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| 在线固相萃取-HPLC法测定公共绿地土壤中新烟碱类农药残留 |
| Simultaneous Determination of Five Neonicotinoid Residues in Soil of Urban Public Green Area by On line SPE HPLC Systems |
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| DOI： |
| 中文关键词: 新烟碱类农药 在线固相萃取 高效液相色谱法 土壤 |
| 英文关键词: Neonicotinoid pesticide residues On line solid phase extraction High performance liquid chromatography Soils |
| 基金项目:国家自然科学基金资助项目(No.81573202，81402723)；河北省食品药品监督管理局科技基金资助项目（No.Pt 2014043) |
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| 中文摘要: |
| 土壤样品经二氯甲烷-乙腈混合溶液超声提取后,用PEP固相萃取柱在线净化，再用HPLC法测定样品中吡虫啉、啶虫脒、噻虫嗪、噻虫啉、烯啶〖JP2〗虫胺等5种新烟碱类农药残留。通过优化试验条件，使该方法在0.01 mg/L~2.00 mg/L〖JP〗范围内线性良好，当取样量为3.00 g时，方法检出限为0.002 mg/kg ~0.003 mg/kg。8种土壤样品3个质量比水平的加标回收率为72.5%~119%，RSD均低于9.6%。 |
| 英文摘要: |
| The target compounds in soil samples,including: nitenpyram, thiamethoxam, imidacloprid, acetamiprid and thiacloprid,were extracted by the mixed solution of acetonitrile and dichloromethane under ultrasonic operation, and then purified with a PEP on line SPE column. Analytes were determined by high performance liquid chromatography method. By optimizing the test conditions, good linear responses of five neonicotinoid residues were observed in the range of 0.01 mg/L~2.00 mg/L．Method detection limits of these five neonicotinoid pesticides in soil ranged from 0.002 mg/kg ~0.003 mg/kg. The recoveries were 72.5%~119%，while RSDs were all below 9.6%. |
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