The Use of the Blowpipe in the Qualitative and Quantitative Examination of Minerals, Ores, Furnace Products, and Other Metallic CombinationsJ. Churchill, 1854 - 405 páginas |
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Página 12
... quantity of air sent through the Blowpipe is consumed . In the free flame , the warmest part forms a girdle round the whole , the heat being most intense at f . Where the heat is greatest , substances which are not acted upon by an ...
... quantity of air sent through the Blowpipe is consumed . In the free flame , the warmest part forms a girdle round the whole , the heat being most intense at f . Where the heat is greatest , substances which are not acted upon by an ...
Página 51
... quantity of sulphate of soda be present , the resulting bead will be of a deep yellow or red color , owing to the formation of sulphide of sodium . A second method is , to heat a small quantity of carbonate of soda upon charcoal , in ...
... quantity of sulphate of soda be present , the resulting bead will be of a deep yellow or red color , owing to the formation of sulphide of sodium . A second method is , to heat a small quantity of carbonate of soda upon charcoal , in ...
Página 53
... quantity of oil of vitriol , equal to one - fourth of the weight of the borax , immediately added . The sulphuric acid unites with the soda , and forms sulphate of soda , which remains in solution ; while the boracic acid , on cooling ...
... quantity of oil of vitriol , equal to one - fourth of the weight of the borax , immediately added . The sulphuric acid unites with the soda , and forms sulphate of soda , which remains in solution ; while the boracic acid , on cooling ...
Página 55
... quantity of carbonate of soda or potassa ; dissolve the fused compound in water ; add to the solution a quantity of hydrochloric acid , and evaporate to dryness . A fine gritty powder remains , which , being well affused with boiling ...
... quantity of carbonate of soda or potassa ; dissolve the fused compound in water ; add to the solution a quantity of hydrochloric acid , and evaporate to dryness . A fine gritty powder remains , which , being well affused with boiling ...
Página 56
... quantity of gold or silver is present . 14. PROOF LEAD . Pb . It is employed either in a finely - divided state , or else in small fragments ; but it must be entirely free from traces of gold , silver , or copper , as it is used in the ...
... quantity of gold or silver is present . 14. PROOF LEAD . Pb . It is employed either in a finely - divided state , or else in small fragments ; but it must be entirely free from traces of gold , silver , or copper , as it is used in the ...
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Outras edições - Ver tudo
The Use of the Blowpipe in the Qualitative and Quantitative Examination of ... Carl Friedrich Plattner Visualização integral - 1854 |
The Use of the Blowpipe in the Qualitative and Quantitative Examination of ... Carl Plattner Pré-visualização indisponível - 2017 |
The Use of the Blowpipe in the Qualitative and Quantitative Examination of ... Carl Friedrich Plattner Pré-visualização indisponível - 2016 |
Palavras e frases frequentes
100 milligrammes Al² 0³ alkali alloy alumina ammonia antimony arsenic arsenic acid assay baryta bead becomes bismuth bisulphate of potassa Blowpipe blue boracic acid borax carbonate of soda cerium cetera charcoal clear glass cobalt color colorless combination compound cooling copper cupellation decigramme detected dissolved employed evaporated examination exempli gratia filtered fluxes forceps formed fused fusible fusion gold green heated hydrochloric acid inch ingredients insoluble lime magnesia manganese mass melted metallic oxides microcosmic salt Mineral Kingdom mixed nickel nitrate nitric acid obtained opaque operator oxidating flame oxide of iron oxide of lead particles perfectly phosphate platinum foil platinum wire portion powder precipitate present protoxide of iron pulverized pure readily reagent reducing flame residue roasted separated sesquioxide sesquioxide of iron silicic acid silver small quantity smelting soluble solution strontia sublimate sulphate sulphuric acid Tellurium tinge titanic acid treated volatile workable lead yellow yttria zinc
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