期刊论文

中文

农药学学报

1008-7303

2008

10

1

113-116

10.3321/j.issn:1008-7303.2008.01.019

农业部农药残留项目（NC0600023）.

本校为第一机构

研究了多效唑在油菜植株、土壤以及油菜籽中的残留分析方法及残留动态。样品采用二氯甲烷提取，硅镁吸附剂层析柱净化，气相色谱测定。结果表明：多效唑在油菜植株、土壤和油菜籽中的添加回收率分别为88．10％～110．2％、93．4％～108．8％和83．5％～108．7％；变异系数分别为：1．09％～5．27％、1．47％～3．36％和0．98％～5．13％。多效唑的最小检出量为1．0×10~(-11)g，土样、植株、油菜籽中的多效唑最低检出浓度分别为0．01、0．05和0．05mg／kg。多效唑在植株和土壤中的半衰期分别是4．80～7．12d和12．31～17．11d，在植株中的降解速率大于在土壤中的降解速率。

A method for determination of the residue and degradation dynamics of paclobutrazol in rapeseed plant,rapeseed and soil was described. Samples were extracted with dichloromethane and the extracts were purified on Si-Mg absorbent column, followed by determination using GC. The recovery was from 88.10% to 110.2% for the rapeseed plant,93.4%- 108.8% for soil and 83.5%- 108.7% for the rapeseed with coefficients of variation of 1.09% - 5.27%, 1.47% - 3.36% and 0.98% - 5.13%, respectively. The minimum detectable limits of the method was 1.0 x 10 -11 g- The minimum detectable concenlxation was 0.01 m...