SPECTROPHOTOMETRIC DETERMINATION OF TITANIUM (IV) IN STEEL, PAINT AND A COSMETIC CREAM USING TANNIC ACID IN MICELLAR MEDIUM | ||||
| Bulletin of Faculty of Science, Zagazig University | ||||
| Article 6, Volume 2016, Issue 1, 2020, Page 68-76 PDF (440 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/bfszu.2016.31066 | ||||
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| Authors | ||||
| M. Zaky,1; Kh Elgendy2; B. Abd El-Wahaab1 | ||||
| 1Chemistry Depart., Fac. of Science, Zagazig Univ., Zagazig, Egypt | ||||
| 2Chemistry Depart., Fac. of Science, Zagazig Univ., Zagazig, Egypt. | ||||
| Abstract | ||||
| A highly simple, rapid and sensitive spectrophotometric procedure is described for micro-amounts determination of titanium (IV) using tannic acid (tannin) as a new reagent in presence of Triton X-100 (micellar medium). Titanium (IV) reacted with tannic acid in slightly acidic medium at pH=6 using citrate buffer solution to form a 1:2 red coloured stable complex with maximum absorption at 436 nm. The complex is instantaneously formed and remain stable over 2 hr. Beer's law is obeyed in the range of 2-26 μg Ti ml-1 with molar absorptivity to be 3.66 × 104 L mol-1 cm-1. The proposed method is successfully applied for titanium determination in steel, paint and pharmaceutical samples. | ||||
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