Date of Award
Doctor of Philosophy in Chemistry
James L. Fasching
Separation and determination of arsenic species in sea water is an attractive area of current research primarily due to the effects the different oxidation states of the element have on its bioavailability and toxicity. Many separation procedures for the arsenic species in sea water prior to their determination by graphite furnace -, hydride generation - atomic absorption spectrophotometry or neutron activation technique have been reported.
Evaluation of three of these separation procedures based on (1) solvent extraction, (2) ion-exchange, and (3) thiol cotton is reported in this dissertation. The evaluation is based on the analytical parameters: Detection limits, Sensitivity, Reproducibility, Precision, Recovery, Accuracy, Cost and Time of analysis.
The separation procedure based on solvent extraction was found to be superior to the other two procedures for routine analysis of sea water samples.
Amankwah, Samuel Asare, "Comparison of Three Separation Tecnniques for Arsenic (III) and Arsenic (V) in Sea Water" (1986). Open Access Dissertations. Paper 679.