Environmental Research最新文献

{"title":"Assessment of cerium adsorption potential of phosphoric acid activated biochar in aqueous system: Modelling and mechanistic insights","authors":"Jeevanantham Sathasivam ,&nbsp;Prasanna Venkatesh Rajaraman ,&nbsp;Selvaraju Narayanasamy","doi":"10.1016/j.envres.2024.120301","DOIUrl":"10.1016/j.envres.2024.120301","url":null,"abstract":"<div><div>Cerium pollution in waterbodies by improper industrial waste disposal is a major concern due to its detrimental impacts on the environment. Therefore, treatment of cerium-contaminated water is inevitable. Hence, this study is focused on the remediation of cerium pollution using phosphoric acid-activated biochar (PPMB) as an adsorbent, synthesized upon pyrolytic activation of palmyra palm male flower-based pristine biochar (PMFB) with H₃PO₄ at 500 °C. The physico-chemical surface properties of PMFB and PPMB were evaluated through various microscopic and spectroscopic analyses. The key parameters such as biochar dosage, pH, temperature, contact time and initial cerium concentration were optimized as 0.5 g/L, 5.0, 303 K, 180 min and 50 mg/L respectively via batch adsorption. Pseudo-second order kinetic and Toth isotherm are the best-fitted models. The thermodynamic parameters including ΔG^◦ (−30.4707 ± 0.7618 kJ/mol at 303 K), ΔH^◦ (16.1499 ± 0.78 kJ/mol), and ΔS^◦ (153.617 ± 3.8404 J/mol/K) conveying that cerium adsorption onto PPMB was spontaneous, endothermic, and highly disordered at PPMB-bulk adsorption medium interface. Precipitation, electrostatic attraction, and surface complexation are predicted to be the predominant mechanisms for the chosen PPMB-cerium adsorption system. Moreover, cerium phytotoxicity on <em>Vigna radiata</em> explains the real-time applicability and feasibility of cerium adsorption using PPMB. Thus, the key findings of this study specified that the higher adsorption capacity of PPMB (141.3484 ± 6.9856 mg/g) contributed by the incorporated phosphate groups, predominant mesoporosity, SSA_BET of 230.559 m²/g and anionic surface at a wider pH range (pH&gt;3.08) make PPMB as efficient, economically feasible and environmentally friendly adsorbent for cerium adsorption in aqueous system.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120301"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589266","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":"Luminescent iron phthalocyanine organic polymer nanosheets with space-separated dual-active sites for the detection and photocatalytic reduction of Cr(Ⅵ) from wastewater","authors":"Wenfei Ding ,&nbsp;Zhaoyi Mo ,&nbsp;Jia Qi ,&nbsp;Mengying Wang ,&nbsp;Junyu Zou ,&nbsp;Kuo Wang ,&nbsp;Daxiang Gong ,&nbsp;Yongju Zhao ,&nbsp;Hong Miao ,&nbsp;Zhongquan Zhao","doi":"10.1016/j.envres.2024.120282","DOIUrl":"10.1016/j.envres.2024.120282","url":null,"abstract":"<div><div>Cr(Ⅵ) residues in livestock and poultry wastewater are a rising concern for human health and biotic environments. For the removal of Cr(Ⅵ), its simultaneous reduction and adsorption represents a sustainable and efficient strategy. Herein, iron nodes on covalently bonded two-dimensional phthalocyanine organic polymer (PcOP-Fe) nanosheets with space-separated dual-active sites are developed for the simultaneous detection and removal of Cr(VI) from wastewater. In the FeN₄ structure of PcOP-Fe nanosheets, Fe acts as an electron capture center, effectively facilitating the accumulation of photogenerated electrons and transferring them to Cr(VI), thereby achieving its photocatalytic reduction. Meanwhile, pyrrolic nitrogen provides excellent adsorption sites, enabling the adsorption of Cr(III) or Cr(0). Fe accumulates the photogenerated electrons from pyrrole N and transfer them to Cr(Ⅵ). The formation of N-Cr(Ⅲ) bonds causes a space-separation between Cr(Ⅵ) and Cr(III). In addition, PcOP-Fe can be used for a Cr(Ⅵ) detection agent. The photoluminescence intensity decreases linearly with increasing Cr(Ⅵ) concentration from 80 μM to 2 mM, with a limit of detection of 0.18 μM. The PcOP-Fe nanosheets exhibit good Cr(Ⅵ) detection and reduction performance in livestock and poultry wastewater, suggesting their suitability for practical sensing applications. Thus, the PcOP-Fe nanosheets with space-separated dual-active sites are promising for the simultaneous detection and removal of Cr(Ⅵ) in water treatment processes.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120282"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589289","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 the suitability of hair for assessing wildlife exposure to anticoagulant rodenticides (ARs)","authors":"Marco Picone ,&nbsp;Annamaria Volpi Ghirardini ,&nbsp;Rossano Piazza ,&nbsp;Tiziano Bonato","doi":"10.1016/j.envres.2024.120302","DOIUrl":"10.1016/j.envres.2024.120302","url":null,"abstract":"<div><div>Anticoagulant rodenticides (ARs) are potent pesticides acting as vitamin K epoxide reductase inhibitors causing haemorrhaging or external bleeding from orifices and/or skin lesions in intoxicated rodents. However, their non-selective mode of action makes them particularly harmful for non-target wildlife, which may be exposed to ARs via ingestion of AR-containing baits (primary exposure), feeding on AR-intoxicated rodents and carrions (secondary exposure), consuming AR-contaminated necrophagous species (tertiary exposure), and exposure to surface waters receiving baited sewer systems and ARs from outdoor-placed traps after heavy rain events. In the present study, we assessed the suitability of hairs as a non-invasive matrix for monitoring the possible exposure of mammals to ARs with a focus on the first-generation anticoagulant rodenticides (FGARs) warfarin, coumatetralyl, and chlorophacinone and the second-generation anticoagulant rodenticides (SGARs) brodifacoum, bromadiolone, difenacoum, flocoumafen, and difethialone. The Red fox (n = 24) was selected as the species representing the potentially exposed non-target wildlife in a littoral area of Northern Italy along the Adriatic coast (Cavallino-Treporti municipality). Half (n = 12) of the analysed hair samples were positive for at least one of the targeted ARs, with a higher prevalence of SGARs (n = 11; 46%) compared to FGARs (n = 1; 4%). The most frequently quantified ARs were brodifacoum (25%), difethialone (13%), and flocoumafen (13%), with concentrations ranging from 0.08 ng g⁻¹ (difethialone) to 0.96 ng g⁻¹ (brodifacoum). These data documented that a relevant part of the Red foxes living in the study area were exposed to ARs and, most importantly, provided the first evidence that hair residues can be used as a non-invasive matrix for assessing the possible exposure of mammals to ARs.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120302"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602536","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":"Improved volatile fatty acid production in anaerobic digestion via simultaneous temperature regulation and persulfate activation by biochar: Chemical and biological response mechanisms","authors":"Zishuai Zhang ,&nbsp;Ruijie Zhang ,&nbsp;Yanwen Ma,&nbsp;Ying Sun","doi":"10.1016/j.envres.2024.120271","DOIUrl":"10.1016/j.envres.2024.120271","url":null,"abstract":"<div><div>Increasing volatile fatty acid (VFA) production via persulfate activation (i.e., chemical effect) in anaerobic digestion (AD) is an emerging resource utilization method. However, the reaction mechanisms responsible for improving VFA production in AD via simultaneous temperature regulation and persulfate activation by biochar remain unclear. In this study, three PB15 treatment systems of low temperature (15 °C), medium temperature (35 °C) and high temperature (55 °C) were set to explore the relationship between VFAs production and treatment temperature and the influence of temperature on the reaction mechanism. The results show that the improvement of hydrolysis and acidification efficiency of the system in the medium temperature system is the highest. The VFA yield and acid production rate in the treatment group at 35 °C were 2.49 and 5.22 times higher than those in the control group, respectively. The chemical effect effectively initiated the anaerobic acid production process and maintained the dominant role of the biological effect. The activity of persulfate is too low at low temperature, and its decomposition is too fast at high temperature. Plenty of free radicals lead to enhanced oxidation of the system, which may kill the fermentation bacteria. The NCM model indicates that microbial stability is reduced in high temperature systems. The SEM model showed that temperature change mainly affected substrate degradation by hydrolytic bacteria and indirectly affected acid production by acid-producing bacteria. This study provides a new strategy for realizing pollutant recycling and increasing VFAs production in cold area.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120271"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602538","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":"Nationwide analysis of air pollution hotspots across India: A spatiotemporal PM2.5 trend analysis (2008–2019)","authors":"Suganthi Jaganathan ,&nbsp;Ajit Rajiva ,&nbsp;Heresh Amini ,&nbsp;Jeroen de Bont ,&nbsp;Shweta Dixit ,&nbsp;Anubrati Dutta ,&nbsp;Itai Kloog ,&nbsp;Kevin J. Lane ,&nbsp;Jyothi S. Menon ,&nbsp;Amruta Nori-Sarma ,&nbsp;Dorairaj Prabhakaran ,&nbsp;Joel Schwartz ,&nbsp;Praggya Sharma ,&nbsp;Massimo Stafoggia ,&nbsp;Gagandeep Kaur Walia ,&nbsp;Gregory A. Wellenius ,&nbsp;Poornima Prabhakaran ,&nbsp;Petter Ljungman ,&nbsp;Siddhartha Mandal","doi":"10.1016/j.envres.2024.120276","DOIUrl":"10.1016/j.envres.2024.120276","url":null,"abstract":"<div><h3>Introduction</h3><div>India experiences high levels of air pollution as measured by fine particulate matter &lt;2.5 μm (PM_2.5) across the country. With limited resources, it is imperative to identify the most impacted areas. We aimed to identify air pollution hotspots in India and analyze temporal trends.</div></div><div><h3>Methods</h3><div>We conducted a geospatial analysis using Getis-Ord Gi statistics on gridded-annual levels of PM_2.5 disaggregated for every state/UT and three largest cities [Delhi, Kolkata &amp; Mumbai] of India from 2008 to 2019. The annual average PM_2.5 was derived from a validated and robust nationwide spatiotemporal model(1kmx1km). Hotspots were identified annually using Gi∗ score and p-value and temporal trends across 2 periods [T1:2008–2013 &amp; T2:2014–2019] for each spatial unit. We classified temporal trends based on the number of occurrences of hotspots in T1 and in T2 as consistent (similar in T1 &amp; T2), declining (decreasing in T2) and emerging (increasing in T2) hotspots.</div></div><div><h3>Results</h3><div>We identified consistent hotspots in 9.9% followed by emerging hotspots in 2.6% of the country where 16% and 4.9% people live. In addition, we identified declining hotspots in 2.6% area with 3.4% of the population. Rajasthan had largest share of area identified as consistent hotspots while Uttar Pradesh had densely populated consistent hotspots. Maharashtra had both higher number of areas identified as emerging and declining hotspots. Among the largest cities, Kolkata had highest proportion of consistent hotspots. We identified 170 additional cities with either consistent or emerging hotspots beyond the non-attainment cities as defined by the National Clean Air Programme.</div></div><div><h3>Conclusion</h3><div>India continues to have large areas of consistent and emerging hotspots of air pollution where close to a fifth of India's population live. Identifying hotspots can inform strategic approach for targeted action in air quality management, appropriate resource allocation and a baseline for assessing intervention effectiveness and future programs and policies, including health.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120276"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602549","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":"In-utero exposure to real-life environmental chemicals disrupts gene expression within the hypothalamo-pituitary-gonadal axis of prepubertal and adult rams","authors":"Mohammad Ghasemzadeh Hasankolaei ,&nbsp;Neil P. Evans ,&nbsp;Chris S. Elcombe ,&nbsp;Richard G. Lea ,&nbsp;Kevin D. Sinclair ,&nbsp;Vasantha Padmanabhan ,&nbsp;Michelle Bellingham","doi":"10.1016/j.envres.2024.120303","DOIUrl":"10.1016/j.envres.2024.120303","url":null,"abstract":"<div><div>Environmental chemicals (ECs) have been associated with a broad range of disorders and diseases. Daily exposure to various ECs in the environment, or real-life exposure, has raised significant public health concerns. Utilizing the biosolids-treated pasture (BTP) sheep model, this study demonstrates that in-utero exposure to a real-life EC mixture disrupts hypothalamo-pituitary-gonadal (HPG) axis gene expression and reproductive traits in prepubertal (8-week-old, 8w) and adult (11-month-old) male sheep. Ewes were maintained on either BTP or pastures fertilized with inorganic fertilizer [control (C)] from approximately one month prior to insemination until around parturition. Thereafter, all animals were kept under control conditions. Effects on reproductive parameters including testosterone concentrations and the expression of key genes in the HPG axis were evaluated in eight-week-old and adult male offspring from both C and biosolids-exposed (B) groups. Results showed that, at 8w, relative to C (n = 11), B males (n = 11) had lower body weight, and altered testicular expression of <em>HSD3B1</em>, <em>LHR</em> and <em>HSD17B3</em>, <em>BMP4</em>, <em>ABP</em>, <em>P27</em>^<em>kip</em> and <em>CELF1</em>. Principal component analysis (PCA) identified two 8w B subgroups, based on hypothalamic expression of <em>GnRH</em>, <em>ESR1</em>, and <em>AR</em>, and pituitary expression of <em>KISSR</em>. The two subgroups also exhibited different serum testosterone concentrations. The largest biosolids effects were observed in the hypothalamus of adult rams with <em>NKB</em>, <em>ESR1</em>, <em>KISS1</em>, <em>AR</em>, <em>DLK1</em> and <em>GNRH1</em> mRNA expression differing between B (n = 10) and C (n = 11) rams. Testicular steroidogenic enzymes <em>CYP11A1</em> and <em>HSD3B1</em> mRNA expression also differed between exposure groups. PCA identified two adult B subgroups, with BS1 (n = 6) displaying hypothalamic effects and BS2 (n = 4) both hypothalamic and testicular effects. The subgroups also differed in circulating testosterone concentrations. These findings demonstrate that exposure to a real-life EC mixture may predispose some males to infertility, by disrupting key functional HPG markers before puberty with consequent downstream effects on steroid hormones and spermatogenesis.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120303"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602540","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":"PFAS and menopause onset: Is it just a matter of reverse causation? Cross-sectional and longitudinal analyses in highly exposed women in the Veneto Region","authors":"Mirko Berti ,&nbsp;Lara Cavicchio ,&nbsp;Isabella Rosato ,&nbsp;Tony Fletcher ,&nbsp;Gisella Pitter ,&nbsp;Francesca Russo ,&nbsp;Erich Batzella ,&nbsp;Cristina Canova","doi":"10.1016/j.envres.2024.120305","DOIUrl":"10.1016/j.envres.2024.120305","url":null,"abstract":"<div><h3>Introduction</h3><div>Several cross-sectional studies have linked perfluoroalkyl substances (PFAS) to prevalence of menopause. These findings might be influenced by reverse causation mechanism, making longitudinal studies more suitable. However, existing longitudinal studies are limited and present conflicting results.</div></div><div><h3>Aim</h3><div>This study investigates the association between PFAS and both prevalence and incidence of menopause, using longitudinal designs to limit the impact of reverse causation.</div></div><div><h3>Methods</h3><div>A surveillance program on a PFAS highly exposed population in the Veneto region started in 2017 with two rounds of screening, on average 3.8 years apart. Women who participated in the first screening (n = 11,046) were included in the cross-sectional analysis. Multivariate logistic regression models were used to estimate the Odds Ratios (ORs) of menopause associated with exposure to different PFAS. For incidence analysis a retrospective-prospective design used PFOA concentrations reconstructed to 2013 (n = 8536), and a prospective design involved women participating in both screenings (n = 1709), evaluating their baseline concentrations of PFOA, PFOS, and PFHxS. Cox proportional hazards models with age as the timescale were used to estimate Hazard Ratios (HRs), adjusting for sociodemographic and lifestyle factors.</div></div><div><h3>Results</h3><div>Increased menopause prevalence was associated with higher ln-concentrations of PFOA, PFOS, and PFHxS, with ORs of 1.31 (CI: 1.25–1.38), 1.51 (CI: 1.38–1.66), and 1.42 (CI: 1.34–1.51), respectively. The retrospective-prospective study showed increased risk of menopause in higher PFOA reconstructed quartiles, with HRs of 1.01 (CI: 0.87–1.18), 1.17 (CI: 1.02–1.37), and 1.07 (CI: 0.93–1.23) for the second, third and fourth quartiles. The prospective longitudinal study found no association between PFAS and menopause onset.</div></div><div><h3>Conclusions</h3><div>Our results showed a strong cross-sectional association between PFAS exposure and menopause, a weak positive association in the retrospective-prospective study, and no association in the prospective study. This suggests that cross-sectional associations may largely result from reverse causality due to early menopause on reducing PFAS excretion.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120305"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602563","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":"Monitoring, simulation and early warning of cyanobacterial harmful algal blooms: An upgraded framework for eutrophic lakes","authors":"Yinguo Qiu ,&nbsp;Jiacong Huang ,&nbsp;Juhua Luo ,&nbsp;Qitao Xiao ,&nbsp;Ming Shen ,&nbsp;Pengfeng Xiao ,&nbsp;Zhaoliang Peng ,&nbsp;Yaqin Jiao ,&nbsp;Hongtao Duan","doi":"10.1016/j.envres.2024.120296","DOIUrl":"10.1016/j.envres.2024.120296","url":null,"abstract":"<div><div>Cyanobacterial Harmful Algal Bloom (CyanoHAB) is a global aquatic environmental issue, posing considerable eco-environmental challenges in freshwater lakes. Comprehensive monitoring and accurate prediction of CyanoHABs are essential for their scientific management. Nevertheless, traditional satellite-based monitoring and process-oriented prediction methods of CyanoHABs failed to satisfy this demand due to the limited spatiotemporal resolutions of both monitoring data and prediction results. To address this issue, this paper proposes an upgraded framework for comprehensive monitoring and accurate prediction of CyanoHABs. A collaborative CyanoHAB monitoring network was firstly constructed by integrating space, aerial, and ground-based monitoring means. As a result, CyanoHAB conditions were assessed frequently covering the entire lake, its key areas, and core positions. Furthermore, by overcoming technical limitations associated with high-precision simulation of the growth-drift-accumulation process of CyanoHABs, such as the unclear drifting process of CyanoHABs and the mechanism of its coastal accumulation, the multi-scale CyanoHAB prediction was realized interconnecting the entire lake and its nearshore areas. The implemented framework has been applied in Lake Chaohu for over three years. It provided high-frequency and high-spatial-resolution CyanoHAB monitoring, as well as its multi-scale and accurate simulation. The application of this framework in Lake Chaohu had significantly improved the accuracies of CyanoHAB monitoring, simulation, and early warning. This advancement holds significant scientific value and offers potential for CyanoHAB prevention and control in eutrophic lakes.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120296"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589295","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":"Microbiologically influenced corrosion inhibition of carbon steel by a novel bacterium, Photobacterium sp., in simulated marine environment","authors":"Tingting Zhu ,&nbsp;Liling Xu ,&nbsp;Lijing Yang ,&nbsp;Pingping Zhao ,&nbsp;Xinglong Zhu ,&nbsp;Zhengli Wu ,&nbsp;Zhenlun Song","doi":"10.1016/j.envres.2024.120298","DOIUrl":"10.1016/j.envres.2024.120298","url":null,"abstract":"<div><div>Utilizing microorganisms in corrosion inhibition presents a broad application prospect, but the complexity of their biological activities and living environments call for continued investigation and innovation. To uncover the corrosion behaviors and mechanisms effected by microorganisms, the effect of a novel strain named <em>Photobacterium</em> sp. 9–1 on the carbon steel corrosion process was investigated. <em>Photobacterium</em> sp. 9–1 was identified as a corrosion inhibition bacterium that could reduce the weight loss of carbon steel by approximately 97%. The biofilm formed on the metal surface, which was composed of bacteria, proteins, polysaccharides, etc., was a vital biological structure for the corrosion prevention. Further, we found that the corrosion inhibition effect induced by <em>Photobacterium</em> sp. 9–1 was dependent on the physiological activities of live bacteria. Thus, the discovery of efficient corrosion inhibition bacteria and further study of the relationship between the corrosion protection behavior of bacteria and metal materials could provide new insight into the design and application of economic and eco-friendly corrosion protection materials.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"264 ","pages":"Article 120298"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602543","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":"DNA Methylation Biomarkers for Cumulative Lead Exposures and Cognitive Impairment.","authors":"Kanghong Shao, Yu Yu, Beate Ritz, Kimberly C Paul","doi":"10.1016/j.envres.2024.120304","DOIUrl":"https://doi.org/10.1016/j.envres.2024.120304","url":null,"abstract":"<p><strong>Background: </strong>Recent evidence suggests that cumulative low-level lead exposure has adverse effects on cognitive function in the elderly. To date, the few studies that have measured bone lead exposure relied on K-X-ray fluorescence (KXRF), methods that are mostly unavailable in large community-based studies. Here, we employ a methylation-based estimation method for bone and blood lead in the Alzheimer's Disease Neuroimaging Initiative (ADNI) cohort.</p><p><strong>Methods: </strong>Tibia, patella, and blood lead levels were estimated using blood DNA methylation (DNAm) biomarkers in 625 participants from the ADNI cohort. Cognitive function was assessed using the Montreal Cognitive Assessment (MoCA). Longitudinal analyses were conducted using linear mixed-effect regression models. Participants had different years of baseline (2010-2014) and follow-up visits (2014-2015).</p><p><strong>Results: </strong>DNAm derived tibia and patella lead levels were negatively associated with MoCA scores throughout follow-up, while DNAm derived blood lead level was not associated with MoCA scores. On average, we observed lower MoCA scores with increasing DNAm tibia lead (per interquartile range (IQR): β=-0.23; 95%CI: -0.44, -0.03) and DNAm patella lead, albeit the latter was weaker (per IQR: β=-0.19; 95%CI: -0.41, 0.04). When stratifying by gender, women showed a stronger decrease in cognitive function with increasing DNAm tibia lead (per IQR β=-0.34; 95%CI: -0.65, -0.04) than men (per IQR β=-0.15; 95%CI: -0.42, 0.13). The estimated decrease in MoCA scores per DNAm tibia lead IQR increase was stronger among participants with one or two APOE4 alleles (per IQR β=-0.37; 95%CI: -0.74, -0.01) than those with zero alleles (per IQR β=-0.14; 95%CI: -0.38, 0.10).</p><p><strong>Conclusion: </strong>These findings strengthen the evidence that cumulative long-term lead exposures levels are associated with decreased cognitive function in the elderly, especially among women and carriers of one or two APOE4 alleles. These findings based on whole blood methylation data corroborate previous epidemiologic studies that used KXRF for measuring bone lead.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"120304"},"PeriodicalIF":7.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142602429","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}