Mitchell L R
J Assoc Off Anal Chem. 1976 Jan;59(1):209-12.
A method for the determination of endosulfan I, endosulfan II, endosulfan sulfate, tetrasul, and tetradifon residues in fresh fruits and vegetables was studied collaboratively. The method consists of extraction of the product with acetonitrile, ether and elution from a Florisil column with mixtures of hexane, methylene chloride, and acetonitrile, and determination of the residues by electron capture gas-liquid chromatography. This method was studied by 8 collaborators, using apples and cucumbers as the samples. Each sample was spiked with 2 levels of each pesticide. The average per cent recoveries for apples and cucumbers, respectively were as follows: endosulfan I, 103.6 and 101.5; endosulfan II, 102.9 and 100.0; endosulfan sulfate, 100.9 and 92.9; tetrasul, 98.8 and 102.2; and tetradifon, 106.4 and 101.9. The method has been adopted as official first action.
协同研究了一种测定新鲜水果和蔬菜中硫丹I、硫丹II、硫丹硫酸盐、四螨嗪和三氯杀螨砜残留量的方法。该方法包括用乙腈提取样品，用乙醚萃取，再用己烷、二氯甲烷和乙腈的混合物从弗罗里硅土柱上洗脱，并用电子捕获气液色谱法测定残留量。8位合作者以苹果和黄瓜为样品对该方法进行了研究。每个样品添加两种浓度水平的每种农药。苹果和黄瓜的平均回收率分别如下：硫丹I，103.6%和101.5%；硫丹II，102.9%和100.0%；硫丹硫酸盐，100.9%和92.9%；四螨嗪，98.8%和102.2%；三氯杀螨砜，106.4%和101.9%。该方法已被采用为首次官方方法。
