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柑橘及土壤中高效氯氟氰菊酯残留分析方法研究
作者: 杨玉霞1  莫仁甫1  王天顺2  周其峰1  
单位: (1广西农业科学院植物保护研究所;2 中国农业科学院甘蔗研究中心/广西农业科学院甘蔗研究所:南宁 530007)  
关键词: 高效氯氟氰菊酯  柑橘  土壤  残留检测  气相色谱  
分类号:S481.8
出版年,卷(期):页码:2012 ,43 ( 1 ): 页码:38-41
摘要:

【Objective】The goal of this experiment was to develop a rapid method for detecting lambda-cyhalothrin residues in citrus fruits and soil. 【Method】The samples were extracted with methanol, cleaned up and concentrated on a florisil column, and analyzed by GC using μ-ECD. 【Result】The linear relationship of lambda-cyhalothrin was found better in the concentration range from 0.005 to 1.000 μg/mL with the linear correlation coefficient of 0.9996. Minimum limit of detection in standard samples was recorded as 1.0×10-12 g in the present method, the lowest detectable concentration in citrus peel, pulp, and soil samples was 0.001 mg/kg. The average recovery varied from 91.24 to 104.61%, and the relative standard deviation ranged from 2.73 to 10.45%. 【Conclusion】Owing to its good isolation effect, high recovery rate, rapidness, accuracy and high sensitivity, the GC method using μECD is immensely applicable to detect the lambda-cyhalothrin residues in citrus fruits and soil.

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