Estrogens in river systems can significantly impact aquatic ecosystems. This study aimed to investigate the multiphase partitioning of estrogens in Wulo Creek, Taiwan, which receives animal feedlot wastewater, to understand their distribution and potential environmental implications. Water samples were separated into suspended particulate matter (SPM), colloidal, and soluble phases using centrifugation and cross-flow ultrafiltration. Concentrations of estrone (E1), 17β-estradiol (E2), and estriol (E3) in each phase were analyzed using LC/MS/MS. Partition coefficients were calculated to assess estrogen distribution among phases. Estrogens were predominantly found in the soluble phase (85.8-87.3%). The risk assessment of estrogen equivalent (EEQ) values suggests that estrogen concentration in water poses a higher risk compared to SPM, with a majority of the samples indicating a high risk to aquatic organisms. The colloidal phase contained 12.7-14.2% of estrogens. The log values (4.72-4.77 L/kg-C) were significantly higher than the log and log values (2.02-3.40 L/kg-C) for all estrogens. Colloids play a critical role in estrogen distribution in river systems, potentially influencing their fate, transport, and biotoxicity. This finding highlights the importance of considering colloidal interactions in assessing estrogen behavior in aquatic environments.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11436132 | PMC |
| http://dx.doi.org/10.3390/toxics12090671 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Metabolomic interpretation of bacterial and fungal contribution to per- and polyfluoroalkyl substances interface migration in waterlogged paddy fields.
Environ Pollut
December 2024
Key Laboratory of Poyang Lake Watershed Agricultural Resource and Ecology of Ministry of Agriculture and Rural Affairs, College of Land Resource and Environment, Jiangxi Agricultural University, Nanchang, 330045, China. Electronic address:
Article Synopsis
- PFAS are commonly found in paddy soils and their movement between water and soil is influenced by the soil's microbial communities.
- The study combined soil metabolomics with microbial sequencing and found that the metabolic activity of both bacteria and fungi significantly impacts PFAS transfer, with fungi playing a more crucial role.
- Specific amino acids like Tyrosine and Tryptophan were identified as key contributors to PFAS distribution, highlighting the need to understand microbial metabolites' roles in managing PFAS pollution in agricultural areas.
Chemical Composition of Secondary Organic Aerosol Formed from the Oxidation of Semivolatile Isoprene Epoxydiol Isomerization Products.
Environ Sci Technol
December 2024
Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.
3-Methylenebutane-1,2,4-triol and 3-methyltetrahydrofuran-2,4-diols, previously designated "C-alkene triols", were recently confirmed as in-particle isomerization products of isoprene-derived β-IEPOX isomers that are formed upon acid-driven uptake and partition back into the gas phase. In chamber experiments, we have systematically explored their gas phase oxidation by hydroxyl radical (OH) as a potential source of secondary organic aerosol (SOA). OH-initiated oxidation of both compounds in the presence of ammonium bisulfate aerosol resulted in substantial aerosol volume growth.
View Article and Find Full Text PDFStreamlining Linear Free Energy Relationships of Proteins through Dimensionality Analysis and Linear Modeling.
J Chem Inf Model
December 2024
Institute of Environmental Science and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), H-12, Islamabad 44000, Pakistan.
Article Synopsis
- Linear free energy relationships (LFERs) help predict how proteins interact with water, moving from simple models to a complex multi-parameter approach to improve accuracy.
- A new two-parameter LFER model simplifies the process by focusing on octanol-water and air-water partition coefficients, providing strong predictive results for protein-water interactions.
- This model shows comparable performance to traditional one-parameter models and offers a reliable alternative for estimating chemical behaviors when other descriptors are not accessible.
Positive Feedback between Partitioning of Carbonyl Compounds and Particulate Sulfur Formation during Haze Episodes.
Environ Sci Technol
December 2024
State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
Carbonyl compounds are important precursors of aqueous aerosols in the atmosphere, while their gas-particle partitioning behaviors and roles in particulate sulfur formation are poorly understood. In this study, we investigate the partitioning of five carbonyl compounds (formaldehyde, acetaldehyde, acetone, glyoxal, and methylglyoxal) during haze episodes in Beijing, China. On haze days, the values of field-derived effective Henry's law coefficients () on aerosols for these carbonyl compounds are 10-10 M atm, which are significantly higher (10-10 times) than those in pure water.
View Article and Find Full Text PDFKinetic multilayer models for surface chemistry in indoor environments.
Environ Sci Process Impacts
November 2024
Department of Chemistry, University of California, Irvine, CA92697, USA.
Multiphase interactions and chemical reactions at indoor surfaces are of particular importance due to their impact on air quality in indoor environments with high surface to volume ratios. Kinetic multilayer models are a powerful tool to simulate various gas-surface interactions including partitioning, diffusion and multiphase chemistry of indoor compounds by treating mass transport and chemical reactions in a number of model layers in the gas and condensed phases with a flux-based approach. We have developed a series of kinetic multilayer models that have been applied to describe multiphase chemistry and interactions indoors.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!