Complexonometry

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Complexonometry

(also chelatometry, “trilonometry”), a method of titrimetric analysis based on the formation of highly water-soluble and weakly dissociated compounds formed by the reaction of most cations with aminopolycarboxylic acids (com-plexones). The titration endpoint is established using complexo-nometric and other indicators. In some cases, especially in the titration of turbid or strongly colored solutions, methods not involving indicators (instrumental methods), such as potenti-ometry, coulometry, conductometry, and photometric analysis, are used. Complexonometry is used to determine the content of minerals, products of metallurgy, and pharmaceuticals and the hardness of water.

REFERENCE

Schwarzenbach, G., and G. Flaschke. Kompleksonometricheskoe titrovanie. Moscow, 1970. (Translated from German.)

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