00000nam 2200000za 4500 9.841187 CaOODSP 20221107152027 cr ||||||||||| 170808s1966 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/77E-PDF M34-20/77 Donaldson, Elsie M. Determination of silicon by measurement of the absorbance of the n-amyl alcohol extract of α-silicomolybdic acid (application to high-purity copper and brasses) [electronic resource] / Elsie M. Donaldson and W.R. Inman, Mineral Sciences Division. Ottawa : Queen's Printer, 1966. iii, 17 p. : charts Technical bulletin ; TB 77 Cover title. "September 1965." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. “A procedure involving n-amyl alcohol extraction of α-silicomolybdic acid and spectrophotometric measurement of the extract (at 350 mμ) has been applied to the determination of trace amounts of silicon in high-purity copper metal and brasses. Interference from phosphorus and arsenic is eliminated by the selective destruction of their heteropoly complexes in a 3N sulphuric acid medium prior to the extraction of the silicon complex"--Abstract, p. i. Includes abstract in French. gccst Metals Inman, W. R. Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 77 (CaOODSP)9.834857 PDF 1.87 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-77-eng.pdf 299964