00000nam 2200000za 4500 9.866947 CaOODSP 20241203113645 cr ||||||||||| 190110s1986 oncd ot f000 0 eng d CaOODSP eng eng fre n-cn-on En13-5/86-75E-PDF Nriagu, Jerome O., 1942- What fraction of the total metal flux into lakes is retained in the sediments? [electronic resource] / by Jerome 0. Nriagu and Henry K.T. Wong. Burlington, Ont. : National Water Research Institute, [1986] 11 p. : charts NWRI contribution ; no. 86-75 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references : p. 5. "The concentrations of, and deposition rates for, the pollutant metals (Pb, Cu, Zn, Ni, and Cd) and the rare earth elements are reported for the sediments and settling particulatesin a large, remote lake (Lake Opeongo) in the Algonquin Provincial Park, Ontario. Using a mass conservation model based on the rare earth elements, it is estimated that only 40-60% of pollutant metals getting into the lake is retained by the sediments. The low retention rate may explain the widely reported intra-basin and intra-lake differences in metal contents of sediments and casts some doubt on the use of pollutant metal profiles in retrospective assessment of the human contribution to the metal flux into many lake basins"--Abstract, p. 1. Text in English, abstracts in English and French. gccst Water management gccst Water quality gccst Sediments Wong, Henry K. T. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-75. (CaOODSP)9.844121 PDF 929 KB https://publications.gc.ca/collections/collection_2019/eccc/En13-5-86-75-eng.pdf