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

✍ Scribed by Mayuri N. Gandhi; Shripad M. Khopkar

• Book ID: 102624584
• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 340 KB
• Volume: 270
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(92)80094-n

✦ Synopsis

Thallium(I) was quantitatively extracted, at pH 6.5, with 1 x 10 -3 M cryptand 222 in chloroform with 1 x 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(l) from several elements, and its determination in spiked sediments, was possible.