Chemosphere最新文献

{"title":"Generation of disinfection byproducts by graphene quantum dot: Graphene nanostructures and water chemistry.","authors":"Min Zhang, Shasha Zhao, Bingqing Yu, Xuhua Cheng, Manhong Miao, Fang Wang, Yao Li","doi":"10.1016/j.chemosphere.2024.143985","DOIUrl":"10.1016/j.chemosphere.2024.143985","url":null,"abstract":"<p><p>Graphene quantum dot (GQD), as one of the smallest graphene nanomaterials (GNMs), has the potential to be widely used due to its excellent fluorescence properties, hydrophilicity, and good biocompatibility. GQD remaining in water will generate DBPs when entering the disinfection process, and whether the generation mechanism and influencing factors are similar to those of other GNMs has not been proven and thoroughly investigated. In this study, the total amount, effect, and mechanism of DBPs formation from GQD chlorination were investigated and compared with graphene oxide (GO) and graphene. The results show that GQD produced a total trichloromethane (TCM) amount of 1019.6 μg/L, which is significantly higher than that produced by GO (99.2 μg/L) and graphene (7.0 μg/L) at a concentration of 500 mg/L. The key factors are abundant functional groups and strong hydrophilicity of GQD after the characterization and comparison of physicochemical properties. Different water chemistry conditions influence DBPs formation, such as Br^- increased the formation of brominated DBPs, and high pH led to a decrease in TCM generated by GQD, which is different from other GNMs. However, NaCl concentration can be negligible. Moreover, residual GQD in natural water can participate in the DBPs formation and increase the content of DBPs, which may be influenced by the diversity of chemical composition in surface water. This study highlights the unique impact of GQD on DBPs formation.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143985"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Short alkyl-chained Imidazolium-based Ionic Liquids: Promising green solution or potential environmental threat?","authors":"Matilde Vieira Sanches, Matteo Oliva, Giorgia Fumagalli, Andrea Mezzetta, Lorenzo Guazzelli, Rosa Freitas, Carlo Pretti","doi":"10.1016/j.chemosphere.2024.143928","DOIUrl":"10.1016/j.chemosphere.2024.143928","url":null,"abstract":"<p><p>Ionic Liquids (ILs) are currently applied in a wide variety of fields, with promising outcomes in microalgae high value biocompounds extraction. The occurrence of these compounds in natural water systems, with their characteristic stability and low biodegradability, becomes a threat worthy of attention. In the present study, Dunaliella tertiolecta, Isochrysis galbana and Rhinomonas reticulata were exposed to 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM] Tf₂N) for 72, 168 and 264 h, at 20 and 25 °C. Obtained results suggest that the N-containing cationic ring in the selected IL could act as a nitrogen source, aiding protein synthesis and growth in the three studied microalgae. Moreover, this specific IL might become a potential eutrophication agent when discharged in aquatic ecosystems, already pressured by climate change conditions. Important lipid contents, mainly in I. galbana and associated with increased cellular energy allocation values, could be related to mitochondrial stress, which is known to be a lipid accumulation promoting factor. Hence, we hypothesise that, since [BMIM] Tf₂N does not appear to impair growth or biocompound accumulation, it could be a candidate for microalgae biomass pretreatment in biodiesel production. However, its life cycle and disposal must be carefully considered.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143928"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Triclosan in the urine of Chinese youth: concentration, temporal variability, sources of exposure and predictive ability.","authors":"Lixiang Wu, Bingqi Zhu, Yan Jiang, Shushu Xie, Zhiqin Hu, Huili Lan, Zhishan Ding, Dapeng Ji, Xiaoqing Ye","doi":"10.1016/j.chemosphere.2024.144005","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.144005","url":null,"abstract":"<p><p>Triclosan (TCS) is an antimicrobial agent commonly used in personal care products. The assessment of TCS exposure in humans frequently relies on analyzing urinary TCS levels. Consequently, it is crucial to have a comprehensive understanding of the variability of TCS levels in urine. However, studies of temporal variations in urinary TCS levels at different time intervals among youth are lacking. This study collected urine samples from 109 participants over a period of one year to assess the temporal variability of TCS over different time intervals. The detection rate of TCS in urine was 75%. The intraclass correlation coefficient (ICC) indicated good reproducibility of TCS in spot urine among youth at a day, a week, and a month (ICC = 0.541-0.857), but the poor reproducibility within one year (ICC = 0.209). The number of spot urine samples needed to provide dependable exposure estimates (ICC > 0.8) at different time periods over the course of a year ranges from 1 to 16 tubes (m = 1-16). The sensitivity and specificity of TCS as a predictor of the mean annual top 33% concentration of TCS ranged from 0.667 to 1.000 and from 0.519 to 1.000, respectively. In addition, Spearman correlation analysis revealed that TCS levels were significantly associated with the use of various personal care products (antibacterial ointment, mouthwash or body deodorant, hand sanitizer) (p < 0.05). In light of these findings, it is recommended that urine samples be collected in 1 to 16 tubes at least 3 months apart to accurately assess the level of exposure at the appropriate time of the year, facilitating the prospective assessment of TCS exposure in different epidemiological studies.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"144005"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142878855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid model development through the integration of quantitative read-across (qRA) hypothesis with the QSAR framework: An alternative risk assessment of acute inhalation toxicity testing in rats.","authors":"Sapna Kumari Pandey, Kunal Roy","doi":"10.1016/j.chemosphere.2024.143931","DOIUrl":"10.1016/j.chemosphere.2024.143931","url":null,"abstract":"<p><p>Regulatory authorities frequently need information on a chemical's capacity to produce acute systemic toxicity in humans. Due to concerns about animal welfare, human relevance, and reproducibility, numerous international initiatives have centered on finding a substitute for using animals in acute systemic lethality testing. These substitutes include the more current in-silico and in vitro techniques. Meanwhile, Advances in artificial intelligence and computational resources have led to a rise in the speed and accuracy of machine learning algorithms. Therefore, new approach methodologies (NAMs) based on in-silico modeling are considered a suitable place to start, even though many non-animal testing approaches exist for evaluating the safety of chemicals. Eventually, in this investigation, we have developed a hybrid computational model for acute inhalational toxicity data. In this case study, two major in silico techniques, QSAR (quantitative structure-activity relationship) and qRA (quantitative read-across) predictions, were utilized in a hybrid manner to extract more insightful information about the compounds based on similarity as well as the physicochemical properties. The findings of this investigation demonstrate that the integrated method surpasses the traditional QSAR model in terms of statistical quality for inhalational toxicity data, with greater predictability and transferability, due to a much smaller number of descriptors used in the hybrid modeling process. This hybrid modeling technique is a promising alternative, which can be paired with other methods in an integrated manner for a more rational categorization and evaluation of inhaled chemicals as a substitute for animal testing for regulatory purposes in the future.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143931"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142822637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urinary neonicotinoid exposure and its association with hypertension and dyslipidemia among the elderly: A cross-sectional study in Shenzhen, China.","authors":"Xinxin Tang, Jiaojiao Ma, Peiyi Liu, Sisi Yu, Xiaohu Ren, Wenchao Zhu, Xiao Chen, Yiming Ge, Haiyan Huang, Jianjun Liu, Shaoyou Lu","doi":"10.1016/j.chemosphere.2024.143973","DOIUrl":"10.1016/j.chemosphere.2024.143973","url":null,"abstract":"<p><p>In recent years, neonicotinoids (NEOs) as a new type of insecticide have been increasingly used worldwide, causing significant impacts on human health. This study collected urine samples from 1147 elderly individuals (including 714 in the control group and 433 in the hypertension group) in Shenzhen, China, and detected the concentrations of six types of NEOs and four metabolites of NEOs (mNEOs). The aim of this study is to investigate the association between NEOs exposure and hypertension and dyslipidemia. After measurement, we find that the lowest detection rate (DR) among NEOs is imidacloprid (IMI), at only 39.3%. The NEO with the highest urine median concentration is dinotefuran (DIN) (1.31 μg/L), while the mNEO with the highest median concentration is DM-ACE (2.74 μg/L). Through univariate analysis, we found that DM-THM may promote the development of hypertension, while logistic regression indicated that IMI-OF could be a risk factor for hypertension. As prototypes of these two metabolites, thiamethoxam (THM) and IMI may also be risk factors for hypertension. Linear regression analysis revealed a negative correlation between the concentration of thiamethoxam (THD) and low-density lipoprotein (LDL) level, while DIN was positively correlated with triglyceride (TG) level and negatively correlated with high-density lipoprotein (HDL) level. Mediation effect analysis showed that THD may influence the risk of hypertension in the elderly by affecting LDL level. Based on this study, we believe that exposure to NEOs may increase the risk of hypertension in the elderly population.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143973"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of PFAS residuals: A case study on PFAS content in a firefighting foam delivery system of an aircraft rescue and firefighting vehicle.","authors":"John Anderson, Bethany Parker, T C Guillette, David Liles, Brian Wisner, Lydia Koropeckyj-Cox, Johnsie R Lang","doi":"10.1016/j.chemosphere.2024.143916","DOIUrl":"10.1016/j.chemosphere.2024.143916","url":null,"abstract":"<p><p>When fire suppression systems that held aqueous film forming foams (AFFF) are transitioned to per- and polyfluoroalkyl substance (PFAS)-free firefighting formulations, PFAS can dissolve from the wetted surfaces of the systems and release into the new firefighting formulations. The overall objective of this work was to characterize PFAS residual mass on the wetted surfaces of aircraft rescue and firefighting (ARFF) vehicle on-board fire suppression system components from the water, mixed fire water, and foam concentrate systems with various geometries, materials of construction, and locations within the fire suppression system. The ARFF vehicle components were dismantled from the system after a triple water rinse procedure which removed 19,600 mg total measured PFAS post-TOP assay from the foam concentrate system and 23 mg total measured PFAS post-TOP assay from the water system. Results for total mass of PFAS on each part indicate most of the residuals were present on parts which have large surfaces areas or the rubber or brass parts. For large surface area plastic parts (i.e., foam and water tanks), the overall mass on these parts was greater than other parts even as the PFAS residual concentrations were lower compared to other material types due to larger surface areas for accumulation. Parts constructed of rubber or brass appeared to have higher measured PFAS surface residual concentrations as compared to parts constructed of plastic or stainless steel.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143916"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perfluorooctanesulfonic acid (PFOS) removal from aqueous solution through N-doped porous copper-carbon composite derived from recycled copper obtained from fly ash incinerator: Water decontamination via municipal waste remnants.","authors":"Mohammad Ali Yavari, Hossein Molla Nadali Pishnamaz, Majid Baghdadi, Mohammad Ali Abdoli","doi":"10.1016/j.chemosphere.2024.143963","DOIUrl":"10.1016/j.chemosphere.2024.143963","url":null,"abstract":"<p><p>Invincible growth in waste production is the consequence of overpopulation, which should be addressed to reduce the occupied landfill surface needed for their disposal and to alleviate the leachate of extremely hazardous material into the soil and water bodies. In this study, copper (Cu) was extracted from fly ash of a municipal solid waste incinerator by an electro-chemical method, which was optimized to recover the highest amount of Cu, and then it was chelated with 4-aminobenzoic acid (AM) and terephthalic acid (TM) in an aqueous phase. The obtained composites were then heated to form a porous calcinated copper-carbon composite and utilized to adsorb the forever contaminant of PFOS from aqueous solutions. As the calcinated composite of Cu/AM with a ratio of 1:1 removed a greater amount of PFOS from the aqueous solution than Cu/TA, it was utilized as the ultimate adsorbent. The platform adsorbent was subjected to multiple characterizations, including XRD, FESEM, elemental mapping, TEM, BET, EDS, ICP-OES, FTIR, DLS, and point of zero charges, as well as optimization of several operational parameters involving pH, adsorbent dosage, initial PFOS concentration, and contact time. At the neutral pH, under the optimal conditions (adsorbent dosage of 1 g L^-1 and 5 h), 97.23% of PFOS was eliminated from the solution spiked with 5 mg L^-1 of PFOS. The equilibrium data were best fitted with Frundlich isotherm, and the maximum adsorption capacity of 402 mg g^-1 was achieved. The optimal conditions were also applied to PFOA, demonstrating high adsorption of different types of PFAS. The recovery tests of the adsorbent conducted 5 times on the solution spiked with 10 mg L^-1 of PFOS showed a slight decrease in PFOS removal at least for 5 regeneration cycles, demonstrating the high adsorption capacity and its reusability, thereby validating its feasibility for large-scale applications.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143963"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interaction of zinc oxide nanoparticles with soil colloidal suspensions.","authors":"Veronika Cyprichová, Martin Urík, Sindy Csibriová, Marek Kolenčík, Marek Bujdoš, Peter Matúš, Martin Šebesta","doi":"10.1016/j.chemosphere.2024.144001","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.144001","url":null,"abstract":"<p><p>The properties of soil colloids determine the interaction with nanoparticles, their behavior, and destiny in the soil environment including soil solutions. This study examines how several properties of soil colloids, including pH, phosphorus content, clay minerals, and iron oxyhydroxides, influence the interaction with zinc oxide nanoparticles (ZnO-nps). For the experimental setup, four different soils were selected from the temperate climate of central Europe, in Slovakia, exhibiting pH values ranging from 4.6 to 8.0. Two concentrations of ZnO-nps suspended in water, 20 and 200 mg Zn∙L^-1 were applied to the colloidal suspensions extracted from the soils and shaken for 24 hours. Then the soil colloids were separated into three fractions, 100 to 1000 nm in size, 1 to 100 nm in size, and dissolved. Concentrations of Al, Si, Fe, Mn, P, and Zn were measured in these fractions, providing a comprehensive understanding of ZnO-NP distribution and interaction with soil colloids. The study reveals that soil pH significantly affects the distribution of Zn from ZnO-nps across different size fractions. However, the concentration of Fe, Al, and Si had an even greater impact on the concentration of dissolved Zn. Additionally, behavior of Zn following ZnO-NP application is associated with soil P content, where P may stabilize the ZnO-nps. These findings enhance the knowledge of nanoparticle behavior in various soil matrices and contribute to developing more stable, efficient, and easily usable nanoparticle-based applications in environmental science and agriculture.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"144001"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Cyanobacterial outbreak in Lake Avernus: targeted and untargeted analyses and follow up actions for food safety.","authors":"Ilaria Di Marco Pisciottano, Pasquale Gallo","doi":"10.1016/j.chemosphere.2024.144006","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.144006","url":null,"abstract":"<p><p>A massive Planktothrix rubescens bloom was observed during 2022 in the Lake Avernus, a volcanic lake located in Campania Region (Southern Italy). The cyanobacterial mass migrated, through a channel, to the near Gulf of Pozzuoli, causing the contamination of two marine sites dedicated to mussel farming, thus posing a potential risk for consumers' health. Mussel and water samples, from both the sea and the lake were collected weekly and analyzed by liquid chromatography coupled to tandem mass spectrometry, for identification and quantification of 10 microcystins. Moreover, the samples were analyzed by high resolution mass spectrometry in untargeted mode to determine other cyanotoxins basing on the accurate mass of the precursor ions and their MS/MS spectra. The microcystins were not detected at all, whereas other bioactive peptides, such as anabaenopeptins and oscillamide Y, were detected according to the toxicological profiles described for Planktothrix rubescens in the scientific literature. The case reported represents a modern approach for rapid characterization of some environmental outbreaks, as well as an example regarding how the public Health Authority can manage the possible risk for food safety, due to unknown substances and to enforce legal follow up actions.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"144006"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective oxidation of ammonium to dinitrogen by a novel catalytic ozonation system: Regulating the N₂ selectivity by sulfite.","authors":"Yuexinxi Wang, Yong Liu, Shizong Wang, Jingwen Wang, Jianlong Wang","doi":"10.1016/j.chemosphere.2024.143999","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143999","url":null,"abstract":"<p><p>The selective oxidation of NH₄⁺-N into dinitrogen (N₂) is still a challenge. Currently, traditional advanced oxidation processes often involve in the chlorine free radicals to increase the selectivity of NH₄⁺-N oxidation products towards N₂ but is usually accompanied by the production of many toxic disinfection by-product. Herein, we reported a novel catalytic ozonation system (UV/O₃/MgO/Na₂SO₃) for selective NH₄⁺-N oxidation based on the reducing capability and photochemical properties of Na₂SO₃. In the UV/O₃/MgO/Na₂SO₃/NH₄⁺-N system, Na₂SO₃ could not only reduce the intermediate of NO₂^- or NO₃^- to N₂ by inducing the generation of hydrated electrons under UV irradiation, but also reduce the gaseous intermediate of NO_x to N₂, thus achieving a high N₂ selectivity (>85 %). Based on the analyses of each component roles, the determination of reactive oxygen species and the evolution of NH₄⁺-N oxidation intermediates, the possible mechanisms of NH₄⁺-N selective oxidation by UV/O₃/MgO/Na₂SO₃ system were revealed. This system exhibits a great potential for the NH₄⁺-N removal from water/wastewater. This work provides a new strategy for NH₄⁺-N oxidation into N₂ by advanced oxidation processes independent of the action of chlorine free radicals.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143999"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}