Hydroxyl and carboxyl group functionalized conjugated microporous nanomaterial as adsorbent for the solid-phase extraction of phenolic endocrine disrupting chemicals from freshwater fish samples

Abstract

Endocrine disruption chemicals (EDCs) in food can seriously harm human health. In this study, a hydroxyl and carboxyl group functionalized conjugated microporous nanomaterial (CMP) was prepared by Friedel-Crafts reaction and used as solid-phase extraction (SPE) adsorbent. A functionalized CMP based SPE combined with high performance liquid chromatography-diode array detection was built for the determination of phenolic EDCs from nine fish samples. The extraction conditions were optimized by both single factor and response surface methodology (Box-Behnken Design). The established method performed well in terms of the response linearity (in the range of 0.50–100 ng g−1 with coefficient of determination larger than 0.9942), limits of detection (0.15–0.30 ng g−1, S/N of 3), limits of quantification (0.50–1.00 ng g−1, S/N = 10), method recoveries (78.4–121 %) and repeatability (relative standard deviation < 11 %). It can be used as an efficient method to detect trace phenolic EDCs in real fish samples.