| 甲萘威在棉花和土壤中的残留和消解动态 |
| |
| 引用本文： | 马婧玮,李通,张军锋,周玲,司敬沛,吴绪金.甲萘威在棉花和土壤中的残留和消解动态[J].现代农药,2014(5):28-30. |
| |
| 作者姓名： | 马婧玮 李通 张军锋 周玲 司敬沛 吴绪金 |
| |
| 作者单位： | 河南省农科院 农业质量标准与检测技术研究所、河南省粮食质量安全与检测重点实验室、农业部农产品质量安全风险评估实验室 郑州,郑州 450002 |
| |
| 基金项目： | 农业部农药检定所残留项目（2011P433） |
| |
| 摘 要： | 采用液相色谱-串联质谱法(LC-MS/MS)研究了甲萘威在棉花和土壤中的残留消解动态,为棉花上甲萘威的安全使用提供科学依据。样品经甲醇+二氯甲烷(体积比1∶99)提取,氨基固相萃取柱净化,后经LC-MS/MS测定其残留量。甲萘威在棉叶上的半衰期为1.1~1.9 d;在土壤中的半衰期为4.3~6.2 d。试验条件下,甲萘威在收获前14 d、收获前7 d、收获期棉籽中的残留量≤0.023 mg/kg。建议30%聚醛·甲萘威颗粒剂在推荐剂量下最多施药1次,采收间隔期为7 d。
|
| 关 键 词： | 甲萘威 棉花 土壤 消解动态 残留 |
Residue Dynamics of Carbaryl in Cotton and Soil |
| |
| MA Jing-wei,LI Tong,ZHANG Jun-feng,ZHOU Ling,SI Jing-pei,WU Xu-jin.Residue Dynamics of Carbaryl in Cotton and Soil[J].Modern Agrochemicals,2014(5):28-30. |
| |
| Authors: | MA Jing-wei LI Tong ZHANG Jun-feng ZHOU Ling SI Jing-pei WU Xu-jin |
| |
| Affiliation: | (Institute of Quality Standards ＆ Testing Technology for Agriculture, Henan Key Laboratory of Grain Quality and Safety and Testing, Laboratory of Quality ＆ Safety Risk Assessment for Agro-products (Zhengzhou), Ministry of Agriculture, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China) |
| |
| Abstract: | In order to provide scientific basis for the safe use of carbaryl on cotton, the degradation dynamics of carbaryl in cotton and soil were studied by LC-MS/MS. The sample was extracted with methanol ＋ dichloromethane （volume ratio of 1：99）, cleaned up by amino solid phase extraction column, then determined by LC-MS/MS. The results showed that the half-lives of carbaryl in cotton leaf and soil were 1.1-1.9 days and 4.3-6.2 days, respectively. The final residues in cotton seed were all under 0.023 mg/kg. The results suggested that metaldehyde ＋ carbaryl 30% GR could be used in cotton field at most one time and the pre-harvest interval should be 7 days. |
| |
| Keywords: | carbaryl cotton soil degradation dynamic residue |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
