丁草胺在小白菜、空心菜中残留分析方法研究

RESEARCH ON METHOD OF ANALYESE OF RESIDUES CONTENT OF BUTACHLOR IN BRASSICA CHINESIS LINN. AND IPOMOEAREPTANS (L.) POIR

摘要: 本文首次报道除草剂丁草胺在小白菜、空心菜中的残留分析方法。蔬菜样品以丙酮石油醚提取,经氧化铝活性炭净化,以GC-ECD检测。该方法最小检出量为7.54×10-15g,最小检出浓度为0.007ppm,平均回收率为98.6—105.5%和89.5—108%,变异系数(C·V%)分别为2.75—9.25%和0.78—6.7%。

Abstract: The method of analyses of residues content of herbicide butachlor in Brassica chinesis Linn. and Ipomoea reptans (L)Poir was first reported. The method of minimum detectable content was 7.54?10-15g. The minimum detectable concentration in Brassica chinesis Linn, was 0.007ppm and 0.002ppm in Ipomoea reptans (L.) Poir.The average recovery values were 98.6-105.5% and 89.5-108% and C.V (%) were 2.75-9.25 and 0.78-6.7. The terminal residues content of field vegetable samples would not detected out.