| 单词 | qualitative analysis |
| 释义 | > as lemmasqualitative analysis qualitative analysis n. [after German qualitative Analyse (1826 or earlier in this sense)] Chemistry identification of the constituents (as elements, ions, functional groups, etc.) present in a substance; cf. quantitative analysis n. 1. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > types of chemical analysis quantitative analysis1825 qualitative analysis1831 quant1896 microanalysis1912 autoanalysis1961 1831 J. Griffin tr. H. Rose Man. Analytic Chem. i. 1 Qualitative analysis. 1842 E. A. Parnell Elements Chem. Anal. (1845) 2 An examination..which does not develope more than the nature or quality of the constituents, is termed a qualitative analysis. 1873 Proc. Royal Soc. 22 431 A qualitative analysis of the water showed lime, magnesia, and sulphuric acid to be present. 1956 Siggia & Stolten Introd. Mod. Org. Anal. iii. 51 In the classical scheme of organic qualitative analysis, the derivatives prepared were characterized by their melting points. 1987 M. H. Freemantle Chem. in Action (BNC) 236 It [sc. chromatography] is used in both quantitative and qualitative analysis to identify separated components of a mixture. < as lemmas |
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