000 02817cam  2200361za 4500
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008170811s1972    oncd    ob   f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aM34-20/150E-PDF|zM34-20/150
1001 |aGuest, R. J.
24514|aThe use of flame procedures for the analysis of minerals, ores, and electric furnace slags. |nPart II, |pDetermination of silicon in sulphide and silicate minerals and their mixtures |h[electronic resource] / |cR.J. Guest and D.R. Macpherson, Extraction Metallurgy Division.
260 |aOttawa : |bInformation Canada, |c1972.
300 |aiv, 32 p. : |bchart
4901 |aTechnical bulletin ; |vTB 150
500 |aCover title.
500 |a"September 1972."
500 |aDigitized edition from print [produced by Natural Resources Canada].
504 |aIncludes bibliographical references.
520 |a“This report, the second in a series of three, describes methods for the determination of silicon in typical sulphide and silicate minerals by atomic absorption spectrophotometry, using either hydrofluoric acid attack under pressure in a Teflon bomb or sodium peroxide fusion with subsequent controlled acidification. Both decomposition methods give silicon solutions which have excellent long-term stability and which are also suitable for the determination of other elements in the sample. The effects of various common contaminants carried through the whole procedure are described, and though in general satisfactory results are obtainable using pure silicon solutions as comparison standards, it is shown that the addition of an equivalent amount of the major contaminant present in the sample can give a significant gain in accuracy. The method is applicable to synthetic solutions and to specimen-grade minerals, separately and in mixtures, that represent most Canadian ores. Many types of sample materials, covering a range of silicon content from 0.1 to 45%, can be analysed with a considerable saving in time over gravimetric procedures. The average coefficient of variation found was 1.4%. Much of the deviation (of some 5%) from the gravimetric results can be attributed to the inaccuracies of that method"--Summary, p. i.
546 |aIncludes summary in French.
69207|2gccst|aMinerals
69207|2gccst|aMetals
69207|2gccst|aAnalysis
7001 |aMacpherson, D. R.
7101 |aCanada. |bNatural Resources Canada.
7101 |aCanada. |bMines Branch.
830#0|aTechnical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch)|vTB 150|w(CaOODSP)9.834857
85640|qPDF|s1.42 MB|uhttps://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-150-eng.pdf