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Title
Utilizing ofAg@AgCl@grapheneoxide@Fe3O4 nanocomposite asa magnetic plasmonicnanophotocatalystinlight-initiatedH2O2 gen- erationandchemiluminescencedetectionofnitrite
Type of Research Article
Keywords
Nitrite Magnetic nanocomposite Plasmonic nanophotocatalyst Light-initiated H2O2 generation Chemiluminescence
Abstract
A simpleandsensitivechemiluminescence(CL)procedurewasdevelopedforthequantification ofnitrite in aqueoussolutions.Themethodisbasedonlight-initiatedgenerationofH2O2 by amagnetic Ag@AgCl@Graphene oxidenanocompositeanditssubsequentredoxreactionwithnitriteioninacidic medium. Duringthecarbonate-catalyzeddecompositionofproducedperoxynitriteandenergytrans- ferring touranine,aCLemissionwasobservedat λ¼534 nm.SeveralfactorsaffectingtheCLintensity wereinvestigatedandoptimized.Underoptimumconditions,theCLintensitywasdirectlyproportional to thenitriteconcentrationintherangeof5‒200ngmL1. Thelimitofdetectionandrelativestandard deviation (for n¼5; atanitriteconcentrationof70ngmL‾1) were1.15ngmL1 and 2.57%,respectively. The methodwassuccessfullyappliedtodeterminenitriteinfoodstuffswithrecoveriesintherangeof 95.0–103.0%forthespikedsamples.Theaccuracyofthemethodwasevaluatedbycomparingtheresults with thoseobtainedbyanalyzingthesamplesusingastandardmethod.
Researchers Hossein Abdolmohammad-Zadeh (First Researcher)، Elaheh Rahimpour (Second Researcher)