Title: Nitrite sensor based on multilayer film of Dawson-type tungstophosphate α-K-7[H4PW18O62].18H(2)O immobilized on glassy carbon
Authors: Ammam, Malika ×
Keita, Bineta
Nadjo, Louis
Fransaer, Jan #
Issue Date: Mar-2010
Publisher: Elsevier science bv
Series Title: Talanta vol:80 issue:5 pages:2132-2140
Abstract: A nitrite sensor based on immobilized Dawson-type tungstophosphate alpha-K-7[H4PW18O62] 18H(2)O (PW18) in multilayers of charged polyelectrolyte poly(allylamine hydrochloride) (PAH) on a glassy carbon electrode is described. A nitrite sensor manufactured with 10 layers has a sensitivity of similar to 4 nA/mu M nitrite, fast response time (<6 s), low detection limit (similar to 0.1 mu M), high selectivity towards endogenous interferences such as nitrate and molecular oxygen, a linear range from 0 1 mu M to at least 20 mM nitrite and was stable for at least 2 months In addition, such nitrite sensors can operate in a pH range from 1 to 9, and the sensitivity can be Increased by increasing the number of layers at the expense of increasing the response time (C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0039-9140
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Chemical and Extractive Metallurgy Section (-)
Department of Materials Engineering - miscellaneous
× corresponding author
# (joint) last author

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