Determination of herbicide ZJ0273 residue in rapeseed by radioisotopic tracing method

Determination of herbicide ZJ0273 residue in rapeseed by radioisotopic tracing method
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放射性同位素示踪法测定油菜籽中除草剂ZJ0273残留量

DOI:
10.1016/j.foodchem.2008.08.095
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发表时间:
2009-05
期刊:
影响因子:
8.8
通讯作者:
L. Lu
L. Lu
中科院分区:
农林科学1区
文献类型:
--
作者:
W. Wang;Z. M. Yang;Q. F. Ye;A. L. Han;L. Lu

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采用放射性同位素示踪法测定了除草剂ZJ0273(丙基4-(2-(4,6-二甲氧基吡啶-2-氧基)苄胺)苯甲酸酯)在模拟田间条件下在油菜中的残留量。放射性高效液相色谱和高效液相色谱质谱分析表明,ZJ0273是油菜中唯一的放射性残留物。根据标记物ZJ0273的14c放射性和比活性测定,在红粘土(S1)和浅海黄壤土(S2)中,4-(2-(4,6-二甲氧基吡啶-2-氧基)[苯基u - 14c6]苯氨基苯甲酸丙酯(RCZJ)采后在油菜幼苗(Brassica napus L.)中的残留量分别为0.67和1.24nmol/株。s1和s2幼苗1kg油菜籽中rczj含量分别为40.13和45.33nmol, ZJ0273含量分别为16.97和19.17μg。结果表明,由于ZJ0273的根系吸收较差,ZJ0273在油菜叶片中的转运能力较弱,ZJ0273在油菜籽粒中只有微量残留。
Residue of herbicide ZJ0273 (propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)benzylamino)benzoate) in rapeseed under simulated field conditions was evaluated by radioisotopic tracing method. Radio-HPLC and HPLC–MS analysis revealed that the parent ZJ0273 is the only radioactive residue in rapeseed. The residue of propyl 4-(2-(4,6-dimethoxypyrimidin-2-yloxy)[phenyl-U-14C6]benzylamino)benzoate (RCZJ) in postharvest rapeseed from the rape seedlings (Brassica napus L.) in red clayey soil (S1) and in fluvio marine yellow loamy soil (S2) were 0.67 and 1.24nmol/plant, respectively, based on the14C radioactivity and the specific activity of the labelled ZJ0273. The RCZJs in the rapeseed (1kg) from the seedlings in S1and in S2were 40.13 and 45.33nmol, respectively, and the amounts of ZJ0273 in the rapeseed (1kg) were 16.97 and 19.17μg. The results suggested that only a trace level of residue of ZJ0273 presents in rapeseed due to the poor root absorption of ZJ0273 and the weak translocation of ZJ0273 from rape leaves.
DOI: --
发表时间: 2003
期刊: China Oils and Fats
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发表时间: 2008-03
影响因子: 1.8
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Zheng-Min Yang;Q. Ye;Long Lu
通讯作者: Zheng-Min Yang;Q. Ye;Long Lu
DOI: --
发表时间: 2005
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Tang Qing
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发表时间: 2006
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作者:
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