Upper Great Lakes connecting channels interlaboratory QA/QC study - QM-1 : PCBs, OCs and CHs in ampules : final report / W. Horn, R. Szawiola and H.B. Lee.: En13-5/86-166E-PDF

"The Upper Great Lakes Connecting Channels (UGLCC) have been designated 'Areas of Concern' by the International Joint Commission. A Canada-U.S- binational study, involving the identification and assessment of the environmental impacts of toxic substances, in those areas, was initiated in 1984. In order to assist analytical laboratories contributing data to the UGLCC study, to generate reliable and accurate data, a Quality Management Work Group was formed and 13 interlaboratory studies were implemented. This report describes the results from the first interlaboratory performance evaluation study, QM-1, which consisted of the analysis of standard solutions of PCB, 12 organochlorine insecticides and 13 chlorinated hydrocarbons. Results were received from 9 out of 16 participating laboratories (5 Canadian, 4 U.S.). Overall, with the exception of one laboratory, most of the data received from the participants were satisfactory and comparable"--Management perspective.

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