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Semicontinuous Monitoring of Cadmium and Lead with a Screen‐Printed Sensor Modified by a Membrane
Author(s) -
Betelu Stéphanie,
Parat Corinne,
Petrucciani Nathalie,
Castetbon Alain,
Authier Laurent,
PotinGautier Martine
Publication year - 2007
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.200603722
Subject(s) - cadmium , tap water , oxygen sensor , membrane , heavy metals , chemistry , environmental chemistry , analytical chemistry (journal) , materials science , chemical engineering , environmental science , oxygen , environmental engineering , metallurgy , engineering , biochemistry , organic chemistry
The analytical performances of the developed sensor were evaluated in laboratory for the semicontinuous monitoring of Cd and Pb in water samples at μg L −1 level. The effects of oxygen, pH, and stirring on the voltammetric response of these metals were investigated. The O 2 removal did not allow to improve the peak current. In return, stirring appeared indispensable to avoid the impoverishment of metals in the diffusion layer. The necessity to control the pH and the solution evolution in laboratory experiments was also clearly established. The semicontinuous monitoring of Cd and Pb was then performed for 42 h in tap water and demonstrated that sensor is a promised tool for semicontinuous environmental analyses.