Spectrophotometeric determination of trace amounts of Al3+ ion in water samples after cloud point extraction using quinizarin as a complexing agent.
In this study, cloud point extraction was used for the preconcentration of Al(3+) ion after the complex formation with 1,4-dihydroxy-9,10-anthraquinone (Quinizarin [QUIN]), and subsequent analysis by spectrophotometeric method, using Triton X-114 as surfactant. The optimal extraction and reaction conditions were studied (i.e., pH = 5.5, 0.1 mM QUIN, Triton X-114 = 0.1% (w/v)), and the analytical characteristics of the method (e.g., limit of detection, linear range, preconcentration, and enrichment factors) were obtained. Linearity was obeyed in the range of 3.33-166.67 ng ml(-1) of Al(3+) ion. The detection limit of the method was 2.09 ng ml(-1) for Al(3+) ion. The interference effect of some anions and cations was also tested. The method was applied to determine Al(3+) ion in water samples.
Department of Chemistry, Yasouj University, Yasouj, 75918-79831, Iran, ashokrollahi@mail.yu.ac.ir.
Ardeshir
A
Shokrollahi
Roghayeh
R
Aghaei
D000535:Aluminum / Q000032:analysis* / Q000737:chemistry; D000880:Anthraquinones / Q000737:chemistry*; D002412:Cations; D005591:Chemical Fractionation / Q000379:methods*; D004784:Environmental Monitoring / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
D000880:Anthraquinones; D002412:Cations; D014874:Water Pollutants, Chemical; C034890:1,4-dihydroxyanthraquinone; D000535:Aluminum