Heterometric micro-determination of traces of iron in thiocyanate solutions by titration with nitron

✍ Scribed by Mordechai (Max) Bobtelsky; A.H.I Ben-Bassat

• Publisher: Elsevier Science
• Year: 1959
• Tongue: English
• Weight: 479 KB
• Volume: 21
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(59)80209-9

✦ Synopsis

Traces of ferric iron wcrc cletcrmined hetorometricatly in concentrated solutions of potassium thiocyanste by titration with nitron. The solutions could contain 99.9% of the following cations: C&e, B&e, M&s, Zn+s, Cr+s, Al+s, Mnj-2, Cd+s, Th+4, C&s or ~9% of Ni+s, Pb+s, Cu+*, Mo+s, V+s and W. A titration usually iasted 5 min and in most cases the error was cu. I%. The molar ratio of [Fe] : [nitron] was always equal to I : 6.6. RESUME Une methods rapide, par h&t&om&rie, est proposde ponr la dosage de traces de fer(lf1). Le titrage s'effectue au moyen de nitron, dans dcs solutions conccntr&s de thiocyanate de potassium. ZUSAMMENFASSUNG Es wird eine ,,heterometrische" Methoda bcschrieben zur raschen Bestimmung von Spuren von Eisen(IlI) durch Titration mit Nitron in ksliumthiocyana~haltiger L&sung.