Reversed phase HPLC determination of titanium(IV) and iron(III) with sodium 1,2-dihydroxybenzene-3,5-disulfonic acid
✍ Scribed by Nagaosa, Yukio ;Segawa, Shin-ichi
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 296 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Abstract
A highly sensitive method has been developed for the determination of titanium(IV) and iron(III) by ion‐pair reversed phase liquid chromatography using sodium 1,2‐dihydroxybenzene‐3,5‐disulfonic acid (Tiron) as a precolumn chelating reagent. The metal ‐ Tiron chelates were separated on a C~18~ (ODS) column; the mobile phase was a 2:8 (v/v) mixture of acetonitrile and acetate buffer (0.04 mol/L, pH 6.2) containing 2.0 × 10^−3^ mol/L Tiron, 0.04 mol/L tetrabutylammonium bromide, and 0.1 mol/L potassium nitrate. The detection limits for titanium(IV) and iron(III) are 0.5 and 2.0 μg/L, respectively. The method has been applied to the simultaneous determination of titanium(IV) and iron(III) in river water samples and has furnished highly precise results.