polarogramn.
/ˈpəʊlərəɡram/, U.S. /poʊˈlɛrəˌɡræm/ Chemistry.
A graphical record produced by a polarograph, typically showing a number of steps occurring at voltages corresponding to particular anions in the sample, the height of each step being proportional to the concentration of the corresponding anion.
ΘΚΠ
the world > matter > chemistry > chemical assay or analytical chemistry > [noun] > acetimetry > chromatography > record of
phase diagram1908
chromatogram1922
polarogram1925
paper chromatogram1944
partition chromatogram1944
gas chromatogram1952
the world > matter > physics > electromagnetic radiation > electricity > electrolysis > [noun] > instrument or apparatus > product of
polarogram1925
1925 J. Heyrovský & M. Shikata in Recueil Travaux Chimiques Pays-Bas 44 496 The authors have set up a photographic auto-registering machine, which..records the polarisation curves, giving such ‘polarograms’ in less than 20 minutes.
1946 Nature 20 July 96/1 If several elements can be isolated simultaneously, there is the possibility of estimating them in a single polarogram.
1974 S. E. Allen Chem. Anal. Ecol. Materials 398 If poor quality polarograms are produced even after passing nitrogen further bubbling may improve the display.
2003 Phytochem. Anal. 14 224 The differential pulse polarogram showed a distinct peak..at a peak potential of −0.095 V.
This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).
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n.1925