Heterogeneous Reactions of Pirimiphos-Methyl and Pirimicarb with NO3 Radicals
文献类型：期刊论文
| 作者 | Wang, Youfeng ; Yang, Bo ; Zhang, Peng ; Zhang, Wang ; Liu, Changgeng ; Shu, Xi ; Shut, Jinian |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY A
 |
| 出版日期 | 2012 |
| 卷号 | 116期号:44页码:10802－10809 |
| ISSN号 | 1089-5639 |
| 中文摘要 | Pirimiphos-methyl (PMM) and pirimicarb (PM) are two typical N,N-dialkyl substituted pyrimidine pesticides. The heterogeneous reactions of suspended PMM and PM particles with NO3 radicals are investigated using an online aerosol time-of-flight mass spectrometer and a real-time atmospheric gas analysis mass spectrometer. Three products for PMM and five products for PM are observed and assigned with the aid of GC/MS. Phosphoric acid 2-diethylamino-6-methyl-4-pyrimidirtyl dimethyl ester and 2-(dimethylamino)5,6-dimethyl-4-hydroxy-pyrimidine are the main reaction products observed for PMM and PM, respectively. The effective rate constants for the reactions of PMM and PM particles with NO3 radicals are (9.9 +/- 0.3) x 10(-12) and (7.5 +/- 0.3) x 10(-3) cm(3) molecule(-1) s(-1), respectively, obtained using a mixed-phase relative rate method. Geometries and energies of transition states (TS) and intermediates (IM) are obtained by DFT calculation to elucidate the detailed mechanism of the P=S group oxidation into the P=O group for PMM. The theoretical studies present the reasonable intermediates including the S-oxide and the diradical (IM1(a) and IM2(a)). The mechanism explanation may provide useful information for understanding the degradation mechanism of organothionophosphorus compounds in the environment. |
| WOS记录号 | WOS:000310769100019 |
| 公开日期 | 2014-11-05 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7950]  |
| 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 | Wang, Youfeng,Yang, Bo,Zhang, Peng,et al. Heterogeneous Reactions of Pirimiphos-Methyl and Pirimicarb with NO3 Radicals[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2012,116(44):10802－10809. |
| APA | Wang, Youfeng.,Yang, Bo.,Zhang, Peng.,Zhang, Wang.,Liu, Changgeng.,...&Shut, Jinian.(2012).Heterogeneous Reactions of Pirimiphos-Methyl and Pirimicarb with NO3 Radicals.JOURNAL OF PHYSICAL CHEMISTRY A,116(44),10802－10809. |
| MLA | Wang, Youfeng,et al."Heterogeneous Reactions of Pirimiphos-Methyl and Pirimicarb with NO3 Radicals".JOURNAL OF PHYSICAL CHEMISTRY A 116.44(2012):10802－10809. |
入库方式： OAI收割
来源：生态环境研究中心
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