On the concentration and separation of the trace-elements Fe, Cu, Zn, Mn, Pb, Mo and Co: II. Solvent extraction

✍ Scribed by P.C. van Erkelens

• Publisher: Elsevier Science
• Year: 1961
• Tongue: English
• Weight: 338 KB
• Volume: 25
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(61)80189-x

✦ Synopsis

Paper chromatographic separation of x4C-labelled metal acetylacetonates, which require only a small excess of the reagent, has been studied s without success: traces of the labelled reagent adhered to the paper and gave rise to a variable background. Anal. Chin*. Acta, 25 (196I) I29-x35 * All pH values given are starting values. The final pH values were either higher (below pH 5) or lower (above pH 5) than these starting values. Anal. Chim. Acta, 25 (i96i) I29-135 * This is in contrast to STEINBACH 11, but in accordance with FREISER et a2. 9 ** This extraordinary behaviour of cobalt was not clearly indicated by either STEINBACH l• or FREISER et al. 9 *** This technique was used by P~ZBZL a al. ~5 for the spectrophotometric determination of microgram amounts of cobalt and by the present author e for the radiometric determination of submicrogram amounts of cobalt.