Application of three phase hollow fiber based liquid phase microextraction (HF-LPME) for the simultaneous HPLC determination of phenol substituting compounds (alkyl-, chloro- and nitrophenols)

► HF-LPME for the simultaneous extraction of substituting phenol compounds. ► Simultaneous extraction of alkyl-, chloro- and nitrophenols for first time. ► Complete study of experimental HF-LPME parameters. ► Excellent HPLC baselines even analyzing complex matrices. ► Application to the determination in urban wastewaters.