Chemosphere最新文献

{"title":"An integrated experimental and modeling approach to understand pyromorphite solubility","authors":"Darren A. Chevis ,&nbsp;Yongshan Wan ,&nbsp;Kirk G. Scheckel","doi":"10.1016/j.chemosphere.2025.144694","DOIUrl":"10.1016/j.chemosphere.2025.144694","url":null,"abstract":"<div><div>The lead apatite mineral, pyromorphite (Pb₅(PO₄)₃Cl), has been of great interest due to its stable nature under most chemical conditions found in the environment; yet there are lingering questions about pyromorphite solubility needing to be successfully addressed to utilize this mineral in Pb remediation efforts. To address these gaps in our knowledge, we conducted a series of solubility experiments over the pH range of 2–10. A K_sp of 10^−79.58 is calculated for pyromorphite which is slightly higher than recent estimates of Ksp that range from ∼10⁻⁸⁰ to 10⁻⁸¹. FTIR analysis of the synthesized material in this study indicates that the higher K_sp is mainly caused by the lower degree of crystallinity due to the shorter aging period compared to previous studies (one week vs. 2 weeks to a month). Despite predicting Pb release accurately at acidic pH values, PHREEQC simulations of pyromorphite dissolution using the K_sp calculated at pH values between 6 and 8 predicts aqueous Pb concentrations approximately an order of magnitude less than observed in the batch experiments. When a second phase (PbCl₂) at 0.2–0.4 % percent weight is included in the dissolution simulations, PHREEQC accurately models the results of the experiments up to pH 8. These findings indicate that the presence of a more soluble Pb bearing phase at levels undetectable to techniques such as FTIR and XRD can have a notable effect on the effective solubility of pyromorphite. Furthermore, these findings suggest that the pH conditions during phosphate remediation need to be closely monitored to minimize more soluble Pb minerals from coprecipitating.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144694"},"PeriodicalIF":8.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First evidence of airborne microplastics in the sub-Antarctic Beagle Channel: Detection and characterization by infrared and Raman microspectroscopies","authors":"Lucas S. Rodríguez Pirani ,&nbsp;A. Lorena Picone ,&nbsp;Gabriel E. Silvestri ,&nbsp;Ana Laura Berman ,&nbsp;Giselle Marincovich ,&nbsp;Lino Condori ,&nbsp;Emiliano Petruzzi ,&nbsp;Gonzalo Gambarte ,&nbsp;Rosana M. Romano ,&nbsp;Alfredo J. Costa","doi":"10.1016/j.chemosphere.2025.144692","DOIUrl":"10.1016/j.chemosphere.2025.144692","url":null,"abstract":"<div><div>Microplastic pollution is increasingly recognized as a global environmental issue; however, atmospheric microplastic circulation remains poorly studied in sub-Antarctic regions, especially in southern South America. This study presents the first evidence of airborne microplastics in the sub-Antarctic Beagle Channel, based on passive sampling conducted on Isla Redonda, an uninhabited island near Ushuaia, Argentina. Passive samplers were employed over an 18-month period, allowing for continuous collection of atmospheric particles. Suspected anthropogenic particles were analyzed using FTIR and Raman microspectroscopies to determine polymer composition and associated additives. Fibers were the dominant particle type, accounting for over 80 % of the total. Semi-synthetic cotton, polyamide, polyester, and polyethylene were the most identified polymers. Raman analysis further revealed the presence of industrial pigments, including indigo, on both synthetic and semi-synthetic fibers. The predominance of textile-related polymers and dyes suggests a strong influence of long-range atmospheric transport, likely from southern South America, as well as potential local contributions from the nearby city of Ushuaia. These findings, along with the use of passive samplers, establish a crucial baseline for future atmospheric microplastic monitoring in high-latitude regions and underscore the strategic importance of including sub-Antarctic areas in global efforts to understand the dispersion pathways and environmental impacts of airborne microplastics.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144692"},"PeriodicalIF":8.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scientific considerations on the contribution “A comparative study on in-situ synthesis of two iron nanoparticles in acid mine drainage using green tea and Excoecaria cochinchinensis leaves extracts”","authors":"Luis F.O. Silva","doi":"10.1016/j.chemosphere.2025.144680","DOIUrl":"10.1016/j.chemosphere.2025.144680","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144680"},"PeriodicalIF":8.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145093069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methylparaben, as an environmental contaminant, compromises water disinfection under real conditions","authors":"Ana Rita Pereira ,&nbsp;Inês B. Gomes ,&nbsp;Manuel Simões","doi":"10.1016/j.chemosphere.2025.144685","DOIUrl":"10.1016/j.chemosphere.2025.144685","url":null,"abstract":"<div><div>Methylparaben (MP), a common preservative in products of daily use, has been detected in drinking water distribution systems (DWDS) due to its recalcitrance to conventional wastewater treatment processes. This study evaluates the effects of environmentally relevant MP exposure (15 μg/L) on dual-species biofilms formed by <em>Acinetobacter calcoaceticus</em> and <em>Stenotrophomonas maltophilia</em> and the implications for drinking water (DW) chlorination. Experiments were conducted under hydrodynamic conditions representative of real DWDS, using the multiple cylinders biofilm reactor (MCBR). MP exposure increased bacterial culturability by one log-fold (CFU/cm²) and reduced biofilm water content by 10 %. Significant decreases in extracellular polymeric substance (EPS) components - 44 % in polysaccharides and 55 % in protein - were observed for MP-exposed biofilms. Bacterial cells from biofilms exposed to MP showed increased tolerance to chlorination, even if these biofilms produced less EPS. Moreover, MP exposure led to higher post-disinfection survival of <em>A. calcoaceticus</em> and <em>S. maltophilia</em>, with 0.7-log increases in non-damaged cells. Furthermore, MP exposure significantly increased the release of non-damaged bacterial cells (by 1.33 log cells/mL) during free chlorine treatment at 5 mg/L and the number of viable but non-culturable (VBNC) cells by 3 log cells/mL under 50 mg/L of free chlorine exposure. This boosted presence of viable cells in the bulk water post-disinfection raises serious concerns about microbial persistence and the risk of downstream contamination in distributed DW, with potential public health implications.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144685"},"PeriodicalIF":8.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145093071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a selective and sensitive measurement method for permanganate and its first quantification under actual ozonation conditions","authors":"Kohei Kawaguchi,&nbsp;Taira Hidaka,&nbsp;Taku Fujiwara","doi":"10.1016/j.chemosphere.2025.144682","DOIUrl":"10.1016/j.chemosphere.2025.144682","url":null,"abstract":"<div><div>Environmental water typically contains manganese, and when treated with ozone (O₃), MnO₄⁻ is produced, sometimes turning the water pink. However, there has been no measurement method that could specifically detect only MnO₄⁻ with sufficient sensitivity. Furthermore, the MnO₄⁻ concentration during ozonation has never been reported. Therefore, as an initial step in this study, we developed a selective and sensitive method for quantifying MnO₄⁻, which is unaffected by other oxidizing agents (O₃, H₂O₂, HClO, HBrO, and Cr₂O₇²⁻) and has a 4 nM limit of quantification—eight times lower than that of existing methods. This method is based on the mechanism in which MnO₄⁻ reacts with <em>p</em>-vinylbenzoic acid to produce 4-(1,2-dihydroxyethyl)benzoic acid even in the presence of dissolved iodide ions, whereas other oxidizing agents are reduced by the iodide ions. Using the newly developed method, the concentration of MnO₄⁻ produced during the ozonation of river water was measured while varying the reaction conditions. Under all conditions, MnO₄⁻ was rapidly formed within 30 s after ozone addition and tended to remain present. This study provides a powerful tool for investigating manganese oxidation in ozonation and is expected to facilitate the identification of optimal conditions for efficient manganese removal.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144682"},"PeriodicalIF":8.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145088514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the dominant modes of formation and variability of potentially toxic element concentrations and their impact on environmental quality","authors":"Olha Biedunkova ,&nbsp;Pavlo Kuznietsov ,&nbsp;Oleg Mandryk","doi":"10.1016/j.chemosphere.2025.144688","DOIUrl":"10.1016/j.chemosphere.2025.144688","url":null,"abstract":"<div><div>The current research investigates the prevalent spatial distribution types of potentially toxic elements (PTE) - iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), lead (Pb), nickel (Ni), chromium (Cr), and cadmium (Cd) - and their effects on environmental quality and health risk assessment in the cooling water discharge of the nuclear power plant (NPP). A comprehensive geochemical and hydrological assessment was enabled by weekly sampling in 2023 at three strategic locations: pre-discharge (S1), post-discharge (S2) and directly at the cooling water discharge (S3) of the NPP. The investigation revealed that Fe (285.7 ± 44.5 μg/L) and Cu (84.3 ± 51.6 μg/L) had the highest concentrations, with Cu levels significantly increasing at S3 (166.65 ± 51.60 μg/L), likely due to corrosion processes in the NPP cooling system. Strong positive correlations were observed between Cu, total dissolved solids (TDS), and sulphates (SO₄), highlighting anthropogenic sources of pollution. Seasonal variations showed peaks for Zn and Cu during spring and autumn. Environmental quality was assessed using integral water quality pollution indices. Health risk assessment based on the Hazard Quotient for non-carcinogenic risks at location S3 showed local exceedances of the hazard quotient threshold values for Fe, Zn and Pb, but the overall risk level remained low, as evidenced by the values of the integral water quality indices. The application of the Bayesian Model Averaging technique has enabled the identification of pH, total suspended solids, and nutrients as the dominant predictors of PTE behaviour. These findings emphasize the non-radiological impacts of NPP discharges and underscore the necessity for integrated environmental and public health monitoring frameworks.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144688"},"PeriodicalIF":8.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145082659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Evaluation of the toxic and genotoxic effects of exposure of Drosophila melanogaster to the glutathione-capped AgIn5Se8@ZnS nanocrystals” [Chemosphere, (2025), vol. 381, pages 144482]","authors":"Antônio Marcos de Oliveira dos Santos ,&nbsp;Danilo Gustavo Rodrigues Silva ,&nbsp;Maria Gislaine Pereira ,&nbsp;Adrielle Rodrigues Costa ,&nbsp;Claudia Rohde ,&nbsp;Camila Caroline Lopes Arruda ,&nbsp;Antônia Eliene Duarte ,&nbsp;Lizandra Ferraz da Silva ,&nbsp;Denilson Vasconcelos Freitas ,&nbsp;Marcelo Navarro ,&nbsp;Maríndia Deprá ,&nbsp;Daniela Maria do Amaral Ferraz Navarro ,&nbsp;Vera Lúcia da Silva Valente","doi":"10.1016/j.chemosphere.2025.144675","DOIUrl":"10.1016/j.chemosphere.2025.144675","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"387 ","pages":"Article 144675"},"PeriodicalIF":8.1,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145071361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An analytical commentary on the research article “Foliar application of zinc oxide (ZnO) nanoparticles ameliorates growth, yield traits, osmolytes, cell viability, and antioxidant system of Brassica juncea (L.) Czern. grown in lead (Pb) stress”","authors":"Luis F.O. Silva","doi":"10.1016/j.chemosphere.2025.144679","DOIUrl":"10.1016/j.chemosphere.2025.144679","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144679"},"PeriodicalIF":8.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal analysis of particulate matter (PM10 and PM2.5) and health risks in Thailand's urban core","authors":"Jeevan Bhatta ,&nbsp;Orapin Laosee ,&nbsp;Piyapong Janmaimool ,&nbsp;Vladimir Strezov ,&nbsp;Cheerawit Rattanapan","doi":"10.1016/j.chemosphere.2025.144687","DOIUrl":"10.1016/j.chemosphere.2025.144687","url":null,"abstract":"<div><h3>Background</h3><div>Particulate matter (PM) exposure poses significant health risks in rapidly urbanizing Southeast Asian regions, yet comprehensive assessments integrating meteorological influences and age-specific health risks remain limited.</div></div><div><h3>Objectives</h3><div>This study evaluated spatiotemporal variations of PM_2.5 and PM₁₀ concentrations and associated non-carcinogenic health risks across Bangkok, Nonthaburi, and Samut Prakan, Thailand.</div></div><div><h3>Methods</h3><div>We analyzed five years (2020–2024) of daily PM data from government monitoring stations and meteorological variables using Generalized Additive Models (GAMs). Health risks were assessed using Hazard Quotient (HQ) and Hazard Index (HI) frameworks for three age groups: children (&lt;14 years), adults (15–64 years), and the elderly (≥65 years).</div></div><div><h3>Results</h3><div>Distinct seasonal patterns emerged with winter showing the highest pollution levels (PM_2.5: 32.4–33.4 μg/m³; PM₁₀: 56.6–61.7 μg/m³) compared to the rainy season (PM_2.5: 11.7–16.1 μg/m³; PM10: 24.1–31.4 μg/m³). GAM performance varied by province, with Nonthaburi showing the best model fit (PM_2.5: R² = 0.623; PM₁₀: R² = 0.679). All HI values exceeded safe thresholds (&gt;1), with adults showing the highest risks (winter HI: 9.05–9.28), followed by the elderly (6.79–6.96) and children (4.52–4.64). Spatial analysis revealed geographic heterogeneity with the highest health risks in Bangkok's central urban areas and Samut Prakan's industrial zones.</div></div><div><h3>Conclusions</h3><div>This study demonstrates consistently elevated health risks from PM exposure across all demographics and provinces, with pronounced seasonal variations driven by meteorological factors. Results support urgent implementation of targeted air quality management strategies, particularly during winter.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144687"},"PeriodicalIF":8.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fire on the ground: Wildfires impacts on soil health and biodiversity – A review","authors":"Lucas V. Sousa-Lima ,&nbsp;Enrico M. Saggioro ,&nbsp;Paulo R. Dorneles ,&nbsp;Cláudio E.T. Parente","doi":"10.1016/j.chemosphere.2025.144686","DOIUrl":"10.1016/j.chemosphere.2025.144686","url":null,"abstract":"<div><div>The increasing occurrence of fire events is of great concern, as these events promote intense changes in soil environments, altering their physico-chemical composition and severely damaging organisms through a wide range of effects. Therefore, this review aimed to understand the different types of effects promoted by fire events on the soil and its organisms. Bibliographic searches were performed on different platforms, which returned a total of 109 investigations, which were grouped into different thematic axes. Fires promote extensive changes in soil composition, including by decreasing nutrient concentrations. In addition, an increase in toxic substances, such as PAHs, heavy metals and contaminants resulting from water used to control fires, was identified. Few studies have been carried out with the aim of understanding the ecotoxicological effects of contaminants generated by fires, with the majority of studies involving leachate, observing mainly acute mortality effects. Most of the studies found focused on understanding changes at the ecological level, with a special focus on microorganisms and animals, with few studies on plants. This review highlights the urgent need for ecotoxicological studies on the effects of fire-derived contaminants, particularly on soil organisms. There is also a pressing need for more ecological studies that adopt an integrated approach, incorporating multiple soil-dwelling species from different taxonomic groups to better reflect the complexity of natural ecosystems.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"388 ","pages":"Article 144686"},"PeriodicalIF":8.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}