Wipe sampling is a means of monitoring exposures to contaminants which has been used extensively for assessment of lead (Pb) in housedust in the U.S. This thesis reports the first baseline wipe dataset for urban Canadian homes, for Pb and other metal(loid)s including: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), and antimony (Sb). The literature review covers sampling methods, health effects, and sources. The digestion procedure ASTM 1644 is the accepted HNO3 hotplate protocol for determination of Pb in wipes. However in this study, HF was added to enhance extraction efficiencies for a wide range of elements. The first paper identifies baseline and elevated subpopulations for Cd and Pb using normality plots, and investigates the use of yttrium(Y) as a soil tracer. The second paper investigates application of the wipe methodology for monitoring As, Cr, Cu, Ni, Sb, and Zn. This is the first multi-element wipe sampling dataset in the literature, and will assist risk assessors and risk managers in providing guidance to Canadians about ways to reduce exposures to metals.
| Identifer | oai:union.ndltd.org:uottawa.ca/oai:ruor.uottawa.ca:10393/28588 |
| Date | January 2010 |
| Creators | McDonald, Lauren |
| Publisher | University of Ottawa (Canada) |
| Source Sets | Université d’Ottawa |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 106 p. |
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