00000nam 2200000za 4500 9.862329 CaOODSP 20221107161005 cr ||||||||||| 180925s1988 oncabd ob f000 0 eng d 0662160789 (print) CaOODSP eng eng fre nl----- En36-517/157E-PDF En36-503/157E A large-sample extractor for determining organic contaminants in the Great Lakes [electronic resource] / M.A. Neilson ... [et al.]. Burlington, Ont. : Inland Waters Directorate, Ontario Region, Water Quality Branch, 1988. vii, 23 p. : charts, ill., maps. Technical bulletin ; no. 157 Issued also in French under title: Extracteur à grand volume pour le dosage des contaminants organiques dans les Grands Lacs. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 12). "The construction and operation of two large-sample extractors onboard the CSS Limnos are described. They were used to extract water samples of approximately 50-L volume with dichloromethane during the monitoring cruises on lakes Erie, Huron, Ontario and Superior in early 1986. Both whole water and clarified water were extracted. The dichloromethane extracts were later analyzed for organochlorines, chlorobenzenes, polychlorinated biphenyls, and polynuclear aromatics by the National Water Quality Laboratory in Burlington, Ontario. A solution containing surrogate standards was continuously added at a fixed rate to the water being extracted. The recoveries of these surrogates provide a continuous measure of the extraction efficiency and reproducibility of the analytical process, and confirm that the processes used are valid"--Abstract, p. v. Includes abstract in French. Water pollution Great Lakes (North America) Measurement Neilson, Melanie A. Canada. Inland Waters Directorate. Ontario Region. Water Quality Branch. Canada. Environment and Climate Change Canada. Extracteur à grand volume pour le dosage des contaminants organiques dans les Grands Lacs (CaOODSP)9.862331 Technical bulletin (Canada. Inland Waters Directorate) no. 157. (CaOODSP)9.861569 PDF 871 KB https://publications.gc.ca/collections/collection_2018/eccc/En36-517-157-eng.pdf