Fluvial suspended aggregates and contaminant association / S.S. Rao, I.G. Droppo and E. Ongley. : En13-5/90-93E-PDF

"The relationship between suspended particles and contaminant transport has long been recognized. The significance of suspended flocs or aggregates to contaminant transport is, however, not clearly understood. In this study, suspended aggregates from the Sixteen-Mile Creek in Ontario and the Yamaska River in Quebec are used to understand and evaluate the significance of flocculated nmterial to total suspended solids load, contaminant adsorption and transport process. Samples from the Sixteen-Mile Creek and the Yamaska River were sized by digitization and laser particle sizer analysis respectively. Yamaska River samples were also fractionated using a modified cascade filtration technique for bacteriological analysis and for determination of the nature of contaminant interactions with different aggregate size ranges. Suspended aggregates represent a significant proportion of the total suspended solid volume, and contain a large population of bacteria. This work indicates that a relationship may exist between contaminant binding, aggregate size and bacterial density"--Abstract.

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publications.gc.ca/pub?id=9.876926&sl=1

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