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[Analysis of Antibiotic Sources and Ecological Risk Assessment in Inland Rivers of Northwest China]
Yun-Zhou Tan1,2, Lei-Lei Lu2, Dan Qi2
1Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China.
Antibiotic contamination, particularly high levels of sulfadoxine, was found in northwest China's rivers Y and P. Aquaculture and sewage are primary sources, posing ecological risks and promoting antibiotic resistance.
Area of Science:
- Environmental Chemistry
- Water Quality Assessment
- Ecotoxicology
Context:
- Limited research exists on antibiotic contamination in arid inland rivers of northwest China.
- Rivers are crucial sources and sinks for antibiotics, impacting ecosystems.
- Water scarcity in the region exacerbates pollution concerns.
Purpose:
- To assess antibiotic contamination in the Y river and P tributary in northwest China.
- To identify the sources of antibiotic pollution using the positive matrix factorization (PMF) model.
- To evaluate the ecological risks associated with detected antibiotics.
Summary:
- High concentrations of sulfadoxine (SDX) were detected, alongside oxytetracycline (OXY) and sulfamonomethoxine (SMM).
- The PMF model identified aquaculture and domestic sewage as the main sources of antibiotic contamination.
- Ecological risk assessment indicated high risks from SDX, with potential for antibiotic resistance development.
Impact:
- Provides crucial data on antibiotic pollution in a data-scarce region.
- Highlights significant ecological risks and antibiotic resistance potential from specific contaminants.
- Offers a scientific basis for targeted pollution control and risk management strategies in inland river systems.
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