Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10317
Title: Ultrasound-Enhanced Anodic Stripping Voltammetry Using Perfluorosulfonated Ionomer-Coated Mercury Thin-Film Electrodes
Authors: Matysik, Frank-Michael 
Matysik, Silke 
Brett, Ana Maria Oliveira 
Brett, Christopher M. A. 
Issue Date: 15-Apr-1997
Publisher: American Chemical Society
Citation: Analytical Chemistry. 69:8 (1997) 1651-1656
Abstract: The high mass transport caused by ultrasonic radiation in the preconcentration of trace metal species in anodic stripping voltammetry (ASV), leads to an order of magnitude enhancement in sensitivity. A Nafion-coated mercury thin-film working electrode is placed in a specially designed small-volume sonovoltammetric cell. The preparation and curing procedure for the Nafion film on a glassy carbon electrode substrate as well as ultrasound-enhanced mercury deposition through the Nafion film are optimized. The resulting electrode assembly is stable under ultrasonic irradiation. Optical microscopy observations show the formation of closely spaced mercury droplets of micrometer dimensions under the Nafion film. The performance characteristics of ultrasound-enhanced ASV at the Nafion-coated mercury thin-film electrode are studied in detail. The detection limit obtained for lead and cadmium test species is 3 × 10-11 M (30 s preconcentration in the presence of ultrasound). A relative standard deviation of 1.2% is obtained for repetitive determinations of 10 nM Cd2+ (n = 9).
URI: http://hdl.handle.net/10316/10317
ISSN: 0003-2700
DOI: 10.1021/ac960815j
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
Ultrasound-Enhanced Anodic Stripping.pdf243.19 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

88
checked on Nov 7, 2019

WEB OF SCIENCETM
Citations

85
checked on Nov 7, 2019

Page view(s)

235
checked on Dec 3, 2019

Download(s)

72
checked on Dec 3, 2019

Google ScholarTM

Check

Altmetric

Dimensions


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.