A systemic study of enantioselectivity of isocarbophos in rice cultivation: Enantioselective bioactivity, toxicity, and environmental fate
文献类型： 外文期刊
作者： Di, Shanshan 1 ; Cang, Tao 1 ; Qi, Peipei 1 ; Wang, Xiangyun 1 ; Xu, Mingfei 1 ; Wang, Zhiwei 1 ; Xu, Hao 1 ; Wang, Qiang 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Standard Agroprod, Hangzhou 310021, Zhejiang, Peoples R China
2.Agr Minist, Key Lab Pesticide Residue Detect, Hangzhou 310021, Zhejiang, Peoples R China
3.Key Lab Detect Pesticide Residues & Control Zheji, Hangzhou 310021, Zhejiang, Peoples R China
4.State Key Lab Breeding Base Zhejing Sustainable P, Hangzhou 310021, Zhejiang, Peoples R China
关键词： Isocarbophos enantiomers; Bioactivity; Toxicity; Rice cultivation; Enantioselective degradation
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）
ISSN： 0304-3894
年卷期： 2019 年 375 卷
页码：
收录情况： SCI
摘要： The enantioselective bioactivity and acute toxicity to target and non-target model species, and environmental fate of isocarbophos (ICP) in rice cultivation were investigated systematically. Bioactivity and toxicity of S-(+)-ICP was significantly greater than R-(-)-ICP, and the difference was 2.9-101 times. Based on the toxic unit analysis, the toxic interaction of ICP enantiomers for target pests was synergistic effect, while for non-target fish was concentration addition or antagonistic effect. Rac-ICP displayed equivalent bioactivity to S-(+)-ICP under the equal dosage, but the toxicity of rac-ICP to the tested fishes reduced at least 2 times. Rac-ICP is more suitable than optically pure S-(+)-ICP for rice cultivation based on the toxicity and bioactivity results. In environmental behavior experiments, the main metabolite of ICP, isocarbophos oxon (ICPO) was detected in rice plants, water, rice and rice hull samples. S-( +)-ICP and S-(+ )-ICPO were more persistent than the R-form in these matrices. The comprehensive data of ICP enantiomers in rice cultivation will improve environmental and ecological risk assessment, and using racemate may be more safe and reasonable in rice cultivation system.
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