00000nam 2200000zi 4500 9.883286 CaOODSP 20241203113653 m o d f cr |n||||||||| 200103e197809##oncb ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En36-522/81-1978E-PDF Lawrence, J., author. National inventory of natural organic compounds : an interim report / J. Lawrence. [Burlington, Ontario] : Environment Canada, Canada Centre for Inland Waters = Environnement Canada, Centre canadien des eaux intérieures, September 1978. 1 online resource (16 pages) : map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Unpublished report Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 8). "A preliminary inventory of 27 rivers and lakes across Canada for natural organic compounds indicates that humic acid, fulvic acid, tannins and lignins account for the major part of soluble organics in surface waters (visually assessed by the brown colour of water). Fulvic acid usually occurs in larger quantities (x10) than humic acid. The chloroform potential (chlorination by-product previously reported on by Oliver and Lawrence) roughly follows the concentration of these two acids. Stable amino acids (proline, alanine and glycine) were found in high concentrations in areas of livestock farming. The amino acids form only a small part of Kjeldahl nitrogen and therefore it must be concluded that the bulk of the nitrogen comes from agricultural fertilizers. Relatively low concentrations of oil, grease and PCBS were recorded from the localities samples"--Executive Summary. Organic water pollutants Canada. Polluants organiques de l'eau Canada. Canada. Environment Canada. Canada Centre for Inland Waters. Unpublished report (Canada Centre for Inland Waters) (CaOODSP)9.881827 PDF 1,013 KB https://publications.gc.ca/collections/collection_2020/eccc/en36-522/En36-522-81-1978-eng.pdf