Fig. 4From: Analysis of opioids in postmortem urine samples by dispersive liquid-liquid microextraction and high performance liquid chromatography with photo diode array detectionChromatogram of blank postmortem urine sample (upper) and spiked postmortem urine sample with drugs (Lower, 1: morphine, 2: codeine, 3: methadone) and extracted under the optimum condition of dispersive liquid –liquid microextraction (DLLME). Spiked concentration, 10 μg ml− 1Back to article page