00000nam 2200000za 4500 9.866994 CaOODSP 20241203113645 cr ||||||||||| 190111s1986 oncd ot f000 0 eng d CaOODSP eng eng fre n-cn--- En13-5/86-85E-PDF Cheam, V. National interlaboratory quality control study, no. 33 [electronic resource] : sulphate in coloured waters / by V. Cheam and A.S.Y. Chau. Burlington, Ont. : National Water Research Institute, Canada Centre for Inland Waters, [1986] [45] p. : charts NWRI contribution ; no. 86-85 “January 1986." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "This report describes an interlaboratory comparison study for the analysis of S04 in organic contaminated coloured waters. Some 70 Canadian laboratories participated in the analysis of five unpreserved water samples. Because of the interference from coloured matter in the waters, some methodologies, in particular the Methyl Thymol Blue colorimetry, were identified as producing results which were biased high. Some other methodologies performed well, particularly ion chromatography"--Abstract. Text in English, abstracts in English and French. gccst Water management gccst Water quality Chau, A. S. Y. (Alfred Shun-Yuen), 1941- Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 86-85. (CaOODSP)9.844121 PDF 2.01 MB https://publications.gc.ca/collections/collection_2019/eccc/En13-5-86-85-eng.pdf