- 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 Cobalt(II) with Mordant Blue 9 -Application to Vitamin B12 (Injections and Powder) | ||
| Rafidain Journal of Science | ||
| Article 10, Volume 27, Issue 2, 2018, Pages 93-102 PDF (536.2 K) | ||
| DOI: 10.33899/rjs.2018.145394 | ||
| Authors | ||
| Saddalah T. Sulaiman; Tamathir A. Hamoudi | ||
| Abstract | ||
| A spectrophotometric method has been developed for determination of cobalt with Mordant Blue 9 in presence of cetyltrimethylammonium bromide (CTAB) in order to form an intense violet-colored chelate which exhibits maximum absorption at 586 nm at pH 3. Beer’s law is obeyed over the range of 0.004 -1 ppm with a molar absorptivity 3.97×104 l.mol-1.cm-1, Sandell’s sensitivity index of 1.484 ng.cm-2, while LOD (limit of dedication), LOQ (limit of quantitation) are found to be 4.006 ng/ml (n=10) and 13.353 ng/ml (n=10), respectively. The method has been applied for determination of Co(II) in pharmaceutical preparations. | ||
| Keywords | ||
| cobalt; Mordant Blue; vitamin B; CTAB; spectrophotometry | ||
|
Statistics Article View: 678 PDF Download: 1,560 |
||