Marine pollution bulletin最新文献_第4页

Source apportionment and ecological risks of trace metals in multiple media in a typical Chinese industrialized bay on the basis of SOM, PMF and GIS methods 基于SOM、PMF和GIS方法的中国典型工业化海湾多介质痕量金属来源解析及生态风险

IF 5.8 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2025.119039

Yuhong Lin, Yang Liu, Yi Tan, Nan Wu, Lingqing Wang, Jinmin Chen, Xiuwu Sun, Xu Dong, Baohong Chen, Zhong Pan, Weili Wang, Cai Lin

引用次数: 0

Heavy metal infiltration in coastal sediments: Bioaccumulation pathways and toxicological repercussions on Perinereis aibuhitensis 沿海沉积物中重金属的渗透：对aibuhitperinereis的生物积累途径和毒理学影响

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119263

Ashraf Mehreen , Xiaoshou Liu

Heavy metals, while naturally occurring, have seen their biogeochemical cycles significantly disrupted by anthropogenic activities, leading to widespread environmental contamination. Their persistence, bioaccumulative potential, and toxicity pose severe risks to marine ecosystems and human health. This review examines the ecotoxicological impacts of key heavy metals cadmium (Cd), lead (Pb), mercury (Hg), copper (Cu), and zinc (Zn) derived from industrial, agricultural, and urban sources on Perinereis aibuhitensis, a keystone polychaete species in coastal and estuarine ecosystems. P. aibuhitensis plays a vital role in sediment bioturbation, nutrient cycling, and benthic-pelagic coupling, making it a critical bioindicator for assessing metal pollution. Exposure to elevated metal concentrations induces sublethal effects, including oxidative stress, metabolic disruption, neurotoxicity, and behavioral alterations, which can cascade through food webs. However, interactions between metal bioavailability, sediment geochemistry and co-occurring stressors and most available studies are short-term and focus on single metals, so chronic low-dose exposures, metal mixtures and links to ecosystem processes remain poorly understood, necessitating further mechanistic studies. This review highlights the urgent need for integrated monitoring frameworks and remediation strategies to mitigate heavy metal pollution in marine environments. Future research should prioritize elucidating molecular pathways of toxicity in P. aibuhitensis and its implications for ecosystem resilience.

重金属虽然是自然产生的，但其生物地球化学循环受到人为活动的严重破坏，导致广泛的环境污染。它们的持久性、生物蓄积性和毒性对海洋生态系统和人类健康构成严重风险。本文综述了工业、农业和城市环境中镉（Cd）、铅（Pb）、汞（Hg）、铜（Cu）和锌（Zn）等主要重金属对沿海和河口生态系统中重要的多毛纲物种aibuhitperinereis的生态毒理学影响。P. aibuhitensis在沉积物生物扰动、养分循环和底-海耦合中起着重要作用，是评价金属污染的重要生物指标。暴露于高浓度的金属中会引起亚致死效应，包括氧化应激、代谢紊乱、神经毒性和行为改变，这些影响会通过食物网级联产生。然而，金属生物利用度、沉积物地球化学和共同发生的压力源之间的相互作用以及大多数现有的研究都是短期的，并且集中在单一金属上，因此对慢性低剂量暴露、金属混合物和与生态系统过程的联系仍然知之甚少，需要进一步的机制研究。这篇综述强调了迫切需要建立综合监测框架和补救战略，以减轻海洋环境中的重金属污染。未来的研究应优先阐明aibuhitensis毒性的分子途径及其对生态系统恢复力的影响。

{"title":"Heavy metal infiltration in coastal sediments: Bioaccumulation pathways and toxicological repercussions on Perinereis aibuhitensis","authors":"Ashraf Mehreen , Xiaoshou Liu","doi":"10.1016/j.marpolbul.2026.119263","DOIUrl":"10.1016/j.marpolbul.2026.119263","url":null,"abstract":"<div><div>Heavy metals, while naturally occurring, have seen their biogeochemical cycles significantly disrupted by anthropogenic activities, leading to widespread environmental contamination. Their persistence, bioaccumulative potential, and toxicity pose severe risks to marine ecosystems and human health. This review examines the ecotoxicological impacts of key heavy metals cadmium (Cd), lead (Pb), mercury (Hg), copper (Cu), and zinc (Zn) derived from industrial, agricultural, and urban sources on <em>Perinereis aibuhitensis</em>, a keystone polychaete species in coastal and estuarine ecosystems. <em>P. aibuhitensis</em> plays a vital role in sediment bioturbation, nutrient cycling, and benthic-pelagic coupling, making it a critical bioindicator for assessing metal pollution. Exposure to elevated metal concentrations induces sublethal effects, including oxidative stress, metabolic disruption, neurotoxicity, and behavioral alterations, which can cascade through food webs. However, interactions between metal bioavailability, sediment geochemistry and co-occurring stressors and most available studies are short-term and focus on single metals, so chronic low-dose exposures, metal mixtures and links to ecosystem processes remain poorly understood, necessitating further mechanistic studies. This review highlights the urgent need for integrated monitoring frameworks and remediation strategies to mitigate heavy metal pollution in marine environments. Future research should prioritize elucidating molecular pathways of toxicity in <em>P. aibuhitensis</em> and its implications for ecosystem resilience.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119263"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The roles of sea cucumber Apostichopus japonicas mediating functional microbial communities to promote sediment N cycling 海参参介导功能微生物群落促进沉积物氮循环的作用

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119276

Yu Yu , Mengshu Wang , Jinye Wang , Xianliang Meng , Ruiyong Fan , Qing Li , Yichao Ren

Sea cucumbers serve as key ecological engineers in coastal marine ecosystems by enhancing nutrient cycling. However, the mechanistic effects of sea cucumber activity on benthic nitrogen (N)-cycling across the sediment-water interface (SWI) remains poorly understood. Through quarterly field investigation in both a sea cucumber culture pond (S) and a reference non-culture pond (NS), we assessed and compared the seasonal dynamics of dissolved inorganic nitrogen (DIN) fluxes across the SWI, sedimentary N pools, N-cycling gene abundances, and functional microbial communities. The results showed that during the active feeding periods (spring and autumn), sea cucumber grazing significantly reduced sedimentary nitrogen pools (both organic and inorganic) and suppressed the abundances of N-cycling genes. Consequently, NH₄⁺ efflux from sediment and NO₃⁻ uptake flux from the water column decreased. In contrast, during summer aestivation, markedly increase in both NH₄⁺ efflux and NO₃⁻ influx into sediment were observed, driven by a combination of elevated sedimentary organic nitrogen, higher temperature, and enhanced ammonification, denitrification and DNRA (dissimilator nitrate reduction to ammonium) activity, as indicated by upregulated nrfA and nirS gene abundances. Furthermore, sea cucumber consistently reduced sedimentary microbial diversity year-round, while inducing seasonal shifts in community composition. Despite the challenges of unquantified density effects and a single observational cycle of summer aestivation and reduced winter activity, this study demonstrates a tight coupling among sea cucumber activity, sedimentary nitrogen dynamics and microbial community. It highlights the important role of sediment microbiota in mediating N cycling processes under the influence of sea cucumbers.

海参在海岸带海洋生态系统中起着促进养分循环的重要生态工程师作用。然而，海参活性对底底生物氮(N)在沉积物-水界面（SWI）循环的机制影响尚不清楚。通过对一个海参养殖池(S)和一个参考非养殖池（NS）的季度实地调查，我们评估并比较了SWI中溶解无机氮（DIN）通量、沉积氮池、氮循环基因丰度和功能微生物群落的季节性动态。结果表明，在取食活跃期（春季和秋季），海参放牧显著减少了沉积氮库（有机和无机），抑制了氮循环基因的丰度。因此，沉积物的NH4+外排和水柱的NO3−吸收通量减少。相比之下，在夏季夏季，沉积物中NH4+外排和NO3−内流均显著增加，这是由沉积有机氮升高、温度升高以及氨化、反硝化和DNRA（硝酸还原成铵）活性增强共同驱动的，这可以通过nrfA和nirS基因丰度的上调来证明。此外，海参全年持续减少沉积微生物多样性，同时引起群落组成的季节性变化。尽管存在密度效应无法量化以及夏季活度和冬季活度减少的单一观测周期的挑战，但本研究表明海参活度与沉积氮动态和微生物群落之间存在紧密耦合。强调了海参影响下沉积物微生物群在调节氮循环过程中的重要作用。

{"title":"The roles of sea cucumber Apostichopus japonicas mediating functional microbial communities to promote sediment N cycling","authors":"Yu Yu , Mengshu Wang , Jinye Wang , Xianliang Meng , Ruiyong Fan , Qing Li , Yichao Ren","doi":"10.1016/j.marpolbul.2026.119276","DOIUrl":"10.1016/j.marpolbul.2026.119276","url":null,"abstract":"<div><div>Sea cucumbers serve as key ecological engineers in coastal marine ecosystems by enhancing nutrient cycling. However, the mechanistic effects of sea cucumber activity on benthic nitrogen (N)-cycling across the sediment-water interface (SWI) remains poorly understood. Through quarterly field investigation in both a sea cucumber culture pond (S) and a reference non-culture pond (NS), we assessed and compared the seasonal dynamics of dissolved inorganic nitrogen (DIN) fluxes across the SWI, sedimentary N pools, N-cycling gene abundances, and functional microbial communities. The results showed that during the active feeding periods (spring and autumn), sea cucumber grazing significantly reduced sedimentary nitrogen pools (both organic and inorganic) and suppressed the abundances of N-cycling genes. Consequently, NH<sub>4</sub><sup>+</sup> efflux from sediment and NO<sub>3</sub><sup>−</sup> uptake flux from the water column decreased. In contrast, during summer aestivation, markedly increase in both NH<sub>4</sub><sup>+</sup> efflux and NO<sub>3</sub><sup>−</sup> influx into sediment were observed, driven by a combination of elevated sedimentary organic nitrogen, higher temperature, and enhanced ammonification, denitrification and DNRA (dissimilator nitrate reduction to ammonium) activity, as indicated by upregulated <em>nrfA and nirS</em> gene abundances. Furthermore, sea cucumber consistently reduced sedimentary microbial diversity year-round, while inducing seasonal shifts in community composition. Despite the challenges of unquantified density effects and a single observational cycle of summer aestivation and reduced winter activity, this study demonstrates a tight coupling among sea cucumber activity, sedimentary nitrogen dynamics and microbial community. It highlights the important role of sediment microbiota in mediating N cycling processes under the influence of sea cucumbers.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119276"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Geochronological variations of PAHs in sediments from a preserved tropical estuary, Northeast Brazil 巴西东北部保存的热带河口沉积物中多环芳烃的年代学变化

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119292

Luanna Maia Carneiro , José Marques Lopes , Ademir Xavier da Silva , Taise Bomfim de Jesus , Gisele Mara Hadlich

Historical PAHs contamination is well documented in urbanized estuaries; however, their dynamics in tropical ecosystems considered relatively preserved remain poorly investigated. This study reconstructs the historical deposition of PAHs in the Serinhaém Estuary, a tropical Environmental Protection Area in Northeastern Brazil, quantifying their concentrations, distinguishing their sources, and assessing the associated ecological risks. To achieve these objectives, five sediment cores were collected, dated using ²¹⁰Pb geochronology, and analyzed by gas chromatography. Diagnostic ratios and multivariate statistical analyses were applied to identify contaminant sources and distribution patterns. The sedimentation rate was approximately 2.5 ± 0.1 mm·year⁻¹. Results showed that cores C1 to C4 were dominated by high-molecular weight PAHs of predominantly pyrogenic origin, likely associated with regional biomass burning. In contrast, core C5, located downstream, displayed low concentrations with petrogenic signatures, suggesting inputs related to maritime activities. Core C3 exhibited the highest total concentration (Σ16PAHs = 1508 ng·g⁻¹), with a pronounced peak in the early 2000s. In this layer, compounds such as fluoranthene (154.36 ng.g⁻¹), benzo[a]anthracene (138.55 ng.g⁻¹), chrysene (138.91 ng.g⁻¹), benzo[a]pyrene (153.86 ng.g⁻¹), and dibenzo[a,h]anthracene (42.64 ng.g⁻¹) exceeded threshold effect levels (TEL), indicating potential ecological risk. Multivariate analyses confirmed both vertical and lateral heterogeneity, highlighting specific episodes of increased contaminant input. Although overall concentrations ranged from low to moderate, distinct contamination events were identified, reflecting contributions from both diffuse and localized sources. These findings demonstrate that even legally protected estuaries remain vulnerable to anthropogenic pressures. Reconstructing sedimentary records proves essential for understanding the history of contamination and underscores the need for continuous monitoring to support effective conservation strategies.

历史上的多环芳烃污染在城市化的河口有很好的记录；然而，它们在被认为相对保存的热带生态系统中的动态研究仍然很少。本研究重建了巴西东北部热带环境保护区serhasimim河口多环芳烃的历史沉积，量化了其浓度，区分了其来源，并评估了其生态风险。为了实现这些目标，收集了5个沉积物岩心，用210Pb年代学测定了年代，并用气相色谱法进行了分析。诊断比率和多元统计分析用于确定污染源和分布模式。沉降速率约为2.5±0.1 mm·年−1。结果表明，岩心C1 ~ C4以高分子量多环芳烃为主，可能与区域生物质燃烧有关。相比之下，位于下游的C5岩心浓度较低，具有岩石成因特征，表明其输入与海洋活动有关。核心C3的总浓度最高（Σ16PAHs = 1508 ng·g−1），在21世纪初达到峰值。在这一层中，氟蒽（154.36 ng）等化合物。G−1)，苯并[a]蒽（138.55 ng）。G−1),chrysene (138.91 ng；G−1)，苯并[a]芘(153.86 ng；G−1)，二苯并[a，h]蒽（42.64 ng）。g−1)超过阈值效应水平（TEL），表明潜在的生态风险。多变量分析证实了垂直和横向异质性，突出了污染物输入增加的特定事件。虽然总体浓度从低到中等不等，但确定了不同的污染事件，反映了扩散源和局部源的贡献。这些发现表明，即使是受法律保护的河口也容易受到人为压力的影响。重建沉积记录对了解污染历史至关重要，并强调需要持续监测以支持有效的保护策略。

{"title":"Geochronological variations of PAHs in sediments from a preserved tropical estuary, Northeast Brazil","authors":"Luanna Maia Carneiro , José Marques Lopes , Ademir Xavier da Silva , Taise Bomfim de Jesus , Gisele Mara Hadlich","doi":"10.1016/j.marpolbul.2026.119292","DOIUrl":"10.1016/j.marpolbul.2026.119292","url":null,"abstract":"<div><div>Historical PAHs contamination is well documented in urbanized estuaries; however, their dynamics in tropical ecosystems considered relatively preserved remain poorly investigated. This study reconstructs the historical deposition of PAHs in the Serinhaém Estuary, a tropical Environmental Protection Area in Northeastern Brazil, quantifying their concentrations, distinguishing their sources, and assessing the associated ecological risks. To achieve these objectives, five sediment cores were collected, dated using <sup>210</sup>Pb geochronology, and analyzed by gas chromatography. Diagnostic ratios and multivariate statistical analyses were applied to identify contaminant sources and distribution patterns. The sedimentation rate was approximately 2.5 ± 0.1 mm·year<sup>−1</sup>. Results showed that cores C1 to C4 were dominated by high-molecular weight PAHs of predominantly pyrogenic origin, likely associated with regional biomass burning. In contrast, core C5, located downstream, displayed low concentrations with petrogenic signatures, suggesting inputs related to maritime activities. Core C3 exhibited the highest total concentration (Σ16PAHs = 1508 ng·g<sup>−1</sup>), with a pronounced peak in the early 2000s. In this layer, compounds such as fluoranthene (154.36 ng.g<sup>−1</sup>), benzo[<em>a</em>]anthracene (138.55 ng.g<sup>−1</sup>), chrysene (138.91 ng.g<sup>−1</sup>), benzo[<em>a</em>]pyrene (153.86 ng.g<sup>−1</sup>), and dibenzo[<em>a</em>,<em>h</em>]anthracene (42.64 ng.g<sup>−1</sup>) exceeded threshold effect levels (TEL), indicating potential ecological risk. Multivariate analyses confirmed both vertical and lateral heterogeneity, highlighting specific episodes of increased contaminant input. Although overall concentrations ranged from low to moderate, distinct contamination events were identified, reflecting contributions from both diffuse and localized sources. These findings demonstrate that even legally protected estuaries remain vulnerable to anthropogenic pressures. Reconstructing sedimentary records proves essential for understanding the history of contamination and underscores the need for continuous monitoring to support effective conservation strategies.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119292"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dominant effects of the antiepileptic drug carbamazepine over climate change stressors on Mytilus galloprovincialis toxicity 抗癫痫药物卡马西平对气候变化应激源对紫贻贝毒性的主导作用

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2025.119205

Farhat-Un-Nisá N. Bajwa , Marta Cunha , Juliano M. Vilke , Bruno D.D. Fragoso , Rodrigo Borges , Amadeu M.V.M. Soares , Rosa Freitas , Tainá G. Fonseca

Pharmaceuticals have become ubiquitous in marine realms, raising concerns about their ecological effects. This study investigates the ecotoxicological impact of the antiepileptic drug carbamazepine on marine mussels (Mytilus galloprovincialis) under increased seawater temperature and salinity, reflecting projected climate change scenarios. Mussels were exposed to carbamazepine (CBZ, 5 μg L⁻¹) for 28 days in both current (17 °C and salinity 35) and predicted (23 °C and salinity 40) conditions. A multiple-biomarker approach was employed to assess alterations in energy balance, antioxidant and biotransformation systems, membrane damage, neurotoxicity, and genotoxicity in gills and digestive glands. The results indicated that CBZ caused significant oxidative stress, disruption in energy metabolism, and neurotoxic and genotoxic effects, regardless of the combination of stressors. Moreover, biomarkers were modulated by the time of exposure, suggesting a time-specific response in mussels exposed to either a single or multiple stressors. The findings underscore the complex interplay between pharmaceutical pollution and climate change stressors. This study provides crucial insights into the toxicity of pharmaceuticals in marine environments under future climate change scenarios. To our knowledge, this is the first study to investigate the effects of CBZ on marine mussels in conjunction with the simultaneous rise in seawater temperature and salinity.

药物在海洋领域已经无处不在，这引起了人们对其生态影响的担忧。本研究探讨了在海水温度和盐度升高的情况下，抗癫痫药物卡马西平对海洋贻贝（Mytilus galloprovincialis）的生态毒理学影响。在当前（17°C，盐度35）和预测（23°C，盐度40）条件下，贻贝暴露于卡马西平（CBZ, 5 μg L−1）28天。采用多生物标志物方法评估能量平衡、抗氧化和生物转化系统、膜损伤、神经毒性和鳃和消化腺的遗传毒性的变化。结果表明，无论应激源组合如何，CBZ都会引起显著的氧化应激、能量代谢紊乱以及神经毒性和遗传毒性效应。此外，生物标志物受到暴露时间的调节，表明贻贝暴露于单一或多个压力源时具有时间特异性反应。这些发现强调了药品污染与气候变化压力因素之间复杂的相互作用。这项研究为未来气候变化情景下海洋环境中药物的毒性提供了重要的见解。据我们所知，这是第一次研究CBZ在海水温度和盐度同时上升的情况下对贻贝的影响。

{"title":"Dominant effects of the antiepileptic drug carbamazepine over climate change stressors on Mytilus galloprovincialis toxicity","authors":"Farhat-Un-Nisá N. Bajwa , Marta Cunha , Juliano M. Vilke , Bruno D.D. Fragoso , Rodrigo Borges , Amadeu M.V.M. Soares , Rosa Freitas , Tainá G. Fonseca","doi":"10.1016/j.marpolbul.2025.119205","DOIUrl":"10.1016/j.marpolbul.2025.119205","url":null,"abstract":"<div><div>Pharmaceuticals have become ubiquitous in marine realms, raising concerns about their ecological effects. This study investigates the ecotoxicological impact of the antiepileptic drug carbamazepine on marine mussels (<em>Mytilus galloprovincialis</em>) under increased seawater temperature and salinity, reflecting projected climate change scenarios. Mussels were exposed to carbamazepine (CBZ, 5 μg L<sup>−1</sup>) for 28 days in both current (17 °C and salinity 35) and predicted (23 °C and salinity 40) conditions. A multiple-biomarker approach was employed to assess alterations in energy balance, antioxidant and biotransformation systems, membrane damage, neurotoxicity, and genotoxicity in gills and digestive glands. The results indicated that CBZ caused significant oxidative stress, disruption in energy metabolism, and neurotoxic and genotoxic effects, regardless of the combination of stressors. Moreover, biomarkers were modulated by the time of exposure, suggesting a time-specific response in mussels exposed to either a single or multiple stressors. The findings underscore the complex interplay between pharmaceutical pollution and climate change stressors. This study provides crucial insights into the toxicity of pharmaceuticals in marine environments under future climate change scenarios. To our knowledge, this is the first study to investigate the effects of CBZ on marine mussels in conjunction with the simultaneous rise in seawater temperature and salinity.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119205"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Ultrastructural alterations in gill, stomach and intestine of two coastal fish species collected from PAHs contaminated area at Digha coastal belt 迪加海岸带多环芳烃污染区两种滨海鱼类鳃、胃和肠超微结构的变化

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2025.119212

Atanu Patra , Srinivasan Balachandran , Sugata Das , Niladri Sekhar Mondal , Subhas Das , Apurba Ratan Ghosh

Digha is an ideal seaside resort town; its beautiful beaches attract about 2 million people/year. It is also an important site for biodiversity and fishery resources that contribute to the national economy. PAHs are the common organic pollutants in the coastal areas, especially in the harbouring areas, that pose significant risk to the coastal ecosystem as well as human health. Present study intends to analyse the probable threat of polycyclic aromatic hydrocarbons (PAHs) contamination to the coastal ecosystem, particularly to the coastal fish species (Mystus sp. and Mugil sp.). For this we studied the concentration of different PAHs compounds in the coastal water and bottom sediment by GC–MS analysis as well as cellular and subcellular alterations in the gill, stomach, and intestine of that two intoxicated fish species through scanning electron microscopy (SEM). Result revealed the high concentration of PAHs in the coastal water of different study area ranging from 133 to 248.49 ppb, comprising naphthalene, fluorene, and indeno[1,2,3-c,d]pyrene as predominant compounds; concentration in the sediment was higher than the water it varies from 92,009.23 to 100,736.2 ppb, dominated by chrysene, benz[a]anthracene, benzo fluoranthene, and indeno[1,2,3-c,d]pyrene. Ultramicroscopic observations revealed the major cellular and topological distortions in the gill, stomach, and intestine, such as breakage and damage of the gill rakers, clubbing of the gill lamellae, degeneration, fragmentation, excess mucus secretion, loss of normal texture of duodenal villi, and disorganization of columnar epithelial cells (CECs). So, the present study has established a serious impact of PAHs contamination on fish species which may also subsequently affect the human health and coastal ecosystem as a whole.

迪加是一个理想的海滨度假小镇；它美丽的海滩每年吸引约200万人。它也是对国民经济有贡献的生物多样性和渔业资源的重要场所。多环芳烃是沿海地区，特别是港口地区常见的有机污染物，对沿海生态系统和人类健康构成重大威胁。本研究旨在分析多环芳烃（PAHs）污染对沿海生态系统，特别是对沿海鱼类（Mystus sp.和Mugil sp.）的可能威胁。为此，我们通过气相色谱-质谱分析研究了沿海水域和底部沉积物中不同多环芳烃化合物的浓度，并通过扫描电子显微镜（SEM）研究了两种中毒鱼类的鳃、胃和肠道的细胞和亚细胞变化。结果表明：各研究区沿海水体中多环芳烃的浓度在133 ~ 248.49 ppb之间，以萘、芴和茚[1,2,3-c，d]芘为主要化合物；沉积物中的浓度高于水中，从92,009.23到100,736.2 ppb不等，主要是芘、苯并[a]蒽、苯并荧光蒽和茚二[1,2,3-c，d]芘。超微显微镜观察显示，鳃、胃和肠的主要细胞和拓扑结构扭曲，如鳃耙断裂和损伤，鳃片棒状，变性，碎裂，粘液分泌过多，十二指肠绒毛失去正常质地，柱状上皮细胞（CECs）紊乱。因此，本研究已经确定了多环芳烃污染对鱼类的严重影响，并可能随后影响人类健康和整个沿海生态系统。

{"title":"Ultrastructural alterations in gill, stomach and intestine of two coastal fish species collected from PAHs contaminated area at Digha coastal belt","authors":"Atanu Patra , Srinivasan Balachandran , Sugata Das , Niladri Sekhar Mondal , Subhas Das , Apurba Ratan Ghosh","doi":"10.1016/j.marpolbul.2025.119212","DOIUrl":"10.1016/j.marpolbul.2025.119212","url":null,"abstract":"<div><div>Digha is an ideal seaside resort town; its beautiful beaches attract about 2 million people/year. It is also an important site for biodiversity and fishery resources that contribute to the national economy. PAHs are the common organic pollutants in the coastal areas, especially in the harbouring areas, that pose significant risk to the coastal ecosystem as well as human health. Present study intends to analyse the probable threat of polycyclic aromatic hydrocarbons (PAHs) contamination to the coastal ecosystem, particularly to the coastal fish species (<em>Mystus</em> sp. and <em>Mugil</em> sp.). For this we studied the concentration of different PAHs compounds in the coastal water and bottom sediment by GC–MS analysis as well as cellular and subcellular alterations in the gill, stomach, and intestine of that two intoxicated fish species through scanning electron microscopy (SEM). Result revealed the high concentration of PAHs in the coastal water of different study area ranging from 133 to 248.49 ppb, comprising naphthalene, fluorene, and indeno[1,2,3-c,d]pyrene as predominant compounds; concentration in the sediment was higher than the water it varies from 92,009.23 to 100,736.2 ppb, dominated by chrysene, benz[<em>a</em>]anthracene, benzo fluoranthene, and indeno[1,2,3-c,d]pyrene. Ultramicroscopic observations revealed the major cellular and topological distortions in the gill, stomach, and intestine, such as breakage and damage of the gill rakers, clubbing of the gill lamellae, degeneration, fragmentation, excess mucus secretion, loss of normal texture of duodenal villi, and disorganization of columnar epithelial cells (CECs). So, the present study has established a serious impact of PAHs contamination on fish species which may also subsequently affect the human health and coastal ecosystem as a whole.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119212"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

DCDGNet: Dual-frequency cross-feature diffusion GAN for single fusion sonar image generation in exposed subsea pipeline inspection DCDGNet：用于暴露海底管道检测中单融合声纳图像生成的双频交叉特征扩散GAN

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119289

Jingyao Zhang , Xuerong Cui , Song Dai , Juan Li , Lei Li

The exposed subsea pipelines are prone to damage and rupture, increasing the risk of marine pollution; therefore, their safety inspection is imperative. Multibeam Echo Sounder (MBES) and Side-Scan Sonar (SSS) are widely utilized in this task, and their fusion data improves inspection accuracy. However, the limited availability of fusion sonar images with exposed pipelines constrains deep learning performance. Although image generation can ease data scarcity, traditional methods still require large annotated datasets. To address, this paper proposes a Dual-Frequency Cross-feature Diffusion GAN (DCDGNet) for generating fused sonar images of subsea pipelines. The model can generate diverse samples from a single image. To avoid artifacts from spatial modeling, frequency decomposition is applied. Three key modules are designed: the Dual-Frequency Cross-Transformer Fusion Module (DF-CTFM) for global semantic fusion, the Dual-Frequency Collaborative Enhancement Module (DF-CEM) for local detail enhancement, and the Feature Diffusion Module (FDM) for multi-stage feature diffusion. In addition, a label synchronization mechanism enables automatic annotation during image generation process. Evaluations using Fréchet Inception Distance (FID), Kernel Inception Distance (KID) and Inception Score (IS) show that DCDGNet clearly outperforms existing methods in structural fidelity and detail preservation. It achieves a Fréchet Inception Distance of 231.96, a 25.4 percent reduction compared with the second-best method, a Kernel Inception Distance of 0.34, a 21 percent reduction, and an Inception Score of 2.93, a 10.6 percent improvement. Furthermore, UNet++ segmentation shows that generated samples perform comparably to real ones, and data augmentation further enhances exposed pipeline segmentation. Thus, DCDGNet improves detection accuracy and reduces marine pollution risk.

暴露的海底管道容易损坏和破裂，增加了海洋污染的风险；因此，对它们进行安全检查势在必行。多波束回声测深仪（MBES）和侧扫声纳（SSS）广泛应用于该任务，它们的融合数据提高了检测精度。然而，具有暴露管道的融合声纳图像的有限可用性限制了深度学习的性能。虽然图像生成可以缓解数据的稀缺性，但传统方法仍然需要大量带注释的数据集。为了解决这个问题，本文提出了一种双频交叉特征扩散GAN （DCDGNet）来生成海底管道的融合声纳图像。该模型可以从一张图像中生成不同的样本。为了避免空间建模产生的伪影，应用了频率分解。设计了三个关键模块：用于全局语义融合的双频交叉变压器融合模块（DF-CTFM）、用于局部细节增强的双频协同增强模块（DF-CEM）和用于多级特征扩散的特征扩散模块（FDM）。此外，标签同步机制支持在图像生成过程中自动标注。使用fr起始距离（FID）、核起始距离（KID）和起始分数（IS）进行的评价表明，DCDGNet在结构保真度和细节保存方面明显优于现有方法。它实现了231.96的初始化距离，比第二好的方法减少了25.4%，内核初始化距离为0.34，减少了21%，初始化分数为2.93，提高了10.6%。此外，UNet++分割表明生成的样本与真实样本的性能相当，数据增强进一步增强了暴露的管道分割。因此，DCDGNet提高了检测精度，降低了海洋污染风险。

{"title":"DCDGNet: Dual-frequency cross-feature diffusion GAN for single fusion sonar image generation in exposed subsea pipeline inspection","authors":"Jingyao Zhang , Xuerong Cui , Song Dai , Juan Li , Lei Li","doi":"10.1016/j.marpolbul.2026.119289","DOIUrl":"10.1016/j.marpolbul.2026.119289","url":null,"abstract":"<div><div>The exposed subsea pipelines are prone to damage and rupture, increasing the risk of marine pollution; therefore, their safety inspection is imperative. Multibeam Echo Sounder (MBES) and Side-Scan Sonar (SSS) are widely utilized in this task, and their fusion data improves inspection accuracy. However, the limited availability of fusion sonar images with exposed pipelines constrains deep learning performance. Although image generation can ease data scarcity, traditional methods still require large annotated datasets. To address, this paper proposes a Dual-Frequency Cross-feature Diffusion GAN (DCDGNet) for generating fused sonar images of subsea pipelines. The model can generate diverse samples from a single image. To avoid artifacts from spatial modeling, frequency decomposition is applied. Three key modules are designed: the Dual-Frequency Cross-Transformer Fusion Module (DF-CTFM) for global semantic fusion, the Dual-Frequency Collaborative Enhancement Module (DF-CEM) for local detail enhancement, and the Feature Diffusion Module (FDM) for multi-stage feature diffusion. In addition, a label synchronization mechanism enables automatic annotation during image generation process. Evaluations using Fréchet Inception Distance (FID), Kernel Inception Distance (KID) and Inception Score (IS) show that DCDGNet clearly outperforms existing methods in structural fidelity and detail preservation. It achieves a Fréchet Inception Distance of 231.96, a 25.4 percent reduction compared with the second-best method, a Kernel Inception Distance of 0.34, a 21 percent reduction, and an Inception Score of 2.93, a 10.6 percent improvement. Furthermore, UNet++ segmentation shows that generated samples perform comparably to real ones, and data augmentation further enhances exposed pipeline segmentation. Thus, DCDGNet improves detection accuracy and reduces marine pollution risk.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119289"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Microplastics in a mosaic of Marine Protected Areas from southeastern Brazil: An assessment based on filter-feeding bivalves 巴西东南部海洋保护区马赛克中的微塑料：基于滤食性双壳类的评估

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119250

Yonara Garcia , Victor Vasques Ribeiro , Caio César Achiles do Prado , Maria Teresa Castilho Mansor , Alexander Turra , Raimara S. Gomes , Andreia N. Fernandes , Ítalo Braga Castro

Microplastics (MPs) pose a pervasive environmental threat to coastal ecosystems, with increasing reports even within Marine Protected Areas (MPAs). Despite being designed to conserve biodiversity by reducing anthropogenic pressures, MPAs remain vulnerable to diffuse and transboundary pollutants such as plastics. This study utilized bivalves as sentinels to assess MP contamination along a mosaic of 28 MPAs located in a highly populated coastal zone in southeastern Brazil, while simultaneously examining the influence of human modification levels. A total of 687 MP particles were recovered, at a concentration of 0.70 ± 1.85 (0.00–22.14) particles g⁻¹ ww, with levels ranging from 0.08 ± 0.08 to 3.81 ± 6.56 among the 30 studied sites. The MP contamination levels were overall low compared to other studies carried out within unprotected areas. However, even low MP levels in MPAs raise concerns about conservation goals and potential threats to local biodiversity due to potential trends of increased contamination. MPs were predominantly <500 μm, fibrous (55.3%), transparent (58.8%), and composed mainly of rayon, polyamide, and polyester, reflecting global qualitative trends observed in bivalves and other matrices. The contamination was significantly influenced by anthropic modification levels. These patterns highlight how environmental factors shape MP distribution and underscore the need for focused conservation efforts in urban and riverine zones. Our results further highlight bivalves as effective sentinels and reinforce the need for continuous monitoring to strengthen the role of MPAs in mitigating anthropogenic impacts.

微塑料（MPs）对沿海生态系统构成了普遍的环境威胁，甚至在海洋保护区（MPAs）内也有越来越多的报告。尽管海洋保护区旨在通过减少人为压力来保护生物多样性，但它仍然容易受到塑料等扩散和跨界污染物的影响。本研究利用双壳类作为哨兵，评估了位于巴西东南部人口密集的沿海地区28个海洋保护区的MP污染，同时检查了人类修饰水平的影响。共回收687个MP颗粒，浓度为0.70±1.85（0.00-22.14）粒g−1 ww， 30个研究点的浓度范围为0.08±0.08 ~ 3.81±6.56。与在未受保护地区进行的其他研究相比，MP污染水平总体较低。然而，即使海洋保护区的低MP水平也引起了人们对保护目标的关注，以及由于污染增加的潜在趋势对当地生物多样性的潜在威胁。MPs主要为<；500 μm，纤维状（55.3%），透明（58.8%），主要由人造丝、聚酰胺和聚酯组成，反映了在双壳类和其他基质中观察到的整体定性趋势。污染受人为改变程度的影响显著。这些模式突出了环境因素如何影响MP分布，并强调了在城市和河流地区集中保护工作的必要性。我们的研究结果进一步强调了双壳类是有效的哨兵，并强调了持续监测的必要性，以加强海洋保护区在减轻人为影响方面的作用。

{"title":"Microplastics in a mosaic of Marine Protected Areas from southeastern Brazil: An assessment based on filter-feeding bivalves","authors":"Yonara Garcia , Victor Vasques Ribeiro , Caio César Achiles do Prado , Maria Teresa Castilho Mansor , Alexander Turra , Raimara S. Gomes , Andreia N. Fernandes , Ítalo Braga Castro","doi":"10.1016/j.marpolbul.2026.119250","DOIUrl":"10.1016/j.marpolbul.2026.119250","url":null,"abstract":"<div><div>Microplastics (MPs) pose a pervasive environmental threat to coastal ecosystems, with increasing reports even within Marine Protected Areas (MPAs). Despite being designed to conserve biodiversity by reducing anthropogenic pressures, MPAs remain vulnerable to diffuse and transboundary pollutants such as plastics. This study utilized bivalves as sentinels to assess MP contamination along a mosaic of 28 MPAs located in a highly populated coastal zone in southeastern Brazil, while simultaneously examining the influence of human modification levels. A total of 687 MP particles were recovered, at a concentration of 0.70 ± 1.85 (0.00–22.14) particles g<sup>−1</sup> ww, with levels ranging from 0.08 ± 0.08 to 3.81 ± 6.56 among the 30 studied sites. The MP contamination levels were overall low compared to other studies carried out within unprotected areas. However, even low MP levels in MPAs raise concerns about conservation goals and potential threats to local biodiversity due to potential trends of increased contamination. MPs were predominantly <500 μm, fibrous (55.3%), transparent (58.8%), and composed mainly of rayon, polyamide, and polyester, reflecting global qualitative trends observed in bivalves and other matrices. The contamination was significantly influenced by anthropic modification levels. These patterns highlight how environmental factors shape MP distribution and underscore the need for focused conservation efforts in urban and riverine zones. Our results further highlight bivalves as effective sentinels and reinforce the need for continuous monitoring to strengthen the role of MPAs in mitigating anthropogenic impacts.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119250"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Radionuclides and heavy metal contamination in edible fish and shellfish from two Bay of Bengal estuaries: source apportionment and health risk assessment 孟加拉湾两个河口食用鱼类和贝类中的放射性核素和重金属污染：来源分配和健康风险评估

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2026.119268

Asaduzzaman , Saiful Islam , Samin Yeasar Risal , Shirin Akter , Yeasmin Nahar Jolly , Md Fahmidul Haque , Md Joynal Abedin , Pradip K. Bakshi

Natural radionuclides and heavy metals were measured in twelve edible fish and shellfish from two estuarine rivers adjoining the Payra and Rampal coal-fired power plants, Bangladesh. Radionuclide activity concentrations measured via gamma spectroscopy revealed ²³⁸U, ²³²Th, and ⁴⁰K activity levels up to 27.80 ± 2.6, 32.40 ± 1.8 Bqkg⁻¹, and 695 ± 48 Bqkg⁻¹, respectively in Payra's sample, while in Rampal samples, activities reached 22.09 ± 1.7, 28.81 ± 1.8, and 650 ± 47 Bqkg⁻¹, respectively. The estimated dose was below the global safety limit of 2400 μSv/y recommended by UNSCEAR. Most species met acceptable excess lifetime cancer risk (ELCR), but one sample (Giant freshwater prawn) exceeded the threshold. The heavy metals were analyzed by EDXRF and showed distinct metal patterns: Payra, Sr > Fe > Zn > Cu > Se > Mn > Cr > Rb > Hg > Co > Pb; Rampal, Fe > Zn > Sr > Cu > Se > Mn > Rb > Hg > Pb > Co > Cr. Bioaccumulation levels were strongly habitat and diet-dependent. Statistical analyses resolved three source factors for both radionuclides and heavy metals: an anthropogenic coal combustion/fly ash, a geogenic ore-weathering factor, and a geogenic carbonate/silicate-weathering factor, indicating combined coal-related and geological controls on accumulation. In all samples, the concentration of Hg was higher than the allowed limit of 0.5 mg/kg. Several species exceeded tolerable daily intake, which elevated estimated daily intake (EDI); the hazard index (HI) was above the safety threshold for all samples across sites and sampled species.

对来自孟加拉国Payra和Rampal燃煤电厂附近两条河口河流的12种食用鱼类和贝类进行了天然放射性核素和重金属测量。通过伽马能谱测量的放射性核素活性浓度显示，Payra样品中238U、232Th和40K的活度分别达到27.80±2.6、32.40±1.8和695±48 Bqkg - 1，而Rampal样品的活度分别达到22.09±1.7、28.81±1.8和650±47 Bqkg - 1。估计剂量低于联合国辐射科委推荐的全球安全限值2400 μSv/y。大多数物种达到了可接受的超额终身癌症风险（ELCR），但一个样本（巨型淡水对虾）超过了阈值。EDXRF对重金属进行了分析，显示出不同的金属模式：Payra， Sr > Fe > Zn > Cu > Se > Mn > Cr > Rb > Hg > Co > Pb；Rampal, Fe > Zn > Sr > Cu > Se > Mn > Rb > Hg > Pb > Co > Cr.生物积累水平强烈依赖于生境和饮食。统计分析确定了放射性核素和重金属的三个来源因素：人为煤燃烧/粉煤灰、地质成矿-风化因素和地质成矿-碳酸盐/硅酸盐-风化因素，表明煤相关和地质对富集的综合控制。所有样品中汞的浓度均高于0.5 mg/kg的允许限值。一些品种超过了可耐受的每日摄入量，从而提高了估计的每日摄入量（EDI）；所有样点和样种的危害指数均高于安全阈值。

{"title":"Radionuclides and heavy metal contamination in edible fish and shellfish from two Bay of Bengal estuaries: source apportionment and health risk assessment","authors":"Asaduzzaman , Saiful Islam , Samin Yeasar Risal , Shirin Akter , Yeasmin Nahar Jolly , Md Fahmidul Haque , Md Joynal Abedin , Pradip K. Bakshi","doi":"10.1016/j.marpolbul.2026.119268","DOIUrl":"10.1016/j.marpolbul.2026.119268","url":null,"abstract":"<div><div>Natural radionuclides and heavy metals were measured in twelve edible fish and shellfish from two estuarine rivers adjoining the Payra and Rampal coal-fired power plants, Bangladesh. Radionuclide activity concentrations measured via gamma spectroscopy revealed <sup>238</sup>U, <sup>232</sup>Th, and <sup>40</sup>K activity levels up to 27.80 ± 2.6, 32.40 ± 1.8 Bqkg<sup>−1</sup>, and 695 ± 48 Bqkg<sup>−1</sup>, respectively in Payra's sample, while in Rampal samples, activities reached 22.09 ± 1.7, 28.81 ± 1.8, and 650 ± 47 Bqkg<sup>−1</sup>, respectively. The estimated dose was below the global safety limit of 2400 μSv/y recommended by UNSCEAR. Most species met acceptable excess lifetime cancer risk (ELCR), but one sample (Giant freshwater prawn) exceeded the threshold. The heavy metals were analyzed by EDXRF and showed distinct metal patterns: Payra, Sr > Fe > Zn > Cu > Se > Mn > Cr > Rb > Hg > Co > Pb; Rampal, Fe > Zn > Sr > Cu > Se > Mn > Rb > Hg > Pb > Co > Cr. Bioaccumulation levels were strongly habitat and diet-dependent. Statistical analyses resolved three source factors for both radionuclides and heavy metals: an anthropogenic coal combustion/fly ash, a geogenic ore-weathering factor, and a geogenic carbonate/silicate-weathering factor, indicating combined coal-related and geological controls on accumulation. In all samples, the concentration of Hg was higher than the allowed limit of 0.5 mg/kg. Several species exceeded tolerable daily intake, which elevated estimated daily intake (EDI); the hazard index (HI) was above the safety threshold for all samples across sites and sampled species.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119268"},"PeriodicalIF":4.9,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Multi-media distribution, partitioning, and risks of tire additives and their transformation products in coastal waters of China 中国沿海地区轮胎添加剂及其转化产品的多媒体分布、划分及风险分析

IF 5.8 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-14 DOI: 10.1016/j.marpolbul.2025.119040

Chao Liu, Shuang Lu, Min Lv, Longwen Fu, Mingsan Man, Yize Du, Jing Ding, Wei Liu, Lingxin Chen

引用次数: 0