INDICATOR FOR THE TITRIMETRIC DETERMINATION OF CALCIUM AND TOTAL CALCIUM PLUS MAGNESIUM WITH ETHYLENEDIAMINETETRAACETATE IN WATER

Authors
RATHORE DPS BHARGAVA PK KUMAR M TALRA RK
Citation
Dps. Rathore et al., INDICATOR FOR THE TITRIMETRIC DETERMINATION OF CALCIUM AND TOTAL CALCIUM PLUS MAGNESIUM WITH ETHYLENEDIAMINETETRAACETATE IN WATER, Analytica chimica acta, 281(1), 1993, pp. 173-177
Citations number
20
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
281
Issue
1
Year of publication
1993
Pages
173 - 177
Database
ISI
SICI code
0003-2670(1993)281:1<173:IFTTDO>2.0.ZU;2-B
Abstract
The use of 2-[(4-phenylthioacetic acid)azo]-1,8-dihydroxynaphthalene-3 ,6-disulphonic acid as an indicator for the titrimetric determination of both calcium and total calcium plus magnesium is reported. The vari ables affecting the colour change at the end-point were optimized. The method is free from most metal interferences without the need for pot assium cyanide and other masking agents. The method was applied to wat er samples and the results obtained compared favourably with those giv en by standard methods.