Science of the Total Environment最新文献

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Effects of temperature, relative humidity and soil organic carbon content on soil-air partitioning coefficients of volatile PFAS. 温度、相对湿度和土壤有机碳含量对挥发性全氟辛烷磺酸土壤-空气分配系数的影响。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-18 DOI: 10.1016/j.scitotenv.2024.176987
Weiwei Zhang, Limin Ma, Songsong Chen, Chong Chen, Chengcheng Bu, Jinpeng Yu, Ru Zhang, Yongzhi Wang, Haoyu Zeng, Yuchen Han
{"title":"Effects of temperature, relative humidity and soil organic carbon content on soil-air partitioning coefficients of volatile PFAS.","authors":"Weiwei Zhang, Limin Ma, Songsong Chen, Chong Chen, Chengcheng Bu, Jinpeng Yu, Ru Zhang, Yongzhi Wang, Haoyu Zeng, Yuchen Han","doi":"10.1016/j.scitotenv.2024.176987","DOIUrl":"10.1016/j.scitotenv.2024.176987","url":null,"abstract":"<p><p>Soil-air partitioning coefficient (K<sub>SA</sub>) values are often used to assess the environmental fate of organic contaminants in soil. Till now, sufficient K<sub>SA</sub> values have not yet been measured for many compounds of interest, including some emerging pollutants such as volatile PFAS. Moreover, the effects of environmental factors such as temperature, relative humidity and soil organic carbon content on K<sub>SA</sub> of volatile PFAS are also unclear. In this study, the K<sub>SA</sub> values of target volatile PFAS were measured under various temperature (20-40 °C), relative humidity (30-100 %) and soil organic carbon content (2.1 %-8.0 %) using a modified solid-phase fugacity meter. The results showed that higher temperatures, higher relative humidity and lower organic carbon content in soil may accelerate the diffusion of target volatile PFAS. Furthermore, the K<sub>SA</sub> measurements were used to derive a multiple linear regression model to depict the relationship between logK<sub>SA</sub> and temperature, relative humidity, soil organic carbon content and PFAS-specific logK<sub>OA</sub>. When compared with the predictions obtained from semi-empirical model, we argued that the multiple linear regression model is more robust and easier to implement for target volatile PFAS or other emerging volatile PFAS than the semi-empirical approach to help depict the diffusion process at target volatile PFAS contaminated sites.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176987"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Greening the city: A holistic assessment of waste management alternatives in India. 绿化城市:印度废物管理替代方案整体评估。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-18 DOI: 10.1016/j.scitotenv.2024.176894
Enrico Mazzoli, Abhijit Parashar, Paolo D'Odorico, Giacomo Branca
{"title":"Greening the city: A holistic assessment of waste management alternatives in India.","authors":"Enrico Mazzoli, Abhijit Parashar, Paolo D'Odorico, Giacomo Branca","doi":"10.1016/j.scitotenv.2024.176894","DOIUrl":"10.1016/j.scitotenv.2024.176894","url":null,"abstract":"<p><p>Waste is one of the major urban challenges faced globally today, and the severity of the challenge is further exacerbated by rapid urbanisation, growing populations and increasing per capita waste generation. As one of the largest urban agglomerations in the world, Delhi collects 11,352 t of waste every day. Without adequate segregation, most of this waste is sent to dumpsites and waste-to-energy plants, often associated with significant capital costs and environmental externalities. This paper conducts a life cycle assessment of the current waste management system and a comparative analysis with a suggested alternative scenario, where the share of recyclables and compostables going to landfills and waste-to-energy plants is reduced through adequate segregation. Our results revealed that landfills and waste-to-energy plants are associated with significant adverse environmental impacts such as climate change, soil and water acidification, freshwater eutrophication, human toxicity, and respiratory health. In comparison, compost plants showed negligible emissions per tonne of waste. The alternative scenario (i.e. reduce waste to landfill through adequate segregation) can help reduce the negative impact on all environmental indicators by an average of 23 %. We posit that the prevailing narrative of addressing the waste issue through waste-to-energy plants in Delhi goes against the country's climate neutrality targets. Instead, the circular economy approach offers simpler, faster, and more cost-effective solutions that policymakers should consider to reduce the financial and environmental load of the current and future waste management issue.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176894"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142455060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Heavy metals in roadside soil along an expressway connecting two megacities in China: Accumulation characteristics, sources and influencing factors. 中国连接两个特大城市的高速公路沿线路边土壤中的重金属:积累特征、来源和影响因素。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-30 DOI: 10.1016/j.scitotenv.2024.177095
Min Peng, Zheng Yang, Zijia Liu, Wei Han, Qiaolin Wang, Fei Liu, Yalong Zhou, Honghong Ma, Jinfeng Bai, Hangxin Cheng
{"title":"Heavy metals in roadside soil along an expressway connecting two megacities in China: Accumulation characteristics, sources and influencing factors.","authors":"Min Peng, Zheng Yang, Zijia Liu, Wei Han, Qiaolin Wang, Fei Liu, Yalong Zhou, Honghong Ma, Jinfeng Bai, Hangxin Cheng","doi":"10.1016/j.scitotenv.2024.177095","DOIUrl":"10.1016/j.scitotenv.2024.177095","url":null,"abstract":"<p><p>Transportation is widely recognized as a significant contributor to heavy metal (HM) pollution in roadside soils. A better understanding of HM pollution in soils near expressways is crucial, particularly given the rapid expansion of expressway transportation in China in recent years. In this study, 329 roadside topsoil samples were collected along the Beijing-Tianjin Expressway, which connects two megacities in China. Chemical analysis showed that HM concentrations in the soil samples were generally below national limits. The mean pollution index (Pi) values for As, Cr, Cu, Ni, Pb, and Zn ranged from 0.94 to 1.01, while Cd and Hg exhibited slightly higher mean Pi values of 1.19 and 1.13, respectively. The Nemerow integrated pollution index values for all samples ranged from 0.71 to 4.97, with a mean of 1.26. This suggests a slight enrichment of HM above natural background levels, especially for Cd and Hg. Source apportionment using positive matrix factorization revealed that natural sources contributed the most to soil HMs (64.51 %), followed by agricultural sources (19.15 %), traffic sources (9.77 %), and industrial sources (6.57 %). The Shapley additive explanation analysis, based on the random forest model, identified soil organic carbon, deep soil HM content, altitude, total soil K<sub>2</sub>O, urbanization composite impact index, and total soil P as primary influencing factors. This indicates that the impact of transportation on roadside soils along the Beijing-Tianjin Expressway is currently relatively limited. The prominent influence of soil properties and altitude underscored the importance of \"transport\" and \"receptor\" in the soil HMs accumulation process at the local scale. These findings provide critical data and a scientific basis for decision-makers to develop policies for expressway design and roadside soil protection.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177095"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Assessing on-site plastics fragmentation: Linking macroplastics litter to microplastics pollution in vegetable fields. 评估现场塑料碎片:将菜地中的大塑料垃圾与微塑料污染联系起来。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-29 DOI: 10.1016/j.scitotenv.2024.177168
Fabio Corradini, Eva Melillán, Mauricio Schoebitz, Rocío Carrasco, María Jiménez
{"title":"Assessing on-site plastics fragmentation: Linking macroplastics litter to microplastics pollution in vegetable fields.","authors":"Fabio Corradini, Eva Melillán, Mauricio Schoebitz, Rocío Carrasco, María Jiménez","doi":"10.1016/j.scitotenv.2024.177168","DOIUrl":"10.1016/j.scitotenv.2024.177168","url":null,"abstract":"<p><p>This study proposes a novel approach to determine whether farmers act as a pollution source of microplastics through macroplastic mismanagement or if they are temporary hosts of in-transit microplastics. Using a case-study approach, it was hypothesized that 90 % of soil microplastics would trace back to macroplastic waste mismanaged by farmers. To determine the amount of soil microplastics, linear transects were established and microplastic litter was counted and classified. Additionally, composite soil samples were used to count and colour-classify microplastics. The Kendall correlation was used to differentiate between the colour ranks of macro- and microplastics to discriminate between plastic on-site fragmentation or exogenous plastic pollution. For this, 37 vegetable farms in central Chile were assessed after the growing season. Farms showed lower microplastic counts than previously reported for similar productive conditions (3.68 ± 3.28 u/kg). A median colour correlation of 0.43 (IQR = 0.18-0.55) was observed between macro- and microplastics. Only in 25 % of the studied fields did on-site plastic fragmentation predominate over exogenous plastic pollution. The applied approach is simple to implement and does not require specialized laboratory equipment. We hope that the proposed methodology will serve in environmental monitoring to evaluate adherence to good agricultural practices and to guide pollution-prevention measures.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177168"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Individual-level noise exposure and its association with sleep quality and duration: A cross-sectional study using real-time data. 个人水平的噪音暴露及其与睡眠质量和持续时间的关系:一项使用实时数据的横断面研究。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-22 DOI: 10.1016/j.scitotenv.2024.177047
Wenzhen Li, Jiannan Cai, Gengze Liao, Mei-Po Kwan, Lap Ah Tse
{"title":"Individual-level noise exposure and its association with sleep quality and duration: A cross-sectional study using real-time data.","authors":"Wenzhen Li, Jiannan Cai, Gengze Liao, Mei-Po Kwan, Lap Ah Tse","doi":"10.1016/j.scitotenv.2024.177047","DOIUrl":"10.1016/j.scitotenv.2024.177047","url":null,"abstract":"<p><p>As urban populations grow, the problem of noise pollution becomes more significant. The limited number of epidemiological studies linking individual-level dynamic noise exposure to sleep highlights a gap in our understanding of how individual-level noise exposure impact sleep quality and duration. A cross-sectional survey was conducted in Hong Kong, and portable noise sensors were used to record participants' real-time noise exposure. The Pittsburgh Sleep Quality Index was used to assess their sleep quality. Logistic regression was used to examine the relationship of individual-level noise exposure with sleep quality and sleep duration. Among a total of 763 subjects included in the analysis, and a-weighted decibels [dB(A)] 24-h average exposure (L<sub>24</sub>) was 63.21 (58.85-67.85) dB(A) for workday and 63.52 (59.03-67.86) dB(A) for non-workday. A significant decrease in individual noise level was observed closer to bedtime (P < 0.05). Compared with the lowest noise exposure, exposure to the highest noise level was positively associated with the presence of poor sleep quality for L<sub>24</sub>, L<sub>d</sub> and L<sub>n</sub>, with an odds ratio (OR) and 95 % confidential interval (CI) of 1.53 (1.04-2.24), 1.65 (1.12-2.43), and 1.51 (1.03-2.21), respectively. Exposure to elevated noise level was associated with increased risk of shorter nocturnal sleep duration (< 7 h), the OR and 95 % CI was 1.87 (1.29-2.73) for L<sub>24</sub>, 1.58 (1.09-2.30) for L<sub>d</sub>, 1.50 (1.03-2.18) for L<sub>e</sub>, and 1.60 (1.10-2.32) for L<sub>n</sub> in the highest noise exposure group. Similar findings were observed both on workdays and non-workdays, respectively. Furthermore, the results showed that each 10 dB(A) increment in L<sub>24</sub> and L<sub>n</sub> was associated with a probable 29 % and 27 % increase in poor sleep quality and a 24 % and 24 % reduction in sleep duration. This study demonstrates that environmental noise exposure was associated with poor sleep quality and shorter sleep duration, posing a significant public health issue in Hong Kong.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177047"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Linear infrastructure and associated wildlife accidents create an ecological trap for an apex predator and scavenger. 线性基础设施和相关的野生动物事故为顶级捕食者和清道夫制造了一个生态陷阱。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-30 DOI: 10.1016/j.scitotenv.2024.176934
Navinder J Singh, Michelle Etienne, Göran Spong, Frauke Ecke, Birger Hörnfeldt
{"title":"Linear infrastructure and associated wildlife accidents create an ecological trap for an apex predator and scavenger.","authors":"Navinder J Singh, Michelle Etienne, Göran Spong, Frauke Ecke, Birger Hörnfeldt","doi":"10.1016/j.scitotenv.2024.176934","DOIUrl":"10.1016/j.scitotenv.2024.176934","url":null,"abstract":"<p><p>Animals may fall into an 'ecological trap' when they select seemingly attractive habitats at the expense of their fitness. This maladaptive behavior is often the result of rapid, human-induced changes in their natal environment, such as the construction of energy and transportation infrastructure. We tested the ecological trap hypothesis regarding human-created linear infrastructure on a widely distributed apex predator and scavenger-the Golden Eagle (Aquila chrysaetos), whose range spans the entire Northern Hemisphere. Roads and railways offer novel and attractive feeding opportunities through traffic-induced mortality of other species, while powerline areas provide perching or nesting sites and scavenging opportunities from electrocuted or collision-killed birds. These conditions may have negative demographic consequences for eagles if these apparent opportunities turn into traps. Using step selection functions, we analyzed habitat selection of 74 GPS-tracked Golden Eagles (37 adults and 37 immatures) during eleven years in Fennoscandia. To assess habitat attractiveness, we used wildlife traffic accident statistics for dominant wild species, and to evaluate demographic consequences, we used mortality data from the GPS-tagged eagles. Our analysis revealed that eagles selected linear features such as roads, railways and powerlines at both the population and individual levels. Both adult and immature eagles consistently selected these features, and the strength of selection for linear features increased with age in immature eagles. The linear features however had 5.5 times higher mortality risk for eagles than other selected habitats indicating the presence of an ecological trap. We discuss the implications of these findings for the conservation and population ecology of apex predators and scavengers, as well as their potential demographic consequences. To mitigate this issue, we urgently recommend the removal of carcasses from roads and tracks to prevent ecological traps for raptors and scavenger species worldwide. Additionally, we advocate for the development of methods and strategies to reduce wildlife traffic accidents.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176934"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Diurnal hourly near-surface ozone concentration derived from geostationary satellite in China. 从地球静止卫星推导出的中国昼夜每小时近地表臭氧浓度。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-30 DOI: 10.1016/j.scitotenv.2024.177186
Yi Zhang, Lin Zang, Jie Song, Jingru Yang, Ying Yang, Feiyue Mao
{"title":"Diurnal hourly near-surface ozone concentration derived from geostationary satellite in China.","authors":"Yi Zhang, Lin Zang, Jie Song, Jingru Yang, Ying Yang, Feiyue Mao","doi":"10.1016/j.scitotenv.2024.177186","DOIUrl":"10.1016/j.scitotenv.2024.177186","url":null,"abstract":"<p><p>Near-surface O<sub>3</sub> is a harmful atmospheric pollutant and a key component of urban photochemical pollution. The availability of satellite ozone concentration products is predominantly restricted to daytime, resulting in a lack of understanding of nighttime ozone pollution (e.g. nocturnal ozone enhancement events). This research leverages 5-km bright temperatures derived from Advanced Himawari Images (AHI) on the Himawari-8 satellite, in conjunction with auxiliary data, to estimate 24-h near-surface O<sub>3</sub> concentrations in China at a resolution of 5 km for 2020. The model achieves an average 5-fold cross-validation R<sup>2</sup> of 0.92. Comparative analysis with on-site observations reveals that the model has low relative errors between 8:00 and 21:00 LT. The estimated O<sub>3</sub> maps depict a consistent 24-h variation pattern, characterized by high and most fluctuating concentrations during the daytime, reaching a peak around 16:00 LT, which is primarily due to the increased photochemical reactions and the O<sub>3</sub> accumulation in the mid-afternoon. In the daytime of summer, high surface ozone concentrations are mainly contributed by June. The elevated levels of O<sub>3</sub> are predominantly found in central China, particularly in the Beijing-Tianjin-Hebei region and Inner Mongolia. It can also be seen that although the highest average daytime surface O<sub>3</sub> concentration occurs in summer, the highest nighttime concentration is observed in spring, which may be attributed to the frequent occurrence of horizontal transport and vertical mixing of O<sub>3</sub>. This study holds promise in providing comprehensive round-the-clock surface O<sub>3</sub> data across China, thereby enhancing our understanding of diurnal ground-level O<sub>3</sub> variations.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177186"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Midseason draining of paddy water suppresses microbial arsenic methylation in soil and alleviates rice straighthead disease. 稻田季中排水可抑制土壤中微生物砷甲基化,减轻水稻直头病。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-22 DOI: 10.1016/j.scitotenv.2024.177068
Axiang Gao, Chuan Chen, Zhenguo Tian, Wanying Qu, Peng Wang, Fang-Jie Zhao
{"title":"Midseason draining of paddy water suppresses microbial arsenic methylation in soil and alleviates rice straighthead disease.","authors":"Axiang Gao, Chuan Chen, Zhenguo Tian, Wanying Qu, Peng Wang, Fang-Jie Zhao","doi":"10.1016/j.scitotenv.2024.177068","DOIUrl":"10.1016/j.scitotenv.2024.177068","url":null,"abstract":"<p><p>Arsenic (As) methylation is an important component of As biogeochemical cycle. Microbial As methylation is enhanced under anoxic conditions in paddy soil, producing dimethylarsenate (DMA) which can cause physiological straighthead disease in rice. We conducted field experiments at two sites to test the effect of midseason draining of paddy water on microbial As methylation and the incidence of straighthead disease. Compared to continuous flooding, midseason draining increased soil Eh, decreased the abundances of microbial genes for arsenate reduction (arsC and arrA) and arsenite methylation (arsM), and lowered the concentrations of both inorganic As and DMA in soil porewater. Draining shifted microbial composition, resulting in decreases in the relative abundance of 17-132 amplicon sequence variants. Draining decreased the accumulation of DMA in rice husk and of inorganic As and DMA in rice grain, decreased the incidence of straighthead disease, and increased grain yield by 20-45 %. Further experiments were conducted at eight field sites to assess the effect of midseason draining in a split field design. Draining decreased husk DMA concentration by 40-65 % and increased grain yield by 25-209 %. This study demonstrates that midseason draining can effectively suppress microbial As methylation and alleviate rice straighthead disease, benefiting both grain yield and safety.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177068"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Perfluorobutanoic acid weakens the heterogeneous aggregation of microplastics and microalgae: Perspective from physicochemical properties, extracellular polymeric substances secretion and DLVO theory. 全氟丁酸可减弱微塑料和微藻的异质聚集:从理化性质、胞外聚合物质分泌和 DLVO 理论的角度看问题。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-29 DOI: 10.1016/j.scitotenv.2024.177127
Yue Li, Xiaoying Zheng, Zhilin Zhao, Wenfei Li, Yu Huang, Haidong He, Zongshuo Han, Jiaqing Tao, Tao Lin
{"title":"Perfluorobutanoic acid weakens the heterogeneous aggregation of microplastics and microalgae: Perspective from physicochemical properties, extracellular polymeric substances secretion and DLVO theory.","authors":"Yue Li, Xiaoying Zheng, Zhilin Zhao, Wenfei Li, Yu Huang, Haidong He, Zongshuo Han, Jiaqing Tao, Tao Lin","doi":"10.1016/j.scitotenv.2024.177127","DOIUrl":"10.1016/j.scitotenv.2024.177127","url":null,"abstract":"<p><p>Microplastics (MPs) and per- and poly-fluoroalkyl substances extensively coexist in aquatic environments and potentially endanger organisms. Microalgae may decrease the effective concentration of pollutants via hetero-aggregation with MPs and adsorption of emerging contaminants. However, the potential influence of coexistent pollutants on hetero-aggregation of MPs and microalgae remains unknown. This study investigated the hetero-aggregation process involving different sizes of polystyrene (PS, 3.0 and 50.0 μm) with Chlorella sorokiniana (C. sorokiniana) in the presence or absence of perfluorobutanoic acid (PFBA) along settling experiments, scanning electron microscope, and Derjaguin-Landau-Verwey-Overbeek (DLVO) model. We found that the hetero-aggregation between C. sorokiniana and 3 μm PS was more pronounced than with 50 μm PS, while PFBA inhibited this process. ΔOD<sub>1</sub> values (reflected hetero-aggregation level) for 3PS-cells and 50PS-cells were 0.189 and 0.087, respectively, and PFBA decreased these values to 0.134 and 0.033. Furthermore, extracellular polymeric substances, known as inducer of hetero-aggregation, increased by 14.33% when exposed to 3 μm PS alone, whereas the co-exposure group showed a decrease of 4.52% compared to 3PS-cells group. PFBA also significantly decreased the protein/polysaccharide ratios in both MPs sizes, reducing hetero-aggregation. DLVO theory revealed that microalgae lowered the energy barrier significantly, while PFBA elevated it, indicating that hetero-aggregation was inhibited by PFBA. This study provides new perspectives for pollutant removal and toxicity variation in aquatic environments.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"177127"},"PeriodicalIF":8.2,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142492398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
引用次数: 0
Promoting elemental mercury immobilization performance from smelting flue gas over a wide temperature range via cobalt-doped copper sulfide adsorbents. 通过掺钴硫化铜吸附剂在宽温度范围内提高冶炼烟气中元素汞的固定性能。
IF 8.2 1区 环境科学与生态学
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-10-20 DOI: 10.1016/j.scitotenv.2024.177097
Yixuan Liu, Licong Guan, Ruixiang Wang, Zhikang Chen, Zhiheng Zhang, Zhifeng Xu, Hui Liu, Zhilou Liu
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