稻田水土中烯啶虫胺残留分析方法研究

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稻田水土中烯啶虫胺残留分析方法研究(8600字)
摘要：本文研究建立了稻田水土中烯啶虫胺残留量的HPLC测定方法。稻田水、稻田土中烯啶虫胺分别采用二氯甲烷萃取和甲醇离心提取,提取液浓缩后用甲醇定容，高效液相色谱仪检测。结果表明：稻田水中烯啶虫胺的平均回收率为74.73%～81.22%，变异系数为1.87%～4.13%；稻田土中烯啶虫胺平均回收率为75.12%～77.61%，变异系数为1.37%～2.76%。该方法为环境样品中烯啶虫胺残留研究和环境安全性评价提供了检测手段。
关键词：烯啶虫胺；高效液相色谱法；稻田水；稻田土；农药残留检测方法

Study on Residue Analytical Method of Nitenpyram in the Paddy Water and Soil
Abstract: In this paper, using high performance liquid chromatography to study on residue analytical method of nitenpyram in the paddy water and soil. The study on digestion law of nitenpyram, which in turn to offer the basic experimental evidence on the environmental safety of nitenpyram . In paddy water and paddy soil, nitenpyram residues are extracted by dichloromethane and methanol centrifugating. After concentrating, extracting with a constant volume of methanol chromatography, determing by high performance liquid chromatography. The results showed that: the average recovery on paddy water of nitenpyram is 74.73% ~ 81.22%, coefficient of variation is 1.87% ~ 4.13%; the average recovery on paddy soil of nitenpyram is 75.12% ~ 77.61%, coefficient of variation was 1.37% ~ 2.76%.
Keyword: nitenpyram; HPLC; paddy water; paddy soil; pesticide residues