气相色谱-双柱双电子捕获检测器测定土壤及沉积物中23种有机氯农药

色谱 , 2011, 29(8): 773-780. doi: 10.3724/SP.J.1123.2011.00773

气相色谱-双柱双电子捕获检测器测定土壤及沉积物中23种有机氯农药

朱恒怡 ^1, , 柳文媛 ^2, , 丁曦宁 ^3, , 赵永刚 ^4,

1.中国药科大学药物分析教研室,江苏南京,210009

2.中国药科大学药物分析教研室,江苏南京210009;药物质量与安全预警教育部重点实验室中国药科大学,江苏南京210009

3.江苏省环境监测中心,江苏南京,210036

4.江苏省环境监测中心,江苏南京,210036

关键词：双柱双电子捕获检测器气相色谱法 , 微波萃取 , 有机氯农药 , 土壤 , 沉积物

Determination of 23 organochlorine pesticides in soil and sediment by gas chromatography coupled with dual columns and dual electron capture detectors

建立了微波萃取,弗罗里硅土固相萃取柱及铜粉除硫净化,双柱双电子捕获检测器(ECD)-气相色谱法(GC)测定5种不同质地土壤及5处不同来源沉积物中的23种有机氯农药(OCPs).采用内标法定量,在0.005 ～0.5mg/L的质量浓度范围内,替代物和各种农药标准品的线性相关系数(r2)均大于0.997.5种土壤及5处沉积物中23种OCPs的平均加标回收率分别为50％～ 119％和52％～120％,相对标准偏差分别为0.9％～16.1％(n=6)和0.3％～28.4％(n=6),检出限为0.00005～0.0005 mg/kg.结果表明,该方法重现性好、灵敏度高、线性关系好,可以满足简便、快速、准确测定农药残留的要求,可大范围推广使用.

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气相色谱-双柱双电子捕获检测器测定土壤及沉积物中23种有机氯农药

Determination of 23 organochlorine pesticides in soil and sediment by gas chromatography coupled with dual columns and dual electron capture detectors

参考文献