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Ⅰ.乳中含氯农药的快速测定法虽然有许多快速测定乳中含氯农药残留量的方法,但农药回收率及净化情况往往是不满意的。本文报告了一种乳中农药残留量分析法,在定量提取乳中含氯农药时,提取出的脂类物质很少,这样通过小型氟罗里土柱层析时就易被去除,然后用气液色谱法测定样品及添加标准的样品,从二者峰高值的差计算农药回收率。[方法]用气相色谱进行测定,备两个电子捕获鉴定器,放射源均为10毫居里~(63)Ni 源。涂3%OV-17和2%二甘醇丁二酸酯(DEGS)/0.5%磷酸于80～100目的 Chromosorb-W(HP)上,分别填充于两个2m×3mm 的柱中。操作条件:鉴定器:240℃,柱
I. Rapid Determination of Chlorine-Containing Pesticides in Milk Although there are many ways to rapidly determine the amount of chlorine-containing pesticide residues in milk, the recovery and cleanliness of pesticides are often unsatisfactory. This paper reports a method for the analysis of residual pesticide residues in milk. When quantitatively extracting chlorine-containing pesticides in milk, very few lipids are extracted, so that they can be easily removed by small-scale flocculant column chromatography Gas-liquid chromatography and standard samples were added, and the pesticide recovery was calculated from the difference between the two peak values. [Method] The two electron capture detectors were prepared by gas chromatography with the source of 10 millicuries ~ (63) Ni as source. Apply 3% OV-17 and 2% DEGS / 80% Chromosorb-W (HP) to 80-100 mesh and fill in 2 × 3mm columns. Operating conditions: Identifier: 240 ° C, column