Photodegradation of acetochlor in water and UV photoproducts identified by mass spectrometry
文献类型：期刊论文
| 作者 | Zheng, HH; Ye, CM |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2003 |
| 卷号 | 15期号:6页码:783-790 |
| 关键词 | acetochlor photoproducts photodegradation GC/MS herbicide |
| 英文摘要 | The sunlight photodegradation half-lives of 20 mg/L acetochlor were 151, 154 and 169 days in de-ionized water, river water and paddy water, respectively. When exposed to ultraviolet (UV) light, acetochlor in aqueous solution was rapidly degraded. The half-lives were 7.1, 10.1, and 11.5 min in de-ionized water, river water and paddy water, respectively. Photoproducts of acetochlor were identified by gas chromatography/mass spectrometry (GC/MS) and found at least twelve photoproducts resulted from dechlorination with subsequent hydroxylation and cyclization processes. The chemical structures of ten photoproducts were presumed on the basis of mass spectrum interpretation and literature data. Photoproducts are identified as 2-ethyl-6-methylaniline; N,N-diethylaniline; 4,8-dimethyl-2-oxo-1,2,3,4-tetrahydroquinoline; 2-oxo-N-(2-ethyl-6-methylphenyl)-N-(ethoxymethyl) acetamide; N-(ethoxymethyl)-2'-ethyl-6'-methylformanilide; 1-hydroxyacetyl-2-ethoxyl-7-ethylind ole; 8-ethyl-1-ethoxymethyl-2-oxo-1,2,3,4-tetrahydroquinoline; 4,8-dimethyl-1-ethoxymethyl-2-oxo-1,2,3,4-tetrahydroquinoline; 2-hydroxy-2'-ethyl-6'-methyl-N-(ethoxymethyl) acetanilide and a compound related to acetochlor. The other two photoproducts were detected by GC/MS although their chemical structure was unknown. |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000186365600011 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23704]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zheng, HH,Ye, CM. Photodegradation of acetochlor in water and UV photoproducts identified by mass spectrometry[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2003,15(6):783-790. |
| APA | Zheng, HH,&Ye, CM.(2003).Photodegradation of acetochlor in water and UV photoproducts identified by mass spectrometry.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,15(6),783-790. |
| MLA | Zheng, HH,et al."Photodegradation of acetochlor in water and UV photoproducts identified by mass spectrometry".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 15.6(2003):783-790. |
入库方式： OAI收割
来源：生态环境研究中心
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