纳米四氧化三铁模拟酶催化光度法

测定食品中痕量双氧水

Abstract

Abstract: Fe3O4 nanoparticles has catalytic mimic enzyme function of peroxide，which catalyze H2O2 to produce the hydroxyl radicals that could rapidly oxidize methyl orange and make it fade in HCl-NaAc at pH of 1.42.Accordingly，a novel method for determination of trace hydrogen peroxide by hydrogen peroxide-methyl orange-Fe3O4 nanoparticles mimic enzyme ca- talyzed reaction system was established.The influences of buffer solution，dosage of nano-sized particles of Fe3O4，reaction temperature，and reaction time were discussed and optimum conditions were confirmed.Under the optimized conditions，the linear range of determination was at 1.17~35.2 μmol/L and the detection limit was 0.6 μmol/L.The method has been applied to determine H2O2 in foodstuff with satisfactory results.

Key words: hydrogen peroxide, Fe3O4 nanoparticles, catalytic spectrophotometric method, methyl orange

CLC Number:

TQ138.11
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TQ138.11

LIU Xi-Xiang, 欧Yang-Hui-Xiang , XIE Yu-Qi, LING Shao-Ming, LAN Cui-Ling. Mimic enzyme catalytic spectrophotometric determination of trace hydrogen peroxide in foodstuff with Fe3O4 nanoparticles[J]. INORGANICCHEMICALSINDUSTRY, 2014, 46(5): 66-.

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Inorganic Acid-Base-Salt Committee of CIESC

Mimic enzyme catalytic spectrophotometric determination of trace hydrogen peroxide in foodstuff with Fe3O4 nanoparticles

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