Zobrazeno 1 - 10
of 20
pro vyhledávání: '"J. W. Gramlich"'
Publikováno v:
J Res Natl Bur Stand (1977)
The accepted atomic weight of thallium has remained at a value of 204.37 ± 0.03 since 1962. At this level of uncertainty, however, the atomic weight becomes a limiting factor to high accuracy analysis. The new mass spectrometric determination of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f7d51f3f6cedb2bef11ecbb3367fa9d
https://pubmed.ncbi.nlm.nih.gov/34566009
https://pubmed.ncbi.nlm.nih.gov/34566009
Publikováno v:
J Res Natl Bur Stand (1977)
The atomic weight of a reference sample of silver has been determined by mass speetrometry, with an uncertainty of one part in 10(6), using a single filament silica gel procedure. Accurately known quantities of chemically pure (107)Ag and (l09)Ag wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3e64f0b265c5db73ba5db6ee3aa9c7f
https://pubmed.ncbi.nlm.nih.gov/34566068
https://pubmed.ncbi.nlm.nih.gov/34566068
Autor:
Richard S Davis, T. J. Murphy, Vincent E. Bower, Paul J. Paulsen, L. J. Powell, J. W. Gramlich
Publikováno v:
J Res Natl Bur Stand (1977)
A report of the Faraday constant as detennined at NBS via silver coulometry and atomic weight measurements is presented. The uncertainty of the reported result represents a five-fold improvement over measurements made at NBS 20 years ago. The result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0de032b452ad0f833be8e5be18bb00f0
https://pubmed.ncbi.nlm.nih.gov/34566069
https://pubmed.ncbi.nlm.nih.gov/34566069
Publikováno v:
Accreditation and Quality Assurance. 3:447-458
The aim of the International Measurement Evaluation Programme (IMEP) is to give an objective picture of state-of-the-practice analytical measurements by comparing them to a reference value obtained by a primary method of measurement. The referenceval
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7fe05909f509797fe4b100517034ff4
https://doi.org/10.1007/s007690050284
https://doi.org/10.1007/s007690050284
Autor:
T. G. Dzubay, R. L. Walter, R. D. Willis, J. W. Gramlich, L. J. Moore, A. R. Stiles, E. L. Garner, R. M. Baum, L. A. Machlan
Publikováno v:
Advances in X-ray Analysis. 19:473-486
The purpose of this work was to develop accurate calibration standards which were fully characterized in terms of uniformity and concentration using fundamental measuring methods. Three similar sets of vacuum deposits were commercially made, each set
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::542e3a69c3bf1411a98ddba60933ce27
https://doi.org/10.1154/s0376030800008028
https://doi.org/10.1154/s0376030800008028
Publikováno v:
Contributions to Mineralogy and Petrology. 74:175-188
New lead isotope data are presented for some late Precambrian and early Paleozoic vein and massive sulfide deposits in the Arabian Shield. Using the Stacey Kramers (1975) model for lead isotope evolution, isochron model ages range between 720 m.y. an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2f6a693f3e2d6590b39fec42ff79b01
https://doi.org/10.1007/bf01132003
https://doi.org/10.1007/bf01132003
Publikováno v:
GEOCHEMICAL JOURNAL. 14:269-277
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8c89d96e8aef4d881382b7673022923
https://doi.org/10.2343/geochemj.14.269
https://doi.org/10.2343/geochemj.14.269
Publikováno v:
Clinical Chemistry. 28:1309-1313
Thermal-ionization isotope-dilution mass spectrometry is a highly precise and accurate method for the determination of potassium concentrations in serum. Although not suited for routine use because of the time and expense required, the technique prov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6db1e011a139a767397787b1b526fe9
https://doi.org/10.1093/clinchem/28.6.1309
https://doi.org/10.1093/clinchem/28.6.1309
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
Absolute values have been obtained for the isotopic abundance ratios of a reference sample of nickel (Standard Reference Material 986), using thermal ionization mass spectrometry. Samples of known isotopic composition, prepared from nearly isotopical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9e98298b5efacabdb346a7c408c8a91
http://europepmc.org/articles/PMC4948969
http://europepmc.org/articles/PMC4948969
Autor:
T. J. Murphy, I. L. Barnes, Paul J. Paulsen, J. W. Gramlich, W. R. Shields, John R. Moody, L. J. Moore
Publikováno v:
Analytical Chemistry. 45:2384-2387
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ce8214dcf4772d04e612101aa0165bd
https://doi.org/10.1021/ac60336a014
https://doi.org/10.1021/ac60336a014