Rapidly Scanning Coulostatic Liquid Chromatography/electrochemistry Combined With Conventional Amperometric Detection in a Series Dual-Electrode Cell

The technique of rapidly scanning coulostatic pulse amperometry is combined with conventional fixed-potential amperometry in a series dual-electrode cell to create a novel detector for high performance liquid chromatography. After a preliminary period of electrode evaluation, a flow cell was designed and constructed to permit compatible operation of a coulostat and a potentiostat as they simultaneously controlled electrode potentials. A circuit for minimizing crosstalk effects was implemented. Existing coulostat software was extensively revised to add the capability to scan in either direction through a range of potentials which included 0.00 V. Reliable achievement of new potentials and precise holding of existing potentials were also greatly improved.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Trubey, Richard Keith

• Chemistry, Analytical

Identifier

(UMI)AAI8610988

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70321