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Table 4 Recoveries of CBZ from wastewater samples spiked at two levels (100 ng mL−1 and 500 ng mL−1) using the proposed UA-DSPME/HPLC-DAD method, n = 3

From: 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 detection

Sample Added (ng mL−1) Found (ng mL−1) Recovery
Effluent 1 0 574 ± 8
100 674 99.7
500 1083 ± 15 102
Influent 1 0 836 ± 8  
100 934 ± 12 97.8
500 1430 ± 18 99.1