摘要
对粮谷中丙线磷残留量的检测，采用新法以甲醇提取样品，经液液苹取净化后，再以气相色谱／氮磷检测器测定，测定低限为 ０．００μｇ／ｍｌ的浓度范围内，标准曲线呈良好的线性关系 γ＝ ０．９９６，变异系数为５．８％－７．８％，回收率为７２．０％－１００．２％．取代了常规法的繁锁操作程序，使操作步骤更加简便，分析速度快且灵敏度高，适用范围广。
A new determination method was used for detecting ethoprophos residue in cereals. The ethoprophos sample was extracted by methanol. After the sample was liquid-to-liquid extracted and purified, it was chromatographically detected, using a nitrogen-phosphorus detector. The minimum detection limit was 0.005 -μg/ml.The standard curve(γ=0.996)had a good line. The coefficient of variation was 5.8%.-7.8% .The sample recovery rate was 72.0% - 100.2% .This determination method can be used for replacing the traditionally complex detection procedures because of its simpler and faster determination, higher sensitivity, and wider scope of application.
