Resorcinol as a reagent for the spectrophotometric determination of ferric iron

✍ Scribed by G.S. Rao

• Publisher: Elsevier Science
• Year: 1959
• Tongue: English
• Weight: 358 KB
• Volume: 21
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(59)80238-5

✦ Synopsis

In a recent communication the use of resorcinol as a reagent for the spectrophotometric determination of uranium has been rcportcd 1. Resorcinol gives a violet colour with ferric ions, which is unaffectctl by ferrous ions. In contrast to existing methods+6 the preparation of the reagent is simple. The use of resorcinol as a reagent for the spcctrophotometric determination of ferric iron is described in this paper. EXPERIMENTAL Absorption mcasurcmcnts were made on Coleman's Univcrval Spcctrophotomcter, Motlei 14. A Marconi prr mctcr was cmplaycd for pi mcasurcn1unts. A frcuhly prcprrrctl solution of rcvorcinol (Mcrclr'za pure quality) was used for the tncasurcmcnts. Solutions of ferric chloride (Andali) were frcsllly prcparcd anti tttc iron content was dctcrmiuccl gravimctricaily :W f:q&k~. Suitable AnaIaR saits were uvcd for testing the intcrfercncc of cations and anions. DISCWSSIDN