磁固相萃取结合超高效液相色谱串联质谱法检测绿茶中19种有机磷农药残留
TS272.7; 本文采用化学共沉淀法合成磁性石墨烯(Fe3O4@G),并将其作为一种磁固相萃取剂用于绿茶中有机磷农药的萃取富集,结合超高效液相色谱串联质谱技术,建立同时检测绿茶中 19种有机磷农药残留的分析方法.本实验选择吸附剂用量为 40 mg,萃取时间 20 min,样品溶液pH为 7,3.0 mL丙酮解吸,氯化钠用量为 4g.结果表明,在 5～500 μg/L范围内,线性相关系数大于 0.999,制备的Fe3O4@G材料具有良好的稳定性和可重复利用性.检出限(LOD)在 5.0～6.0 μg/kg,定量限(LOQ)在 15.0～20.0 μg/kg.当样品加标水平为 20.0、40.0...
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| Published in | 食品工业科技 Vol. 45; no. 3; pp. 253 - 261 |
|---|---|
| Main Authors | , , , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
合肥海关技术中心,食品安全分析与检测安徽省重点实验室,安徽合肥 230022%西宁海关技术中心,青海西宁 810000%上海海关动植物与食品检验检疫技术中心,上海 200003
01.02.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-0306 |
| DOI | 10.13386/j.issn1002-0306.2023030116 |
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| Abstract | TS272.7; 本文采用化学共沉淀法合成磁性石墨烯(Fe3O4@G),并将其作为一种磁固相萃取剂用于绿茶中有机磷农药的萃取富集,结合超高效液相色谱串联质谱技术,建立同时检测绿茶中 19种有机磷农药残留的分析方法.本实验选择吸附剂用量为 40 mg,萃取时间 20 min,样品溶液pH为 7,3.0 mL丙酮解吸,氯化钠用量为 4g.结果表明,在 5～500 μg/L范围内,线性相关系数大于 0.999,制备的Fe3O4@G材料具有良好的稳定性和可重复利用性.检出限(LOD)在 5.0～6.0 μg/kg,定量限(LOQ)在 15.0～20.0 μg/kg.当样品加标水平为 20.0、40.0、200.0 μg/kg时,回收率在 61.2%～94.9%之间,相对标准偏差(RSD,n=6)在 2.6%～10.2%之间.本方法适用范围广,前处理易操控,有机溶剂用量少,经济,安全,材料可重复使用,该磁分散固相萃取技术在茶叶中农药的富集分离有很好的应用前景. |
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| AbstractList | TS272.7; 本文采用化学共沉淀法合成磁性石墨烯(Fe3O4@G),并将其作为一种磁固相萃取剂用于绿茶中有机磷农药的萃取富集,结合超高效液相色谱串联质谱技术,建立同时检测绿茶中 19种有机磷农药残留的分析方法.本实验选择吸附剂用量为 40 mg,萃取时间 20 min,样品溶液pH为 7,3.0 mL丙酮解吸,氯化钠用量为 4g.结果表明,在 5～500 μg/L范围内,线性相关系数大于 0.999,制备的Fe3O4@G材料具有良好的稳定性和可重复利用性.检出限(LOD)在 5.0～6.0 μg/kg,定量限(LOQ)在 15.0～20.0 μg/kg.当样品加标水平为 20.0、40.0、200.0 μg/kg时,回收率在 61.2%～94.9%之间,相对标准偏差(RSD,n=6)在 2.6%～10.2%之间.本方法适用范围广,前处理易操控,有机溶剂用量少,经济,安全,材料可重复使用,该磁分散固相萃取技术在茶叶中农药的富集分离有很好的应用前景. |
| Abstract_FL | Magnetic graphene(Fe3O4@G)was synthesized as a magnetic solid phase extractor for the extraction and enrichment of organophosphorus pesticides in green tea by chemical coprecipitation method.Based on this,ultra high performance liquid chromatography tandem mass spectrometry method was developed for the determination of 19 organophosphorus pesticide residues in green tea.40 mg adsorbent and 4 g sodium chloride were used in this experiment with the pH of sample solution at 7 for 20 min extraction time,3.0 mL acetone desorption.The result showed that the prepared Fe3O4@G material had good stability and reusability with the linear correlation coefficients greater than 0.999 in the range of 5～500 μg/L.The limits of detection(LOD)and the limits of quantitation(LOQ)were 5.0～6.0 μg/kg and 15.0～20.0 μg/kg,respectively.The recoveries were between 61.2%and 94.9%with the relative standard deviations(RSD,n=6)in the range of 2.6%～10.2%when the samples were labeled at 20.0,40.0 and 200.0 μg/kg.This method was safe and economy with a wide application range,easier control of pretreatment,less amount of organic solvent and reusable materials,which has a good application prospect in the enrichment and separation of pesticides in tea by the magnetic dispersion solid phase extraction technology. |
| Author | 余晓峰 雷雨甜 吴琼 贾学颖 林童 伊雄海 韩芳 郭春丽 刘会佳 宋伟 |
| AuthorAffiliation | 合肥海关技术中心,食品安全分析与检测安徽省重点实验室,安徽合肥 230022%西宁海关技术中心,青海西宁 810000%上海海关动植物与食品检验检疫技术中心,上海 200003 |
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| Author_FL | SONG Wei YU Xiaofeng LIU Huijia JIA Xueying LIN Tong YI Xionghai WU Qiong HAN Fang GUO Chunli LEI Yutian |
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| DocumentTitle_FL | Determination of 19 Organophosphorus Pesticide Residues in Green Tea by Magnetic Solid Phase Extraction Combined with Ultra High Performance Liquid Chromatography Tandem Mass Spectrometry |
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| Keywords | magnetic solid phase extraction 绿茶 green tea organophosphorus pesticides ultra high performance liquid chromatography tandem mass spectrometry 有机磷农药 超高效液相色谱串联质谱 磁固相萃取 |
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| Publisher | 合肥海关技术中心,食品安全分析与检测安徽省重点实验室,安徽合肥 230022%西宁海关技术中心,青海西宁 810000%上海海关动植物与食品检验检疫技术中心,上海 200003 |
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| Title | 磁固相萃取结合超高效液相色谱串联质谱法检测绿茶中19种有机磷农药残留 |
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