Chemical News and Journal of Physical Science, Tom 83Chemical news office., 1901 |
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Strona 19
... PLATINUM GROUP . By M. LEIDIÉ . THE THE methods at present in use for the extraction of pla . tinum and iridium leave residues of which the analysis is of great interest , as they are the sole source of a certain number of the rare ...
... PLATINUM GROUP . By M. LEIDIÉ . THE THE methods at present in use for the extraction of pla . tinum and iridium leave residues of which the analysis is of great interest , as they are the sole source of a certain number of the rare ...
Strona 111
... platinum serves to prevent the glass from collapsing as it softens , whereby distortion of the boat would result , and its withdrawal for further examination of its contents would be impossible . Gooch's Apparatus . - Of more elaborate ...
... platinum serves to prevent the glass from collapsing as it softens , whereby distortion of the boat would result , and its withdrawal for further examination of its contents would be impossible . Gooch's Apparatus . - Of more elaborate ...
Strona 112
... platinum crucible , kept permanently filled with sodium - potassium carbonate . 16 C.M. A II C.M. 16 C.M. Do FIG . 6. - TUBE FOR WATER DETERMINATION ACCORDING TO PENFIELD . A , Outer protecting covering of platinum foil . A second ...
... platinum crucible , kept permanently filled with sodium - potassium carbonate . 16 C.M. A II C.M. 16 C.M. Do FIG . 6. - TUBE FOR WATER DETERMINATION ACCORDING TO PENFIELD . A , Outer protecting covering of platinum foil . A second ...
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acetic acid action alcohol alkaline aluminium ammonia ammonium amount analysis Apparatus aqueous arsenic atomic weight barium boiling bromide calcium CARBOLIC ACID carbon cent Chem Chemist Chemistry chloride colour compounds containing copper Creed Lane crucible Cryst crystallises crystals decomposed decomposition derivatives determined dextrose dilute dissolved distilled estimation ether ethyl ethyl butyrate evaporated excess experiments filtered filtrate flask gives glass glyoxylic acid HATTON GARDEN heated hydrate hydriodic acid hydrochloric acid hydrogen hydrolysis insoluble iodide iodine iron Laboratory lead liquid London Ludgate Hill MANUFACTURERS matter MEDAL melting metallic method mineral mixture neutralised nitrate nitric acid nitrogen obtained oxalate oxide oxidised oxygen pans peroxide phosphorus platinum potash potassium powder precipitate prepared present Prof pure quantity reaction reduced residue rock salt samples selenium separation silica silver soda sodium soluble solution Street substance sulphate sulphide sulphocyanide sulphuric acid temperature tion tube volume zinc