| 单词 | proximate analysis |
| 释义 | > as lemmasproximate analysis b. Chemistry. Designating or relating to the components of a substance which are identifiable or separable by an initial or relatively crude procedure. Frequently in proximate analysis, proximate principle. ΘΚΠ the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > general chemical analysis dissection1605 anatomy1621 analysis1655 proximate analysis1831 1784 E. Cullen tr. T. Bergman Physical & Chem. Ess. I. p. xxxix The marine acid..contains phlogiston as a proximate principle [L. principii proximi]. 1831 T. P. Jones New Conversat. Chem. xxviii. 282 Sugar, starch, and gum are proximate principles, and these we obtain by proximate analysis. 1848 H. Watts tr. L. Gmelin Hand-bk. Chem. I. 110 Metamerism. This term is applied by Berzelius to the case in which the compound atoms of two chemical compounds containing the same elementary atoms..are nevertheless made up of different proximate elements. 1857 W. A. Miller Elements Chem. III. i. 6 The separation of wheat flour into starch, sugar, gluten, ligneous fibre, and oily matter, affords an instance of proximate analysis. 1948 W. C. Dampier Hist. Sci. (ed. 4) vii. 256 The proteins..are easily broken down into a number of proximate constituents known as amino-acids. 1971 M. F. Mallette et al. Introd. Biochem. ix. 314 The crude lipid of the proximate analysis found on..certain food labels refers to the nonvolatile material derived by weighing the residue after evaporation of the extraction solvent. 2004 Ambix 51 222 Klaproth found the following proximate principles in lapis lazuli: silica (46 %), alumina (14.5 %), [etc.]. < as lemmas |
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