固相微萃取-气相色谱法测定水中痕量有机氯农药

Determination of Trace Organic Chlorinated Pesticides in Surface Water by SPME-GC

建立了固相微萃取-气相色谱联用快速测定水中14种痕量有机氯农药的方法,对比研究了浸入式直接固相微萃取与顶空固相微萃取两种方式对不同有机氯农药的富集效率,优化了试验条件。方法线性关系良好,检出限为0.1 ng/L^10 ng/L,定量下限为0.2 ng/L^40 ng/L,RSD<8%,实际水样的加标回收率为67.0%~133%。

The method of solid phase micro extraction-gas chromatography was established for fast determination of 14 trace organic chlorinated pesticides. The extraction efficiencies of both headspace SPME and direct SPME for the 14 organic chlorinated pesticides were contrasted. After test condition was optimized there were good linearity relations between the compounds and instrumental responds, the detective limits were 0.1 ng/L - 10 ng/L, the quantification limits 0.2 ng/L -40 ng/L, RSD 〈8%, recoveries of samples 67.0% - 133%.