Publications by authors named "Mengya Luo"
Article Synopsis
- The study investigates how the antibiotic sulfamethoxazole (SMX) behaves in the hyporheic zone (HZ), where groundwater meets surface water, using advanced techniques to analyze chemical changes and predict SMX's reactive behavior.
- Results indicated that SMX hydrolyzed significantly (38.94%) when groundwater was recharged with surface water, influenced heavily by reactive hydroxyl radicals which are more prevalent in alkaline conditions.
- The research identifies several key processes—nitrification, hydroxylation, and polymerization—contributing to SMX's hydrolysis, highlighting that in the HZ, hydrolysis products are more plentiful and could provide insights for managing antibiotic pollution in aquatic environments.
Hydrolysis of norfloxacin in the hyporheic zone: kinetics and pathways.
Environ Sci Pollut Res Int
November 2022
Understanding the hydrolysis behavior and pathway of norfloxacin (NOR) in the hyporheic zone (HZ) is important for predicting its environmental persistence. Therefore, the effects of different environmental factors on NOR hydrolysis were investigated, and the hydrolysis pathway of NOR in the HZ was determined by DFT calculations and UPLC/TOF-MS. The hydrolysis process of NOR was consistent with the first-order kinetic.
View Article and Find Full Text PDFAdsorption Characteristics of Oxytetracycline by Different Fractions of the Organic Matter from Humus Soil: Insight from Internal Structure and Composition.
Int J Environ Res Public Health
February 2020
For minimizing the transport of antibiotics to groundwater, the migration of antibiotics in soils should be investigated. Soil organic matter can affect the migration of antibiotics. To date, the influence of aromatics and aliphatic content of organic matter on the adsorption of antibiotics has been controversial.
View Article and Find Full Text PDFTo reveal the adsorption mechanism of sediment to antibiotics with the presence of dissolved organic matter (DOM), batch experiments were carried out by oxytetracycline (OTC) on sediments with decayed plants (PDOM) and composted chicken manure (MDOM), and the zeta potential in the system before and after adsorption was measured. Results showed that the PDOM promoted the adsorption process, while the MDOM inhibited the adsorption. Adding PDOM, the change of zeta potential (Δζ) increased by 40.
View Article and Find Full Text PDF