GC-ECD测定江永香姜中有机氯农药残留 |
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引用本文: | 杨小红,任红英,谭小林,谭德明.GC-ECD测定江永香姜中有机氯农药残留[J].安徽农业科学,2017,45(34):69-71,108. |
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作者姓名: | 杨小红 任红英 谭小林 谭德明 |
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作者单位: | 永州市食品质量安全监督检验中心,湖南永州,425000;永州市食品质量安全监督检验中心,湖南永州,425000;永州市食品质量安全监督检验中心,湖南永州,425000;永州市食品质量安全监督检验中心,湖南永州,425000 |
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基金项目: | 湖南省食品药品监督管理局食品药品安全科技项目 |
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摘 要: | 目的]建立气相色谱-电子捕获检测器检测(GC-ECD)江永香姜中有机氯农药残留的分析方法。方法]样品经正己烷-丙酮(4∶1,V/V)超声提取,过滤、盐析、干燥,经弗洛里硅土柱净化,用丙酮+正己烷(1∶9,V/V)洗脱,GC-ECD检测。结果]8种有机氯农药的检出限0.028~0.500μg/kg,加标回收率96.4%~100.2%,相对标准偏差RSD 1.3%~3.5%,符合国家标准要求。结论]该方法具有操作简单、准确、快速、灵敏、净化效果好等特点,适合江永香姜中有机氯农药残留的测定。
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关 键 词: | 香姜 气相色谱 有机氯农药 测定 |
Determination of Organochlorine Pesticides Residues in Jiangyong Ginger by GC-ECD |
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Abstract: | Objective] The gas chromatograph-electron capture detector (GC-ECD) was established to test organochlorine pesticides residues in Jiangyong ginger.Method]The pesticides were ultrasonic extracted with N-hexane-acetone(4∶ 1,V/V),filtration,salting out,dry,and then it was purified by florida silica column and was eluted with acetone and n-hexane (1∶9,V/V).Afterwards GC-ECD was used to determine organochlofine pesticides.Result] The limits of detection for 8 organochlorine pesticides were 0.028 ~ 0.500 μg/kg,and the recoveries were 96.4% ~100.2%.The relative standard deviations (RSD) were 1.3% ~ 3.5%.The resulted accord with national standard.Conclusion] The resulted showed that this method has simple operation,rapid,good sensitivity,reproducibility and high efficiency,which could be applied to the quantitative for organochlorine pesticides residues in ginger. |
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Keywords: | Ginger Gas chromatography Organochlorine pesticides Test |
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