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Dual Biosensing Device for the Speciation of Arsenic
Author(s) -
del Tornode Román Lorena,
AlonsoLomillo M. Asunción,
DomínguezRenedo Olga,
ArcosMartínez M. Julia
Publication year - 2015
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.201400486
Subject(s) - arsenic , chemistry , electrode , biosensor , tap water , carbon fibers , detection limit , inorganic chemistry , electrolyte , materials science , chromatography , organic chemistry , biochemistry , composite number , composite material , environmental engineering , engineering
Acetylcholinesterase (ACh) and acid phosphatase (AcP) have been simultaneously cross‐linked onto an array of SPCEs, which was set up by a Ag/AgCl reference electrode, a carbon counter electrode and two carbon working electrodes. The detection of As(III) and As(V) is based on their enzymatic inhibitory effect. Different immobilization conditions, substrates, supporting electrolytes and chronoamperometric experimental conditions have been studied for the sensitive and selective detection of both species of arsenic in complex matrices, such as tap water and wine, at once.