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  3. Spectrophotometric determination of mercury in water samples after cloud point extraction using nonionic surfactant Triton X-114

Spectrophotometric determination of mercury in water samples after cloud point extraction using nonionic surfactant Triton X-114

  • J Hazard Mater. 2009 Jun 15;165(1-3):1200-3. doi: 10.1016/j.jhazmat.2008.09.091.
Ali Niazi 1,  Tahereh Momeni-Isfahani,  Zahra Ahmari
Affiliations

Affiliation

  • 1 Department of Chemistry, Faculty of Sciences, Islamic Azad University, Arak Branch, Iran. [email protected]
PMID: 18980803 DOI: 10.1016/j.jhazmat.2008.09.091
Abstract

A cloud point extraction process using the nonionic surfactant Triton X-114 for extracting mercury from aqueous solutions was investigated. The method is based on the complexation reaction of Hg(II) with Thio-Michler's Ketone (TMK) and micelle-mediated extraction of the complex. The optimal extraction and reaction conditions (e.g., pH, reagent concentration, effect of time) were studied, and the analytical characteristics of the method (e.g., limit of detection, linear range) were obtained. Linearity was obeyed in the range of 5.0-80.0 ng mL(-1) of Hg(II) ion. The detection limit of the method was 0.83 ng mL(-1) of Hg(II) ion. The interference effect of some anions and cations was also tested. The method was applied to the determination of mercury in water samples.

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