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New Determination Scheme of p ‐Aminophenol by MnO 2 Modified Electrode Coupled with Flow Injection Analysis
Author(s) -
Lin MengShan,
Jan BorIuan,
Chen PeiYen,
Cheng WenChuan,
Chen ChiHao
Publication year - 2010
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/elan.200900584
Subject(s) - flow injection analysis , detection limit , electrode , linear range , chemistry , analytical chemistry (journal) , flow (mathematics) , limit (mathematics) , standard addition , range (aeronautics) , chromatography , materials science , mathematics , physics , mathematical analysis , mechanics , composite material
New determination scheme of p ‐aminophenol by using MnO 2 as a preoxidant is demonstrated in this work. In the flow injection system, the p ‐aminophenol is oxidized to quinoneimine by MnO 2 at up‐stream, which can be detected at a suitable reductive potential. After optimization, the linear range of PAP is started from 1 μM to 30 μM ( R 2 =0.999), the estimated detection limit ( S / N =3) is 0.28 μM. Two real samples are studied and excellent recoveries are achieved by using standard addition method.