Heterogeneous reactions of suspended parathion, malathion, and fenthion particles with NO3 radicals
文献类型：期刊论文
| 作者 | Liu, Changgeng ; Yang, Bo ; Gan, Jie ; Zhang, Yang ; Liang, Miao ; Shu, Xi ; Shu, Jinian |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：生态环境研究中心
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