摘要
本实验建立了一种农残测定的气相色谱-质谱联用法(GC-MS),实现了对杏鲍菇中16种有机氯农药的快速定量定性检测。试样以乙酸乙酯为溶剂,经乙腈均质提取,采用气相色谱-质谱仪进行分析。16种农药的检出限为0.65~19.34g/kg,平均回收率为93.8%~108.9%,相对标准偏差RSD为0.5%~4.7%,符合国家检测标准。该方法操作简单、结果准确、灵敏度高,可适用于多种蔬菜中有机氯农药残留的定量检测。
In our work, 16 kinds of organochlorine pesticides in Pleurotus Eryngii were determined by GC-MS. Ethyl acetate was used as solvent in the experiment, and the sample of pleurotus eryngtu was extracted with acetonitrile. The limits of detection for 16 organochlorine pesticides were in the range of 0.65~19.34g/kg, and the average recoveries were in the range of 93.8%~108.9%. Meanwhile, the relative standard deviations (RSD) were obtained from 0.5% to 4.7%. The results showed that this method has simple operation, good sensitivity, reproducibility and high efficiency, which could be applied to the quantitative determination for pesticide residue in vegetables.
出处
《中国果菜》
2014年第10期59-62,共4页
China Fruit & Vegetable
关键词
杏鲍菇
有机氯农药
气相色谱-质谱法
Pleurotus eryngii
organochiorine pesticide
gas chromatography-mass spectrography
