Green approaches to colorimetric monitoring of calcium in water

Savvin, Sergey B.; Kuznetsov, Vladimir V.; Ermolenko, Yulia V.; Chernikova, Irina Yu.; Mikhailova, Alla V.

doi:10.1351/PAC-CON-08-10-05

Pure Appl. Chem., 2009, Vol. 81, No. 11, pp. 2123-2129

http://dx.doi.org/10.1351/PAC-CON-08-10-05

Published online 2009-10-26

Green approaches to colorimetric monitoring of calcium in water

Sergey B. Savvin¹, Vladimir V. Kuznetsov², Yulia V. Ermolenko², Irina Yu. Chernikova² and Alla V. Mikhailova¹*

¹ V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Science, RAS, Moscow, ul. Kosygina, 19, Russia
² D. Mendeleev University of Chemical Technology, Miusskaya sq. 9, 125047 Moscow, Russia

Abstract: Simple, ecologically harmless chemical reactions have always been a point of interest for chemists and analysts as fit to be applied to work in or out of laboratories. A new concept of chemical analysis is exemplified in the article by means of selective determination of calcium ions with the organic reagent arsenazo III (2,2'-[1,8-dihydroxy-3,6-disulfonaphthylene-2,7-bisazo]-bisbenzenearsonic acid disodium salt) with no application of toxic solvents during the seasonal analysis of water in the Yauza River (the city of Moscow).