Determination of fluoride in water by reversed-phase high-performance liquid chromatography using F-La3+-alizarin complexone ternary complex

X. R. Xu, H. B. Li, J. D. Gu*, K. J. Paeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

A method for the determination of fluoride by reversed-phase, high-performance liquid chromatography (RP-HPLC) is described. Fluoride, La 3+ and alizarin complexone form F-La3+-alizarin complexone ternary complex, which is separated from the matrix on a RP, Ultrasphere C 18 column (250 x 4.6 mm, 5 μm) using methanol-water (19:81, v/v] mobile phase at 1.00 ml min-1; detection at 568 nm. The calibration graph was linear from 1.0-150 ng mL-1 for fluoride with a correlation coefficient: 0.9993 (n = 6). The detection limit was 0.2 ng mL-1. The method was successfully applied to the determination of fluoride in river and tap water. Recovery was: 94-102%, RSD in the range: 1.9-3.6%.

Original languageEnglish
Pages (from-to)745-747
Number of pages3
JournalChromatographia
Volume59
Issue number11-12
DOIs
StatePublished - Jun 2004
Externally publishedYes

Keywords

  • Column liquid chromatography
  • Fluoride - alizarin complex
  • Fluoride in river and tap water

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