| 单词 | oxalate |
| 释义 | ▪ I. oxalate, n. Chem.|ˈɒksələt|
[a. F. oxalate (G. de Morveau and Lavoisier, 1787), f. oxal- in oxalique oxalic + -ate4.]
A salt of oxalic acid.
1791Hamilton tr. Berthollet's Dyeing I. 243 The acidulous oxalate of pot-ash may also be employed for this purpose. Ibid. II. 371 Oxalats. 1807Marcet in Phil. Trans. XCVII. 303 The lime was precipitated by oxalat of ammonia. 1869Roscoe Elem. Chem. (1874) xxxiv. 314 Oxalic acid is a dibasic salt, and forms two classes of salts, called Normal Oxalates, and Acid Oxalates.
attrib.1889Anthony's Photogr. Bull. II. 297 Time..is required for the development of a good negative, both with the pyro and oxalate developer.
Hence oxaˈlatic a., relating to oxalates.
1853in Dunglison Med. Lex. 1892Syd. Soc. Lex., Oxalatic diathesis, the oxalic Diathesis. [See oxalic c.]
▪ II. oxalate, v. Med.|ˈɒksəleɪt|
[f. the n.]
trans. To add an oxalate to, esp. so as to prevent coagulation of blood.
1911Amer. Jrnl. Physiol. XXIX. 204 The tissue extract was itself oxalated to remove any calcium that may have been present. 1934Brit. Med. Jrnl. 7 July 10/2 Blood collected under paraffin was oxalated and centrifuged and the plasma examined spectroscopically. 1954Blood IX. 610 The serum was decanted and 2·8 ml. were oxalated by adding 0·5 ml. of 0·1 M. potassium oxalate.
So ˈoxalated ppl. a., containing added oxalate.
1893Jrnl. Path. & Bacteriol. I. 443 (heading) Effect of graduated additions of calcium chloride to oxalated blood. 1946Nature 16 Nov. 708/2 The prothrombin concentration in normal human oxalated plasma averaged approximately 2 mgm. per 100 ml. when expressed as protein nitrogen. 1964W. G. Smith Allergy & Tissue Metabolism vi. 69 Oxalated blood samples were collected both before and for several minutes after shock. |
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