| 罗晶晶,聂长明,刘小文,任红英,袁志辉,周姬.气相色谱测定江永香姜中有机磷农药残留[J].南华大学学报(自然科学版),2017,31(1):91~95.[LUO Jing-jing,NIE Chang-ming,LIU Xiao-wen,REN Hong-ying,YUAN Zhi-hui,ZHOU Ji.Determination of Oganophosphorus Pesticide Residues in Jiangyong Sweet-smelting Ginger by Gas Chromatography[J].Journal of University of South China(Science and Technology),2017,31(1):91~95.] |
| 气相色谱测定江永香姜中有机磷农药残留 |
| Determination of Oganophosphorus Pesticide Residues in Jiangyong Sweet-smelting Ginger by Gas Chromatography |
| 投稿时间：2016-10-14 |
| DOI： |
| 中文关键词: 气相色谱法 有机磷农药 江永香姜 残留检测 |
| 英文关键词:gas chromatography organophosphorus pesticides Jiangyong sweet-smelting ginger residue detection |
| 基金项目:湖南省重点实验室开放基金项目(XNZW15C16);湖南省教育厅优秀青年项目(14B071);永州市科技计划项目(永财企字[2014]33号);湖南省食品药品监督管理局食品药品安全科技项目(湘食药科R201522) |
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| 中文摘要: |
| 为建立气相色谱法(GC)测定江永香姜中有机磷农药残留量的分析方法,从永州市江永县采集香姜试样,将试样用含体积比为1%乙酸的乙腈溶液提取,再经无水硫酸镁和醋酸钠净化,以C18色谱柱分离待测物,基质匹配标准溶液外标法定量,最后用气相色谱法(GC)法检测香姜中有机氯农药残留,从而达到定性的效果.试验表明,6种有机磷农药在0~1 mg/L的范围内线性关系良好,相关系数均大于0.990,检出限为0.012~ 0.071mg/kg,相对标准偏差2.22%~9.30%,试样添加回收试验的平均回收率为68.0%~111.0%.以上结果表明,气相色谱法具有测定有机磷农药种类多、净化效果好、准确度和精密度高等优点,能够满足香姜农药残留检测要求. |
| 英文摘要: |
| To establish a detection method for the organophosphorus pesticides residues in Jiang Yong sweet-smelting ginger by Gas Chromatography,samples of sweet-smelting ginger were collected from Jiangyong County,Yongzhou City.The sample was extracted by acetonitrile solution containing 1% acetic acid,purified by anhydrous magnesium sulfate and sodium acetate,seperated by C18 chromatographic column,tested by matrix matching external standard method of quantitative standard solution,finally gas chromatography (GC) method was used to detect organochlorine pesticide residues in the fragrant ginger to achieve the qualitative goals.Under above conditions,the standard linear range of organochlorine pesticides was 0~1 mg/L;correlation coefficient r was above 0.99,the minimum detection limits were 0.012~0.071 mg/kg,the relative standard deviations (RSDs) were 2.22％~9.30％ and the recycling test sample of average recoveries were 68.0% ~ 111.0%.The results show that this method has the merits of good purifying effects,high accuracy and precision.It is accorded with pesticide residues testing standards in sweet-smelting ginger at home and abroad. |
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