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Rapid Commun Mass Spectrom

Title:		Quantification and risk assessment of organic products resulting from non-thermal plasma removal of toluene in nitrogen
Author(s):		Guo T; Du X; Peng Z; Xu L; Dong J; Li J; Cheng P; Zhou Z;
Address:		"School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China. School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei, 230009, China. Institute of Environment Safety and Pollution Control, Jinan University, Guangzhou, China, 510632"
Journal Title:		Rapid Commun Mass Spectrom
Year:		2017
Volume:		31
Issue:		17
Page Number:		1424 - 1430
DOI:		10.1002/rcm.7917
ISSN/ISBN:		1097-0231 (Electronic) 0951-4198 (Linking)
Abstract:		"RATIONALE: Non-thermal plasma (NTP) has proven to be an effective approach for the removal of volatile organic compounds (VOCs). However, harmful organic by-products, produced during NTP-mediated removal of VOCs, hinder practical applications of this technology. It is necessary to characterize the organic by-products to assess their health risks. METHODS: A method is proposed for analyzing and evaluating organic by-products for NTP-mediated removal of VOCs in this work. NTP generated by a coaxial dielectric barrier discharge (DBD) reactor was used for the removal of a model VOC, toluene, in nitrogen. Organic products were characterized using a real-time proton transfer reaction time-of-flight mass spectrometry (PTR-TOF-MS) apparatus. RESULTS: The PTR-TOF-MS apparatus has been shown to be effective for real-time high-sensitivity detection of trace VOCs. The main observed organic compounds, with concentrations on the order of ppb/ppm, were hydrogen cyanide, acetonitrile, propanenitrile, benzene, benzonitrile, and benzyl nitrile, etc. CONCLUSIONS: A health-related index (HRI) was introduced to assess the health risks associated with these organic products. The HRI was not correlated with the removal efficiency (eta), with higher eta possibly yielding higher HRI, associated with higher health risks. Specific input energy (SIE) was a key factor affecting the formation of the observed organic products and their HRI values. We conclude that in practical applications, SIE, HRI, and eta must be balanced"
Keywords:
Notes:		"PubMed-not-MEDLINEGuo, Teng Du, Xubing Peng, Zhen Xu, Li Dong, Junguo Li, Jianquan Cheng, Ping Zhou, Zhen eng England 2017/06/07 Rapid Commun Mass Spectrom. 2017 Sep 15; 31(17):1424-1430. doi: 10.1002/rcm.7917"