000 02223cam  2200337za 4500
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008170816s1974    oncd    ob   f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aM34-20/195E-PDF|zM34-20/195
1001 |aDonaldson, Elsie M.
24510|aDetermination of tin in ores, steel and alloys with gallein after extraction as the iodide |h[electronic resource] / |cElsie M. Donaldson, Mineral Sciences Division.
260 |aOttawa : |bInformation Canada, |c1974.
300 |aiv, 22 p. : |bcharts
4901 |aTechnical bulletin ; |vTB 195
500 |aCover title.
500 |a"July 1974."
500 |aDigitized edition from print [produced by Natural Resources Canada].
504 |aIncludes bibliographical references.
5203 |a“A method for determining up to about 3.5% of tin in ores and mill products is described. After sample decomposition, tin is separated from the matrix elements by toluene extraction of tin(IV) iodide from a 2M sulphuric acid - 1.5M potassium iodide-tartaric acid medium, then back-extracted into 2% sodium hydroxide solution. The red complex formed between tin(IV) and gallein is extracted into n-amyl alcohol from a monochloroacetic acid-ascorbic acid medium, and the absorbance of the extract is determined at 496 nm. Arsenic, antimony, germanium, and thallium are partly extracted as iodides under the proposed conditions, but large amounts of arsenic and moderate amounts of antimony, germanium, and thallium may be present in the sample solution without causing error in the results. The proposed method is also applicable to steel and copper-, aluminum-, zinc-, and zirconium-base alloys"--Abstract, p. i.
546 |aIncludes abstract in French.
69207|2gccst|aMetals
69207|2gccst|aAnalysis
7101 |aCanada. |bNatural Resources Canada.
7101 |aCanada. |bMines Branch.
830#0|aTechnical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch)|vTB 195|w(CaOODSP)9.834857
85640|qPDF|s1.15 MB|uhttps://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-195-eng.pdf