00000nam 2200000zi 4500 9.878935 CaOODSP 20241203113652 m o d f cr bn||||||||| 190905t19751975onc ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn--- En36-508/34E-PDF En36-508/34 McGirr, D. J., author. Interlaboratory quality control study no. 9 : copper, cadmium, aluminium, stontium and mercury / D.J. McGirr and R.W. Wales. Burlington, Ontario : Inland Waters Directorate, Canada Centre for Inland Waters, 1975. ©1975 1 online resource (v, 15 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier Report series ; no. 34 Some pages blank and unnumbered in original print edition and omitted in this copy. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 4). "Twenty-six laboratories participated in a quality control study on the determination of copper, cadmium, aluminum, strontium and mercury in water. Copper and cadmium are determined frequently by most participants in this study, and results for these two metals were satisfactory as for a previous study using standard atomic absorption techniques. Precision for aluminum was fair, with a non-zero blank reading, likely picked up from the glassware. Most participants determine aluminum rarely; some had switched methods recently. Satisfactory results for strontium were obtained by seven laboratories using atomic absorption and by five laboratories using flame emission spectroscopy. The automated method used by the Water Quality Branch (WQB) demonstrated greatly improved precision and accuracy for mercury compared to a previous study, whereas the variety of manual methods used produced many outliers"--Abstract, page v. Issued also in print format. Includes abstracts in English and French. Trace elements in water Analysis. Water quality. Oligoéléments dans l'eau Analyse. Eau Qualité. Canada. Environment Canada. Canada. Inland Waters Directorate. Report series (Canada. Inland Waters Directorate) no. 34. (CaOODSP)9.862410 PDF 573 KB https://publications.gc.ca/collections/collection_2019/eccc/en36-508/En36-508-34-eng.pdf