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Fate of pyribambenz propyl (ZJ0273) in anaerobic soils revealed by position-specific C-14 labeling

文献类型： 外文期刊

作者： Wang, Wei 1 ; Yue, Long 1 ; Zhang, Sufen 1 ; Ye, Qingfu 1 ; Qi, Wenyuan 2 ; Wang, Haiyan 1 ; Chen, Ziyuan 1 ;

作者机构： 1.Zhejiang Univ, Inst Nucl Agr Sci, Hangzhou 310029, Zhejiang, Peoples R China

2.Shanghai Acad Agr Sci, Shanghai 201106, Peoples R China

3.Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA

关键词： ZJ0273;Position-specific C-14 labeling;Bound residue;Extractable residue;Mineralization

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： 2013 年 258 卷

页码：

收录情况： SCI

摘要： Pyribambenz propyl, or ZJ0273, is a new and widely used pyrimidynyloxybenzoic herbicide; however, its behavior and safety in anaerobic soils remain poorly understood. In this study, ZJ0273 was labeled with C-14 on its benzoate-, pyrimidyl- and benzyl- rings respectively, and applied to anoxic flooding soils to characterize its anaerobic fates. Over the 100 d incubation, the amended C-14-ZJ0273 was slightly mineralized to (CO2)-C-14 (<4%) or redistributed into the overlaying water (<10%), with the majority of the C-14 (82-98%) remaining in the soil. The residues in soil underwent a gradual transformation from extractable residues (ER) to bound residues (BR), with the percentage of C-14-BR increasing from 1.1 to 2.5% at day 5 to 23.2-47.2% at day 100. The proportion of C-14-ER, C-14-BR and (CO2)-C-14 depended both on the soil property and the labeling position. Generally, ZJ0273 has the highest tendency to form BR in fluvio-marine yellow loamy soil, and the mineralization on both the benzoate and benzyl rings tends to be more extensive in red-clayed soil than the other soils. The ring-specific labeling C-14 on three aromatic rings respectively provides full molecular information and yield information on sub-molecular level, i.e, the benzoate ring was generally more susceptible to cleavage than the pyrimidyl or benzyl rings (P<0.01). (C) 2013 Elsevier B.V. All rights reserved.

  • 相关文献

[1]The metabolism of a novel herbicide ZJ0273 in oilseed rape and crickweed. Yue, Ling,Ye, Qingfu,Wang, Haiyan,Wang, Wei,Han, Ailiang,Yue, Ling,Qi, Wenyuan. 2012

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