单词 | molybdate |
释义 | molybdaten. Chemistry. A salt containing oxyanions of hexavalent molybdenum; esp. a salt of the anion MnO42−; (also) this anion. ΘΚΠ the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > molybates molybdate1788 silicomolybdate1881 1788 J. St. John tr. L. B. Guyton de Morveau et al. Method Chym. Nomencl. 136 Molybdats, salts formed by the union of the molybdic acid with different bases. This genus of salts was without a name in the ancient nomenclature. 1796 Philos. Trans. (Royal Soc.) 86 288 The acidulous molybdate of pot-ash. 1806 R. Patterson Adams's Lect. Nat. & Exper. Philos. (rev. ed.) I. App. 546 Molybdats—soluble in water..but little known. 1861 H. W. Bristow Gloss. Mineral. Molybdate of Iron, occurs in subfibrous or in tufted crystals of a deep yellow colour; also pulverulent. 1890 J. Cagney tr. R. von Jaksch Clin. Diagnosis v. 117 Molybdate of soda. 1928 J. H. Yoe Photometric Chem. Anal. I. xxxi. 366 Silicates and phosphates form yellow silico- and phosphomolybdates with ammonium molybdate in acid solution. 1950 N. V. Sidgwick Chem. Elements II. 1039 Simple molybdates of the type M2MoO4 are known, but the tendency to condensation is so great that they only separate from solutions containing a large excess of alkali. 1994 M. B. McBride Environmental Chem. Soils ix. 317 For many anions, such as molybdate and selenite, low pH favours sorption and precipitation. This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022). < n.1788 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。