A novel double metal-dithizone functionalized polyurethane electrospun nanofiber and film for colorimetric determination of hexavalent chromium.

ABSTRACT: This work proposes a highly specific method of Cr⁶⁺ determination based on the double reactions of two metals, Co²⁺ with dithizone to form a (DTZ)-Co²⁺ complex, and the replacement of Co²⁺ in the formed complex with Cr⁶⁺. The fast degradation of DTZ in solution in wet analysis was overcome by preparing dithizone functionalized polyurethane nanofibers that were electrospun into a membrane (DTZ/PU-NF) and a microwell plate film (DTZ/PU-MPF). For comparison, the performance of diphenylcarbazide (DPC), a currently used complexing agent for Cr⁶⁺, was also investigated. Colour changes were detected as red-green-blue values. The DTZ/PU-NF was smooth, with an average diameter of 384.09 nm and no bead appeared. A dense network struct

SUBMITTER: Dewi IR 

PROVIDER: S-EPMC9846713 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature