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THE DETERMINATION OF NICKEL IN NICKEL ORES
1900
Journal of the American Chemical Society
advantage of leaving the iron, lime, and alumina insoluble at the start and only a small quantity of alkali is introduced into the analysis. A s for the mineral constituents they are better determined on a separate portion. Their accurate determination is made all the more difficult by the presence of an excessive amount of alkali metals as in Peckham's method. Our practice has been to heat the asphalt at a low temperature in a platinum dish, s l o~l y driving off the volatile constituents in
doi:10.1021/ja02040a008
fatcat:63hytzag7jd3zbyc3rhbqhijxu