The Application of Nafion Metal Catalyst Free Carbon Nanotube Modified Gold Electrode: Voltammetric Zinc Detection in Serum.
Metal catalyst free carbon nanotube (MCFCNT) whiskers were first used as an electrode modification material on a gold electrode surface for zinc voltammetric measurements. A composite film of Nafion and MCFCNT whiskers was applied to a gold electrode surface to form a mechanically stable sensor. The sensor was then used for zinc detection in both acetate buffer solution and extracted bovine serum solution. A limit of detection of 53 nM was achieved for a 120 s deposition time. The zinc in bovine serum was extracted via a double extraction procedure using dithizone in chloroform as a zinc chelating ligand. The modified electrode was found to be both reliable and sensitive for zinc measurements in both matrices.
Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221-0172, USA.
Wei
W
Yue
Department of Chemistry, Xavier University, Cincinnati, OH, 45207, USA.
Adam
A
Bange
SCNTE LTD P.O. Box 38, Alpha, OH 45301, USA.
Bill L
BL
Riehl
SCNTE LTD P.O. Box 38, Alpha, OH 45301, USA.
Jay M
JM
Johnson
BiomicroSystems Labs, School of Electronic and Computing Systems, University of Cincinnati, Cincinnati, OH, 45221-0030, USA.
Ian
I
Papautsky
Department of Chemistry, University of Cincinnati, Cincinnati, OH, 45221-0172, USA.
William R
WR
Heineman
Anodic stripping voltammetry; Bovine serum; Dithizone; Metal catalyst free carbon nanotubes; Nafion; Zinc