A1 Journal article (refereed)
Occurrence of antibiotics and risk of antibiotic resistance evolution in selected Kenyan wastewaters, surface waters and sediments (2020)
Kairigo, P., Ngumba, E., Sundberg, L.-R., Gachanja, A., & Tuhkanen, T. (2020). Occurrence of antibiotics and risk of antibiotic resistance evolution in selected Kenyan wastewaters, surface waters and sediments. Science of the Total Environment, 720, Article 137580. https://doi.org/10.1016/j.scitotenv.2020.137580
JYU authors or editors
Publication details
All authors or editors: Kairigo, Pius; Ngumba, Elijah; Sundberg, Lotta-Riina; Gachanja, Anthony; Tuhkanen, Tuula
Journal or series: Science of the Total Environment
ISSN: 0048-9697
eISSN: 1879-1026
Publication year: 2020
Volume: 720
Article number: 137580
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.scitotenv.2020.137580
Publication open access: Not open
Publication channel open access:
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/69194
Abstract
Active pharmaceutical ingredients, especially antibiotics, are micropollutants whose continuous flow into hydrological cycles has the potential to mediate antibiotic resistance in the environment and cause toxicity to sensitive organisms. Here, we investigated the levels of selected antibiotics in four wastewater treatment plants and the receiving water bodies. The measured environmental concentrations were compared with the proposed compound-specific predicted no-effect concentration for resistance selection values. The concentration of doxycycline, amoxicillin, sulfamethoxazole, trimethoprim, ciprofloxacin and norfloxacin within the influents, effluents, surface waters and river sediments ranged between 0.2 and 49.3 μgL−1, 0.1 to 21.4 μgL−1; ˂ 0.1 and 56.6 μgL−1; and 1.8 and 47.4 μgkg−1, respectively. Compared to the effluent concentrations, the surface waters upstream and downstream one of the four studied treatment plants showed two to five times higher concentrations of ciprofloxacin, norfloxacin and sulfamethoxazole. The risk quotient for bacterial resistance selection in effluent and surface water ranged between ˂0.1 and 53, indicating a medium to high risk of antibiotic resistance developing within the study areas. Therefore, risk mitigation and prevention strategies are a matter of priority in the affected areas.
Keywords: sewage; surface water; water pollution; wastewater load; medicinal substances; antibiotics; concentration (chemical properties); antibiotic resistance
Free keywords: antibiotics; wastewater; antimicrobial resistance; antibiotic resistance evolution; risk assessment
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Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 2
- Environmental Science (Department of Biological and Environmental Science BIOENV) YMP
- Cell and Molecular Biology (Department of Biological and Environmental Science BIOENV) SMB
- Nanoscience Center (Department of Physics PHYS, JYFL) (Faculty of Mathematics and Science) (Department of Chemistry CHEM) (Department of Biological and Environmental Science BIOENV) NSC