Echeverria S.,Univesitat Rovira i Virgili |
Borrull F.,Univesitat Rovira i Virgili |
Pocurull E.,Univesitat Rovira i Virgili |
Fontanals N.,Univesitat Rovira i Virgili
Analytica Chimica Acta | Year: 2014
Pressurized liquid extraction (PLE) has been successfully applied for the first time to the extraction of five iodinated X-ray contrast media from sludge. Once optimized all PLE parameters, the extract has been analyzed by liquid chromatography-tandem mass spectrometry, being the method developed sensible enough to reach limit of quantifications (LOQs) of 25μgkg-1 (d.w.). The developed method has been applied to the analysis of sludge from urban sewage treatment plants and although some compounds such as iopromide, diatrizoic acid and iopamidol have been identified, their concentrations have been lower than their LOQs. © 2014 Elsevier B.V.