Abstract
This study reported that a hapten of imidacloprid, 1-[(6-Carboxylethylthio-3- pyridinyl)methyl)- N-nitro-imidazolidinimine was synthesized using technical material of imidacloprid to react with 3-mercaptopropionic acid in hot alkaline solution. The hapten was conjugated to bovine serum albumin (BSA) and ovalbumin (OVA) to form the immuno-antigens and the coating antigen, respectively. The antibody with high titer (2.56 × 10 4) was obtained after immuning rabbits. The results showed that the antibody had a high affinity to imidacloprid tested by enzyme-linked immunosorbent assay (ELISA), which IC 50 and IC 20 were 20.7 and 1.1 μg L −1; and the cross reactibilities to those compounds related with imidacloprid were less than 1.4%.
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