Determination of Calcium, Strontium, Barium and Yitrium Spectropolarimetric Analysis
作者:
R.J. Palma,
P.E. Reinbold,
K.H. Pearson,
期刊:
Analytical Letters
(Taylor Available online 1969)
卷期:
Volume 2,
issue 10
页码: 553-564
ISSN:0003-2719
年代: 1969
DOI:10.1080/00032716908051328
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A spectropolarimetric method of analysis was developed for calcium(II), strontium(II), barium(II) and yttrium(III) utilizing the stereospecific ligand, D-(-)-1,2-propylenediaminetetraacetic acid (D(-)PDTA). The optical rotation of the solution was monitored with a photoelectric polarimeter to determine the end point of the titration. The metal complexes and titrant are optically active and serve as self-indicators. Since D(-)PDTA is stereospecific in its reaction with these metals, maximum utilization of the optical rotation of these complexes is achieved. The observed optical rotation is linear with respect to concentration of the metal complexes; consequently, it is possible to perform straight line extrapolations to the end point. The effects of some parameters were investigated and optimum conditions were established. The range of the average deviations from visual chelometry for the four metals determined was 0.00 to 0.50%.
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