摘要
建立了水产品中8种有机磷农药残留同时测定的方法,选择乙腈提取,ENVI-C18串联PSA固相萃取柱净化,经丙酮/正己烷混合溶液(体积比1∶1)洗脱,洗脱液氮吹浓缩后采用气相色谱外标法定量。8种有机磷农药在0.050 mg/L～1.00 mg/L范围内线性良好,检出限在1.8μg/kg～2.5μg/kg之间,3个添加水平加标样品平行测定的相对标准偏差为1.1%～5.7%,回收率为69.8%～116%。
Established an analytical method for the determination of 8 organophosphorous pesticide residues in aquatic products by GC/FPD. The sample was extracted by acetonitrile, purified by ENVI-C15 and PSA solid- phase extraction, cartridges using acetone/n-hexane （ 1 ： 1, V： V） as eluent. The eluent was blown to dryness under a stream of nitrogen, was then injected into the GC system to quantitative analysis. Calibration curves of high cor- relation were for 8 organophosphorous pesticide residues in a range between 0. 050 mg/L and 1.00 mg/L, detec- tion limits were in the range of 1.8 μg/kg - 2.5 μg/kg, RSD of spiked replicate samples ranged from 1.1% 5.7% and the recovery rates were from 69.8% -116%.
出处
《环境监测管理与技术》
2012年第6期53-56,共4页
The Administration and Technique of Environmental Monitoring
关键词
有机磷农药
固相净化
气相色谱法
水产品
Organophosphorous pesticides
Solid phase purify
Gas chromatography
Aquatic products
