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Determination of Hydrogen Peroxide in Rainwater by Using a Polyaniline Film and Platinum Particles Co‐Modified Carbon Fiber Microelectrode
Author(s) -
Wang Yu,
Huang Junhua,
Zhang Chunguang,
Wei Jingbao,
Zhou Xingyao
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199809)10:11<776::aid-elan776>3.0.co;2-5
Subject(s) - polyaniline , platinum , microelectrode , electrode , detection limit , hydrogen peroxide , materials science , electrochemistry , ascorbic acid , selectivity , linear range , analytical chemistry (journal) , chemistry , chromatography , composite material , polymer , organic chemistry , catalysis , food science , polymerization
Four types of carbon fiber microelctrodes modified with polyaniline (PAn) and platinum particles (Pt) were fabricated to determine H 2 O 2 at + 0.60 V (vs. SCE). The sensitivity, stability and selectivity of different electrodes were compared. The electrode modified with a sandwich film of PAn‐Pt‐PAn offered the best result. The linear range was 4.0 × 10 −7 –2.4 × 10 −4 M with a detection limit of 1.0 × 10 −7 M. The relative standard deviation (RSD) for 10 μM H 2 O 2 was 1.9 % ( n =7). The electrode was used to determine the H 2 O 2 in the rainwater.