Impact of land use-induced soil heterogeneity on the adsorption of fluoroquinolone antibiotics, tested on organic matter pools
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View abstract on PubMed
Summary
This summary is machine-generated.Long-term land use alters soil organic matter pools, affecting fluoroquinolone antibiotic adsorption. Soils with a large, aliphatic-dominant slow organic matter pool show higher adsorption potential.
Area Of Science
- Environmental Chemistry
- Soil Science
- Environmental Science
Background
- Land use significantly impacts soil properties and the fate of contaminants.
- Fluoroquinolone antibiotics are widely detected environmental pollutants.
- Soil organic matter (SOM) plays a crucial role in the adsorption of organic pollutants.
Purpose Of The Study
- To investigate the influence of land-use-induced soil heterogeneity on fluoroquinolone antibiotic adsorption.
- To analyze the adsorption behavior of ciprofloxacin, norfloxacin, and ofloxacin in different soil organic matter pools.
- To understand the relationship between soil organic matter composition and antibiotic adsorption.
Main Methods
- Soils from three land use types (arable, grassland, forest) were analyzed.
- Soil organic matter was fractionated into fast (> 63 µm) and slow (< 63 µm) pools.
- Adsorption of three fluoroquinolone antibiotics was quantified for each fraction and bulk soil.
Main Results
- Land use effects on adsorption were only significant in the slow organic matter pool.
- Adsorption in the slow pool increased in the order: arable land < grassland < forest.
- Soil organic matter composition, particularly aliphatic dominance in the slow pool, enhanced micropollutant adsorption.
Conclusions
- The composition and proportion of soil organic matter pools, influenced by land use, are critical for fluoroquinolone adsorption.
- Management practices involving the release of contaminated materials should consider soil organic matter characteristics.
- Aliphatic-rich slow organic matter pools are key sites for antibiotic sequestration in soils.
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