Spectrophotometric determination of vanadium(V) through the formation of a tungstovanadophosphate-TMBPS charge transfer complex

被引：0

作者：

Di, JW ^{[1
]}

Tu, YF ^{[1
]}

Wu, Y ^{[1
]}

Liu, DQ ^{[1
]}

机构：

[1] Suzhou Univ, Dept Chem & Chem Engn, Suzhou 215006, Peoples R China

来源：

SPECTROSCOPY AND SPECTRAL ANALYSIS | 2002年 / 22卷 / 05期

关键词：

charge transfer complex; 3,3 ',5,5 '-tetramethylbenzidine-N-propanesulfonic(TMBPS); vanadium; spectrophotometry;

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A new spectrophotometric method was developed for the determination of vanadium (V). The method was based on the formation of tungstovanadophosphate-3,3', 5, 5'-tetramethylbenzidine-N-propanesulfonic (TNMPS) charge transfer complex. The spectrophotometric measurements were directly carried out at 450 nm and the apparent molar absorptivity was 2.74 X 10(4) L(.)mol(-1) cm(-1). The linear range of the determination was 0.02-1 mug(.)mL(-1). The sensitivity was enhancement with a flotation-extraction preconcentration method and the apparent molar absorptivity was 3.10 x 10(5) L.mol(-1) cm(-1) cm-1.

引用

页码：800 / 802

页数：3

共 13 条

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