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This work is first report showed that supported TiO2 NPs on alumina could act catalytic activity on&#x0D;peroxyoxalate chemiluminescence system. In this work the catalytic effect of supported Titanium&#x0D;dioxide nanoparticles (TiO2 NPs) on the trichloroperoxy oxalate – hydrogen peroxide (PO-CL)&#x0D;reaction is investigated. Supported TiO2 nanoparticles exhibited the better CL catalysis activity than&#x0D;SnO and Carbon nanotubes. Supported TiO2 nanoparticles catalyze the chemiluminescence&#x0D;reaction between TCPO (bis-(2,4,6-trichlorophenyl) oxalate) and H2O2 and produce a strong CL&#x0D;signal in the presence of triazinyl dye derivative as fluorophore. The CL signal intensity was linear&#x0D;with the hydrogen peroxide concentration in the range of 5 to 1000 nmol ml-1 with a detection limit of&#x0D;1.2 nmol ml-1 and regression coefficient was 0.992 (n=4). The relative standard deviations for&#x0D;measurement of 300 and 500 nmol ml-1 hydrogen peroxide were 2.2 and 3.4%, respectively(n=4).&#x0D;Hydrogen peroxide concentration in river water was 8.7 nmol ml-1 with RSD=5.4%(n=3).

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Determination of Hydrogen Peroxide in Abas abad River Water Based on Catalytice effect of TiO2 Nano Particle on Peroxy Oxalate Chemiluminescenc of Triaznyl Dye Derivative