摘要
本文对苹果汁中45种有机磷类农药的提取、净化技术和气相色谱质谱检测条件进行了研究。以苹果汁为基质材料,45种有机磷类农药在1、5、10μg/L三个水平上对苹果汁进行添加回收率实验。结果表明:45种有机磷类目标物在优化条件下的回收率为71.16%~117.94%,相对标准偏差1.20%~15.13%(n=5),方法检出限为0.01~0.22μg/L。45种有机磷类农药能够实现很好的分离,线性范围在10~2000μg/L,线性相关系数大于0.984。本方法操作简单,结果准确,由于几乎不使用有机溶剂也减少了分析过程对环境和人体的危害。
This article focused on the technique using GC- MS to determine the presence and concentrations of 45 kinds of organophosphorous pesticides in cider.45 pesticides were tested with the recovery experiment of cider at three levels： 1,5, 10 μg/L The resuhs showed that the 45 pesticides gave satisfactory recoveries ranging from 71.16%o to 117.94% with the RSDs from 1.20% to 15.13% （ n =5） ,the limitation of this method was between 0.01 μg/L and 0.22 μg/L.45 pesticides were well separated and the linear relationship was good enough which the correlation coefficients were greater than 0.984 for concentrations from 10 to 2000 μg/L for most pesticides. Compared with conventional techniques, it was more accurate, love- cost, highly efficient and environmental friendly. Furthermore, for the limited use of organic solution, it has little harm to environment and human＇ s health for the limited use of organic solution during the analysis process.
出处
《食品工业科技》
CAS
CSCD
北大核心
2017年第23期225-231,共7页
Science and Technology of Food Industry
关键词
浊点萃取
反萃取
气相色谱质谱法
有机磷类农药
cloud point extraction
back- extraction
gas chromatography- mass spectrometer
organophosphorus pesticides
