Determination of thorium in rocks : The arsenazo III reaction in perchlorate medium

✍ Scribed by Sydney Abbey

• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 967 KB
• Volume: 30
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)88706-1

✦ Synopsis

Many reagents have been used for the photometric determination of small amounts of thorium, the most favoured being "thorin"1, also known as "thoron", "APANS", and by several other names. The reaction of thorium with thorin, as with other reagents, is not selective, and rather complete separation of .thorium from most other elements is rccluired. FLETCHER,

GRIMAI.III AND JXNKINS~

improved the selectivity of the reaction by introducing mesotartaric acid as a masking agent for zirconium. However, the concentration of mesotartaric acid is critical and rather elaborate separations arc still requireda. KUZNETSOV"~~ and SAVVIN" introduced a scrics of reagents similar '5. ABBEY 17 M. K. CAHRON, I). L. SKINNER AND R. E. STEVENS, rlnul. Chcttr., zp (1955) x058. 18 V. F. LUKYANOV. S. B. SAWIN AND I. V. NIKOLSKAYA.