Chemosphere最新文献

{"title":"Degradation of bisphenols, halogenated flame retardants, and pesticides in wastewater and biosolids samples during frozen storage","authors":"Sarah B. Gewurtz,&nbsp;M. Coreen Hamilton,&nbsp;Steven Teslic,&nbsp;Shirley Anne Smyth","doi":"10.1016/j.chemosphere.2026.145117","DOIUrl":"10.1016/j.chemosphere.2026.145117","url":null,"abstract":"<div><div>Wastewater and biosolids are important pathways of chemicals to the environment and thus are often included in monitoring programs. Wastewater samples are often stored frozen when insufficient resources prevent immediate analysis or when samples are included as part of environmental specimen banks. However, the stability of chemical substances in frozen samples is not well known. The objective of this study was to evaluate the stability over a one-year period of three substance groups: bisphenols, halogenated flame retardants (HFRs), and pesticides in frozen (−20 °C) wastewater media. Influent, effluent, and biosolids samples were collected from two wastewater treatment plants (WWTPs) and target analytes were spiked into each sample. Three influent, effluent, and biosolids samples from both WWTPs were immediately chemically analyzed and triplicate influent, effluent, and biosolids samples from both WWTPs were analyzed after approximately 30-70, 180, and 365 days of frozen storage. The bisphenols (except bisphenol E), all but one HFR (pentabromobenzyl bromide), and pesticides in the organochlorine, organonitrogen, and pyrethroid groups were highly or moderately stable during frozen storage. Although most organophosphates and triazines were also highly or moderately stable, there were seven analytes in these pesticide groups, namely chlorpyriphos-oxon, diazinon-oxon, disulfoton sulfone, malathion, phosmet, ametryn, and metribuzin that were not stable. Consistent differences in chemical stability were not observed between the different wastewater matrices or time frozen. This study indicates that wastewater and biosolids samples can be stored frozen with confidence that concentrations of bisphenols, HFRs, and pesticides are not affected by chemical transformation, with a few exceptions.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"413 ","pages":"Article 145117"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149120225","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":"Evaluating operational efficiency and hydrogen sulfide mitigation in fluidized bed co-gasification of sewage sludge","authors":"Thi Ngoc Lan Thao Ngo,&nbsp;Khoa Doan Nguyen Dang,&nbsp;My Ha Pham","doi":"10.1016/j.chemosphere.2026.145106","DOIUrl":"10.1016/j.chemosphere.2026.145106","url":null,"abstract":"<div><div>This study investigated the operational efficiency and <em>in situ</em> H₂S mitigation of municipal sludge (MS) co-gasification with drinking water treatment sludge (DWTS) in a lab-scale fluidized-bed reactor. Gasification experiments were performed at 700–900 °C, ER 0.2–0.4, and 10–20 wt% DWTS addition. Increasing temperature and DWTS ratio enhanced syngas production and reduced tar yield. The highest syngas yield for MS alone was 79.10% at 900 °C and ER = 0.2, while co-gasification with 20 wt% DWTS increased syngas yield to 87.12% and reduced both heavy and light tars substantially. Under the same conditions, DWTS achieved a maximum H₂S removal efficiency of 70.08%, attributed to the reaction of iron oxides in DWTS with H₂S to form stable iron sulfides. XRD analysis and thermodynamic modeling confirmed that sulfur capture shifted toward phases ZnAl₂S₄, FeS, MnS, K₂S, CaS, and Al₂S₃ as DWTS loading increased. These results demonstrated that DWTS is a promising waste-derived catalyst for improving gasification performance and reducing sulfur emissions in sludge-to-energy systems.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"412 ","pages":"Article 145106"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149076940","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":"Valorisation of waste polyethylene sachets into low-cost reusable oil sorbents: Mechanical modification, process optimisation and techno-economic assessment","authors":"Mary-Joan Oledibe,&nbsp;Francis Clegg,&nbsp;Chris Sammon,&nbsp;Hassan Majiya","doi":"10.1016/j.chemosphere.2026.145111","DOIUrl":"10.1016/j.chemosphere.2026.145111","url":null,"abstract":"<div><div>Crude oil spills remain a persistent global environmental challenge, while polyethylene (PE) waste continues to accumulate, particularly in low-resource settings. This study develops a circular-economy approach that directly addresses both issues through the valorisation of post-consumer PE water sachets into effective, low-cost sorbents for oil spill remediation. Waste PE was mechanically processed and modified via NaCl-assisted abrasion to produce shredded polyethylene (S-PE) and surface-roughened polyethylene (SR-PE).</div><div>Characterisation by scanning electron microscopy (SEM) confirmed increased surface roughness and microcavity formation, while Fourier-transform infrared spectroscopy (FTIR) indicated minor surface oxidation following abrasion.</div><div>Response surface methodology and I-optimal design were used to evaluate the effects of sorbent type, particle size, sorbent dose, and oil loading. Sorbent morphology was the dominant performance factor, with SR-PE achieving oil uptake capacities of approximately 8 g/g for synthetic crude oil and 5.9 g/g for natural crude oil under optimised conditions using a 5 min operational contact time. Natural crude oil adsorption showed reduced sensitivity to operating conditions, indicating robust performance across the investigated conditions.</div><div>Regeneration studies showed an initial decline followed by stabilisation of adsorption capacity, demonstrating sustained multi-cycle performance. A techno-economic assessment based on stabilised reuse performance estimated lifecycle oil-removal costs of 0.042–0.130 USD/kg oil, lower than representative literature-based estimates for commercial polypropylene sorbents. Overall, the integration of simple material modification, statistical optimisation, regeneration, and economic assessment demonstrates the potential of recycled PE as a reusable, low-cost sorbent for oil spill remediation.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"413 ","pages":"Article 145111"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149186907","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":"A critical review on synergistic toxicity: Plastics as “Trojan-Horses” for mercury biomagnification in polar avian predators","authors":"Meesala Krishna Murthy","doi":"10.1016/j.chemosphere.2026.145116","DOIUrl":"10.1016/j.chemosphere.2026.145116","url":null,"abstract":"<div><div>Long-range transport of mercury (Hg) pollution and bioaccumulating microplastics (MPs) is a severe issue, and polar environments are continuously changing. To critically discuss the hypothesis of the “Trojan-Horse,” in which MPs might be carriers of increased Hg bioavailability and/or biomagnification in the polar bird food web. It integrates information on MP contamination in Arctic and Antarctic environments, the transport of Hg via Arctic and Antarctic food chains, and the interactions between MP and Hg toxicity. Laboratory studies have shown that UV-aged MPs can significantly increase Hg bioaccumulation (up to 1.61-fold), oxidative stress, neurotoxicity, and multigenerational reproductive toxicity. Polar seabirds have also been reported to have a high MPs ingestion frequency (FO: 15-93%) and biomagnification of Hg (2.3-8.6). Field studies have provided evidence of a link between MP ingestion and an increase in the Hg burden, which is somewhat contradictory to laboratory studies. Nanoplastics (NPs) may be an underestimated vector because of their high surface area-to-volume ratio and membrane-penetrating ability. Foraging/hunting ecology, foraging level, and migration result in varying vulnerabilities among albatrosses, petrels, fulmars, skua, and penguins. Some of the key gaps are limited in-field validation, seasonal plastic and Hg transfer processes, variable co-contaminant monitoring, and a lack of predictive models of plastic-Hg trophic interactions.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"413 ","pages":"Article 145116"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149078718","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":"Dual-metal phytoremediation of cadmium and nickel by wetland macrophytes: Comparative evaluation, metal uptake dynamics, and process optimization","authors":"Rosemary Odo Okorie,&nbsp;Fidelis Odedishemi Ajibade,&nbsp;Temitope Fausat Ajibade,&nbsp;Oluseye Gbadebo Olasunkanmi,&nbsp;James Rotimi Adewumi,&nbsp;Christopher Oluwakunmi Akinbile","doi":"10.1016/j.chemosphere.2026.145101","DOIUrl":"10.1016/j.chemosphere.2026.145101","url":null,"abstract":"<div><div>Escalating heavy metal contamination of aquatic environments presents a significant threat to ecosystem integrity and public health, yet existing treatment technologies remain economically and technically inadequate for the efficient removal of low-concentration metal pollutants from wastewater. This study evaluated the phytoremediation potential of two macrophytes, <em>Hymenachne amplexicaulis</em> (Olive Hymenachne) and <em>Pogonatherum paniceum</em> (Bamboo Grass), for the removal of cadmium (Cd) and nickel (Ni) from synthetic wastewater under hydroponic conditions. Experiments were conducted over 21 days under single and combined metal exposures at low Cd concentrations of 0.5-1.0 mg/L and Ni concentrations of 2.0-5.0 mg/L. Physicochemical parameters were monitored to assess rhizosphere interactions, while phytoremediation performance was evaluated using removal efficiency and phytoextraction indices. Response Surface Methodology (RSM) was applied for system optimization. Results showed that planted systems significantly outperformed unplanted controls, which achieved less than 18% metal removal. <em>H. amplexicaulis</em> recorded the highest Cd removal efficiency (93%) at 0.5 mg/L and demonstrated strong bioaccumulation capacity, with bioaccumulation factor (BAF) values up to 89.63. However, it exhibited greater biomass reduction under combined metal stress, indicating greater sensitivity to co-contamination under the tested conditions. In contrast, <em>P. paniceum</em> achieved maximum Ni removal of 60.8% at 2.0 mg/L and maintained greater biomass stability under combined exposure, with BAF values ranging from 1.62 to 35.71. Translocation factor analysis indicated stronger root retention in <em>H. amplexicaulis</em> and more balanced internal metal distribution in <em>P. paniceum</em>. RSM identified exposure time as the most influential factor affecting metal removal efficiency, and the developed models demonstrated strong predictive performance for process optimization.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"412 ","pages":"Article 145101"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149076948","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":"Erratum to ‘Predicting trace organic compound attenuation with spectroscopic parameters in powdered activated carbon processes’ [Chemosphere 156 (2016) 163–171]","authors":"Austin D. Ziska,&nbsp;Minkyu Park,&nbsp;Tarun Anumol,&nbsp;Shane A. Snyder","doi":"10.1016/j.chemosphere.2026.145096","DOIUrl":"10.1016/j.chemosphere.2026.145096","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"412 ","pages":"Article 145096"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149076937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to ‘Effect of particle size of nanoscale zero–valent copper on inorganic phosphorus adsorption–desorption in a volcanic ash soil’ [Chemosphere 340 (2023) 139836]","authors":"Jonathan Suazo-Hernández,&nbsp;Cristian Urdiales,&nbsp;Patricia Poblete-Grant,&nbsp;Hector Pesenti,&nbsp;Lizethly Cáceres-Jensen,&nbsp;Binoy Sarkar,&nbsp;Nanthi Bolan,&nbsp;María de la Luz Mora","doi":"10.1016/j.chemosphere.2026.145082","DOIUrl":"10.1016/j.chemosphere.2026.145082","url":null,"abstract":"","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"412 ","pages":"Article 145082"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149019200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Airborne microplastics and associated heavy metal contamination in indoor and outdoor environments: Pollution levels and health risks in Metro Manila, Philippines","authors":"Jade Rae B. Ministerio,&nbsp;Rodolfo A. Romarate II,&nbsp;Najiha B. Amer,&nbsp;Shinji Takahashi,&nbsp;Chihiro Inoue,&nbsp;Mei-Fang Chien,&nbsp;Kozo Watanabe,&nbsp;Hernando P. Bacosa","doi":"10.1016/j.chemosphere.2026.145121","DOIUrl":"10.1016/j.chemosphere.2026.145121","url":null,"abstract":"<div><div>Airborne microplastics (MPs) have emerged as environmental pollutants that can co-occur with hazardous contaminants; however, evidence of heavy-metal associations with atmospheric MPs remains limited. This study investigated the abundance, characteristics, metal loadings, and health risks of airborne MPs in Metro Manila, Philippines. Air samples were collected from classroom, laboratory, dining room, office, living room, and store environments, followed by polymer identification via μFTIR and metal quantification using ICP–MS. MP concentrations ranged from 0.074 to 0.595 MP/m³ indoors (mean: 0.297 ± 0.20 MP/m³) and from 0.057 to 0.262 MP/m³ outdoors (mean: 0.173 ± 0.07 MP/m³), with no statistically significant difference. Fibers dominated the MP assemblage (52.38%), followed by fragments and films. PP, PET, and PE were the most prevalent polymers. Heavy metal concentrations ranged from 0.35 to 27521.66 mg/kg indoors and from 0.11 to 30556 mg/kg outdoors, with notable contributions from Zn, Cu, Ba, Pb, and Ag. These showed site-specific variations associated with room function and anthropogenic activity, with elevated Cu and Zn in high-activity indoor spaces. Pollution indices (PLI, MPI) indicated moderate pollution levels, while the ecological risk index indicated moderate ecological risk. Spearman analysis showed strong positive correlations between MPI-HM and As, Fe, and Zn (r = 0.70, p &lt; 0.05), while PCA and HCA differentiated sampling sites by metal- and MP-related profiles. Inhalation risk assessment indicated low-to-moderate non-carcinogenic risk; however, the co-occurrence of toxic metals with respirable MPs highlights the occurrence of hazardous substances within the recovered airborne MP fraction. This study provides one of the first assessments of heavy metals associated with airborne MPs in indoor–outdoor urban environments.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"413 ","pages":"Article 145121"},"PeriodicalIF":8.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149186888","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":"Phthalate exposure and osteoporosis: NHANES associations and integrative in silico prioritization of candidate molecular targets","authors":"Jie Jiang,&nbsp;Guanhou Chen,&nbsp;Xin Li,&nbsp;Ran Yan,&nbsp;Shuai Li","doi":"10.1016/j.chemosphere.2026.145085","DOIUrl":"10.1016/j.chemosphere.2026.145085","url":null,"abstract":"<div><h3>Background</h3><div>Phthalates are ubiquitous endocrine-disrupting chemicals, but population-level evidence linking urinary phthalate burden with osteoporosis and the molecular context of these associations remains incomplete.</div></div><div><h3>Methods</h3><div>We analyzed 8273 participants from the 2003–2010 National Health and Nutrition Examination Survey and integrated exposure–outcome modeling with public transcriptomics, target prediction, weighted gene co-expression network analysis, machine learning, immune-infiltration analysis, single-cell transcriptomics, cell–cell communication, pseudotime analysis, pathway scoring, and molecular docking.</div></div><div><h3>Results</h3><div>Among 8273 participants, 939 met the osteoporosis definition. In the fully adjusted model, the standardized overall phthalate exposure index was associated with higher odds of osteoporosis (OR 1.38, 95% CI 1.28–1.48; P &lt; 0.001). Weighted osteoporosis prevalence increased from 8.7% in the lowest exposure quartile to 16.4% in the highest, and higher exposure was also associated with lower femoral-neck and lumbar-spine bone mineral density. Integrative computational analyses prioritized CXCR4, CEBPB, CD44, YAP1, SPP1, IL6, and MMP9 within inflammation, osteoclast differentiation, and extracellular-matrix pathways. Immune and single-cell analyses localized these candidate targets to osteoporosis-associated macrophage, osteoclast, osteoblast, endothelial, and stromal states. Docking predicted favorable structural compatibility for MEHP–CXCR4 (−8.6 kcal/mol), MBP–CEBPB (−7.9 kcal/mol), and MECPP–YAP1 (−7.4 kcal/mol).</div></div><div><h3>Conclusion</h3><div>Higher urinary phthalate burden was associated with osteoporosis-related outcomes, while integrative in silico analyses prioritized candidate molecular and cellular contexts for future experimental testing. These findings do not establish a phthalate-induced causal mechanism.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145085"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148922100","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":"Radiological, chemical, and microbiological risks in drinking water from the Brazilian semiarid: Public health implications","authors":"Marvic Ortueta Milan,&nbsp;Zahily Herrero Fernández,&nbsp;José Araújo dos Santos Júnior,&nbsp;Romilton dos Santos Amaral,&nbsp;Lino Angel Valcárcel Rojas,&nbsp;Artur Paiva Coutinho,&nbsp;Taiwo Saheed Yinusa,&nbsp;Robert Fernandes de Melo,&nbsp;Josineide Marques do Nascimento Santos,&nbsp;Mariana Brayner Cavalcanti Freire Bezerra,&nbsp;Leorlen Yunier Rojas Mazaira,&nbsp;Yelina Gonzáles Pérez,&nbsp;Yasmin Marques dos Santos","doi":"10.1016/j.chemosphere.2026.145089","DOIUrl":"10.1016/j.chemosphere.2026.145089","url":null,"abstract":"<div><div>This study presents a regional survey of treated and untreated water sources in the Seridó Ocidental region of Paraíba, Brazil. A single-sampling campaign was conducted to evaluate chemical, microbiological, and radiological parameters against national standards. High concentrations of sodium (up to 5000 mg L⁻¹), chloride (up to 1579 mg L⁻¹), calcium (up to 105 mg L⁻¹), and magnesium (up to 124 mg L⁻¹) were observed, exceeding recommended limits and affecting taste and hardness. Turbidity in untreated water reached up to 105 NTU, about 20 times the permissible limit. Nitrate levels reached 34 mg N-NO₃^- L⁻¹ (26% non-compliance), and lead concentrations up to 0.026 mg L⁻¹ were found, both exceeding regulatory limits. Activity concentrations of ²²⁶Ra (up to 1.28 Bq L⁻¹) and ²²⁸Ra (up to 1.20 Bq L⁻¹) in some untreated sources also exceeded standards, associated with local geochemical conditions such as uranium- and thorium-rich minerals and high salinity. Calculated annual effective doses for children aged 1 to 10 years exceeded the WHO reference value of 0.1 mSv in several cases, indicating a need for further assessment and management. These results highlight the need for continuous monitoring and targeted interventions to ensure safe water in vulnerable semi-arid regions.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"411 ","pages":"Article 145089"},"PeriodicalIF":8.1,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148914724","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}