Abstract
Role of organic matter, clay, and iron contents in the sorption of oxytetracycline on river sediments
Highlights
The production and use of drugs are increasing worldwide
Organic Matter Characterization Sediment samples were analyzed with pyrolysis GC-Ms to identify and quantify organic compounds
Three categories of organic materials were identified in the pyrolyzed samples: petroleum hydrocarbons, anthropogenic materials, and plant residual materials [26]
Summary
The production and use of drugs are increasing worldwide. Antibiotics are among the most common medications used for human and veterinary treatments. The use of clay in sorption studies has provided useful insights into the fate of antibiotics in river sediment systems. The texture, clay, extractable iron, and organic matter contents of the sediments were determined. The sorption capacity values of the sediments were correlated with clay content, organic matter content, and available iron. A poor correlation was found between adsorption capacity and clay content in the presence of organic matter and iron. A relatively strong correlation was found between adsorption capacity with the iron, R2 = 0.7499, and organic matter contents of the sediments, R2 = 0.7899. Clay, and iron contents in the sorption of oxytetracycline on river sediments.
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