants, including halogenated polycyclic aromatic hydrocarbons (XPAHs), polychlorinated biphenyls (
Wei Li, Shimin Wu, Lingzhi Cheong
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

Measurements of hydrocarbon emissions from a boreal fen using the REA technique [PDF]

Biogeosciences, 2006
Fluxes of biogenic volatile organic compounds (VOC) and methane were measured above a boreal fen. Vegetation on the fen is dominated by Sphagnum mosses and sedges.
S. Haapanala, J. Rinne, K.-H. Pystynen, H. Hellén, H. Hakola, T. Riutta   +5 more
doaj  

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

Characteristics and sources of halogenated hydrocarbons in the Yellow River Delta region, northern China

Atmospheric research, 2019
As important ozone-depleting substances and potential greenhouse gases, halocarbons have attracted much attention since 1970s. To better understand the characteristics and sources of halocarbons in the Yellow River Delta (YelRD) region, an important oil ...
Penggang Zheng, Tianshu Chen, Can Dong, Yuhong Liu, Hong-yong Li, G. Han, Jingjing Sun, Lin Wu, Xiaomei Gao, Xinfeng Wang, Y. Qi, Qingzhu Zhang, Wen-xing Wang, L. Xue   +13 more
semanticscholar   +1 more source

An innovative method for soil vapor extraction to improve extraction and tail gas treatment efficiency

Scientific Reports, 2022
This study aims to improve soil vapor extraction (SVE) to address its shortcomings in treating halogenated hydrocarbon-contaminated soil. Indoor simulation experiments based on SVE were conducted to provide technical guidance for the remediation of 1,2 ...
Yang Ding, Yuling Zhang, Zhiqun Deng, Hewei Song, Jili Wang, Haizhao Guo   +5 more
doaj   +1 more source

Comparative Analysis of Polycyclic Aromatic Hydrocarbons and Halogenated Polycyclic Aromatic Hydrocarbons in Different Parts of Perilla frutescens (L.) Britt.

Molecules, 2022
Perilla frutescens (L.) Britt., a medicinal herb and edible plant, is very popular among East Asian countries. The perilla leaves, stems and seeds can be used as traditional medicines and foods.
Pengfei Wang, Bo Jin, Chaojie Lian, Kaijing Guo, Chen Ma   +4 more
doaj   +1 more source