3,4-Dihydroxybenzoic Acid As A Reagent for the Spectrophotometric Determination of Titanium
作者:
SérgioL.C. Ferreira,
A.C.Spinola Costa,
MariaG.M. Andrade,
BrunoF. Santos,
NeideO. Leite,
期刊:
Analytical Letters
(Taylor Available online 1993)
卷期:
Volume 26,
issue 5
页码: 1001-1011
ISSN:0003-2719
年代: 1993
DOI:10.1080/00032719308019881
出版商: Taylor & Francis Group
关键词: 3,4-dihydroxybenzoic acid;spectrophotometric titanium
数据来源: Taylor
摘要:
The reaction between titanium(IV) and 3,4-dihydroxybenzoic acid in aqueous media results in an intensely colored complex which is stable for at least 8h. It allows the spectrophotometric determination of titanium in silicate rocks. The proposed method, in pH 4.0–6.0, shows a molar absorptivity of 1.43.104L.mole−1.cm−1at 380 nm. Beer's Law is obeyed up to 3.0 μg/mL of titanium(IV). The interference of iron(III) can be eliminated by reduction to iron(II) with hydroxylamine hydrochloride. The method was applied to the determination of titanium in various standard rocks and the results indicated that the accuracy and precision are satisfatory.
点击下载:
PDF (282KB)
返 回