The 10 µm polystyrene and polyethylene-terephthalate microplastics (MPs), prevalent in finished drink water, were employed to investigate the effect of normal dosage UVC-based advanced-oxidation-processes (UVC-AOPs) on the interaction between MPs and their derived disinfection-byproducts (DBPs) during subsequent chlorination-disinfection, in the presence of Br, for the first time. The results indicated that UVC/HO caused higher leaching of microplastic-derived dissolved-organic-matter (MP-DOM), with smaller and narrower molecular-weight-distribution than UVC and UVC/peroxymonosulfate (UVC/PMS). The trihalomethanes (as dominant DBPs) molar-formation-potentials (THMs-MFPs) for MP-DOM leached in different UVC-AOPs followed the order of UVC/HO>UVC/PMS>UVC. The adsorption of formed THMs, especially Br-THMs, back on MPs was observed in all MPs suspensions with or without UVC-AOPs pre-treatment. The Cl-THMs adsorption by MPs is more sensitive to UVC-AOPs than Br-THMs. The adsorption experiments showed that UVC-AOPs reduce the capacity but increase the rate of THMs adsorption by MPs, suggesting the halogen and hydrogen bonding forces governed the THMs adsorption rate while hydrophobic interaction determines their adsorption capacity. The UVC-AOPs pre-treatment sharply increased the total yield of THMs via both indirectly inducing MP-DOM leaching and directly increasing the THMs-MFPs of MPs by oxidation. 21.36-41.96% of formed THMs adsorbed back on the UVC-AOPs-pretreated MPs, which might increase the toxicity of MPs.
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http://dx.doi.org/10.1016/j.jhazmat.2024.134597 | DOI Listing |
Med Mycol
December 2024
UR 3738 - CICLY - Equipe Inflammation et immunité de l'épithélium respiratoire, Faculté de Médecine Lyon-Sud Charles Mérieux, Université Claude Bernard Lyon 1, Lyon, France.
Cryptococcus neoformans/gattii and Histoplasma capsulatum var. capsulatum may present atypical histopathological features inducing diagnostic errors. We aimed to estimate the frequency of these atypical features on formalin-fixed tissue samples (FT) and to assess the relevance of an integrated histomolecular diagnosis using specific Histoplasma capsulatum PCR and panfungal PCR followed by Sanger sequencing and/or targeted-massive parallel sequencing (MPS).
View Article and Find Full Text PDFJ Nutr
December 2024
Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands.
Background: Plant-based foods have reduced protein digestibility and frequently display unbalanced amino acid profiles. Plant-based foods are therefore considered inferior to animal-based foods in their anabolic potential. No study has assessed the anabolic potential of a vegan diet that provides a large variety of plant-based protein sources in older adults.
View Article and Find Full Text PDFInt Immunopharmacol
December 2024
Department of Allergology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China; Department of Allergy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China. Electronic address:
Background: Environmental pollutants have been found to contribute to the development and acute exacerbation of asthma. Microplastics (MPs) have received widespread attention as an emerging global pollutant. Airborne MPs can cause various adverse health effects.
View Article and Find Full Text PDFJ Environ Manage
December 2024
College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, Beijing, 100193, China; State Key Laboratory of Nutrient Use and Management, Beijing, 100193, China; Key Laboratory of Plant-Soil Interactions, Ministry of Education, Beijing, 100193, China. Electronic address:
The high global production combined with low recycling rates of polystyrene (PS) and low-density polyethylene (LDPE) contributes to the abundance of these commonly used plastics in soil, including as microplastics (MPs). However, the combined effects of MPs and heavy metals, such as arsenic (As) on earthworms are poorly understood. Here, we show that neither PS nor LDPE altered the effects of As on the survival, growth, and reproduction of the earthworm Eisenia fetida.
View Article and Find Full Text PDFJ Contam Hydrol
December 2024
Department of Zoology, Central University of Jammu, Jammu & Kashmir 181143, India. Electronic address:
Microplastics (MPs) are ubiquitous and are increasing globally, but there is limited information available on their presence in freshwater ecosystems. This research work aims to investigate the abundance, sinking behavior, and risk assessment of MPs in the freshwater River Basantar, Jammu & Kashmir, India. Microplastic abundance in sediments was recorded in the range of 1-6 items g, with a mean abundance of 3 ± 1.
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