00000nam 2200000za 4500 9.846068 CaOODSP 20250703153618 cr ||||||||||| 171025s1986 onca|||fo f000 0 eng d CaOODSP eng eng fre n-cn-ns En13-5/86-147E-PDF Bourbonniere, Richard A. Acidic nature of dissolved organic matter in coloured natural waters [electronic resource] / Richard A. Bourbonniere. Burlington, Ont. : National Water Research Institute, Environment Canada, 1986. iv, 11 p. : ill. NWRI contribution ; 86-147 "November 1986". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Dissolved organic matter (DOM) is an important constituent in coloured waters from southwestern Nova Scotia. An improvement in our understanding of the distribution and chemical character of DOM in these waters is necessary if we are to learn how it affects water quality. Acidic fractions of DOM are responsible for the natural acidity of these waters, and the contribution of natural acids to the total acidity of these waters is a major concern ofthe LRTAP program. Complexation by DOM fractions is a possible mechanism for protecting local fish populations from the toxic effects of aluminum and other metals. To effectively address these concerns, the spatial and seasonal variations in the distribution of organic acids, their acid content, and acid strengths must be known. This preliminary report presents initial results from a continuing study. It shows that acidic fractions make up about half of the DOM at sites in Kejimkujik National Park, NS and in Barrington Township, NS. Variations in type of orqenic acid are found to occur when samples are grouped by location and season"--Management perspective, p. i. Introductory text in English and French. gccst Water quality gccst Pollutants Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-147 (CaOODSP)9.844121 PDF 1.13 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-86-147-eng.pdf