| 气相色谱法测定青贮玉米中4类农药残留量的研究 |
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| 引用本文： | 王帅,刘会会,张亮,王雅静,闫艳华,汤思凝,刘蕊,赵海涛.气相色谱法测定青贮玉米中4类农药残留量的研究[J].饲料研究,2021(3):90-92. |
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| 作者姓名： | 王帅 刘会会 张亮 王雅静 闫艳华 汤思凝 刘蕊 赵海涛 |
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| 作者单位： | 唐山市食品药品综合检验检测中心;河北省农产品质量安全检测技术创新中心;唐山市功能性农产品产业技术研究院 |
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| 基金项目： | 河北省二期现代农业产业技术体系草业创新团队建设项目(项目编号:HBCT2018160403);河北省重点研发计划项目(项目编号:19227516D)。 |
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| 摘 要： | 试验建立青贮玉米中4类6种(异丙甲草胺、氰戊菊酯、溴氰菊酯、氯氟氰菊酯、腐霉利、虫螨腈)农药残留的气相色谱检测方法。样品经组织捣碎,乙腈提取,振荡分层,弗罗里矽固相萃取柱净化,洗脱液于50℃氮吹至5 mL以下后用正己烷定容,过0.22μm有机系滤膜,采用RTX-5和wondacap-1色谱柱分离。结果表明:青贮玉米中的4类农药在0.02、0.06、0.10 mg/kg添加水平下的回收率为82.92%~105.83%,RSD值为2.44%~7.02%,方法的定量限是0.02 mg/kg。该方法样品前处理操作简便快捷、安全性高、准确度和灵敏度高,适用于青贮玉米中杀虫剂、杀菌剂、除草剂、杀螨剂4类农药残留的检测。
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| 关 键 词： | 气相色谱 青贮玉米 农药残留 |
Determination of four kinds of pesticide residues in silage corn by gas chromatography |
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| WANG Shuai,LIU Hui-hui,ZHANG Liang,WANG Ya-jing,YAN Yan-hua,TANG Si-ning,LIU Rui,ZHAO Hai-tao.Determination of four kinds of pesticide residues in silage corn by gas chromatography[J].Feed Research,2021(3):90-92. |
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| Authors: | WANG Shuai LIU Hui-hui ZHANG Liang WANG Ya-jing YAN Yan-hua TANG Si-ning LIU Rui ZHAO Hai-tao |
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| Abstract: | To establish a method for the detection of four types of six pesticide residues(metolachlor, fenvalerate,deltamethrin, cyhalothrin, procymidone, and chlorfenapyr) in silage corn by gas chromatography. The sample was mashed by tissue, extracted with acetonitrile, separated by shaking, and purified with a Florisil solid-phase extraction column. The eluent was blown with nitrogen at 50 ℃ to below 5 mL, and then the volume was fixed with hexane. After constant volume with hexane and passed through a 0.22 μm organic membrane, the target analytes were separated on the RTX-5 and wondacap-1 column. The results showed that the recoveries of four kinds of pesticides in silage corn were 82.92%~105.83% at the levels of 0.02, 0.06 and 0.10 mg/kg, RSD values were 2.44%~7.02%. The lowest quantitative concentration of the method was 0.02 mg/kg. The method is simple, rapid, safe, accurate and sensitive. It is suitable for the detection of insecticides, fungicides, herbicides and acaricides in silage corn. |
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| Keywords: | gas chromatography silage corn organic phosphorus |
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