A luminescent sensor based on a Cd2+ complex for the detection of nitrofuran antibiotics in aqueous solution

Abstract

This complex has a specific recognition for nitrofuran antibiotics, and is a fluorescent sensor with high sensitivity, high selectivity, recovery and good anti-interference ability. This work will expand the application of MOCs in chemical sensing and inspire other researchers to explore this direction. • Improvement and research of complex. • The complex as a fluorescent sensor has the ability to specifically recognize nitrofuran antibiotics. • The complex has low detection limit and high sensitivity for nitrofuran antibiotics. • The complex as a fluorescent sensor has high selectivity, fast response, anti-interference ability, cycle ability and so on. The abuse of antibiotics is harmful to human body and environment, so the detection and identification of antibiotics in water has become a hot issue. In this experiment, cadmium metal-organic complexes (MOCs) with high selectivity, stability and low detection limit is used to detect nitrofuran antibiotics in aqueous solution. The detection limits of Furazolidone (FZD), Nitrofurazone (NFZ) are 0.066 μM and 0.051 μM, respectively. The sensing mechanism of Cd 2+ complex is systematically analyzed and the results showed that the complex exhibited high sensitivity, strong stability and circulation ability to nitrofuran antibiotics because of energy competitive absorption and electron transfer.