| 嘧菌酯在大豆中的残留及消解动态 |
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| 引用本文： | 殷利丹,侯志广,陈超,吉慧敏,魏小虎,逯忠斌,王岩.嘧菌酯在大豆中的残留及消解动态[J].农药学学报,2011,13(3):304-309. |
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| 作者姓名： | 殷利丹 侯志广 陈超 吉慧敏 魏小虎 逯忠斌 王岩 |
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| 作者单位： | 1.吉林农业大学 资源与环境学院,长春 130118 |
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| 摘 要： | 建立了大豆中嘧菌酯残留的气相色谱测定方法,并研究了其在植株和大豆籽粒中的消解动态和最终残留。样品经乙腈提取,弗罗里硅土玻璃层析柱净化,通过气相色谱-电子捕获检测器(GC- ECD)测定。结果表明,在0.025、0.25、2.0 mg/kg 3个添加水平下,嘧菌酯的平均回收率为93.4%~101.1%,相对标准偏差(RSD)为1.2%~7.5%;最小检出量为1×10-12 g,最低检测浓度为0.025 mg/kg。施药剂量为推荐剂量的1.5倍(有效成分337.5 g/hm2)时,嘧菌酯在大豆植株中的半衰期为0.8~3.6 d。在225、337.5 g/hm2剂量下施药3~4次,测得收获期大豆中嘧菌酯的残留量均低于国际食品法典委员会(CAC)规定的最大残留限量(MRL) 0.5 mg/kg。按照推荐剂量225 g/hm2处理,建议我国嘧菌酯在大豆上的MRL值可暂定为0.5 mg/kg,安全间隔期为14 d,施药次数不超过3次。
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| 关 键 词： | 嘧菌酯 大豆 残留 气相色谱 |
| 收稿时间： | 2010/10/16 0:00:00 |
| 修稿时间： | 2010/12/11 0:00:00 |
Residues and decline study of azoxystrobin in soybean |
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| YIN Li-dan,HOU Zhi-guang,CHEN Chao,JI Hui-min,WEI Xiao-hu,LU Zhong-bin and WANG Yan.Residues and decline study of azoxystrobin in soybean[J].Chinese Journal of Pesticide Science,2011,13(3):304-309. |
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| Authors: | YIN Li-dan HOU Zhi-guang CHEN Chao JI Hui-min WEI Xiao-hu LU Zhong-bin and WANG Yan |
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| Institution: | 1.College of Resource and Environmental Science,Jilin Agricultural University,Changchun 130118,China |
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| Abstract: | A gas chromatography method was developed for determining azoxystrobin residues in soybean.The samples were extracted with acetonitrile,and cleaned up by glass column chromatography with Florisil and determined by gas chromatograph with electronic capture detector(GC-ECD).Results showed that the fortified concentration of azoxystrobin from 0.1 mg/kg to 2.0 mg/kg,the ranges of average recoveries and coefficient variation of the method were 93.4% to 101.1%,1.2% to 7.5% respectively.The limit of detection was ... |
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| Keywords: | azoxystrobin soybean residue gas chromatography |
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