Interpretation and use of standard atomic weights (IUPAC Technical Report)
| Autor: | David Brynn Hibbert, Adriaan M. H. van der Veen, Juris Meija, Antonio Possolo |
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| Rok vydání: | 2021 |
| Předmět: |
010405 organic chemistry
business.industry Chemistry General Chemical Engineering Chemical nomenclature relative atomic mass molecular weight uncertainty propagation General Chemistry 010402 general chemistry computer.software_genre 01 natural sciences atomic-weight intervals 0104 chemical sciences Interpretation (model theory) relative molecular mass Technical report Artificial intelligence atomic weights uncertainty business standard atomic weight computer Natural language processing |
| Zdroj: | Pure and Applied Chemistry. 93:629-646 |
| ISSN: | 1365-3075 0033-4545 |
| DOI: | 10.1515/pac-2017-1002 |
| Popis: | Many calculations for science or trade require the evaluation and propagation of measurement uncertainty. Although relative atomic masses (standard atomic weights) of elements in normal terrestrial materials and chemicals are widely used in science, the uncertainties associated with these values are not well understood. In this technical report, guidelines for the use of standard atomic weights are given. This use involves the derivation of a value and a standard uncertainty from a standard atomic weight, which is explained in accordance with the requirements of the Guide to the Expression of Uncertainty in Measurement. Both the use of standard atomic weights with the law of propagation of uncertainty and the Monte Carlo method are described. Furthermore, methods are provided for calculating uncertainties of relative molecular masses of substances and their mixtures. Methods are also outlined to compute material-specific atomic weights whose associated uncertainty may be smaller than the uncertainty associated with the standard atomic weights. |
| Databáze: | OpenAIRE |
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