Plattner's Manual of Qualitative and Quantitative Analysis with the BlowpipeD. Van Nostrand, 1880 - 548 páginas |
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Plattner's Manual of Qualitative and Quantitative Analysis with the Blowpipe ... Carl Friedrich Plattner Sin vista previa disponible - 2015 |
Términos y frases comunes
alkaline alloy alumina ammonia amount antimony arsenides arsenous acid assay bead becomes bismuth bisulphate of potassa blowpipe blowpipe characteristics blue flame boracic acid borax borax-glass carbonate chloride clear glass closed tube coal in R. F. coat cobalt colorless colors the flame combined compounds cooling copper cupel Dana decomposed detected dissolved easily filter fluorine fluxes forceps formed fused fusible fusion globule gold green heated hydrochloric acid ignited infusible lime lithia magnesia manganese mass matrass metallic oxides metallurgical products milligr millim minerals nickel nitre nitric acid odor opaque open tube oxide oxide of antimony oxide of copper phosphoric acid platinum wire powder precipitate present protoxide pulverized reaction reduced residue roasted salt selenium separated sesquioxide sesquioxide of iron Si³ silicates slag soda solution sublimate substance contains sulphate sulphuric acid test lead titanic acid treated trifling vide volatile weighed yellow yields water zinc
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Página ii - TREATMENT OF THE FIRST PORTION. — Dissolve a very small quantity in borax on platinum wire in the OF, and observe the color produced. Various colors will be formed by the combination of the oxides. Saturate the bead, and shake it off into the porcelain dish. Repeat this once or twice. a. Treat these beads on Ch. with a small piece of lead, silver or gold, in a strong RF b.
Página ii - Remove the button from the bead while hot, or by breaking the latter when cold on the anvil between paper, carefully preserving all the fragments. d. If Co is present, the bead will be blue. If a large amount of Fe is present, add a little borax to prove the presence or absence of Co by diluting the bead, the cobalt color being more intense.
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Página ii - If the bead spreads out on the Ch., it must be collected to a globule by continued blowing. Make a borax bead on platinum wire and dissolve in it some of the fragments of the bead, reserving the rest for accidents.