In response to the likely future change in the Canadian Guidelines regulating the maximum allowable concentration of trihalomethanes (THM) in potable water, an investigation into the possible causes and variability of THM precursors was conducted during the summers of 1990 and 1991 at Lake Memphremagog in south-eastern Quebec. A number of associated parameters were correlated with THM formation potential (THMFP) with respect to season, depth and position on the lake. The THMFP was quantified indirectly by measuring the THM concentration present after chlorination under standard conditions. / THM concentrations in the samples were found to exceed the US EPA standard of 100 $ mu$g/L, sometimes considerably. There did not appear to be any statistically significant contribution to THMFP from human activity. No close agreement was observed between THMFP and any of the associated parameters for the lake as a whole. A few correlations were found between THMFP and nutrient concentrations at individual sites.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.69592 |
| Date | January 1993 |
| Creators | Yang, Rachel |
| Contributors | Gehr, R. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Civil Engineering and Applied Mechanics.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001337288, proquestno: AAIMM87936, Theses scanned by UMI/ProQuest. |
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