Journal of hazardous materials letters最新文献_第3页

Effect of triclosan on phosphate solubilising bacteria in mangrove ecosystem: In-vitro and In-vivo 三氯生对红树林生态系统中磷酸盐增溶菌的体外和体内影响

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2024-11-19 DOI: 10.1016/j.hazl.2024.100136

R.K. Dash , K. Kumar , S.P. Shukla , S. Kumar , S. Kumar H , S. Karmakar , T. Paul

Triclosan (TCS) is a widely used biocide found in medicinal, household, and personal care products, frequently detected in various environmental matrices, posing significant threats to microbial communities and overall ecosystem functioning. This study evaluates the in vivo and in vitro effects of triclosan (TCS) on phosphate-solubilising bacteria (PSB) in mangrove ecosystems. Two experimental approaches were employed: a microcosm (in vivo) study and a laboratory (in vitro) analysis. Five isolated PSB strains—Sphingomonas paucimobilis, Rhizobium radiobacter, Serratia ficaria, Klebsiella oxytoca, and Klebsiella pneumoniae—were selected from the mangrove ecosystem for investigation. The minimum inhibitory concentration (MIC) results revealed that Klebsiella pneumoniae exhibited the highest resistance to TCS among the tested strains. In vivo experiments demonstrated a significant reduction in soil-available phosphorus and enzymatic activities, including acid and alkaline phosphatase, dehydrogenase, and fluorescein diacetate (FDA) activity, in TCS-exposed samples throughout the exposure period. In vitro results showed that phosphate solubilisation decreased significantly with increasing TCS concentrations in all strains except Klebsiella pneumoniae. Overall, TCS effectively inhibited the growth of PSB in mangrove ecosystems. This study is the first to report the impact of TCS on PSB in mangroves and provides valuable data for future research on microbial communities in such environments.

三氯生（TCS）是一种广泛应用于医药、家庭和个人护理产品中的杀菌剂，经常在各种环境矩阵中检测到，对微生物群落和整体生态系统功能构成重大威胁。本研究评估了三氯生（TCS）对红树林生态系统中磷酸盐溶解菌（PSB）的体内和体外影响。采用两种实验方法：微观（体内）研究和实验室（体外）分析。从红树林生态系统中分离出少动鞘氨单胞菌、放射根瘤菌、沙雷氏菌、氧化克雷伯菌和肺炎克雷伯菌5株PSB进行研究。最低抑菌浓度（MIC）结果显示肺炎克雷伯菌对TCS的耐药性最高。体内实验表明，在整个暴露期间，暴露于tcs的样品中土壤有效磷和酶活性（包括酸性和碱性磷酸酶、脱氢酶和双乙酸荧光素（FDA）活性）显著降低。体外实验结果显示，除肺炎克雷伯菌外，所有菌株的磷酸盐增溶作用均随TCS浓度的增加而显著降低。总体而言，TCS有效抑制了红树林生态系统中PSB的生长。本研究首次报道了TCS对红树林PSB的影响，为今后研究此类环境下的微生物群落提供了有价值的数据。

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引用次数: 0

PFAS destruction using supercritical water oxidation (SCWO) at Peterson Space Force Base 在彼得森太空部队基地使用超临界水氧化（SCWO）破坏PFAS

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-06-20 DOI: 10.1016/j.hazl.2025.100156

Hallie Webb , Stephen Rosansky , Samer Mohamad Al-Dirani , Kavitha Dasu , Christopher G. Scheitlin , Jeff Davis , Leonardo Chiques

Per- and polyfluoroalkyl substances (PFAS) have become a top environmental concern for the military due to the prevalence of PFAS contamination from aqueous film-forming-foams (AFFFs) used to suppress fires in emergencies and training exercises. Supercritical water oxidation (SCWO) has emerged as a promising technology for the removal and destruction of PFAS in aqueous media. This project used the SCWO-based PFAS Annihilator® at Peterson Space Force Base to treat unconcentrated, 50 %, and 79 % concentrated PFAS-contaminated water onsite and demonstrate the efficacy of the technology. This study analyzed target PFAS, total organofluorine, and non-PFAS contaminants removed by the SCWO system. Here, 94.3 % of target PFAS in the unconcentrated influent, 99.2 % in the 50 % concentrated influent, and 99.7 % in the 79 % concentrated influent were destroyed, while removing > 95.5 % of total organofluorine, with limited byproducts in the aqueous and vapor effluent. The mass balance achieved 52–102 % fluoride recovery across the three concentrations. A novel cost assessment demonstrates improved economic efficiency with increasing influent concentration, suggesting that SCWO can efficiently remove and destroy PFAS from contaminated water to levels below regulatory requirements, solidifying itself as an innovative solution to PFAS contamination.

全氟烷基和多氟烷基物质（PFAS）已成为军方最关心的环境问题，因为在紧急情况和训练演习中用于灭火的水性成膜泡沫（afff）普遍存在PFAS污染。超临界水氧化（SCWO）是一种很有前途的去除和破坏水介质中PFAS的技术。该项目在彼得森太空部队基地使用基于scwo的PFAS湮灭器®，现场处理未浓缩、50% %和79% %浓缩的PFAS污染水，并证明了该技术的有效性。本研究分析了SCWO系统去除的目标PFAS、总有机氟和非PFAS污染物。在这里，未浓缩进水中94.3 %的目标PFAS被破坏，在50% %的浓缩进水中99.2 %，在79 %的浓缩进水中99.7 %，同时去除>； 95.5 %的总有机氟，在水和蒸汽出水中产生有限的副产物。三种浓度下的氟化物回收率达到52-102 %。一项新的成本评估表明，随着进水浓度的增加，经济效率也会提高，这表明SCWO可以有效地去除和破坏受污染水中的PFAS，使其低于监管要求，从而巩固了其作为PFAS污染的创新解决方案的地位。

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引用次数: 0

A laser-enabled low carbon emission pyrometallurgical approach to recycle Li-ion batteries via silicothermic reductions 一种激光低碳排放的火法冶金方法，通过硅热还原回收锂离子电池

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-07-24 DOI: 10.1016/j.hazl.2025.100160

James Chen, Ruby Zhang, Maciej Podlesny, Tyler Smith, Chao Shi, Jian Li

In response to the growing shift from graphite to silicon in Li-ion battery anodes, we propose a novel low-carbon pyrometallurgical recycling method that uses silicon as the reducing agent. Silicon was chosen as the reductant because, as the emerging high-capacity anode material, it not only integrates seamlessly with next-generation battery chemistries but also offers a substantially lower carbon footprint than conventional carbon-based reducing agents. The thermodynamics and reaction mechanism between LiCoO₂ and Si are investigated using differential thermal and thermogravimetric analyses. The reaction products are characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. When heated to 1500 °C, LiCoO₂ undergoes simultaneous decomposition and melting, reacting with Si to produce cobalt spheres. Through a laser-enabled recycling process for only 30 s with a laser power of 2 kW, LiCoO₂ is reduced via silicothermic reaction to a Co–Si alloy with only a small amount of slag (Li₂SiO₃ and Li₂Co(SiO₄)). This successful use of silicon paves the way for a cleaner, more sustainable battery recycling strategy.

为了应对锂离子电池负极从石墨到硅的日益转变，我们提出了一种新的低碳火法回收方法，该方法使用硅作为还原剂。之所以选择硅作为还原剂，是因为作为新兴的高容量阳极材料，它不仅与下一代电池化学物质无缝集成，而且比传统的碳基还原剂提供更低的碳足迹。利用差热分析和热重分析研究了LiCoO2与Si之间的热力学和反应机理。用扫描电子显微镜、能量色散x射线能谱和x射线衍射对反应产物进行了表征。当加热到1500 °C时，LiCoO2同时分解和熔化，与Si反应生成钴球。通过激光回收过程，激光功率为2 kW，时间仅为30 s， LiCoO2通过硅热反应还原为Co-Si合金，仅含有少量渣（Li2SiO3和Li2Co(SiO4)）。硅的成功使用为更清洁、更可持续的电池回收策略铺平了道路。

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引用次数: 0

Ingestion of microplastics during chewing gum consumption 嚼口香糖时摄入的微塑料

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-09-21 DOI: 10.1016/j.hazl.2025.100164

Lisa Lowe, Jamie Leonard, Sanjay Mohanty

Chewing gums typically contain plant-based or synthetic plastic polymers to improve their texture and flavor retention. These polymer fragments or microplastics can be released into the environment when disposed of improperly or ingested while chewing gums. Yet, how many microplastics a person may ingest while chewing gums is unknown. Analyzing microplastics released into saliva from 5 natural and 5 synthetic chewing gums, we found that each gram of chewing gum could release up to 637 microplastics, and 94 % of microplastics were released within the first 8 min of chewing. Surprisingly, synthetic chewing gum released a similar (p > 0.8) number of microplastics as natural or plant-based chewing gums. Microplastics released from the chewing gums were predominantly small, with a median size of 45.4 µm. Both of the chewing gum types released four types of plastic polymers—polyolefins, polyterephthalates (PET), polyacrylamides, and polystyrenes,— among which polyolefins were the most abundant. The result reveals that chewing gum consumption, irrespective of the type of chewing gums, could result in direct ingestion of microplastics.

口香糖通常含有植物性或合成塑料聚合物，以改善其质地和风味保留。如果处理不当或咀嚼口香糖时被摄入，这些聚合物碎片或微塑料会释放到环境中。然而，一个人在嚼口香糖时可能摄入多少微塑料尚不清楚。通过分析5种天然口香糖和5种合成口香糖释放到唾液中的微塑料，我们发现每克口香糖可以释放多达637个微塑料，其中94% %的微塑料在咀嚼的前8 分钟内释放。令人惊讶的是，合成口香糖释放的微塑料数量与天然口香糖或植物口香糖相似（p >； 0.8）。从口香糖中释放的微塑料主要是小的，中位数尺寸为45.4 µm。两种口香糖都释放出四种塑料聚合物——聚烯烃、聚对苯二甲酸乙二醇酯（PET）、聚丙烯酰胺和聚苯乙烯，其中聚烯烃含量最多。研究结果表明，无论口香糖的种类如何，嚼口香糖都可能导致微塑料的直接摄入。

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引用次数: 0

New Approach Methodologies: Physiological responses of daphnids to pharmaceutical mixtures 新方法方法：水蚤对药物混合物的生理反应

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2024-12-28 DOI: 10.1016/j.hazl.2024.100139

Emma Rowan , Anne Leung , Katie O’Rourke , Xiaofei Yin , Lorraine Brennan , Konstantinos Grintzalis

Conventional methods for water monitoring are insufficient to capture the impacts of pollution because of their sensitivity limits, while they also fail to provide mechanistic insight regarding the actions of pollutants. On the other hand, New Approach Methodologies are more and more introduced as supplementary tools that provide sensitive metrics for pollution assessment. In this context, freshwater sentinel species commonly known as water fleas were used to assess the impact of a pharmaceutical mixture. The pharmaceutical cocktail comprised of representatives of commonly encountered pharmaceuticals and specifically diclofenac, metformin, gabapentin, amoxicillin, trimethoprim, and erythromycin. Combining toxicity, phenotypic and molecular endpoints, results showed differences in mortality, feeding, key enzyme activities and metabolic perturbations, thus supporting a distinct pattern in physiological responses of daphnids that could be used to monitor and predict pollution early.

传统的水监测方法由于其灵敏度限制而不足以捕捉污染的影响，同时它们也不能提供有关污染物作用的机制见解。另一方面，越来越多地引入新方法方法作为补充工具，为污染评估提供敏感的指标。在这种情况下，通常称为水蚤的淡水哨兵物种被用来评估药物混合物的影响。药物鸡尾酒由常见药物的代表组成，特别是双氯芬酸、二甲双胍、加巴喷丁、阿莫西林、甲氧苄啶和红霉素。综合毒性、表型和分子终点，结果显示了水蚤在死亡率、摄食、关键酶活性和代谢扰动方面的差异，从而支持了水蚤生理反应的独特模式，可用于早期监测和预测污染。

引用次数: 0

Granular activated carbon reduces PFAS bioavailability and protects ant colony growth in soil 颗粒活性炭降低PFAS的生物利用度，保护土壤中的蚁群生长

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-11-06 DOI: 10.1016/j.hazl.2025.100169

Divina Navarro , Ben Hoffmann , Wenchao Lu , Karl Bowles , Jason Kirby

Per- and polyfluoroalkyl substances (PFAS) are persistent contaminants that pose risks to ecological and human health. Soil stabilisation using sorbents such as granular activated carbon (GAC) can reduce PFAS mobility and bioavailability. Previous studies have focused on plants and earthworms, but bioavailability in species relevant to arid and semi-arid environments remains poorly understood. This study examined the effectiveness of GAC in reducing PFAS bioavailability to tropical fire ants (Solenopsis geminata). Two PFAS-contaminated soils were amended with 1 % or 5 % (w/w) GAC, incubated, then subjected to 5-day and 2-month ant exposure trials. Results showed that GAC reduced leachable ∑₂₉PFAS by 73–100 %, with greater reductions at later post-treatment leaching assessments and at 5 % GAC. PFAS exposure in untreated soils impaired ant colony growth, whereas GAC addition mitigated these effects and reduced PFAS concentrations in ants by < 97 %, with the greatest reductions observed in the sandy soil, consistent with leaching results. Non-target PFAS detected in ants collected from untreated soils were not detected in ants from GAC-treated soils, indicating GAC's broad sorption performance. Risk quotients calculated suggest that GAC can substantially lower potential risk to mammals and birds that feed on ants. Overall, findings underscore the value of soil stabilisation strategies, especially in ecosystems where invertebrates influence contaminant exposure.

全氟和多氟烷基物质（PFAS）是对生态和人类健康构成风险的持久性污染物。使用颗粒活性炭（GAC）等吸附剂稳定土壤可以降低PFAS的流动性和生物利用度。以前的研究主要集中在植物和蚯蚓上，但是对与干旱和半干旱环境有关的物种的生物利用度仍然知之甚少。本研究考察了GAC降低PFAS对热带火蚁（Solenopsis geminata）生物利用度的有效性。用1 %或5 % （w/w）的GAC对两种pfas污染的土壤进行处理，孵育，然后进行5天和2个月的蚂蚁暴露试验。结果表明，GAC使可浸出∑29PFAS降低了73 ~ 100 %，在处理后的浸出评估和5 % GAC时降低幅度更大。在未经处理的土壤中暴露PFAS会损害蚁群的生长，而添加GAC会减轻这些影响，并使蚂蚁体内的PFAS浓度降低<； 97 %，在沙质土壤中观察到的降低幅度最大，与淋滤结果一致。在未经处理的土壤中采集的蚂蚁中检测到的非目标PFAS在经过GAC处理的土壤中没有检测到，这表明GAC具有广泛的吸附性能。计算出的风险商数表明，GAC可以大大降低以蚂蚁为食的哺乳动物和鸟类的潜在风险。总的来说，研究结果强调了土壤稳定策略的价值，特别是在无脊椎动物影响污染物暴露的生态系统中。

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引用次数: 0

Aftermath of a major firefighting foam spill in Brunswick, Maine: Spatiotemporal dynamics of per- and polyfluoroalkyl substances in the downstream surface waters 缅因州不伦瑞克一次重大消防泡沫泄漏的后果：下游地表水中全氟烷基和多氟烷基物质的时空动态

IF 6.6 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-04-08 DOI: 10.1016/j.hazl.2025.100150

Macy Hannan , Fatih Evrendilek , Daniel Leclair , Manisha Choudhary , Kenneth Mensah , Christoph Aeppli , Arjun K. Venkatesan , Onur G. Apul

On August 19, 2024, 5,500 L of per- and polyfluoroalkyl substances (PFAS)-based aqueous film-forming foam (AFFF) spilled into the watershed near Brunswick Executive Airport in Maine, USA. This study investigates the immediate impact of the largest PFAS spill in the state's history on nearby aquatic ecosystems. Over 11 days, PFAS were sampled from nine surface waters, detecting 18 PFAS, predominantly perfluorooctanesulfonic acid (PFOS). A significant reduction in PFAS levels occurred within days due to clean-up efforts and natural attenuation (e.g., dilution, adsorption, and aerosolization), in addition to downstream transport. Kruskal-Wallis and Steel-Dwass tests revealed significant spatial variability in PFAS, with PFOS, perfluorohexanesulfonic acid, and perfluoroalkyloctanoic acid remaining elevated near the spill but declined by 99.9 % at the Harpswell Cove estuary 3.2 km south of the spill. The rapid PFAS spread poses risks to the downstream environments. This study provides insights into post-spill PFAS dynamics and highlights the urgency of minimizing PFAS-based AFFF use and spills, and further research into long-term ecosystem and human health risks associated with PFAS contamination.

Synopsis

The aftermath of a major AFFF spill was analyzed to provide insights into immediate spatiotemporal distribution of PFAS.

2024年8月19日，5,500 L基于全氟烷基和多氟烷基物质（PFAS）的水性成膜泡沫（AFFF）泄漏到美国缅因州不伦瑞克行政机场附近的分水岭。这项研究调查了该州历史上最大的PFAS泄漏对附近水生生态系统的直接影响。在11天的时间里，从9个地表水中取样了全氟辛烷磺酸，检测到18种全氟辛烷磺酸，主要是全氟辛烷磺酸。由于清理工作和自然衰减（如稀释、吸附和雾化）以及下游运输，PFAS水平在几天内显著降低。Kruskal-Wallis和钢- dwass试验显示，全氟辛烷磺酸、全氟六磺酸和全氟烷基辛酸在泄漏点附近仍处于升高状态，但在泄漏点以南3.2 公里的Harpswell湾河口下降了99.9% %。PFAS的快速扩散给下游环境带来了风险。该研究提供了对泄漏后PFAS动态的见解，并强调了减少PFAS的AFFF使用和泄漏的紧迫性，以及对PFAS污染相关的长期生态系统和人类健康风险的进一步研究。摘要分析了AFFF重大泄漏的后果，以提供对PFAS即时时空分布的见解。

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引用次数: 0

Copper and cadmium toxicity affecting in vitro growth and Scopelophila cataractae development 铜和镉的毒性对体外生长和白内障的影响

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-10-28 DOI: 10.1016/j.hazl.2025.100167

Narin Printarakul , Napaporn Paennoi , Weeradej Meeinkuirt

The effects of copper (Cu) and cadmium (Cd) accumulation on growth and development of Scopelophila cataractae (Mitt.) Broth., Pottiaceae, were investigated over 24 weeks. Moss samples were grown on modified hydroponic medium supplemented with Cu and Cd. Cu markedly promoted the transition from chloronema to caulonema and showed a significantly higher proportion (95.5 %) at 800 µM CuSO₄. The greatest bud and gametophore formation was observed in the 400 µM CuSO₄ treatment, with 130 buds per 25 mm². In contrast, Cd restricted filaments to the chloronema stage, reduced average chloroplast numbers per cell (from 75 to 34.5 under 800 µM CdCl₂), and induced large vacuolar vesicles, reflecting cellular stress. Relative growth rates were 7.1, 10.7 and 16.2 mg g⁻¹d⁻¹ for 800 µM CuSO₄, 800 µM CdCl₂ and control, respectively, indicating strong growth inhibition by heavy metals at high accumulation. Co-exposure of low Cu with Cd increased Cd accumulation (2188–16,027 mg kg⁻¹) and mitigated Cd toxicity. High metal accumulation (>1000 mg kg⁻¹ for Cd, >10,000 mg kg⁻¹ for Cu), protonemal growth and development were generally suppressed. These findings highlight the adaptive strategies of S. cataractae in coping with heavy metal stress and its potential as a bioindicator for metal-contaminated environments.

铜（Cu）和镉（Cd）积累对白内障Scopelophila cataractae生长发育的影响汤。在24周的时间内进行调查。苔藓样品在添加Cu和Cd的改良水培培养基上生长，Cu显著促进了苔藓从绿瘤向茎瘤的转变，并且在800 µM CuSO₄中，Cu的比例显著提高（95.5 %）。400 µM硫酸铜处理的芽和配子体形成最多，每25 mm²有130个芽。相比之下，Cd限制了花丝进入叶绿体阶段，降低了每个细胞的平均叶绿体数量（在800 µM CdCl₂下从75个减少到34.5个），并诱导了大液泡泡，反映了细胞应激。800 µM CuSO₄、800 µM CdCl₂和对照的相对生长速率分别为7.1、10.7和16.2 mg g⁻¹d⁻¹ ，说明重金属在高蓄积时对生长有很强的抑制作用。低铜与Cd的共同暴露增加了Cd的积累（2188 - 16027 mg kg⁻¹）并减轻了Cd的毒性。高金属积累（1000 mg kg⁻¹（Cd）， 1000 mg kg⁻¹（Cu）），原体生长发育普遍受到抑制。这些发现强调了白内障葡萄应对重金属胁迫的适应性策略及其作为金属污染环境生物指标的潜力。

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引用次数: 0

Fungal proteomic response to PFAS mixtures: Defense or offense? 真菌对PFAS混合物的蛋白质组反应：防御还是进攻？

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-07-22 DOI: 10.1016/j.hazl.2025.100159

Kshitija Shah , Vijaya Pandey , Himadri Bose , Yun Hao , Rohan Ghosh Choudhuri , Allison Connolly , Hilary Wyner , Elizabeth Deyett , Kent Sorenson , James A. Wohlschlegel , Shaily Mahendra

The differential expression of molecular markers identified in response to environmental contaminants offer insights into early-stage resilience pathways that may support biological remediation approaches. Per- and polyfluoroalkyl substances (PFAS) are chemically stable, persistent environmental pollutants, which are associated with multiple adverse health effects. While fungi possess oxidative enzymes with potential for PFAS biotransformation, the molecular basis of their tolerance and response remains poorly understood. This study investigated the proteomic response of Phanerochaete chrysosporium to 10 mg/L PFOA and an environmentally relevant concentration of a PFAS mixture. Although no measurable PFAS degradation was observed over a 25-day exposure period, significant differential protein expression of key stress-response proteins such as cytochrome P450s, glutathione S-transferases, heat shock proteins, peroxidases, and ABC transporters were noted, in both intra- and extracellular fractions. Functional enrichment revealed the activation of pathways related to posttranslational modification, protein turnover, membrane efflux mechanisms, catabolism, and signal transduction. Proteomic profiles were shaped more closely by exposure duration and localization than by compound identity. These findings highlight the early-stage adaptations and signaling mechanisms of wood-decaying fungi under PFAS stress, which precede observable chemical breakdown, and offer critical insights into fungal responses that may be leveraged for future monitoring and bioremediation strategies.

在环境污染物响应中识别的分子标记的差异表达提供了对早期恢复途径的见解，可能支持生物修复方法。全氟烷基和多氟烷基物质（PFAS）是化学稳定的持久性环境污染物，与多种不利的健康影响有关。虽然真菌拥有具有PFAS生物转化潜力的氧化酶，但其耐受性和反应的分子基础仍然知之甚少。本研究研究了黄孢Phanerochaete chrysosporium对10 mg/L PFOA和环境相关浓度PFAS混合物的蛋白质组学响应。尽管在25天的暴露期内没有观察到可测量的PFAS降解，但在细胞内和细胞外组分中，关键应激反应蛋白（如细胞色素p450、谷胱甘肽s转移酶、热休克蛋白、过氧化物酶和ABC转运蛋白）的蛋白表达存在显著差异。功能富集揭示了与翻译后修饰、蛋白质周转、膜外排机制、分解代谢和信号转导相关的途径的激活。暴露时间和定位比化合物身份更能塑造蛋白质组学特征。这些发现强调了木材腐烂真菌在PFAS胁迫下的早期适应和信号机制，这是在可观察到的化学分解之前，并为真菌反应提供了重要的见解，可以用于未来的监测和生物修复策略。

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引用次数: 0

Emerging contaminants in stormwater: Tire-derived chemicals, pharmaceuticals, and heavy metals detected in a United Arab Emirates extreme weather event 雨水中出现的污染物：在阿拉伯联合酋长国的极端天气事件中检测到的轮胎衍生化学品、药品和重金属

IF 8.1 Q1 ENGINEERING, ENVIRONMENTAL

Journal of hazardous materials letters

Pub Date : 2025-11-01 Epub Date: 2025-08-07 DOI: 10.1016/j.hazl.2025.100162

Jonathan Navarro Ramos , Lara Dronjak , Sofian Kanan , Md Maruf Mortula , Joshua S. Wallace , Fatin Samara , Ning Dai , Diana S. Aga

Climate change is associated with the intensification of weather patterns, including extreme weather events of historically arid regions such as the United Arab Emirates (UAE). On April 16–17, 2024, the UAE experienced a severe storm with unusually heavy precipitation, which resulted in widespread urban flooding, contaminated floodwaters, and the potential for cross-contamination in water distribution systems. Ten floodwater samples from around the American University of Sharjah, UAE, were analyzed for the presence of emerging contaminants (e.g., tire-derived chemicals, pharmaceuticals, and personal care products (PPCPs)) and selected metals. Tire-derived chemicals were detected at varying concentrations: N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) (<detection limit - 26 ng/L), 6PPD-quinone (20–270 ng/L), 1,3-diphenylguanidine (DPG) (490–14,340 ng/L), and hexa(methoxymethyl)melamine (HMMM) (70–15,800 ng/L). Four PPCPs (caffeine, cotinine, acetaminophen, and lidocaine) were detected at lower concentrations (42–779 ng/L, 6–179 ng/L, 4–196 ng/L, and 1–7 ng/L, respectively). Significantly higher amounts of all tire-derived chemicals and PPCPs were observed in samples from outside the campus. Metals were also detected: aluminum (92–218 µg/L), iron (49–349 µg/L), potassium (160–3860 µg/L), manganese (3 µg/L), and barium (1–7 µg/L). Correlation analysis revealed a strong positive correlation between 6PPD-quinone and HMMM (r = 0.893, p = 0.000507), and among acetaminophen, caffeine, cotinine, and lidocaine (r = 0.501–0.980, and p < 0.05), suggesting shared sources stemming from high vehicular activity and raw wastewater overflow. These findings emphasize the need for arid regions to implement targeted stormwater management and monitoring strategies during extreme weather events to address floodwater-driven mobilization of environmental contaminants.

气候变化与天气模式的加剧有关，包括阿拉伯联合酋长国等历史上干旱地区的极端天气事件。2024年4月16日至17日，阿联酋经历了一场异常强降水的强风暴，导致广泛的城市洪水，洪水污染以及供水系统交叉污染的可能性。对来自阿联酋沙迦美国大学周围的10个洪水样本进行了分析，以确定新出现的污染物（例如，轮胎衍生的化学品、药品和个人护理产品（PPCPs））和选定金属的存在。轮胎衍生化学品的检测浓度不同：N-（1,3-二甲基丁基）-N ' -苯基-对苯二胺（6PPD）（检出限为26 ng/L）、6PPD-醌（20-270 ng/L）、1,3-二苯胍（DPG）（490-14,340 ng/L）和六（甲氧基甲基）三聚氰胺（HMMM）（70-15,800 ng/L）。四种PPCPs（咖啡因、可替宁、对乙酰氨基酚和利多卡因）在较低浓度（分别为42-779 ng/L、6-179 ng/L、4-196 ng/L和1-7 ng/L）下检测到。在校园外的样本中观察到的所有轮胎衍生化学物质和PPCPs的含量明显更高。金属也被检测到：铝（92-218 µg/L）、铁（49-349 µg/L）、钾（160-3860 µg/L）、锰（3 µg/L）和钡（1-7 µg/L）。相关分析显示，6ppd -醌与HMMM之间存在显著正相关（r = 0.893,p = 0.000507），对乙酰氨基酚、咖啡因、可替宁和利多卡因之间存在显著正相关（r = 0.501-0.980,p <； 0.05），提示其共同来源可能是车辆活动频繁和废水外排。这些发现强调了干旱地区需要在极端天气事件期间实施有针对性的雨水管理和监测战略，以解决洪水驱动的环境污染物动员问题。

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