Extraction of Heavy Metal Ions from Aqueous Solutions into In Situ Formed Ionic Liquids Followed by Determination by Microwave Plasma Atomic Emission Spectrometry
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引用次数: 0
Abstract
Ionic liquids based on quaternary ammonium cations—tetrahexylammonium dioctyl sulfosuccinate (THADOSS) and tetrabutylammonium dioctyl sulfosuccinate—were synthesized in situ by mixing aqueous solutions of salts yielding the cation and anion components of the ionic liquid. The ionic liquids were tested for the extraction of heavy metal ions from aqueous solutions. The Cd(II), Co(II), Cu(II), Ni(II), Pb(II), and Zn(II) ions were quantitatively extracted into the in situ formed THADOSS in the presence of 4-(2-pyridylazo)resorcinol (1 × 10–3 M) at pH 4.9 within 1 min. The study demonstrated the feasibility of determining metals by microwave plasma atomic emission spectrometry after extraction into ionic liquids. The limits of detection ranged from 2 to 25 µg/L.
期刊介绍：
The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.
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