Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 753, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2020.141975
Keywords
Tetracycline antibiotics; Environmental occurrence; Fate; Toxicity; Risk assessment
Categories
Funding
- National Key Research and Development Program of China [2019YFC1604802, 2018YFC1801600]
- National Natural Science Foundation of China [21677167, 21806172]
- Thousand Young Talents Program of China
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Tetracyclines, widely used as antibiotics, are excreted in large quantities into the environment, causing adverse effects on both ecological systems and human health. This article summarizes the environmental occurrence and behaviors of tetracyclines in aquatic environments, as well as their toxicities and potential risks.
Tetracyclines (TCs), used as human and veterinary medicines, are the most widely used antibiotics. More than 75% of TCs are excreted in an active form and released into the environment through human and animal urine and feces, causing adverse effects on the ecological system and human health. Few articles review the environmental occurrence and behaviors of TCs, as well as their risks and toxicities. Here, we comprehensively summarized the recent advances on the following important issues: (1) Environmental occurrence of TCs. TCs are used globally and their occurrence in the aquatic environment has been documented, including surface water, ground-water, drinking water, wastewater, sediment, and sludge. (2) Environmental behaviors of TCs, particularly the fate of TCs in wastewater treatment plants (WWTPs). Most WWTPs cannot effectively remove TCs from wastewater, so alternative methods for efficient removal of TCs need to be developed. The latest degradation methods of TCs are summarized, including adsorption, photocatalytic, photochemical and electrochemical, and biological degradations. (3) Toxicities and possible risks of TCs. The toxicological data of TCs indicate that several TCs are more toxic to algae than fish and daphnia. Risk assessments based on individual compound exposure indicate that the risks arising from the current concentrations of TCs in the aquatic environment cannot be ignored. (c) 2020 Elsevier B.V. All rights reserved.
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