Solvent extraction separation of calcium (II) with cryptand 222 using erythrosine as the counter anion

Authors
Ajgaonkar, HS Khopkar, SM
Citation
Hs. Ajgaonkar et Sm. Khopkar, Solvent extraction separation of calcium (II) with cryptand 222 using erythrosine as the counter anion, CHEM ANAL, 44(1), 1999, pp. 61-66
Citations number
13
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
CHEMIA ANALITYCZNA
ISSN journal
00092223 → ACNP
Volume
44
Issue
1
Year of publication
1999
Pages
61 - 66
Database
ISI
SICI code
0009-2223(1999)44:1<61:SESOC(>2.0.ZU;2-T
Abstract
Calcium(II) was quantitatively extracted at pH 9.0 with 1 x 10(-3) mol l(-1 ) Kryptofix 222 in a mixture of xylene-nitrobenzene (8:2) in the presence o f 1 x 10(-3) mol l(-1) erythrosine B as a counter ion. Calcium from the org anic phase was determined directly spectrophotometrically at lambda = 548 n m against the reagent blank. The study of the effect of pH, varying concent rations of erythrosine B, cryptand 222 and the role of diluent has been stu died. Calcium was separated from large number of diverse ions in varying ra tios.