| 黄瓜与土壤中醚菌酯残留的气相分析方法研究 |
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| 引用本文： | 葛 谦 苟春林 姜 瑞. 黄瓜与土壤中醚菌酯残留的气相分析方法研究[J]. 安徽农业科学, 2014, 0(20): 6690-6691 |
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| 作者姓名： | 葛 谦 苟春林 姜 瑞 |
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| 作者单位： | 宁夏农林科学院农产品质量标准与技术研究所,宁夏银川750002 |
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| 摘 要： | [目的]建立黄瓜和土壤中醚菌酯残留检测方法。[方法]用乙腈提取黄瓜和土壤样品,经弗罗里硅柱净化后用气相色谱ECD检测器检测。[结果]在醚菌酯添加水平为0.05、0.20、0.50 mg/kg 3个浓度时,黄瓜中回收率为80.2%~114.0%,变异系数为2.1%~5.8%;土壤中回收率为95.1%~106.5%,变异系数为3.1%~7.3%,醚菌酯的最小检出量为2.5×10-2ng,最低检出浓度为2.5μg/kg。[结论]该方法灵敏度高、检测限低、重现性好,完全能够满足黄瓜和土壤中醚菌酯残留的检测要求。
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| 关 键 词： | %醚菌酯悬浮剂 黄瓜 土壤 残留检测 |
Determination of Kresoxim-methyl Residues in Cucumber and Soil by Capillary Gas Chromatography |
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| Affiliation: | GE Qian, GOU Chun-lin et al ( Quality Standard and Technique Institute of Agricultural Products, Ningxia Academy of Agriculture and Forestry, Yinchuan, Ningxia 750002) |
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| Abstract: | [ Objective ] The aim was to develop a method to determine kresoxim-methyl residues in cucumber and soil. [ Method] The cucumber and soil samples were extracted by acetonitrile, and then detected by capillarygas chromatography after florisil-phase extraction. [ Result ] Under the addition level of 0.05, 0.20, 0.50 mg/kg, the recovery rates of kresoxim-methyl in cucumber and soil samples were 80.2% -114.0%, 95.1% - 106.5% with RSD of 2. 1% -5.8% and 3.1% -7.3% respectively. The LOQ and LOD were 2.5 × 10 ^-2 ng and 2.5 μg/kg. [ Conclusion] This method was sensitive with low detectable limitation and good precision, which could be perfectly adopted in determining the kresoxim-methyl residues in cucumber and soil. |
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| Keywords: | 30% kresoxim-methyl suspensions Cucumber Soil Residue detection |
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