期刊
FOOD ANALYTICAL METHODS
卷 6, 期 1, 页码 274-281出版社
SPRINGER
DOI: 10.1007/s12161-012-9432-4
关键词
Molecular imprinting; Mixed template; Organophosphate pesticides; Solid-phase extraction; Gas chromatography
资金
- National Natural Science Foundation of China [31171699]
- Department of Science and Technology of Shandong Province, China [2009GG10009058]
- Postdoctoral Innovation Foundation of Shandong Province, China [200902012]
In this study, a molecularly imprinted polymer (MIP) was prepared using the mixture of trichlorfon and monocrotophos as the mixed template. The imprinted polymer was characterized and exhibited good recognition ability and fast adsorption-desorption dynamic toward the trichlorfon and monocrotophos. Using this imprinted polymer as sorbent, a new method of molecularly imprinted solid-phase extraction coupled to gas chromatography for the simultaneous determination of two organophosphate pesticides residues was developed. Under optimal condition, the linear range was 0.005-10.0 mg/l. At a loading flow rate of 2.0 ml/min for loading 100 ml, the detection limits were 0.28 mu g/l for trichlorfon and 0.090 mu g/l for monocrotophos, the peak area precision (RSD) for five replicates was 4.23-4.50 %. The blank rape samples spiked with two organophosphate pesticides at 0.05 and 0.1 mg/l levels were determined by this method with recoveries ranging from 89.41 % to 95.12 %. Moreover, this method was successfully applied to the quantitative detection of the trichlorfon and monocrotophos residues in leek samples.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据