Ion-exchange Separation and Spectrophotometric Determination of Trace Amount of Aluminium with Thorinin the Presence of Triton X-100

Triton X-100 존재하에 Thorin에 의한 미량의 알루미늄 이온의 분광학적 정량 및 이온-교환 분리

  • 박찬일 (시립인천대학교 자연과학대학 화학과) ;
  • 차기원 (인하대학교 이과대학 화학과) ;
  • 정덕채 (시립인천대학교 자연과학대학 화학과)
  • Received : 1999.06.09
  • Published : 1999.12.25

Abstract

The spectrophotometric determination of Al(III) with thorin have been investigated. The optimum condition of pH, concentration of ligand and surfactant, and stability were evaluated. The thorin ligand offers selective separation of Al(III) from sample solution containing Fe(III), Ni(II), Cu(II), Pb(II) and Cu(II). Various surfactants were tested and Triton X-100 showed the best stability and the maximum absorbance in an aqueous solution of Al(III)-Thorin-Triton X-100 complex appears about 526 nm. The method was applied for the determination of Al(III) in mixed sample solution. Separation and preconcentration was performed with a short column filled with resorcinol-formaldehyde resin. Control of the pH during the column operation is essential because the adsorption capacities are very sensitive to change in pH. Their separation was carried out in 0.2 M acetic acid-sodium acetate buffer solution (pH 4.5) and 1.0 M $HNO_3$media.

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