六种合成拟除虫菊酯类杀虫剂的气液色谱筛选方法
Gas-liquid chromatographic screening method for six synthetic pyrethroid insecticides.
作者信息
Bolygó E, Zakar F
出版信息
J Assoc Off Anal Chem. 1983 Jul;66(4):1013-7.
A method was developed for simultaneously determining 6 synthetic pyrethroid insecticides (fenpropanate, tetramethrin, permethrin, cypermethrin, fenvalerate, and deltamethrin) in apple, orange, grape, lemon, tomato, green pepper, and paprika, and sugar beet root and leaves. The pesticides were extracted with acetone and partitioned into methylene chloride. The extract was purified by column chromatography on active carbon-magnesia-diatomaceous earth and then on alumina. Analysis by gas-liquid chromatography with 63Ni electron capture detection was completed in 6 min on a 3% SE-30 liquid phase, using a short column. Recoveries from fortified samples ranged from 68 to 89% in the range of 0.3-1.0 ppm and from 67 to 83% in the range of 0.02-0.2 ppm.
开发了一种同时测定苹果、橙子、葡萄、柠檬、番茄、青椒、辣椒粉以及甜菜根和叶中6种合成拟除虫菊酯类杀虫剂（甲氰菊酯、胺菊酯、氯菊酯、氯氰菊酯、氰戊菊酯和溴氰菊酯）的方法。用丙酮提取农药，然后分配到二氯甲烷中。提取物先通过活性炭 - 氧化镁 - 硅藻土柱色谱法纯化，再通过氧化铝柱色谱法纯化。使用短柱，在3% SE - 30液相上，通过气液色谱法和63Ni电子捕获检测，6分钟内完成分析。在0.3 - 1.0 ppm范围内，加标样品的回收率为68%至89%；在0.02 - 0.2 ppm范围内，回收率为67%至83%。
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