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本文作者应用薄层层析分离有机氯农药,然后用硝酸银丙酮溶液显色进行测定,此法简易、灵敏。把市售已涂吸附剂等的层析板浸于事先已滤去硝酸银悬浮颗粒的硝酸银丙酮液(0.25g分析纯硝酸银溶于10ml水中,用丙酮稀释至500ml;或0.250g分析纯硝酸银溶于10ml水中,加10ml 2-苯氧乙醇,用丙酮稀释至500ml。置暗处储存)中浸一下,取出置室温中风干。使用前避光储存于干燥器中。用2.5μl注射器将农药标准液点于距板底边1.5cm处,置槽中展开。展开剂用正己烷:丙酮:甲醇:二乙基胺(100:50:10:1)~*,或苯:乙酸乙酯
The authors apply thin-layer chromatography separation of organochlorine pesticides, and then silver nitrate solution for color determination, this method is simple and sensitive. A commercially available adsorbent coated with a chromatographic plate was immersed in a silver nitrate solution (0.25 g of analytical silver nitrate dissolved in 10 ml of water, diluted to 500 ml with acetone or 0.250 g of analytical grade Silver nitrate dissolved in 10ml of water, add 10ml 2-phenoxyethanol, diluted with acetone to 500ml set the dark place), dip, remove the room temperature and air-dry. Store in a dry place without light before use. With 2.5μl syringe pesticide standard point from the bottom of the plate 1.5cm Department, home slot deployment. Developing solvent: Hexane: Acetone: Methanol: Diethylamine (100: 50: 10: 1) ~ *, or benzene: