摘要
目的建立一种固相膜萃取-高效液相色谱法,测定饮用水中12种氨基甲酸酯类农药残余量。方法采用高效液相色谱测定法:将滤水样真空后,使用乙酸乙酯洗脱滤膜,最后甲醇溶解和氮气吹干洗脱液。结果 6次重复性试验后,结果表明浓度0.05~12.5 mg/L甲萘威,以及浓度0.1~25 mg/L其他几种物质,其线性关系良好,相关系数r均≥0.999。最低检测浓度:S/N=11时对应的样品浓度,检出限:S/N=4。平均回收率在56.3%~96.4%,精密度<7.6%。结论根据本文所提出的方法,分离效果好,样品前处理便捷,检测灵敏度较高,并且能减少有机试剂的用量。
Objective To establish a Solid Phase Extraction-High Performance Liquid Chromatography to test drinking water 12 carbamate pesticide for residual amount. Methods HPLC methods： the sample after vacuum filtration using ethyl acetate membrane,and finaly dissolved in methanol and nitrogen blow eluent.Results After 6 repeated tests,it showed that the concentration of 0.05 mg / L^12.5 mg / L carbaryl,and the concentration of 0.1 mg / L^25 mg / L several other substances,a good linear correlation coefficient,r≥0.999. Minimum detectable concentration： S / N=11 corresponding sample concentration,detection limit： S / N=4. The average recovery rate was 56.3% ~96.4%,and accuracy〈7.6%. ConclusionAccording to the proposed method,it has good separation,sample pretreatment convenient,high sensitivity,and can reduce the amount of organic reagents.
出处
《中国卫生标准管理》
2015年第24期12-13,共2页
China Health Standard Management
