Determination of Zinc in Environmental Samples by Solid Phase Spectrophotometry: Optimization and Validation Study.

DOI PDF Web Site Web Site Web Site View 1 Remaining Hide 1 Citations 37 References

Bibliographic Information

Other Title
  • Determination of Zinc in Environmental

Search this article

Abstract

A simple and specific solid-phase spectrophotometric (SPS) determination of zinc in μg dm-3 level has been developed based on the reaction of Zn(II) with 4-(2-pyridylazo)resorcinol (PAR) in the presence of potassium iodide; the product was then fixed on an anionic exchanger. The absorbance of the gel, packed in a 1 mm cell, is measured directly. PAR and KI concentrations were optimized simultaneously using response surface methodology (RSM) from sequential experimental Doehlert designs. The advantages of this methodology are discussed, as opposed to univariate optimization, which is also used. The method was validated by obtaining the performance characteristics: linearity, detection and quantification limits, precision, robustness and selectivity, using suitable chemometric techniques; the trueness was confirmed on environmental samples (water and milk).

Journal

  • Analytical Sciences

    Analytical Sciences 14 (4), 791-797, 1998

    The Japan Society for Analytical Chemistry

Citations (1)*help

See more

References(37)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top