Premium
Voltammetric Determination of 4‐Nitrophenol Using a Novel Type of Silver Amalgam Paste Electrode
Author(s) -
Niaz Abdul,
Fischer Jan,
Barek Jiří,
Yosypchuk Bogdan,
Bhanger Muhammad Iqbal
Publication year - 2009
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.200904622
Subject(s) - amalgam (chemistry) , electrode , detection limit , differential pulse voltammetry , materials science , mercury (programming language) , pipette , chemistry , buffer solution , analytical chemistry (journal) , electrochemistry , chromatography , cyclic voltammetry , computer science , programming language
A differential pulse voltammetric (DPV) method was developed for the determination of 4‐nitrophenol (4‐NP) at a newly developed silver amalgam paste electrode (AgA‐PE) in Britton–Robinson buffer pH 3.0. The electrode is based on a disposable plastic pipette tip filled with paste amalgam based on a mixture of mercury and fine silver powder (9 : 1, w/w). The experimental parameters, such as pH of Britton–Robinson buffer and activation and regeneration potential of the electrode surface were optimized. The reduction peak current dependences were linear for the concentration of 4‐NP from 0.2 to 100 μM. The method showed reproducible results with RSD ( n =45) of 1.7%. The limit of determination ( LOD ) was 0.3 μM. The method was successfully applied for the direct determination of 4‐NP in drinking water.