Ppm Ce Research Articles

Spectrophotometric Determination of Cerium(IV) with Triflupromazine Hydrochloride

Triflupromazine hydrochloride is proposed as a new reagent for the spectrophotometric detn. of Ce(IV). The reagent forms red colored species with Ce(IV) instantaneously in 2.5-4.0M H3PO4. The red species has an absorption max. at 503 nm with molar absorptivity 6.70 A� 103 L mol-1cm-1. A 20-fold molar excess of the reagent is necessary for full development of the color intensity. Beer's law is valid over the concn. range 0.4-14.20 ppm Ce(IV). The effects of acid concn., time, temp., order of addn. of reagents, reagent concn., and diverse ions are reported. The proposed method offers the advantages of simplicity, selectivity, and rapidity without the need for extn. [on SciFinder(R)]