Spectrophotometric and Potentiometric Analysis of Calcichrome and Its Complex With Calcium Ion

Authors

Saja S Al-Samarraâ€™ay
Ismail K Al-Hitti
Omur H Al-oubaydi

DOI:

https://doi.org/10.30526/2017.IHSCICONF.1801

Keywords:

Calcichrome , Stoichiometry , Mole ration method, Continuous Variation method , Selective reagent .

Abstract

It was confirmed in this research that the ligand calcichrome formed stable complex with calcium ion at pH of 8.5 which verified by UV/Vis and FTIR spectral analysis and the complexation occurred via hydroxyl groups .

The stoichiometric ratio of the formed complex was found to be 1:1 by mole ratio and continuous variation methods . Dry ashing method of the complex and flame emission photometric analysis offered a calcium percentage in calcium complex equal 4.5% with an error of 2.41% due to experimental errors .