Details

Autor(en) / Beteiligte

• Chatzimitakos, Theodoros G.
• Pierson, Stephen A.
• Anderson, Jared L.
• Stalikas, Constantine D.

Titel

Enhanced magnetic ionic liquid-based dispersive liquid-liquid microextraction of triazines and sulfonamides through a one-pot, pH-modulated approach

Ist Teil von

• Journal of Chromatography A, 2018-10, Vol.1571, p.47-54

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •A magnetic ionic liquid-based dispersive liquid-liquid microextraction is presented.•Quartz silica was used as a solid support for the magnetic ionic liquid.•A pH-modulated approach was employed to extract sulfonamides and triazines.•Sulfonamides and triazines were determined in environmental water using HPLC-DAD. In this study, an enhanced variant of magnetic ionic liquid (MIL)-based dispersive liquid-liquid microextraction is put forward. The procedure combines a water insoluble solid support and the [P66614+][Dy(III)(hfacac)4−] MIL, in a one-pot, pH-modulated procedure for microextraction of triazines (TZs) and sulfonamides (SAs). The solid supporting material was mixed with the MIL to overcome difficulties concerning the weighing of MIL and to control the uniform dispersion of the MIL, rendering the whole extraction procedure more reproducible. The pH-modulation during extraction step makes possible the one-pot extraction of SAs and TZs, from a single sample, in 15 min. Overall, the new analytical method developed enjoys the benefits of sensitivity (limits of quantification: 0.034–0.091 μg L-1) and precision (relative standard deviation: 5.2–8.1%), while good recoveries (i.e., 89–101%) were achieved from lake water and effluent from a municipal wastewater treatment plant. Owing to all of the above, the new procedure can be used to determine the concentrations of SAs and TZs at levels below the maximum residue limits.