Highly sensitive colorimetric detection of Cd(ii) based on silica sol modified with dithizone and cationic surfactant.

ABSTRACT: The cadmium ion (Cd²⁺) is highly poisonous and nondegradable and easily bioaccumulates through the food chain. Therefore, it is crucial to develop cost-effective chemical sensors for Cd²⁺ with fast response time, high selectivity, and very low detection limits. In this study, a colorimetric sensor for the determination of Cd²⁺ was fabricated by modifying silica sol with dodecyltrimethylammonium bromide (DTAB) and dithizone (DZ). Cd²⁺ formed a complex with DZ, changing the solution color immediately from purple to orange prior to detection using ultraviolet-visible spectrophotometry and a customized Cd analyzer for the precipitate. Under the optimum conditions, the developed Cd²⁺ sensor had a linear range of 0.01-0.25 mg L^-1,

SUBMITTER: Litluechai A 

PROVIDER: S-EPMC11466134 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature