- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Spectrophotometric Determination of Cerium (III) with Arsenazo III: Application to Sea Water and Synthetic Alloys | ||
| Rafidain Journal of Science | ||
| Article 4, Volume 24, Issue 5, 2013, Pages 37-50 PDF (0 K) | ||
| DOI: 10.33899/rjs.2013.74510 | ||
| Authors | ||
| Sadallah T. Sulaiman; Ghaydaa K. Hanna; Wadala A. Bashir | ||
| Abstract | ||
| The detailed investigation of a sensitive and selective spectrophotometric method for the determination of trace amounts of cerium is described. The method is based on the reaction of cerium(III) with arsenazo ш in the presence of sodium dodecyl sulphate surfactant at pH 3.0 to form a blue-greenish coloured chelate absorbing maximum at 653 nm. Beer’s law is obeyed over the range (5-70) µg /25 ml, with a molar absorptivity of (4.99×104) l.mol-1.cm-1 and the coefficient of determination (r2) is 0.9994, Sandell’s sensitivity index is (28.08×10-4) µg.cm-2, a relative error of (0.0-0.2%) and a relative standard deviation of (0.0 to +2.1)%, depending on the concentration levels in the calibration curve. The method has been applied successfully to determine cerium in sea water and some synthetic alloys. | ||
| Keywords | ||
| III; Arsenazo III reagent; Sodium dodecyl sulphate; Spectrophotometry | ||
|
Statistics Article View: 740 PDF Download: 627 |
||