Date of Award

12-2003

Degree Name

Master of Science

Department

Chemistry

First Advisor

Dr. Marc Perkovic

Second Advisor

Dr. Brian Buffin

Third Advisor

Dr. Subra Muralidharan

Access Setting

Masters Thesis-Open Access

Abstract

This Masters Thesis compared two glow discharge-optical emission spectrometers designed around two different types of detectors: the photomultiplier tube (PMT) and the charge-coupled device (CCD). The two instruments compared were the LECO SA2000 (PMT-based) and the LECO GDS500a (CCD-based). Detection limit, dynamic range, precision, accuracy, and drift were determined to compare the detection systems between 165 and 450nm.

The PMT-based system outperformed the CCD-based system in all five of the categories studied based on the initial protocol. However, it was shown that improvements could be made in four of the five categories studied by exploiting the CCDs ability to monitor the entire wavelength region simultaneously. This ability to collect additional information offers the opportunity to improve and refine the analytical process, which is one of the main reasons why many researchers and scientists have started to exploit the CCD for use as a detector in many venues including glow discharge-optical emission spectroscopy.

Included in

Chemistry Commons

Share

COinS