Summary
Titanium (IV) forms a complex with 4-(2-pyridylazo) resorcinol (PAR) in weakly acidic solutions. This complex can be used to determine titanium by adsorption voltammetry at a stationary Hg-electrode. The experimental conditions for the determination are described. The current-concentration curve is linear from 0.15–4.8 ng/g. Ti at a deposition time of 3 min, the detection limit lies at 0.1 ng/g. The influence of foreign ions was investigated. The determination can be carried out in the presence of a 1000-fold excess of iron by the standard addition method, albeit with decreased sensitivity.
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Jinkui, Z., Neeb, R. Determination of titanium by adsorption voltammetry with 4-(2-pyridylazo) resorcinol. Fresenius J Anal Chem 338, 34–36 (1990). https://doi.org/10.1007/BF00322780
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DOI: https://doi.org/10.1007/BF00322780