Cloud point extraction for the determination of trace copper in water samples by flame atomic absorption spectrometry


ŞATIROĞLU N., Arpa Ç.

MICROCHIMICA ACTA, vol.162, pp.107-112, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 162
  • Publication Date: 2008
  • Doi Number: 10.1007/s00604-007-0904-y
  • Journal Name: MICROCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.107-112
  • Keywords: preconcentration, cloud point extraction, copper, ARS, FAAS, SPECTROPHOTOMETRIC DETERMINATION, NATURAL-WATER, SEA-WATER, PRECONCENTRATION, CADMIUM, SEAWATER, LEAD, CU, SEPARATION, METALS
  • Hacettepe University Affiliated: Yes

Abstract

Cloud point extraction has been used for preconcentration of trace amount of copper. The analyte was complexed with 1,2-dihydroxyanthraquinone-3-sulfonic acid sodium salt, and octylphenoxypolyethoxyethanol was added as a surfactant. The effects of experimental conditions such as pH, concentration of chelating agent and surfactant, equilibration temperature and time on cloud point extraction were studied. Under the optimum conditions, preconcentration of a 12 mL sample solution permitted the detection of 1.07 ng mL(-1) of copper with an enrichment factor of 21. The method was applied to the determination of trace copper in water samples.