Spectrophotometric determination of zirconium(IV) and fluoride ion using color reaction among salicylfluorone, zirconium(IV) and fluoride ion

Kumiyo Shimizu, Yoshimi Morita, Kumiko Tanaka, Shinichiro Kamino, Tsuyoshi Fujimoto, Takako Yamaguchi, Yoshikazu Fujita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A novel spectrophotometric method was established for the determination of zirconium(IV) and fluoride ion. The method was based on complex formation among salicylfluorone (SAF), Zr(IV) and fluoride ion in the presence of a cationic surfactant. In the determination of Zr(IV), Beer's law was obeyed in the range of 0.09∼0.46 μg cm -3 in a neutral medium. The effective molar absorptivity at 550 nm and the relative standard deviation were 1.7 × 10 5 dm 3 mol -1 cm -1 and 0.32% (n = 6), respectively. In the determination of fluoride ion, Beer's law was obeyed in the range of 3.8∼65 ng cm -3 in a strong acidic medium. The effective molar absorptivity at 552 nm and the relative standard deviation were 2.1 × 10 5 dm 3 mol -1 cm -1 and 1.3% (n = 6), respectively.

Original languageEnglish
Pages (from-to)773-779
Number of pages7
JournalBUNSEKI KAGAKU
Volume56
Issue number9
DOIs
Publication statusPublished - Nov 21 2007

Keywords

  • Fluoride ion
  • Mixed complex formation
  • Salicylfluorone
  • Spectrophotometry
  • Zirconium(IV)

ASJC Scopus subject areas

  • Analytical Chemistry

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