National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 11
... sulfuric - phosphoric - nitric acid medium are oxidized to permanganate by ammonium per- sulfate in the presence of silver ions . The permanganic acid is titrated with standard sodium arsenite solution . Interferences Elements ...
... sulfuric - phosphoric - nitric acid medium are oxidized to permanganate by ammonium per- sulfate in the presence of silver ions . The permanganic acid is titrated with standard sodium arsenite solution . Interferences Elements ...
Page 27
... sulfuric or perchloric acid , and final purification of the residue by volatilizing the silica with hydrofluoric acid [ 2,3,5,8 ] . In this method , the use of perchloric acid as the dehydrating acid has the advantage that most ...
... sulfuric or perchloric acid , and final purification of the residue by volatilizing the silica with hydrofluoric acid [ 2,3,5,8 ] . In this method , the use of perchloric acid as the dehydrating acid has the advantage that most ...
Page 46
... sulfuric or formic acid solution , conversion to the oxide , and weighing . The precipitation of zinc with diammonium phosphate followed by ignition to the pyrophosphate is a good method but has the drawbacks that the solution must be ...
... sulfuric or formic acid solution , conversion to the oxide , and weighing . The precipitation of zinc with diammonium phosphate followed by ignition to the pyrophosphate is a good method but has the drawbacks that the solution must be ...
Page 47
... sulfuric acid before the precipitation of zinc sulfide . Apparatus Muffle furnace . Reagents ( a ) Ammonium hydroxide ( 1 : 1 ) . One volume of NH4OH ( sp gr 0.9 ) diluted with an equal volume of water . ( b ) Sulfuric acid ( 1 N ) ...
... sulfuric acid before the precipitation of zinc sulfide . Apparatus Muffle furnace . Reagents ( a ) Ammonium hydroxide ( 1 : 1 ) . One volume of NH4OH ( sp gr 0.9 ) diluted with an equal volume of water . ( b ) Sulfuric acid ( 1 N ) ...
Page 52
... sulfuric or dilute perchloric acid solutions causes such elements as chromium , iron , copper , nickel , zinc , silver , tin , and bismuth to deposit in the mercury cathode . iron , titanium , and vanadium are extracted as cupferrates ...
... sulfuric or dilute perchloric acid solutions causes such elements as chromium , iron , copper , nickel , zinc , silver , tin , and bismuth to deposit in the mercury cathode . iron , titanium , and vanadium are extracted as cupferrates ...
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acid solution add 10 ml aliquot alloy ammonium Analytical Analytical curve assay average beaker boil Bureau of Standards butyl acetate calibration carbon Cartridge Brass cents chemical shift chill-cast chromium composition Cool copper Copper-Base Spectrochemical Standards COPPER-BASE STANDARDS determination dilute Dissolve electrolyte electron probe electron probe microanalysis elements Erlenmeyer flask ferrite Figure filter free-cutting brass fumes glass grain heat homogeneity inclusions Institute for Materials Laboratory Low-Alloy Steel manganese Materials Research mean free path measurement metal method microns ml of H2SO4 ml of HNO3 ml of water Mossbauer National Bureau NBS Misc NBS Miscellaneous Publication NBS Spectrometric nickel nitric acid obtained oxide paper pearlite percent photometric precipitate procedure Publ Reagents sodium sodium nitroprusside spectrometer standard deviation Standard Reference Materials sulfate sulfuric acid Technology titration Transfer uranium Vacuum fusion values vanadium viscosity volumetric flask wash weight white cast iron x-ray zinc