Persistence and migration of tetracycline, sulfonamide, fluoroquinolone, and macrolide antibiotics in streams using a simulated hydrodynamic system

Liu, Xiaowei; Lv, Kai; Deng, Chengxun; Yu, Zhimin; Shi, Jianghong; Johnson, Andrew C. ORCID: https://orcid.org/0000-0003-1570-3764. 2019 Persistence and migration of tetracycline, sulfonamide, fluoroquinolone, and macrolide antibiotics in streams using a simulated hydrodynamic system. Environmental Pollution, 252 (B). 1532-1538. https://doi.org/10.1016/j.envpol.2019.06.095

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Official URL: http://dx.doi.org/10.1016/j.envpol.2019.06.095

Abstract/Summary

The potential persistence and migration of 14 antibiotics comprising sulfonamides, fluoroquinolones, macrolides and tetracyclines were conducted using a 50-d recirculating flume study supported by batch attenuation experiments with spiked concentrations. The study demonstrated that photodegradation was the dominant attenuation process for these antibiotics in the water environment. The half-lives of 2–26 d were in order of sulfadiazine  >  sulfadimethoxine  >  sulfamerazine  >  sulfamethoxazole  >  sulfamethazine  >  sulfathiazole  >  ofloxacin  >  enrofloxacin  >  norfloxacin  >  ciprofloxacin  >  erythromycin  >  tetracycline  >  roxithromycin  >  oxytetracycline. These modest half-lives meant that the antibiotics were predicted to travel 30–400 km down a typical river before half the concentration would be lost. All antibiotics were detected on the surface sediment in the flume study. Under hyporheic exchange, some of them continually migrated into the deeper sediment and also the sediment pore water. All fluoroquinolones were detected in the sediments. The sulfonamides were detected in the pore water with relatively high concentrations and frequencies. Sulfadiazine, sulfamethazine and sulfathiazole in the upper layer pore water were found to be approaching equilibrium with the surface water. The high presence of sulfonamides in the pore water indicated that their high mobility and persistence potentially pose a risk to hyporheic zone.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.envpol.2019.06.095
UKCEH and CEH Sections/Science Areas:	Pollution (Science Area 2017-)
ISSN:	0269-7491
Additional Keywords:	attenuation, hyporheic exchange, conservative tracer, water-sediment system; flume experiment
NORA Subject Terms:	Ecology and Environment
Date made live:	29 Jul 2019 11:03 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/524548

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.envpol.2019.06.095

UKCEH and CEH Sections/Science Areas:

Pollution (Science Area 2017-)

ISSN:

0269-7491

Additional Keywords:

attenuation, hyporheic exchange, conservative tracer, water-sediment system; flume experiment

NORA Subject Terms:

Ecology and Environment