00000nam 2200000za 4500 9.848591 CaOODSP 20241203113640 cr ||||||||||| 171212s1984 onca|||fob|||f000 0 eng d CaOODSP eng eng fre n-cn--- En13-5/85-112E-PDF Cheam, V. Preservation of physical parameters and major ions in waters [electronic resource] / by V. Cheam, A.S.Y. Chau, K.K. Kwan. [Burlington, Ont.] . : Analytical Methods Division, Quality Assurance and Methods Section, National Water Research Institute, Canada Centre for Inland Waters, 1984. 101 p. : ill. NWRI contribution ; 85-112 "December 1984". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references: p. 15-19. "The centralization of the Water Quality Branch (WQB) laboratories involves longer time periods between sample collection and sample analysis. It was therefore essential that the sample preservation techniques currently in use be thoroughly evaluated and modified where required, if the data generated by the consolidated laboratory are to be reliable. This report describes the results of the first phase of the preservation studies. It deals with a total of 16 physical and inorganic parameters, Sixteen regional, spiked and synthetic waterswere investigated over a four-month period. It was found that most parameters investigated are stable when stored in plastic containers in the dark at 4°C."--Abstract. Includes abstract and executive summary in French. gccst Water quality gccst Testing Chau, A. S. Y. (Alfred Shun-Yuen), 1941- Kwan, K. K. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 85-112 (CaOODSP)9.844121 PDF 6.10 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-85-112-eng.pdf