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

Guang Pu Xue Yu Guang Pu Fen Xi. 2002 Oct;22(5):800-2.
[Article in Chinese]

Abstract

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 (TMBPS) 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-1cm-1. The linear range of the determination was 0.02-1 microgram.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-1cm-1.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkanesulfonic Acids / chemistry
  • Benzidines / chemistry
  • Chelating Agents / chemistry
  • Electrons
  • Environmental Monitoring
  • Phosphates / chemistry
  • Sensitivity and Specificity
  • Spectrophotometry / methods*
  • Tungsten Compounds / chemistry
  • Vanadates / chemistry
  • Vanadium / analysis*
  • Water Pollutants, Chemical / analysis*
  • Water Supply / analysis

Substances

  • Alkanesulfonic Acids
  • Benzidines
  • Chelating Agents
  • Phosphates
  • Tungsten Compounds
  • Water Pollutants, Chemical
  • Vanadium
  • propylsulfonic acid
  • 3,3',5,5'-tetramethylbenzidine
  • Vanadates