| 单词 |
refractometry |
| 释义 |
refractometry|rɪfrækˈtɒmɪtrɪ|
[f. refract v. + -o + -metry.]
The measurement of refractive indices of media.
1902Encycl. Brit. XXX. 239/2 Refractometry by total reflection. 1950Engineering 10 Feb. 143/2 Increased attention has been devoted to methods of high-precision refractometry. 1958Oxf. Univ. Gaz. 23 Apr. 892 Studies in refractometry of living cells with particular reference to the investigation of osmoregulatory function. 1974Encycl. Brit. Macropædia IX. 633/2 Of the many laboratory principles employed in the process analytical instruments, the three in widest use today are refractometry, absorption spectroscopy, and gas chromatography.
Hence refractoˈmetric a., of or pertaining to a refractometer; made by means of refractometry; refractoˈmetrically adv.
1904Nature 4 Feb. 334/2 A simple thermostat for use in connection with the refractometric examination of oils and fats. 1920Amer. Jrnl. Physiol. LI. 278 Reading refractometrically the serum non-protein increase after the intra⁓venous injection of a known amount of acacia or gelatin solution. 1929Canad. Jrnl. Res. I. 13 The total solid content was determined refractometrically. 1937Discovery June 180/2 The application of refractrometric work to observe the progress of essential processes in the production of plastics may not be so commonly known. 1970Nature 26 Dec. 1269/1 The relative values [of purity] given by the four methods were: Lowry, 1·0; gravimetric, 0·93; refractometric, 0·87; ultraviolet absorption, 0·32. Ibid., The protein concentration..was also determined refractometrically and gravimetrically. |
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