« Previous Abstract[Analysis of head volatile constituents of Polyonum cuspidatum flower by HS-GC/MS]    Next AbstractAroma binding and stability in brewed coffee: A case study of 2-furfurylthiol »

Int J Environ Res Public Health

Title:		Biotoxicity of Water-Soluble UV Photodegradation Products for 10 Typical Gaseous VOCs
Author(s):		Sun Z; Kang IS; Wu Q; Xi J; Hu H;
Address:		"Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China. szqqh123@163.com. Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China. ISKqh123@163.com. State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China. wqyqh123@163.com. Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China. xijinying@tsinghua.edu.cn. State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China. xijinying@tsinghua.edu.cn. Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, China. hhyqh123@163.com. State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China. hhyqh123@163.com"
Journal Title:		Int J Environ Res Public Health
Year:		2018
Volume:		20180718
Issue:		7
Page Number:		-
DOI:		10.3390/ijerph15071520
ISSN/ISBN:		1660-4601 (Electronic) 1661-7827 (Print) 1660-4601 (Linking)
Abstract:		"Ultraviolet (UV) photodegradation is increasingly applied to control volatile organic compounds (VOCs) due to its degradation capabilities for recalcitrant compounds. However, sometimes the UV photodegradation products are also toxic and can affect human health. Here, 10 VOCs at 150~200 ppm in air were treated using a laboratory-scale UV reactor with 185/254 nm irradiation, and the biotoxicity of their off-gas was studied by investigating their off-gas absorption solutions. The CO(2) increase and VOC decrease were 39~128 ppm and 0~42 ppm, respectively, indicating that the VOCs and their products were mineralized in off-gas absorption solutions. The total organic carbon (TOC) of the absorption solutions are 4~20 mg?O+L(-1). Luminescent bacteria and Daphnia magna were used to detect the acute toxicity, and an umu assay was used to determine the genotoxic potential. Trichloroethylene showed a highest toxicity to luminescent bacteria, while chlorobenzene had the lowest toxicity. Water-soluble UV photodegradation products for styrene are very toxic to Daphnia magna. In the umu assay, the genotoxicities of off-gas absorption solutions of trichloroethylene, methylbenzene, ethyl acetate, butyl alcohol, and styrene were 51.26, 77.80, 86.89, 97.20, and 273.62 mg (4-NQO).L(-1) respectively. In addition, the analysis of the genotoxicity/TOC and intermediates products indicated that the off-gas absorption solutions of styrene, trichloroethylene, and butyl alcohol contain many highly toxic substances"
Keywords:		"Animals Bacteria/*drug effects Daphnia/*drug effects Environmental Exposure/*adverse effects Humans Photolysis Ultraviolet Rays Volatile Organic Compounds/*metabolism/*toxicity Water Pollutants, Chemical/*metabolism Daphnia magna UV photodegradation VOCs;"
Notes:		"MedlineSun, Zhuqiu Kang, In-Sun Wu, Qianyuan Xi, Jinying Hu, Hongying eng Research Support, Non-U.S. Gov't Switzerland 2018/07/20 Int J Environ Res Public Health. 2018 Jul 18; 15(7):1520. doi: 10.3390/ijerph15071520"