Date of Award

1-1-2020

Language

English

Document Type

Master's Thesis

Degree Name

Master of Science (MS)

College/School/Department

Department of Chemistry

Content Description

1 online resource (viii, 30 pages) : color illustrations.

Dissertation/Thesis Chair

Gerd-Uwe Flechsig

Committee Members

Gerd-Uwe Flechsig, Paul Toscano

Keywords

Anodic Stripping Voltammetry (ASV), Differential Pulse Voltammetry (DPV), Hot-wire Electrochemistry, Screen-Printed Gold Loop Electrode (GLE), Trace Metal analysis, Underpotential Deposition (UPD), Electrochemistry, Water, Drinking water, Sedimentation and deposition, Copper, Gold

Subject Categories

Analytical Chemistry

Abstract

To study the underpotential deposition (UPD) of copper, three different types of water samples (TraceSelect® Ultra-pure water, Indian pond water at University at Albany and tap water) are used at a heated gold loop screen-printed electrode (GLE), which is a new type of heated working electrode for voltammetry measurements that is able to directly detect the copper content in the water samples. The anodic stripping analysis of copper is performed with these gold loop electrodes at room temperature of 25 °C and electrode temperature of 80 °C at two different deposition potentials, -0.20 V and +0.10 V. Furthermore, the concentration analysis of copper in water samples is performed with stripping voltammetry by standard addition of Cu(II). To enhance the accuracy of the measurements, an UV sample pretreatment is used to eliminate the interference of organic materials that can occur at both potentials. A difference in the behavior of the peak current was observed in three trials at a more positive potential than at a more negative potential during stripping analysis of Indian pond water without UV treatment.

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