Obana H, Kikuchi K, Okihashi M, Hori S
Osaka Prefectural Institute of Public Health, Japan.
Analyst. 1997 Mar;122(3):217-20. doi: 10.1039/a606063c.
Residual organophosphorus pesticides in foods were determined by accelerated solvent extraction (ASE), gel permeation chromatography and GC-FPD. Pesticides were extracted at 100 degrees C under 1500 psi pressure in less than 20 min. Wet samples were extracted after mixing with Extrelut drying agent. Four foods were spiked with 19 pesticides at 0.1 ppm or less. The average recoveries of these pesticides were 80-90% and the precision was < 10%. Both methamidophos and acephate gave 37-50% recoveries and 6-40% precision. These results suggested that ASE can be used to extract residues of organophosphorus pesticides in foods.
采用加速溶剂萃取（ASE）、凝胶渗透色谱法和气相色谱 - 火焰光度检测法（GC - FPD）测定食品中的残留有机磷农药。在100℃、1500磅力/平方英寸压力下，不到20分钟即可完成农药的萃取。湿样品与硅藻土干燥剂混合后进行萃取。向四种食品中添加了浓度为0.1 ppm及以下的19种农药。这些农药的平均回收率为80 - 90%，精密度小于10%。甲胺磷和乙酰甲胺磷的回收率为37 - 50%，精密度为6 - 40%。这些结果表明，加速溶剂萃取法可用于萃取食品中的有机磷农药残留。
