Liquid-liquid extraction separation of thallium(I) with cryptand 222 and erythrosin

Thallium(I) was quantitatively extracted, at pH 6.5 with 1 × 10 3 M cryptand 222 in chloroform with 1 × 10 -3 M erythrosin as the counterion. From the organic phase it was stripped with 0.1 M sulphuric acid and was determined by atomic absorption spectrometry at 276.8 nm. The composition of extracte...

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Bibliographic Details
Published in:Analytica chimica acta 1992-12, Vol.270 (1), p.87-93
Main Authors: Gandhi, Mayuri N., Khopkar, Shripad M.
Format: Article
Language:English
Subjects:
Analytical chemistry
Atomic absorption spectrometry
Chemistry
Crystands
Erythrosin
Exact sciences and technology
Extraction
Liquid-liquid extraction
Spectrometric and optical methods
Thallium
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Summary:Thallium(I) was quantitatively extracted, at pH 6.5 with 1 × 10 3 M cryptand 222 in chloroform with 1 × 10 -3 M erythrosin as the counterion. From the organic phase it was stripped with 0.1 M sulphuric acid and was determined by atomic absorption spectrometry at 276.8 nm. The composition of extracted species for thallium(I): cryptand 222: erythrosin was 1:1:1. The separation of thallium(I) from several elements, and its determination in spiked sediments, was possible.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(92)80094-N