| 单词 | buffer action |
| 释义 | > as lemmasbuffer action b. Chemistry. A substance or a mixture of substances, usually of a weak acid or base and its salt, which stabilizes the degree of acidity or alkalinity of a solution; also, a buffer solution. Also attributive in buffer action, buffer base, buffer salt; buffer solution n. (see Compounds 1). ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > buffers buffer1914 buffer solution1921 tris buffer1959 1914 Chem. Abstr. 3561 The action of moderators (buffers) in the shifting of the acid-base equilibrium in biological liquids... A monobasic acid shows its max. buffer reaction at a H-ion conc... The max. buffer action of all weak acids in equiv. concs. is the same. 1922 Encycl. Brit. XXXI. 59/1 Death will be due to acid poisoning, and the administration of what are called ‘buffer salts’..is instrumental in postponing the fatal issue. 1926 A. G. Tansley & T. F. Chipp Aims & Methods Study Vegetation vii. 124 This substance acts as an acid ‘buffer’ to the soil solution. 1961 Lancet 22 July 176/1 The solvent contains 45 ml. of phosphate buffer (pH = 7·4). 1965 J. R. Robinson Acid-base Regulation (ed. 2) xiii. 31 It therefore seems preferable to restrict the terms ‘acidosis’ and ‘alkalosis’ to conditions in which the total concentration of buffer base is less than or greater than the normal. < as lemmas |
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