Studies on the Extraction and Spectrophotometric Determination of Titanium (IV) using Nt. Hydroxy - N1,N2.diphenylbenzamidine and Thiocyanate
No Thumbnail Available
Date
1993-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa Universty
Abstract
Titanium (IV) has been found to react with N'·Hydroxy.N',N2.diphenylbenzamidine (
HDPBA) and thiocyanate to form an orange colored mixed ligand complex which was
quantitatively extractable into toluene from 0.5 . 0.25 M HCl solutions. The complex
exhibited an absorption maximum in the visible region at 400 nm with a molar absorptivity
0[20,000 M" cm" and the system obeyed Beer's law in the concentration range of 0.29·3.6
ppm of Ti. The composition of the complex has been established spectrophotometrically
to be 1: 1:2 (Ti: SCN:HDPBA). The effects of foreign ions and several other experimental
variables have been studied to establish the optimum conditions for the extraction and
determination of titanium. On the basis of these studies a new method has been developed
for the determination of titanium (IV) with HDPBA and thiocyanate by solvent extraction
and spectrophotometry. The method is precise, fairly sensitive and highly selective and free
from rigid control of experimental variables, Moreover, the method has been successfully
applied to the determination of titanium in several synthetic samples corresponding to
titanium containing ores, minerals and alloys
Description
Keywords
Titanium (IV) using Nt. Hydroxy - N1,N2.diphenylbenzamidine