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目的研究毛细管气相色谱法测定人参提取物中15种有机氯农药残留的方法。方法样品经石油醚为提取溶剂振荡提取后,经Florisil小柱净化,以毛细管气相色谱测定。结果实验结果表明在线性范围内相关系数r2>0.992,平均加标回收率为71.3%～103.9%,相对标准偏差为(RSD)为2.1%～11.0%,检出限为0.1～1.1μg·kg-1。结论研究方法能满足农药残留测定的要求。
Objective To study the method for the determination of 15 organochlorine pesticide residues in ginseng extract by capillary gas chromatography. Methods The samples were extracted with petroleum ether as the extraction solvent, extracted with Florisil cartridge and analyzed by capillary gas chromatography. Results The experimental results showed that the correlation coefficient r2> 0.992 in the linear range, the average recoveries were 71.3% ~ 103.9%, the relative standard deviations (RSDs) were 2.1% ~ 11.0%, and the detection limits were 0.1 ~ 1.1μg · kg -1. Conclusion The research methods can meet the requirements of pesticide residue determination.