A real-time immuno-PCR assay for the detection of tetrabromobisphenol A

Analytical Methods Pub Date: 2014-08-19 DOI: 10.1039/C4AY01343C

Abstract

In this study, a reliable and ultra-sensitive indirect competitive real-time immuno-PCR (rt-iPCR) was established for the determination of tetrabromobisphenol A (TBBPA). The optimal hapten, artificial immunogen, coating antigen, and polyclonal anti-TBBPA antibodies were successfully prepared. For optimizing rt-iPCR, several physiochemical factors, such as optimal coupling concentration of immunogen and antibody, and the amounts of streptavidin and biotinylated DNA, are discussed. Using this proposed rt-iPCR assay, TBBPA could be determined in the range from 10 pg L?1 to 10 ng L?1, with a detection limit of 2 pg L?1. This rt-iPCR was selective, with low cross-reactivity with TBBPA analogs. Finally, seabed sediment samples were analyzed by rt-iPCR and liquid chromatography. The tested results were demonstrated to be receivable and accurate. The average recovery was between 89.8% and 113.6%. We think this developed rt-iPCR will be very useful in the field of environmental science.

Graphical abstract: A real-time immuno-PCR assay for the detection of tetrabromobisphenol A
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