Supramolecular solvent-based liquid phase extraction of antimony prior to spectrophotometric quantification


Khan M., Jamshed M., Badhshah A., Nishan U., SOYLAK M.

ENVIRONMENTAL MONITORING AND ASSESSMENT, vol.194, no.8, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 194 Issue: 8
  • Publication Date: 2022
  • Doi Number: 10.1007/s10661-022-10280-9
  • Journal Name: ENVIRONMENTAL MONITORING AND ASSESSMENT
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, Geobase, Greenfile, MEDLINE, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Supramolecular solvent, Liquid-liquid extraction, Spectrophotometric determination, Antimony, Dithizone, CLOUD POINT EXTRACTION, ABSORPTION SPECTROMETRIC DETERMINATION, MICROEXTRACTION TECHNIQUES, INORGANIC ANTIMONY, WATER, PRECONCENTRATION, SPECIATION, SAMPLES, COPPER, CADMIUM
  • Erciyes University Affiliated: Yes

Abstract

Antimony (Sb) is highly hazardous to human health even in minute concentration. Therefore, its accurate and precise determination in the real environmental samples is of immense importance. In this work for the first time, UV-Vis spectrophotometric method was developed for the quantification of Sb(III) from water samples using supramolecular solvent (undecanol-tetrahydrofuran)-based extraction. The maximum absorption wavelength for antomony-diathizone complex was found to be 590 nm having molar absorptivity of 3.1 x 10(4) L.mol.cm(-1). Factors affecting extraction efficiency like solution sample volume, amount of chelating agent, pH, matrix effect, and type and volume of supramolecular solvent were determined and optimized. Analytical parameters like limit of detection (0.19 mu g L-1), limit of quantification (0.62 mu g L-1), pre-concentration factor (15), enhancement factor (15), and relative standard deviation for 8 successive analysis (0.8%) were calculated under optimized experimental conditions. The method was applied to real water samples like tap water of laboratory, waste water from Kohat hospitals, and dam water (Tanda dam Kohat) with quantitative addition recovery (94-100%).