Chemosphere最新文献_第5页

Intercomparison of health impacts from nationwide PM2.5 pollution using observations and modeling: A case study of the worst event in recent decades

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-28 DOI: 10.1016/j.chemosphere.2025.144317

Seong-Bin Cho , Sang-Keun Song , Zang-Ho Shon , Jin-Seung Kim , Sung-Bin Lee

This study investigated the temporal and spatial characteristics of PM_2.5 and the related human health impacts in various environmental areas of South Korea during high-concentration days in winter (February 15−March 15, 2019). These analyses were performed using PM_2.5 observations and numerical modeling, which included the Community Multi-scale Air Quality model (CMAQ v5.3.2) and the Environmental Benefits Mapping and Analysis Program-Community Edition (BenMAP-CE v1.5.0.4). The mean PM_2.5 concentrations observed on high-concentration days (50.1 μg m⁻³ in the southeastern area to 65.2 μg m⁻³ in the southwestern area) were 2.1–2.7 times higher than those observed on non-high-concentration days (18.4 μg m⁻³ in the southeastern area to 27.0 μg m⁻³ in the northwestern area). In addition, many premature deaths and high premature death rates from respiratory and cardiovascular diseases attributable to high PM_2.5 levels were mostly distributed in the western regions of South Korea. These regional differences may be due to a combination of local meteorology and emissions and/or the long-range transport of pollutants. However, the magnitude of these premature deaths varied across areas, genders, and age groups due to differences in PM_2.5 concentrations and mortality rates. The number of premature deaths from cardiovascular diseases due to increased PM_2.5 levels was slightly higher than that from respiratory diseases, owing to the higher mortality rates. The health impact of cardiovascular diseases was estimated to be more severe in women than in men, and vice versa for respiratory diseases.

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引用次数: 0

Eco-conscious flame retardants for enhanced fire resistance in natural fiber reinforced polymers composite: A review bio-based, and industry implications

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144360

Ashraf Morsy , S. Kandil , Hassan A. Ewais , Ahmed H. Abdel-Salam , Asmaa Mohamed

This review provides a comprehensive analysis of eco-conscious flame retardants for enhancing fire resistance in natural fiber-reinforced polymer composites (NFRPCs). It examines current research methods, highlighting their advantages, limitations, and challenges in testing and evaluation. Traditional flame retardants and their drawbacks are discussed, emphasizing the benefits of NFRPCs and the potential of bio-based alternatives. The paper explores various types of bio-based flame retardants, their mechanisms of action, and their effectiveness in improving fire performance while maintaining material properties. Furthermore, the review delves into recent methodologies, functional groups, and the mechanisms involved in eco-friendly flame retardancy, analyzing their strengths, weaknesses, and emerging trends. Challenges related to compliance with industry standards, regulatory frameworks, and sustainable production practices are also addressed. The potential of utilizing waste biomass for flame retardancy is discussed, offering a pathway towards a circular economy. Additionally, the broader impacts on fire safety and hazard mitigation are explored. The review identifies key research gaps and future directions to advance the field of sustainable flame retardancy. Despite existing challenges, interdisciplinary collaboration is crucial in driving innovation and achieving sustainable fire safety solutions for composite materials.

{"title":"Eco-conscious flame retardants for enhanced fire resistance in natural fiber reinforced polymers composite: A review bio-based, and industry implications","authors":"Ashraf Morsy , S. Kandil , Hassan A. Ewais , Ahmed H. Abdel-Salam , Asmaa Mohamed","doi":"10.1016/j.chemosphere.2025.144360","DOIUrl":"10.1016/j.chemosphere.2025.144360","url":null,"abstract":"<div><div>This review provides a comprehensive analysis of eco-conscious flame retardants for enhancing fire resistance in natural fiber-reinforced polymer composites (NFRPCs). It examines current research methods, highlighting their advantages, limitations, and challenges in testing and evaluation. Traditional flame retardants and their drawbacks are discussed, emphasizing the benefits of NFRPCs and the potential of bio-based alternatives. The paper explores various types of bio-based flame retardants, their mechanisms of action, and their effectiveness in improving fire performance while maintaining material properties. Furthermore, the review delves into recent methodologies, functional groups, and the mechanisms involved in eco-friendly flame retardancy, analyzing their strengths, weaknesses, and emerging trends. Challenges related to compliance with industry standards, regulatory frameworks, and sustainable production practices are also addressed. The potential of utilizing waste biomass for flame retardancy is discussed, offering a pathway towards a circular economy. Additionally, the broader impacts on fire safety and hazard mitigation are explored. The review identifies key research gaps and future directions to advance the field of sustainable flame retardancy. Despite existing challenges, interdisciplinary collaboration is crucial in driving innovation and achieving sustainable fire safety solutions for composite materials.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"377 ","pages":"Article 144360"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716078","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}

引用次数: 0

Age, gender, and race differences in nasal morphology: Linking air conditioning and filtration efficiency to disparities in air pollution health outcomes and COVID-19 mortality

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144358

Alexander Ishmatov

COVID-19 mortality disparities underscore the critical role of environmental factors, age, sex, and racial demographics. This study investigates how individual variations in nasal morphology – specifically its air conditioning (temperature and humidity regulation) and filtration functions – may influence respiratory health and contribute to differential COVID-19 outcomes.

Analysis reveals significant differences in nasal structure and function across racial, sex, and age groups, demonstrating associations with disparities in respiratory vulnerability to environmental stressors such as air pollution, infectious aerosols, and climatic conditions. Specifically, wider nasal cavities (more common in certain populations), larger male nasal passages, and age-related changes like mucosal atrophy and increased endonasal volume impair air conditioning and filtration efficiency.

These morphological variations influence the nose's protective capacity, which is critical for shielding the middle and lower airways from environmental exposures. Populations with inherently reduced nasal filtration and conditioning efficiency demonstrate higher vulnerability, aligning with U.S. mortality patterns for both COVID-19 and air pollution across demographic groups. This suggests a direct link between nasal anatomy and population-level health disparities.

These findings provide novel insights into the role of nasal anatomy in mediating respiratory health disparities by modulating individual responses to environmental exposures, air pollution, and pathogens. They highlight the need to address critical gaps in understanding how airway characteristics influence susceptibility to environmental stressors and to develop targeted interventions aimed at reducing health disparities.

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引用次数: 0

Flood-borne pesticides are transferred from riparian soil via plants to phytophagous aphids

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144355

Franziska Fiolka, Timo Fuchs, Alexis P. Roodt, Alessandro Manfrin, Ralf Schulz

Surface waters are known to be polluted by a number of contaminants including synthetic pesticides. As flooding events intensify due to climate change, the flood-mediated transfer of pesticides to terrestrial ecosystems may also increase, potentially resulting in unforeseen exposure for terrestrial food-webs. To assess the uptake and trophic transfer of flood-mediated pesticide entries, we simulated riparian soil contamination caused by floodwater in a climate chamber pot experiment. The floodwater contained 31 fungicides and insecticides at environmentally relevant concentrations. We exposed potted stinging nettle plants (Urtica dioica) which were colonized by aphids to four sequential simulated flooding events and measured the pesticide concentrations in the soil, plant roots, plant stems and leaves, and aphids using HPLC-MS/MS. After four flooding events, the sum of insecticide and fungicide concentrations increased six-fold in soil and over thirty-fold in nettle plants compared to the concentrations after one flooding event. Bixafen and etofenprox showed the highest concentration in nettle leaves and stems, indicating bioaccumulation. After the four flooding events, thirteen pesticides were detected at concentrations up to 13.7 μg kg⁻¹ in the phytophagous aphids with picoxystrobin, fipronil, trifloxystrobin, spiroxamine, and fluopyram showing biomagnification. This study shows that commonly applied pesticides can be transferred to riparian soils by flooding events, taken up by plants and biomagnify in herbivorous insects.

{"title":"Flood-borne pesticides are transferred from riparian soil via plants to phytophagous aphids","authors":"Franziska Fiolka, Timo Fuchs, Alexis P. Roodt, Alessandro Manfrin, Ralf Schulz","doi":"10.1016/j.chemosphere.2025.144355","DOIUrl":"10.1016/j.chemosphere.2025.144355","url":null,"abstract":"<div><div>Surface waters are known to be polluted by a number of contaminants including synthetic pesticides. As flooding events intensify due to climate change, the flood-mediated transfer of pesticides to terrestrial ecosystems may also increase, potentially resulting in unforeseen exposure for terrestrial food-webs. To assess the uptake and trophic transfer of flood-mediated pesticide entries, we simulated riparian soil contamination caused by floodwater in a climate chamber pot experiment. The floodwater contained 31 fungicides and insecticides at environmentally relevant concentrations. We exposed potted stinging nettle plants (<em>Urtica dioica</em>) which were colonized by aphids to four sequential simulated flooding events and measured the pesticide concentrations in the soil, plant roots, plant stems and leaves, and aphids using HPLC-MS/MS. After four flooding events, the sum of insecticide and fungicide concentrations increased six-fold in soil and over thirty-fold in nettle plants compared to the concentrations after one flooding event. Bixafen and etofenprox showed the highest concentration in nettle leaves and stems, indicating bioaccumulation. After the four flooding events, thirteen pesticides were detected at concentrations up to 13.7 μg kg<sup>−1</sup> in the phytophagous aphids with picoxystrobin, fipronil, trifloxystrobin, spiroxamine, and fluopyram showing biomagnification. This study shows that commonly applied pesticides can be transferred to riparian soils by flooding events, taken up by plants and biomagnify in herbivorous insects.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"377 ","pages":"Article 144355"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704513","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}

引用次数: 0

Intersecting circular economy and child health: A scoping review of legacy brominated flame retardants in plastic childcare products and toys

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144354

Rebecca Mlelwa, Hanna-Andrea Rother

Polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD) are persistent organic pollutants (POPs) banned under the Stockholm Convention due to their severe health effects, including endocrine disruption, neurodevelopmental problems, and cancer. Historically used in electrical and electronic equipment (EEE), vehicles, furniture, and building materials, these chemicals persist in recycled plastics and have been found in children's products.

Our scoping review synthesized emerging literature to assess the extent of these chemicals in children's products. Of 799 initial results, 28 studies met our inclusion criteria after removing duplicates and excluding those that met exclusion criteria.

The 28 studies revealed widespread presence of legacy PBDEs and HBCDD in plastic childcare products and toys, including toys embedded in chocolates, often at concentrations exceeding the Basel Convention's low POP content limits. This widespread contamination stems from weak regulation of recycling practices in the circular economy, the use of recycled and potentially contaminated virgin plastics, and the absence of specific standards for POP-BFRs content in recycled plastics and children's products.

Children's unique vulnerabilities make this issue critical. Global actions are, therefore, needed to address this problem. The Basel Convention should adopt stricter POP content limits to prevent the recycling of plastics with high PBDEs and HBCDD levels. Both the Stockholm and Basel Conventions should establish safe limits for these chemicals in recycled plastics and ban contaminated recycled plastics in children's products to ensure a safer circular economy. Future research should apply a lifecycle approach to identify and mitigate all sources of legacy PBDEs and HBCDD in children's products.

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引用次数: 0

PCDD/Fs in human tissues: A review of global biomonitoring data

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144345

Jose L. Domingo, Martí Nadal

This review investigates the concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in internal human organs and tissues – excluding blood – with a particular focus on adipose tissue studies conducted worldwide up to January 2025. A thorough analysis of published literature highlights significant geographical and temporal trends in human PCDD/F exposure, including potential associations between PCDD/F levels and various health conditions. Several research gaps are identified, and proposals for future studies are given. Studies from Europe, Asia, and North America demonstrated a general decline in tissue PCDD/F concentrations over recent decades, particularly from the 1970s to early 2000s, attributed to successful emission control measures. Adipose tissue PCDD/F levels were typically higher in industrialized regions, with occupational exposure studies showing significantly elevated concentrations compared to the general population. Notable regional variations were observed, with some Asian countries continuing to show relatively high PCDD/F levels despite the overall declining trend. The review also highlighted potential associations between PCDD/F exposure and various health conditions, including endometriosis and cryptorchidism, though causal relationships remain unclear. Physiologically Based Pharmacokinetic (PBPK) modeling studies estimate valuable insights into the distribution and accumulation of these compounds in human tissues. Research gaps identified include limited data from developing countries and other underrepresented regions. It is also important to acknowledge the variability in analytical methods and reporting units across the reviewed studies, which may complicate direct comparisons of results. This review emphasizes the importance of continued biomonitoring efforts, particularly in underrepresented regions, to track exposure trends and protect vulnerable populations.

{"title":"PCDD/Fs in human tissues: A review of global biomonitoring data","authors":"Jose L. Domingo, Martí Nadal","doi":"10.1016/j.chemosphere.2025.144345","DOIUrl":"10.1016/j.chemosphere.2025.144345","url":null,"abstract":"<div><div>This review investigates the concentrations of polychlorinated dibenzo-<em>p</em>-dioxins and dibenzofurans (PCDD/Fs) in internal human organs and tissues – excluding blood – with a particular focus on adipose tissue studies conducted worldwide up to January 2025. A thorough analysis of published literature highlights significant geographical and temporal trends in human PCDD/F exposure, including potential associations between PCDD/F levels and various health conditions. Several research gaps are identified, and proposals for future studies are given. Studies from Europe, Asia, and North America demonstrated a general decline in tissue PCDD/F concentrations over recent decades, particularly from the 1970s to early 2000s, attributed to successful emission control measures. Adipose tissue PCDD/F levels were typically higher in industrialized regions, with occupational exposure studies showing significantly elevated concentrations compared to the general population. Notable regional variations were observed, with some Asian countries continuing to show relatively high PCDD/F levels despite the overall declining trend. The review also highlighted potential associations between PCDD/F exposure and various health conditions, including endometriosis and cryptorchidism, though causal relationships remain unclear. Physiologically Based Pharmacokinetic (PBPK) modeling studies estimate valuable insights into the distribution and accumulation of these compounds in human tissues. Research gaps identified include limited data from developing countries and other underrepresented regions. It is also important to acknowledge the variability in analytical methods and reporting units across the reviewed studies, which may complicate direct comparisons of results. This review emphasizes the importance of continued biomonitoring efforts, particularly in underrepresented regions, to track exposure trends and protect vulnerable populations.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"377 ","pages":"Article 144345"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716011","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}

引用次数: 0

Addressing plastic pollution: A 3D-printed porous PAC scaffold for effective nanoplastic removal

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144351

Namyeon Kim , Da-Yeon Kim , Yunsoo Chang , Eui-Man Jung , Seung-Woo Lee , Eun-Hee Lee

The extensive presence of nanoplastics has raised concerns about their effects on ecosystems and human health. Because of the heightened ecological and biological risks posed by nanoplastics, effective removal strategies for these particles are essential. This study focuses on the use of additive manufacturing techniques to fabricate a three-dimensional (3D) structure with integrated powdered activated carbon (PAC) as an active adsorbent for the removal of various types of polymer nanoplastics. The 3D-printed porous PAC scaffold was characterized using various analysis methods, and its adsorption kinetics and mechanisms for polystyrene (PS) nanoplastics were elucidated. The 3D PAC's versatility was verified against several other nanoplastics, including polyethylene terephthalate, low-density polyethylene, polypropylene, and polyvinyl chloride. The results demonstrated that the 3D PAC scaffold effectively adsorbs PS nanoplastics through pore filling and chemical processes and that the adsorption exhibits pseudo-first-order kinetics and conforms to the Langmuir isotherm model. The 3D PAC maintained its adsorption performance under various environmental conditions and exhibited promising results when used to remove nanoplastics from real freshwater samples. This research demonstrates the potential of 3D-printed PACs to address the growing challenge of plastic pollution.

{"title":"Addressing plastic pollution: A 3D-printed porous PAC scaffold for effective nanoplastic removal","authors":"Namyeon Kim , Da-Yeon Kim , Yunsoo Chang , Eui-Man Jung , Seung-Woo Lee , Eun-Hee Lee","doi":"10.1016/j.chemosphere.2025.144351","DOIUrl":"10.1016/j.chemosphere.2025.144351","url":null,"abstract":"<div><div>The extensive presence of nanoplastics has raised concerns about their effects on ecosystems and human health. Because of the heightened ecological and biological risks posed by nanoplastics, effective removal strategies for these particles are essential. This study focuses on the use of additive manufacturing techniques to fabricate a three-dimensional (3D) structure with integrated powdered activated carbon (PAC) as an active adsorbent for the removal of various types of polymer nanoplastics. The 3D-printed porous PAC scaffold was characterized using various analysis methods, and its adsorption kinetics and mechanisms for polystyrene (PS) nanoplastics were elucidated. The 3D PAC's versatility was verified against several other nanoplastics, including polyethylene terephthalate, low-density polyethylene, polypropylene, and polyvinyl chloride. The results demonstrated that the 3D PAC scaffold effectively adsorbs PS nanoplastics through pore filling and chemical processes and that the adsorption exhibits pseudo-first-order kinetics and conforms to the Langmuir isotherm model. The 3D PAC maintained its adsorption performance under various environmental conditions and exhibited promising results when used to remove nanoplastics from real freshwater samples. This research demonstrates the potential of 3D-printed PACs to address the growing challenge of plastic pollution.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"377 ","pages":"Article 144351"},"PeriodicalIF":8.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704512","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}

引用次数: 0

PFAS removal via adsorption: A synergistic review on advances of experimental and computational approaches

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-27 DOI: 10.1016/j.chemosphere.2025.144323

Hansini Abeysinghe , Xingmao Ma , Mesfin Tsige

Per- and polyfluoroalkyl substances (PFAS), commonly known as “forever chemicals”, have become a major focus of current research due to their toxicity and persistence in the environment. These synthetic compounds are notoriously difficult to degrade, accumulating in water systems and posing long-term health and environmental risks. Adsorption is one of the most investigated technologies for PFAS removal. This review comprehensively reviewed the PFAS adsorption process, focusing not only on the adsorption itself, but also on the behavior of PFAS in the aquatic environment prior to adsorption because these behaviors directly affect PFAS adsorption. Significantly, this review summarized in detail the advances made in PFAS adsorption from the computational approach and emphasized the importance of integrated experimental and computational studies in gaining molecular-level understanding on the adsorption mechanisms of PFAS. Toward the end, the review identified several critical research gaps and suggested key interdisciplinary research needs for further advancing our understanding on PFAS adsorption.

全氟和多氟烷基物质（PFAS）通常被称为 "永恒的化学品"，由于其毒性和在环境中的持久性，已成为当前研究的主要焦点。众所周知，这些合成化合物很难降解，会在水系统中累积，对健康和环境造成长期危害。吸附技术是目前研究最多的去除 PFAS 的技术之一。本综述全面回顾了全氟辛烷磺酸的吸附过程，不仅关注吸附本身，还关注吸附前全氟辛烷磺酸在水生环境中的行为，因为这些行为会直接影响全氟辛烷磺酸的吸附。重要的是，这篇综述详细总结了计算方法在吸附 PFAS 方面取得的进展，并强调了综合实验和计算研究对于从分子层面了解 PFAS 吸附机理的重要性。最后，综述指出了几个关键的研究空白，并提出了关键的跨学科研究需求，以进一步加深我们对 PFAS 吸附的理解。

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引用次数: 0

Microplastic release from coronary catheters: Insights from catheter analysis

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-26 DOI: 10.1016/j.chemosphere.2025.144343

M. Dewika , N. Kantha , Kalaimani Markandan , Shalini Nagaratnam , N Ahmad Irfan , Mohammad Khalid

引用次数: 0

Do (xeno)estrogens pose a risk to earthworms? Soy isoflavones and estradiol impact gonad structure and induce oxidative stress in Eisenia fetida

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere

Pub Date : 2025-03-26 DOI: 10.1016/j.chemosphere.2025.144315

Tiago Azevedo , Rita Silva-Reis , Beatriz Medeiros-Fonseca , Mariana Gonçalves , Gabriel Mendes , Marta Roboredo , Maria J. Rocha , Francisco Peixoto , Maria de Lurdes Pinto , Manuela Matos , João R. Sousa , Paula A. Oliveira , Ana M. Coimbra

Understanding the impact of endocrine disruptor compounds (EDCs) across a wide range of species is crucial, given their ubiquitous presence. Although invertebrate species lack sex steroid hormone pathways, they exhibit sensitivity to EDCs, which could affect population dynamics. This study assessed reproductive endpoints and oxidative stress parameters in Eisenia fetida following exposure to estradiol and soy isoflavones, resembling the concentrations found in livestock manure. The experiment used artificial soil, as recommended by OECD guidelines (7:2:1 sand, kaolin and peat). Adult specimens were randomly divided into seven groups (n = 11/replicate): one control, three estradiol (156.1, 283.4 and 633.8 μg/kg of dry soil) and three soy isoflavones (113.0, 215.3 and 405.0 mg/kg of dry soil) concentrations. After eight weeks, samples were collected for cytological, histological and biochemical analysis. Offspring development was assessed after 12 additional weeks. Higher estradiol and isoflavone concentrations led to lower germ cell number and increased abnormalities, especially in the seminal vesicles and ovaries. Catalase and peroxidase activities were significantly increased in all treated groups. The exposure did not significantly affect the number of E. fetida offspring. These findings highlight E. fetida's sensitivity to EDCs at a biochemical and tissue level, suggesting its use as a bioindicator for assessing EDC contamination in soils.

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引用次数: 0