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Emerging flame retardants in the marine environment: A comprehensive review of occurrence, fate and analytical challenges 海洋环境中新出现的阻燃剂:发生、命运和分析挑战的全面回顾
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-09-18 DOI: 10.1016/j.eehl.2025.100186
Muhammad Zeshan , Menghao Gao , Yuan Gao , Haijun Zhang , Jiping Chen
Emerging flame retardant (EFR) pollutants are ubiquitous in marine environment due to their extensive applications, and capacity for persistence and long-range atmospheric transport. The accurate analysis of EFRs in marine matrices remains challenging due to the inherently low sensitivity and selectivity in complex matrices, matrix-induced signal suppression, limited analytical throughput, and the lack of robust non-target screening protocols. This review provides an integration of recent methodological breakthroughs, encompassing sensitive instrumental approaches and innovative extraction and purification techniques for EFR detection in marine multi-matrix. The environmental occurrence and process of EFRs highlight that the roles of particle-mediated transport, plastic debris leaching, and photochemical degradation co-govern the fate of EFRs in marine environments. Furthermore, the review critically examines the ecological risks of EFRs, focusing on their bioaccumulation-driven toxicity, trophic magnification in marine food webs, and the potential for ecosystem destabilization. Mechanistic insights into photochemical transformation pathways are summarized, highlighting the formation of persistent and more toxic products that raise risks of chronic exposure and ecological disruption in marine environment. It provides a scientific foundation for regulatory agencies to assess marine environmental risks and implement targeted mitigation strategies. Future research should focus on quantifying the ecological impacts of EFRs to support a more effective monitoring and management framework.
新兴阻燃剂(EFR)由于其广泛的应用、持久性和远距离大气迁移能力,在海洋环境中无处不在。由于在复杂基质中固有的低灵敏度和选择性、基质诱导的信号抑制、有限的分析通量以及缺乏可靠的非靶点筛选方案,海洋基质中efr的准确分析仍然具有挑战性。本文综述了最近在方法上的突破,包括灵敏的仪器方法和创新的提取和纯化技术,用于海洋多基质中EFR检测。EFRs的环境发生和过程表明,颗粒介导的运输、塑料碎片的浸出和光化学降解共同支配着EFRs在海洋环境中的命运。此外,该综述还严格审查了efr的生态风险,重点关注其生物积累驱动的毒性、海洋食物网的营养放大以及生态系统不稳定的可能性。总结了光化学转化途径的机理,强调了持久性和毒性更强的产物的形成,这些产物增加了海洋环境中长期暴露和生态破坏的风险。它为监管机构评估海洋环境风险和实施有针对性的缓解战略提供了科学基础。未来的研究应侧重于量化efr的生态影响,以支持更有效的监测和管理框架。
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引用次数: 0
Anthropogenic emissions shape long-term changes in PM2.5 concentrations and health risks in China 人为排放影响着中国PM2.5浓度的长期变化和健康风险
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-11-04 DOI: 10.1016/j.eehl.2025.100198
Yiheng Wang , Guochao Chen , Yutong Yang , Zhaolei Zhang , Ruhan Zhang , Peng Wang , Hongliang Zhang
China has experienced an initial increase and a subsequent decrease in fine particulate matter (PM2.5) concentrations since the early 21st century, with substantial heterogeneity across different source contributions. This study developed a source-oriented CMAQ model to construct a source-resolved PM2.5 concentration database for China during 2000–2020. Subsequently, source-specific health risks and the contributions of key driving factors were systematically evaluated using the piling-up decomposition method. The results indicate that anthropogenic emissions, particularly from industrial sources, were the primary drivers of both the increase in PM2.5 from 2000 to 2012 (51.8%) and the subsequent decrease from 2012 to 2020 (47.6%). Currently, industrial sources remain the largest contributor to PM2.5 (about 32%), followed by residential (about 22%) and transportation sources (about 13%). Implementation of two-phase air pollution control measures led to a 20.4% reduction in national premature mortality attributable to PM2.5 from 2012 to 2020, although 10.6% of this benefit was offset by changes in population and baseline mortality rates. Throughout 2000–2020, health risks associated with anthropogenic sources consistently exceeded their proportional contribution to PM2.5, primarily because these emissions are concentrated in densely populated areas. These findings underscore that, in addition to implementing region-specific emission reduction policies, maintaining stringent controls on anthropogenic emissions, particularly from industrial and transportation sources, is crucial to maximizing future health benefits.
自21世纪初以来,中国细颗粒物(PM2.5)浓度呈先增后降的趋势,且不同来源的贡献存在很大的异质性。本研究建立了面向源的CMAQ模型,构建了2000-2020年中国PM2.5源分辨浓度数据库。随后,采用堆积分解法系统评价了源特异性健康风险和关键驱动因素的贡献。结果表明,人为排放,特别是工业排放,是2000 - 2012年PM2.5增加(51.8%)和随后2012 - 2020年下降(47.6%)的主要驱动因素。目前,工业来源仍然是PM2.5的最大来源(约32%),其次是住宅来源(约22%)和交通来源(约13%)。2012年至2020年,两阶段空气污染控制措施的实施使PM2.5导致的全国过早死亡率降低了20.4%,尽管其中10.6%的效益被人口和基线死亡率的变化所抵消。在2000-2020年期间,与人为源相关的健康风险始终超过其对PM2.5的比例贡献,主要是因为这些排放集中在人口稠密地区。这些调查结果强调,除了执行特定区域的减排政策外,严格控制人为排放,特别是来自工业和运输来源的排放,对于最大限度地提高未来的健康效益至关重要。
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引用次数: 0
Mitigating eutrophication may elevate neurotoxic mercury risks in global coastal ecosystems 减轻富营养化可能会提高全球沿海生态系统中神经毒性汞的风险
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-08-05 DOI: 10.1016/j.eehl.2025.100176
Xiangyu Kong , Lufeng Chen , Yongguang Yin , Yong Cai , Yanbin Li
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引用次数: 0
Micro-nano-bubble ozonation enhanced thiamethoxam mineralization and toxicity alleviation in wastewater 微纳泡臭氧化增强了废水中噻虫嗪的矿化和毒性缓解
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-11-25 DOI: 10.1016/j.eehl.2025.100202
Xiuwen Li , Yizhou Wu , Manyi Chen , Ting Rui , Peng Shi , Feng Yang , Zepeng Zhang , Min Hu , Feng Zhang , Xiankun Wu , Qing Zhou , Aimin Li
Neonicotinoid insecticides (NNIs), including thiamethoxam (TMX), clothianidin, and imidacloprid, are widely used in agriculture to control pests. Consequently, they have been frequently detected in wastewater, posing significant ecotoxicological risks. Conventional ozonation is widely applied for NNI removal but is limited by low mineralization efficiency and high effluent toxicity. However, the mechanisms of the performance limitations and increased toxicity remain unclear, hindering the effective application of ozonation in wastewater treatment. This study constructed a novel micro-nano-bubble ozonation (MNB-O3) system, which enhanced the degradation rate of TMX, a representative NNI, by 34.7% and the mineralization efficiency by 176.5%, compared to conventional bubble ozonation (CB-O3). MNB-O3 also significantly reduced both acute toxicity and neurotoxicity in the ozonated effluents, addressing the issue of high toxicity associated with CB-O3. Mechanistically, the formation of hydroxyl radicals (·OH) and singlet oxygen (1O2) increased substantially and was identified as the primary contributor to TMX degradation. Transformation product (TP) analysis revealed that formaldehyde and acetaldehyde were the key contributors to effluent toxicity, both accumulating in the CB-O3 effluent. In contrast, MNB-O3 achieved significant reductions in formaldehyde (87.4%) and acetaldehyde (34.6%) concentrations, substantially lowering effluent toxicity. Furthermore, a large-scale MNB-O3 application demonstrated excellent performance in removing NNIs and reducing toxicity. This study provides valuable insights into the mechanisms underlying toxicity reduction in MNB-O3 and highlights its potential for low-carbon wastewater treatment. By addressing the limitations of CB-O3 and reducing the NNIs-related environmental risks, MNB-O3 represents a promising advancement in the field of wastewater treatment.
新烟碱类杀虫剂(NNIs)广泛用于农业害虫防治,包括噻虫嗪(TMX)、噻虫胺(clothianidin)和吡虫啉。因此,它们经常在废水中被检测到,构成重大的生态毒理学风险。常规臭氧氧化法在NNI脱除中得到了广泛应用,但存在矿化效率低、出水毒性大的问题。然而,臭氧氧化的性能限制和毒性增加的机制尚不清楚,阻碍了臭氧氧化在废水处理中的有效应用。本研究构建了一种新型微纳气泡臭氧化(MNB-O3)体系,与常规气泡臭氧化(CB-O3)相比,该体系对具有代表性的NNI TMX的降解率提高了34.7%,矿化效率提高了176.5%。MNB-O3还显著降低了臭氧化废水中的急性毒性和神经毒性,解决了与CB-O3相关的高毒性问题。机制上,羟基自由基(·OH)和单线态氧(1O2)的形成显著增加,被认为是TMX降解的主要因素。转化产物(TP)分析表明,甲醛和乙醛是出水毒性的主要贡献者,两者都在CB-O3出水中积累。相比之下,MNB-O3显著降低了甲醛(87.4%)和乙醛(34.6%)浓度,大大降低了出水毒性。此外,大规模应用MNB-O3在去除NNIs和降低毒性方面表现出优异的性能。该研究为MNB-O3毒性降低的机制提供了有价值的见解,并强调了其在低碳废水处理中的潜力。通过解决CB-O3的局限性和降低nnis相关的环境风险,MNB-O3在废水处理领域代表了一个有希望的进展。
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引用次数: 0
Improving Four-pre ability for flood in alpine regions 提高高寒地区抗洪能力
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-10-01 DOI: 10.1016/j.eehl.2025.100189
Li Zhou , Haowen Li , Zhongshun Gu , Yinan Guo , Xiaopeng Wang , Biqiong Wu , Lingling Wu , Chun Zhou , Zhipan Niu
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引用次数: 0
Environmental hierarchy as the third dimension of nanomaterial transformation science 环境层级是纳米材料转化科学的第三维度
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-10-28 DOI: 10.1016/j.eehl.2025.100195
Swaroop Chakraborty
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引用次数: 0
The detoxification paradox: Rethinking microbial dehalogenation in environmental remediation 解毒悖论:环境修复中微生物脱卤的再思考
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-10-03 DOI: 10.1016/j.eehl.2025.100190
Qian Wang , Shuai Wang , Yueli Hu , Jiaxin Wu , Shanyuan Niu
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引用次数: 0
From water to sediment: A meta-analysis of microplastic distribution and the impact of dams in reservoir ecosystems 从水到沉积物:微塑料分布和水库生态系统中水坝影响的荟萃分析
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.eehl.2025.100188
Wei Gao , Peng Zhang , Hongcui Wang , Xiaohan Yang , Chunjiang An
Microplastics (MPs) have become major contaminants in freshwater ecosystems. While numerous studies have characterized MPs in reservoirs, a comprehensive synthesis focusing on in-reservoir variations and dam-related influences is still lacking. This study investigates the spatial distribution of MPs in reservoir water and sediment based on data synthesized from 34 peer-reviewed studies covering 36 reservoirs across diverse climatic and hydrological regions worldwide, with a focus on the trapping effects of dams. Using a combination of generalized linear mixed models (GLMM) and generalized additive mixed models (GAMM), the study analyzed MP abundance patterns in relation to distance to the dam and identified key environmental and anthropogenic factors influencing their distribution. The results show that MPs tend to accumulate near dams, suggesting a trapping effect, while upstream MP concentrations decline with increasing distance. Vertical stratification patterns were observed in both water and sediment, indicating different transport mechanisms. Additionally, exposure to MPs significantly affected benthic organisms, particularly in terms of growth and reproduction, with effects intensifying over longer exposure durations. These findings highlight the need for improved monitoring and management strategies in reservoirs to mitigate MP pollution and its ecological consequences.
微塑料已成为淡水生态系统的主要污染物。虽然有大量的研究对水库中的MPs进行了表征,但对水库内变化和大坝相关影响的综合研究仍然缺乏。本研究基于34项同行评审研究的数据,调查了水库水和沉积物中MPs的空间分布,这些研究涵盖了全球不同气候和水文区域的36个水库,重点研究了水坝的捕获效应。采用广义线性混合模型(GLMM)和广义加性混合模型(GAMM)相结合的方法,分析了MP丰度与大坝距离的关系,并确定了影响MP丰度分布的关键环境和人为因素。结果表明,多聚物倾向于在水坝附近积聚,表明存在捕获效应,而上游多聚物浓度随着距离的增加而下降。在水和沉积物中均观察到垂直分层模式,表明不同的输送机制。此外,暴露于多磺酸粘多糖显著影响底栖生物,特别是在生长和繁殖方面,影响随着暴露时间的延长而加剧。这些发现强调了改善水库监测和管理策略的必要性,以减轻多聚磷污染及其生态后果。
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引用次数: 0
AI carbon footprint: The non-negligible hidden emission source 人工智能碳足迹:不可忽略的隐性排放源
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-11-03 DOI: 10.1016/j.eehl.2025.100197
Chao He , Fang Yue , Lanchun Li , Yun Tang , Qian Wu , Wei Chen
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引用次数: 0
Climate, urbanization, and infectious disease: Environmental drivers of Foshan's chikungunya outbreak 气候、城市化和传染病:佛山基孔肯雅热爆发的环境驱动因素
IF 17.6 Pub Date : 2025-12-01 Epub Date: 2025-08-23 DOI: 10.1016/j.eehl.2025.100179
Chang He , Guiying Li , Taicheng An
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引用次数: 0
期刊
Eco-Environment & Health
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