RESUMO
Reliable monitoring of nitroimidazoles (NDZs) is of great significance to public health. Herein, an azo-linked porous organic polymer (Res-POPs) was prepared by green synthesis method using natural resveratrol as monomer for the first time. Using Res-POPs as sorbent, a facile method coupling solid-phase extraction with high performance liquid chromatography-diode array detection was developed for effective detecting NDZs. The method achieved good linearities (0.06 â¼ 100 ng mL-1 for water, 1.8 â¼ 200 ng g-1 for shrimp, and 1.5 â¼ 200 ng g-1 for Basa fish) with determination coefficients above 0.995, low detection limits (0.02 â¼ 0.05 ng mL-1, 0.60 â¼ 1.00 ng g-1 and 0.50 â¼ 0.90 ng g-1 for water, shrimp and Basa fish), high method recovery (85 %â¼114 %) and relative standard deviations below 8.2 %. The results demonstrated the superiority and the promising potential of the established method for detection of NDZs compared with the reported method.