National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 8
... calculation does not take into account the other elements present in the proposed standards ; how- ever , it appeared desirable to add the powerful carbide stabilizers , tellurium and bismuth , to ensure heavy chilling and also to ...
... calculation does not take into account the other elements present in the proposed standards ; how- ever , it appeared desirable to add the powerful carbide stabilizers , tellurium and bismuth , to ensure heavy chilling and also to ...
Page 13
... calculated recoveries for the elements agreed well . Table 4 illustrates the recoveries obtained for 10 of the 20 elements added . For vanadium , the high average recovery value possibly was due to The authors express their appreciation ...
... calculated recoveries for the elements agreed well . Table 4 illustrates the recoveries obtained for 10 of the 20 elements added . For vanadium , the high average recovery value possibly was due to The authors express their appreciation ...
Page 19
... calculated standard deviation by the square root of the number of values on which the average is based . Providing that the analytical method of testing provides high precision , such as shown for the " within plate " testing for ...
... calculated standard deviation by the square root of the number of values on which the average is based . Providing that the analytical method of testing provides high precision , such as shown for the " within plate " testing for ...
Page 18
... calculated standard deviation by the square root of the number of values on which the average is based . In general , differences among positions exceeding the test level values are statistically significant at the 5 percent level ...
... calculated standard deviation by the square root of the number of values on which the average is based . In general , differences among positions exceeding the test level values are statistically significant at the 5 percent level ...
Page 30
... calculate . However , when the effect is not large and when relatively limited concentration ranges are involved , a linear correction normally is sufficient . It will be of interest to compare the analytical curves of the same elements ...
... calculate . However , when the effect is not large and when relatively limited concentration ranges are involved , a linear correction normally is sufficient . It will be of interest to compare the analytical curves of the same elements ...
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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