Ranjbari E, Golbabanezhad-Azizi AA, Hadjmohammadi MR. Preconcentration of trace amounts of methadone in human urine, plasma, saliva and sweat samples using dispersive liquid-liquid microextraction followed by high performance liquid chromatography. Talanta. 2012 May 30;94():116–22. doi: 10.1016/j.talanta.2012.03.004. PMID: 22608423.
Preconcentration of trace amounts of methadone in human urine, plasma, saliva and sweat samples using dispersive liquid–liquid microextraction followed by high performance liquid chromatography