首页|A new optical sensor for detection of sulfamethoxazole antibiotics based on cobalt (II) complex with 2-protonated aminopyridinium thin films
A new optical sensor for detection of sulfamethoxazole antibiotics based on cobalt (II) complex with 2-protonated aminopyridinium thin films
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NSTL
Elsevier
The fast, simple, sensitive, and selective detection of sulfamethoxazole would be essential for water quality monitoring. Herein, we report a novel development of an optical sensor based on an organic/inorganic hybrid molecule (2-HAMP)(2)[CoBr4]. The physico-chemical properties were characterized using Fourier-transform infrared (FTIR), and Raman spectroscopies. The complex formation ability of (2-HAMP)(2)[CoBr4] toward sulfamethoxazole was investigated by UV-vis absorption. The complex stoichiometry was shown as 1:1. A glass plate was modified with a (2HAMP)(2)[CoBr4] hybrid compound and was characterized by scanning electron microscopy (SEM). The proposed optical sensor exhibits a linear response to sulfamethoxazole ranging from 10(-8) M to 10(-5) M, with a detection limit of about 8.6 10(-9) M and a response time of 130 s. In addition, the optode film shows good selectivity toward sulfamethoxazole with an RSD of 4.6%. Therefore, the as-proposed optode film shows excellent reproducibility, stability, sensitivity, selectivity, and a low time of response and limit of detection, which bodes well for its application in the process of water safety control.
NSTL
Elsevier
