色谱2011，Vol.29Issue(8)：773-780,8.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
Determination of 23 organochlorine pesticides in soil and sediment by gas chromatography coupled with dual columns and dual electron capture detectors
朱恒怡 1柳文媛 1丁曦宁 2赵永刚3
作者信息
- 1. 中国药科大学药物分析教研室,江苏南京210009
- 2. 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
- 折叠
摘要
Abstract
Gas chromatography (GC) coupled with dual columns and dual electron capture detectors (ECD) was established to determine 23 organochlorine pesticides in 5 soil and 5 sediment samples. Microwave assisted extraction and solid phase extraction with a Florisil column and sulfur cleanup with copper powder were used in sample pre-processing. Chromatographic analysis was performed on DB-XLB and DB-1701 capillary columns by internal standard method. This method showed good extraction efficiency, high sensitivity and good reproducibility. In the same linear range of 0. 005 - 0. 5 mg/L of 23 pesticides, the correlation coefficients were higher than 0. 997. The average spiked recoveries were 50% - 119% with the relative standard deviations (ESDs) of 0.9%-16.1% (n =6) in 5 soil samples, and were 52% - 120% with RSDs of 0. 3% -28.4% (n =6) in 5 sediment samples, respectively. The detection limits were 0. 000 05 - 0. 000 5 mg/kg. The results indicate that this method is suitable for the determination of the 23 organochlorine pesticides in soil and sediment samples.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Key words
gas chromatography coupled with dual columns and dual electron capture detectors / microwave extraction/ organochlorine pesticides/ soil/ sediment分类
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朱恒怡,柳文媛,丁曦宁,赵永刚..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[J].色谱,2011,29(8):773-780,8.
