Fluorometric enhancement of the detection of H₂O₂ using different organic substrates and a peroxidase-mimicking polyoxometalate.

ABSTRACT: Simple, sensitive and stable fluorometric sensors based on the polyoxotungstate intrinsic peroxidase (Na₁₀[α-SiW₉O₃₄]) induced fluorescent enhancement of benzoic acid (BA), thiamine (TH) and 3-(4-hydroxyphenyl)propionic acid (HPPA) for the detection of hydrogen peroxide (H₂O₂) are developed for the first time. In three assays, the three non-fluorescent substrates BA, TH and HPPA were oxidized with the ·OH radicals decomposed from H₂O₂ under the catalysis of Na₁₀[α-SiW₉O₃₄] under basic pH conditions. The optimal conditions for the detection of H₂O₂ were evaluated and possible mechanisms are also discussed. The fluorescence intensity increases were linearly rela

SUBMITTER: Tian R 

PROVIDER: S-EPMC9063527 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature