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Title:The Development of Coulostatic Charge Injection Techniques for High Performance Liquid Chromatography Analysis (Electrochemistry, Detection, Amperometry, Hplc)
Author(s):Barnes, Anthony Charles
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Chemistry, Analytical
Abstract:The use of coulostatic charge injection techniques for the detection of electroactive species separated using high performance liquid chromatography is examined. The techniques examined include the single pulse technique in which the slope of the potential decay is correlated to concentration and the coulostatic pulse amperometric technique in which coulostatic pulses are used to mimic controlled potential amperometry. The single pulse technique gives detection limits of 2 x 10('-10) moles Pb(II) at a mercury electrode. Coulostatic pulse amperometry methods were used to quantitate 4 x 10('-11) moles of caffeic acid at a carbon paste electrode.
The coulostatic pulse amperometric technique was also used to scan potential during analyte elution. Qualitative information (E(, 1/2) values) was gathered for both aminophenols and chlorophenols separated under reverse phase HPLC conditions. The half wave potentials were found to correspond closely to the values found using voltammetry in a still solution.
Issue Date:1984
Description:261 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1984.
Other Identifier(s):(UMI)AAI8409745
Date Available in IDEALS:2014-12-15
Date Deposited:1984

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