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Transformation of C-14-pyrimidynyloxybenzoic herbicide ZJ0273 in aerobic soils
其他题名Transformation of C-14-pyrimidynyloxybenzoic herbicide ZJ0273 in aerobic soils
Wang HY(汪海燕); Yu ZY(余志扬); Yue L(岳玲); Han AL(韩爱良); ZHANG YANFEI; LI JUYING; Ye QF(叶庆富); Yang ZM(杨征敏); Lv L(吕龙)
2010
发表期刊Sci. Total Environ.
ISSN0048-9697
卷号408期号:10页码:2239-2244
摘要A soil metabolism study of propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoate (ZJ0273), a novel broad-spectrum herbicide, was carried out using C-14 labeled on two different rings, i e., [pyrimidine-4,6-C-14] ZJ0273 and [benzyl-U-C-14] ZJ0273 Ultralow liquid scintillation counting and LC-MS/MS were used to identify the degradation intermediates and quantify their dynamics in aerobic soils. Four aromatic intermediates, 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoic acid (M1), 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzamido)benzoic acid (M2), 2-(4,6-dimethoxypyrimidin-2-yloxy)benzoic acid (M3). and 4,6-dimethoxypyrimidm-2-ol (M4). were identified and their identity was further confirmed against authentic standards Analysis of metabolites suggested two degradation pathways (1) Upon loss of the propyl group. M1 was produced via hydrolysis of propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy) benzylamino)benzoate after which the C-N bond between rings A and B was cleaved by oxidation and biochemical degradation to yield M3. which was further converted into M4 and finally mineralized to CO2, and (2) the first step was the same as in pathway I, but M1 first underwent a carbonylation to form M2. The C-N bond between rings A and B of M2 was cleaved by hydrolysis to yield M3 Dynamic changes in the four metabolites in aerobic soils were also investigated by HPLC coupled analysis of radioactivity of isolated peaks. After a 100-day incubation. 1 7-9 7% of applied C-14 was found as M1, 0 3-1 1% as M2, 14 5-20 9% as M3, and 3 7-6 7% as M4 in the soils, and pH appeared to be the most influential soil property affecting the formation and dissipation of these metabolites. (C) 2010 Elsevier B V All rights reserved
学科领域氟化学
部门归属浙江大学; 中国科学院上海有机化学研究所
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收录类别SCI
语种英语
WOS记录号WOS:000276434400008
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sioc.ac.cn/handle/331003/19237
专题中科院有机氟化学重点实验室
通讯作者Ye QF(叶庆富); Lv L(吕龙)
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Wang HY,Yu ZY,Yue L,et al. Transformation of C-14-pyrimidynyloxybenzoic herbicide ZJ0273 in aerobic soils[J]. Sci. Total Environ.,2010,408(10):2239-2244.
APA 汪海燕.,余志扬.,岳玲.,韩爱良.,ZHANG YANFEI.,...&吕龙.(2010).Transformation of C-14-pyrimidynyloxybenzoic herbicide ZJ0273 in aerobic soils.Sci. Total Environ.,408(10),2239-2244.
MLA 汪海燕,et al."Transformation of C-14-pyrimidynyloxybenzoic herbicide ZJ0273 in aerobic soils".Sci. Total Environ. 408.10(2010):2239-2244.
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