00000nam 2200000zi 4500 9.867900 CaOODSP 20241203113645 m o d f cr nn||||||||| 190201s1987 oncab ob f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn-on n-us-mi En13-5/87-51E-PDF Mudroch, Alena, author. Distribution of mercury in Lake St. Clair and the St. Clair River sediments / A. Mudroch and K. Hill. Burlington, Ontario : Lakes Research Branch, National Water Research Institute, Canada Centre for Inland Waters, [1987] 1 online resource (13 pages, 21 unnumbered pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; no. 87-51 Cover title. "Division control no. 134." "This manuscript has been submitted as an Upper Great Lakes Connecting Channels Report and the contents are subject to change. This copy is to provide information prior to publication." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "The increase of mercury concentrations in surface sediments from Lake Huron to Lake St. Clair and Western Basin of Lake Erie was attributed to industrial mercury inputs in 1970's. This study was carried out to investigate the present distribution pattern of mercury in Lake St. Clair sediments, and the concentration and association of mercury in the sediments from the St. Clair River. The results of the study showed a decrease of mercury concentrations in the surficial sediment of Lake St. Clair from 1974, despite continuous input of mercury into the lake. The concentration of mercury was greater in the nearshore sediments of the St. Clair River at Sarnia than that in the Lake St. Clair sediments. The results indicated a different association of mercury in the sediments of the St. Clair River and Great Lakes depositional basins. This investigation was carried out under study no. ECD-236"--Executive summary. Includes executive summary, management perspective and abstract in French. gccst Mercury gccst Sediments gccst Lakes gccst Rivers Hill, K., author. Canada. Environment Canada. National Water Research Institute (Canada). Lakes Research Branch. NWRI contribution ; no. 87-51. (CaOODSP)9.844121 PDF 1.37 MB https://publications.gc.ca/collections/collection_2019/eccc/En13-5-87-51-eng.pdf