Abstract
The aim of this study was determination of the bioaccumulation capacity of tetracycline (TC) and the degradation products by Lemna gibba L. in the pilot-scale reactor that takes the effluent of a municipal wastewater treatment plant (Elazığ city, Turkey). For this aim, L. gibba L. which was exposed to secondary clarifier effluent of the treatment plant was harvested from the pilot-scale reactor. Then, the harvested L. gibba L. was extracted and passed from solid-phase extraction cartridge and TC, 4-epitetracycline (ETC), 4-epianhydrotetracycline (EATC), and anhydrotetracycline (ATC) concentrations were determined. Maximum TC, ETC, EATC, and ATC concentrations bioaccumulated by L. gibba L. were 123 ± 2.0, 129 ± 3.2, 42.7 ± 0.5, and 31.9±0.3 ppb, respectively while minimum TC, ETC, EATC, and ATC concentrations those bioaccumulated by L. gibba L. were determined as 99.7 ± 1.2, 111 ± 2.2, 12 ± 0.6, and 8.3±0.1 ppb, respectively. The order of the uptake rate of TC and the degradation products by L. gibba L. was determined as follows: ETC > TC > EATC > ATC.
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