Fig. 4From: MgO-ZnO/carbon nanofiber nanocomposite as an adsorbent for ultrasound-assisted dispersive solid-phase microextraction of carbamazepine from wastewater prior to high-performance liquid chromatographic detectionSEM images of a CNFs, b MgO-ZnO, c MgO-ZnO@CNFs, and d EDX of MgO-ZnO@CNFs nanocompositeBack to article page