摘要
建立了用于检测稻田水中双甲脒农药残留的液液萃取／气质联用方法。使用GC—MS选择离子监测模式检测，考察了不同的提取溶剂和pH对检测结果的影响。在优化条件下，双甲脒在20～2000ng／mL范围内具有良好的线性关系，相关系数为0．9991，平均回收率为86．7％，精密度（n=5）为5．3％，检出限为10ng／mL。该方法快速、灵敏、准确，可用于稻田水中双甲脒的定性定量分析检验。
A method for detecting amitraz pesticide residues in paddy field water by liquid phase extraction combining with GC-MS was established. The influences of solvent and pH value on extraction efficiencies were investigated. The analysis was performed by selected ion monitoring （SIM） mode. Under the optimal conditions, the calibration curve of amitraz was in the range of 20 - 2000ng/mL with a correlation coefficient of 0. 9991. The average recoveries were 86.7% with RSD of 5.3% . The detection limit was 10ng/mL. The results showed that the method is rapid, sensitive and accurate, and can be used to detect of amitraz in paddy field water.
出处
《化学通报》
CAS
CSCD
北大核心
2014年第1期90-92,共3页
Chemistry
关键词
液液萃取
气质联用仪
双甲脒
农药残留
稻田水
Liquid phase extraction, GC-MS, Amitraz, Pesticide residues, Paddy field water
