Then it was extracted with the petroleum ether and through the column of Florisil acidic siliceous earth in series, and determinated by wide bore capillary (OV 101 30m 0.53 mm) gas chromatography with electron capture detector.

• 样品农药残留经丙酮提取 ,凝结液除杂 ,石油醚萃取 ,弗罗里硅土柱净化 ,OV 1 0 1大口径毛细管柱分离 ,电子捕获检测器 (ECD)检测。