The ultraviolet spectrophotometric determination of rhenium by the pyrrolidinedithiocarbamate method

✍ Scribed by W. Likussar; G.E. Sparks; D.F. Boltz

• Publisher: Elsevier Science
• Year: 1970
• Tongue: English
• Weight: 397 KB
• Volume: 52
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(01)80966-1

✦ Synopsis

In the course of a systematic investigation of ammonium pyrrolidinedithiocarbamate*** (APDC) as a reagent in analytical absorption spectrometry, the absorption spectrum of the metal chelate formed by the reaction of rhenium(VII) and ammonium pyrrohdinedithiocarbamate in very acidic solution was found to be the basis of a sensitive ultraviolet spectrophotometric method for the determination of rhenium.

Many methods have been proposed for the spectr0photometric determination of trace amounts of rhenium. Thiocyanate 1-7, a_iurildioxime s-11, thiosalicylic acidt o, t a and cationic dyes 14-1v have been the most extensively used reagents for visible spectrophotometric methods. Ultraviolet spectrophotometric methods have been based on the formation of hexachlororhenate(IV) ls,m or tetraphenylarsonium perrhenate ~-0. 3-Phenyl-5-(2-furyl)pyrazolinedithiocarbamate has been used to form an extractable complex with perrhenate exhibiting an absorbance maximum at 37o nm 21. However, no information has been published previously concerning the use of ammonium I-pyrrolidinedithiocarbamate as a reagent for the spectrophotometric determination of rhenium.