- 作者: K. S. Patel; K. K. Ded; R. K. Mishra
- 作者服務機構: Department of Chemistry, Ravishankar University, Raipur-492010, M. P., INDIA
- 中文摘要: The extractive-photometric determination of iron(III) as a mixed-ligand complex with N-hydroxy-N, N′-di-p=tolyl-p-toluamidine (HDTTA) and thiocyanate is described. The orange-red Waterinsoluble 1:1:2 (metal: HDTTA: SCN¯) ternary complex formed in 0.1-0.6 M hydrochloric acid solutions is quantitatively extractable into benzene. The wavelength of maximum absorption, molar absorptivity and sensitivity of the colour system are 460nm, 12000 1. mole¯1 cm¯1 and 0.0046 μg Fe/cm2 respectively. The influence of foreign ions on the determination of iron has been studied. This method has also been applied to determine the iron content of several alloys.
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