Chromometry

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Chromometry

 

a method of titrimetric analysis (seeTITRIMETRIC ANALYSIS) based on the use of standard solutions of Cr(II) for the determination of oxidizing agents. The analysis is carried out in acidic medium. The titration end point is established potentiometrically or amperometrically with a rotating platinum microelectrode; less often it is established using chemical indicators.

Chromometry is used for determining Cu(II), Hg(II), Ce(IV), Sn(IV), Ti(IV), As(V), Sb(V), Bi(III), V(V), Cr(VI), Mo(VI), W(VI), Mn(VII), Fe(III), and various organic compounds, such as aldehydes, quinones, azo compounds, nitro compounds, and nitroso compounds. In some cases, the consecutive titration of several elements in a single solution is possible without their separation.

REFERENCE

Busev, A. I. Primenenie soedinenii dvukhvalentnogo khroma v analiticheskoi khimii. Moscow, 1960.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
The color of the skin was measured by chromometry, and changes in skin due to inflammation were assessed by videocapillaroscopy, which calculates the congestion of small blood vessels.
Konig used these complementary colors for quantitative and qualitative analysis of elements, and called this method "chromometry." For example, a borax bead containing iron turns yellow, one containing manganese turns purple.