Immunoassay Development for the Class-Specific Assay for Types I and II Pyrethroid Insecticides in Water Samples

文献类型： 外文期刊

第一作者： Zhang, Qi

作者： Zhang, Qi;Zhang, Wen;Wang, Xiuping;Li, Peiwu

作者机构：

关键词： hapten;class-specific antibody;sensitivity;immunoassay;pyrethoid insecticides

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN： 1420-3049

年卷期： 2010 年 15 卷 1 期

页码：

收录情况： SCI

摘要： Five generic haptens of pyrethoid insecticides, which were classified as three types, were designed and synthesized: the first (hapten 1) is for type I pyrethroids without a cyano group, the second (hapten 2 and XQ) for type II pyrethroids with a cyano group, and the third (hapten 4 and 5) for both types of pyrethroids with loss of the ester group. The hapten structures were confirmed by MS and (1)H-NMR. Hapten 1 and 2 were conjugated with BSA respectively and haptens 1-5 were conjugated with OVA. Four polyclonal antisera were raised against BSA conjugates including a mixture conjugate, and twenty antibody/coating conjugate combinations were selected for studies of assay sensitivity and specificity for pyrethroids. The study revealed the best combination, which showed equal high sensitivities (I(50) is around 0.02 mu g mL(-1)) to both types of pyrethroids. The immunity results suggest that, with a mixture conjugates, a polyclonal antibody against a group of insecticides can be prepared for multi-residue assays.

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