Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals
	Liu, Changgeng ; Yang, Bo ; Gan, Jie ; Zhang, Yang ; Liang, Miao ; Shu, Xi ; Shu, Jinian
刊名	CHEMOSPHERE
	2012
卷号	87 期号:5 页码:470－476
关键词	Organophosphorus pesticides Heterogeneous reaction NO3 radicals GC/MS Aerosol mass spectrometry
ISSN号	0045-6535
中文摘要	Organophosphorus pesticides (OPPs) emit into the atmosphere in both gas and particulate phases via spray drift from treatments and post-application emission, but most of their degradations in the atmosphere are not well known. In this study, the heterogeneous reactions of nitrate (NO3) radicals with three typical OPPs (parathion, malathion, and fenthion) absorbed on azelaic acid particles are investigated using an online vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS). The reaction products observed with the VUV-ATOFMS are identified on the basis of GC/MS analysis of the products in the reaction between NO3 radicals and the coating of the pesticide. Paraoxon is identified as the only product of parathion; malaoxon and bis(1,2-bis-ethoxycarbonylethyl)disulfide as the products of malathion; fenoxon, fenoxon sulfoxide, fenthion sulfoxide, fenoxon sulfone, and fenthion sulfone as the products of fenthion. The degradation rates of parathion, malathion, and fenthion under the experimental conditions are 5.5 x 10(-3), 5.6 x 10(-2), and 3.3 x 10(-2) s(-1), respectively. The pathways of the heterogeneous reactions between the three OPPs and NO3 radicals are proposed. The experimental results reveal the possible transformations of these OPPs through the oxidation of NO3 radicals in the atmosphere. (C) 2011 Elsevier Ltd. All rights reserved.
WOS记录号	WOS:000302524100005
公开日期	2014-11-05
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7951]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Liu, Changgeng,Yang, Bo,Gan, Jie,et al. Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals[J]. CHEMOSPHERE,2012,87(5):470－476.
APA	Liu, Changgeng.,Yang, Bo.,Gan, Jie.,Zhang, Yang.,Liang, Miao.,...&Shu, Jinian.(2012).Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals.CHEMOSPHERE,87(5),470－476.
MLA	Liu, Changgeng,et al."Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals".CHEMOSPHERE 87.5(2012):470－476.