The use of slurry sampling for the determination of manganese and copper in various samples by electrothermal atomic absorption spectrometry


Tokman N.

JOURNAL OF HAZARDOUS MATERIALS, vol.143, pp.87-94, 2007 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 143
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jhazmat.2006.08.068
  • Title of Journal : JOURNAL OF HAZARDOUS MATERIALS
  • Page Numbers: pp.87-94

Abstract

Manganese and copper in multivitamin-mineral supplements and standard reference materials were determined by slurry sampling electrothermal atomic absorption spectrometry. Slurries were prepared in an aqueous solution containing Triton X-100. The effects of different parameters such as ratio of solid to liquid phase volume, total slurry volume and addition of Triton X-100 as a dispersant on the analytical results were investigated. The graphite furnace programs were optimized for slurry sampling depending on the analytes and their concentrations in the samples. The linear calibration method with aqueous standard solutions was used for the quantification. At optimum experimental conditions, R.S.D. values were below 5%. The analytes were determined in the limits of 95% confidence level with respect to certified values in coal and soil standard reference materials and to those found by wet-digestion in multivitamin-mineral supplements. Detection limits (3 delta) for Mn and Cu were 0.10 mu gL(-1) and 1.82 mu g L-1 for 10 mu L coal standard reference material slurry, respectively. (C) 2006 Elsevier B.V. All rights reserved.