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Palladium Biosensor
Author(s) -
Adam Vojtech,
Hanustiak Pavel,
Krizkova Sona,
Beklova Miroslava,
Zehnalek Josef,
Trnkova Libuse,
Horna Ales,
Sures Bernd,
Kizek Rene
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.200703953
Subject(s) - biosensor , palladium , chemistry , detection limit , differential pulse voltammetry , chloride , supporting electrolyte , chromatography , inorganic chemistry , electrolyte , electrode , cyclic voltammetry , electrochemistry , biochemistry , organic chemistry , catalysis
In this paper we proposed a palladium(II) biosensor. The biosensor is based on determining of interactions between palladium(II) and metallothionein modified hanging mercury drop electrode by means of differential pulse voltammetry. We studied influence of two supporting electrolytes (potassium or sodium chloride) on the signals of the biosensor. Based on the results obtained we found potassium chloride (0.05 M) as the most suitable supporting electrolyte to determine palladium(II). The detection limit of the biosensor for palladium ions was evaluated as 100 nM with RSD about 10%. Moreover, we utilized the biosensor for measurement of the target molecule in the presence of human blood serum and human urine.