Construction of an optical sensor for copper determination in environmental, food, and biological samples based on the covalently immobilized 2-(2-benzothiazolylazo)-3-hydroxyphenol in agarose

Abstract

An optical chemical sensor has been developed for the quantitative spectrophotometric analysis of copper.

The highly selective green colorimetric detection of yttrium ions in biological and environmental samples using the synergistic effect in an optical sensor

“…In contrast to traditional detection methods, 39,40 optical chemical sensors have garnered substantial attention from researchers due to their specificity, precision, affordability, instantaneous response, and simplicity. 41–49 As a result, there is an urgent need to develop an optical sensor that is facile to fabricate and adept at identifying Y 3+ . To our knowledge, this study marks the inaugural documentation of a highly sensitive colorimetric method for detecting and quantifying Y 3+ using an optical sensor.…”