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Nanotechnology-based strategies for sustainable management of bacterial plant diseases: mechanisms, applications, and future directions 基于纳米技术的植物细菌性病害可持续管理策略:机制、应用和未来方向
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-22 DOI: 10.1039/d5en00936g
Muhammad Babar Malook, Munazza Ijaz, Rafia Ijaz, Jintao Shang, Luqiong Lv, Temoor Ahmed, Muhammad Noman, Salman Ahmad, Xuqing Li, Bin Li
Bacterial plant diseases remain a major constraint to global agriculture, threatening food security through yield losses, quality reduction, and increased production costs. Conventional chemical bactericides are becoming less effective due to pathogen adaptability, resistance development, and ecological concerns, creating an urgent need for innovative and sustainable alternatives. Recent advances in nanotechnology present a transformative opportunity by introducing engineered nanomaterials (ENMs) with unique physicochemical properties such as nanoscale size, enhanced reactivity, and precise delivery capabilities. This review examines the integration of nanotechnology with plant disease management, highlighting strategies such as direct antibacterial action, nanomaterial-based encapsulation, functionalization, and stimuli-responsive delivery systems. Metallic and metal oxide nanoparticles, carbon-based nanomaterials, engineered nanocomposites, polymer-based nanoparticles and nano–phage hybrids are explored for their ability to disrupt pathogen membranes, generate reactive oxygen species (ROS), enhance immune responses, and enable smart, controlled release of antimicrobials. Furthermore, ENMs offer dual benefits by promoting plant growth and priming systemic resistance, creating multifunctional platforms that extend beyond pathogen suppression. By bridging mechanistic insights with practical applications, nanotechnology-enabled interventions have the potential to revolutionize bacterial disease management in crops, offering a sustainable, precise, and eco-friendly alternative to conventional methods, and contributing significantly to agricultural resilience and global food security. The review also addresses critical challenges including biosafety, environmental fate, scalability, standardization, and regulatory barriers.
细菌性植物病害仍然是全球农业的主要制约因素,通过产量损失、质量下降和生产成本增加威胁粮食安全。由于病原体的适应性、耐药性的发展和生态问题,传统的化学杀菌剂正变得越来越不有效,迫切需要创新和可持续的替代品。纳米技术的最新进展通过引入具有独特物理化学性质的工程纳米材料(enm)提供了一个变革性的机会,这些物理化学性质包括纳米级尺寸、增强的反应性和精确的输送能力。本文综述了纳米技术与植物病害管理的整合,重点介绍了诸如直接抗菌作用、基于纳米材料的封装、功能化和刺激响应传递系统等策略。金属和金属氧化物纳米颗粒、碳基纳米材料、工程纳米复合材料、聚合物纳米颗粒和纳米噬菌体杂交体,因为它们具有破坏病原体膜、产生活性氧(ROS)、增强免疫反应和实现智能、可控释放抗菌剂的能力。此外,enm通过促进植物生长和引发系统抗性提供双重好处,创造了超越病原体抑制的多功能平台。通过将机理见解与实际应用联系起来,纳米技术支持的干预措施有可能彻底改变作物的细菌性疾病管理,为传统方法提供一种可持续、精确和生态友好的替代方法,并为农业恢复力和全球粮食安全做出重大贡献。该综述还讨论了包括生物安全、环境命运、可扩展性、标准化和监管障碍在内的关键挑战。
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引用次数: 0
Mechanistic insights into dietary CuO nanoparticles (CuO NPs)-induced hepatic lipotoxicity: The critical role of the Ccs/Mek1/Erk1/2/Pparα pathway and mitochondrial oxidative stress 膳食CuO纳米颗粒(CuO NPs)诱导肝脏脂肪毒性的机制:Ccs/Mek1/ erk1 /Pparα途径和线粒体氧化应激的关键作用
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-22 DOI: 10.1039/d5en01152c
Hong Yang, Peng Zhao, Xiaolei Wei, Chao Huang, Wu-Hong Lv, Yu-Chen Zhou, Zhi Luo
Copper oxide nanoparticles (CuO NPs) are widely used in industry and agriculture, leading to their persistent occurrence and accumulation in aquatic environments and posing potential environmental risks. However, the specific role and underlying mechanisms of CuO NPs on the health risks of aquatic organisms remain unclear. This study revealed that dietary exposure to high levels of CuO NPs elevated hepatic Cu content, induced oxidative stress and mitochondrial dysfunction that exacerbate hepatic lipotoxicity. Mechanistically, high dietary CuO NPs enhanced the interaction between domains 1 and 3 of the Cu chaperone for superoxide dismutase (Ccs) and mitogen-activated protein kinase kinase 1 (Mek1), which subsequently activated the phosphorylation of extracellular signal-regulated protein kinase 1/2 (Erk1T202/Y204 and Erk2T185/Y187). The activated Erk1/2 mediated CuO NPs-induced lipotoxicity by suppressing the expression of peroxisome proliferator-activated receptor α (Pparα) and promoting its phosphorylation at the S77 site. Further investigation demonstrated that Pparα phosphorylation impaired fatty acid β-oxidation by downregulating the promoter activities of long chain acyl-coA dehydrogenase (acadl) and carnitine palmitoyl transferase Ia1b (cptIa1b). For the first time, this study elucidated the novel mechanism by which CuO NPs induced metabolic disorder via the Ccs/Mek1/Erk1/2/Pparα signaling axis. These findings provide critical evidence for the toxicological and environmental risk assessment of nanoparticles, while also deepen the mechanistic understanding of nanometal exposure-induced health effects in aquatic animals within complex environments.
氧化铜纳米颗粒(CuO NPs)广泛应用于工业和农业,导致其在水生环境中持续存在和积累,并带来潜在的环境风险。然而,CuO NPs在水生生物健康风险中的具体作用和潜在机制尚不清楚。本研究表明,饮食中暴露于高水平的CuO NPs会升高肝脏Cu含量,诱导氧化应激和线粒体功能障碍,从而加剧肝脏脂肪毒性。机制上,高CuO NPs增强了Cu伴侣蛋白超氧化物歧化酶(Ccs)和丝裂原活化蛋白激酶1 (Mek1)结构域1和3之间的相互作用,进而激活细胞外信号调节蛋白激酶1/2 (Erk1T202/Y204和Erk2T185/Y187)的磷酸化。激活的Erk1/2通过抑制过氧化物酶体增殖体激活受体α (Pparα)的表达并促进其在S77位点的磷酸化,介导CuO nps诱导的脂肪毒性。进一步研究表明,Pparα磷酸化通过下调长链酰基辅酶a脱氢酶(acadl)和肉毒碱棕榈酰转移酶(cptIa1b)启动子活性来破坏脂肪酸β-氧化。本研究首次阐明了CuO NPs通过Ccs/Mek1/ erk1 /Pparα信号轴诱导代谢紊乱的新机制。这些发现为纳米颗粒的毒理学和环境风险评估提供了重要证据,同时也加深了对复杂环境中水生动物纳米金属暴露引起的健康影响的机制理解。
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引用次数: 0
Molecularly imprinted sensor based on CS/MXene/AuNPs synergy for ultra-trace detection of PFOS in water 基于CS/MXene/AuNPs协同作用的分子印迹传感器超痕量检测水中全氟辛烷磺酸
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-21 DOI: 10.1039/d5en00769k
Xuanxiu Da, Miao Zhou, Bolu Sun, Haoye Zou, Wenya Wang, Zhen Liu, Hongxia Shi, Jia Zhou, Lin Yang, Yonggang Wang
As a key compound widely used in textile, cosmetic, fire protection, and packaging industries, perfluorooctane sulfonic acid (PFOS) pollutes the environment via the hydrological cycle and enters the human body through the food chain, causing severe toxicity to reproductive, endocrine, and liver systems. Thus, highly sensitive detection of trace PFOS in water is crucial for protecting life and health. Based on this, a molecularly imprinted electrochemical sensor based on a chitosan/MXene/gold nanoparticle (CS/MXene/AuNPs) composite was developed for ultra-trace PFOS detection. MXene, with a high specific surface area and excellent conductivity, served as the substrate, enhancing electron transport via in situ AuNP reduction, while CS improved interfacial stability. Using PFOS as a template and pyrrole as the functional monomer, specific imprinted sites were constructed on the electrode via electropolymerization. Synergistic effects of MXene (conductive framework), AuNPs (catalyzing redox), and CS (immobilizing imprinted layer) boosted sensitivity. Results showed a linear range of 1.0 × 101–1.0 × 109 pg mL−1, detection limit of 7.9 pg mL−1 (S/N = 3), and 98.02–102.04% recovery in spiked samples. This strategy provides a selective and low-cost paradigm for monitoring persistent organic pollutants. Furthermore, it holds significant potential for supporting global environmental safety networks, aiding in pollution-induced disease control, and safeguarding ecological security, human health, and sustainable development.
全氟辛烷磺酸(PFOS)是广泛应用于纺织、化妆品、消防、包装等行业的关键化合物,通过水循环污染环境,并通过食物链进入人体,对生殖、内分泌、肝脏等系统造成严重毒性。因此,对水中痕量全氟辛烷磺酸的高灵敏度检测对于保护生命和健康至关重要。在此基础上,研制了一种基于壳聚糖/MXene/金纳米颗粒(CS/MXene/AuNPs)复合材料的分子印迹电化学传感器,用于超痕量PFOS检测。MXene具有较高的比表面积和优异的导电性,作为衬底,通过原位还原AuNP增强了电子传递,而CS提高了界面稳定性。以全氟辛烷磺酸为模板,吡咯为功能单体,通过电聚合在电极上构建特异性印迹位点。MXene(导电框架)、AuNPs(催化氧化还原)和CS(固定化印迹层)的协同作用提高了灵敏度。结果表明:加样回收率为98.02 ~ 102.04%,线性范围为1.0 × 101 ~ 1.0 × 109 pg mL - 1,检出限为7.9 pg mL - 1 (S/N = 3)。这一策略为监测持久性有机污染物提供了一种选择性和低成本的范例。此外,它在支持全球环境安全网络、帮助控制污染引起的疾病、维护生态安全、人类健康和可持续发展方面具有巨大潜力。
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引用次数: 0
Cu nanoparticle-carbon nanofiber stabilized over pelletized biochar for catalytic wet air oxidation of Tetracycline under mild operating conditions 纳米铜-纳米碳纳米纤维在生物炭颗粒上稳定,在温和操作条件下用于催化四环素的湿式空气氧化
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-21 DOI: 10.1039/d5en01121c
Shreerang Mishra, Rahul Gupta, Nishith Verma
Tetracycline (TC), a commonly used antibiotic, poses serious environmental and health problems, even if present in trace amounts in the aqueous systems, including rivers and groundwater. This study introduces the catalytic wet air oxidation (cWAO) technique as an efficient technique for treating TC-laden water, using the pelletized biochar-supported Cu nanoparticle (NP)-tipped graphitic carbon nanofibers (CNFs) as a catalyst. The proposed materials configuration integrates the favourable redox potential and multiple oxidation states of Cu NPs with high electron conductivity of CNFs. Micron-sized biochar is derived by pyrolysis of the naturally resourced bamboo (Bambusa vulgaris) shoots, and serves as a stabilizing matrix for Cu NPs without leaching. Physicochemical characterization reveals the formation of a meso-macroporous structure with the Cu loading of ~10.8 mg/g and abundance of oxygen functional groups. The cWAO activity tests confirm ~99% removal of aqueous TC using 1 g L-1 dose of the pelletized catalyst at 100 °C and 2 bar, with the simultaneous reduction of chemical oxygen demand (~78%) and total organic carbon (~80%). The radical scavenging test and electron paramagnetic resonance analysis confirm the degradation of TC via the radical (•OH and •O2⁻) and non-radical (1O2) pathways. Liquid chromatography-mass spectroscopy analysis confirms the transformation of the TC molecule to reaction intermediates, eventually break-down to CO2 and H2O. The reusability test shows the stability of the catalyst over five oxidation cycles, while the toxicity test confirms the treated cWAO samples to be harmless. The findings clearly underscore the need for further study on the Cu-CNF/biochar pellets for treating the recalcitrant pharmaceutical compounds-laden wastewater by cWAO in a packed bed reactor under flow conditions.
四环素(TC)是一种常用的抗生素,即使微量存在于包括河流和地下水在内的水系统中,也会造成严重的环境和健康问题。本研究介绍了一种以生物炭负载的纳米铜颗粒(NP)为触媒的石墨纳米碳纤维(CNFs)催化湿式空气氧化(cWAO)技术,作为处理含tc水的有效技术。所提出的材料结构将Cu NPs的良好氧化还原电位和多种氧化态与CNFs的高电子导电性结合在一起。微米级的生物炭是由天然资源丰富的竹子(Bambusa vulgaris)嫩枝热解得到的,它可以作为Cu NPs的稳定基质而不被浸出。理化表征表明,该材料形成了含Cu量为~10.8 mg/g、含氧官能团丰富的中-大孔结构。cWAO活性测试证实,在100°C和2 bar条件下,使用1 g L-1剂量的球团催化剂,可去除~99%的含水TC,同时减少化学需氧量(~78%)和总有机碳(~80%)。自由基清除试验和电子顺磁共振分析证实了TC通过自由基(•OH和•O2毒血症)和非自由基(1O2毒血症)途径降解。液相色谱-质谱分析证实TC分子转化为反应中间体,最终分解为CO2和H2O。重复使用性测试表明催化剂在5次氧化循环中具有稳定性,而毒性测试证实处理后的cWAO样品是无害的。研究结果明确表明,需要进一步研究Cu-CNF/生物炭颗粒在流动条件下在填充床反应器中处理含有顽固性药物化合物的废水。
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引用次数: 0
Grouping nanoparticles based on properties and transcriptomic response: Are we dealing with a single nanoform or a set of nanoforms with common pulmonary hazards? 基于性质和转录组反应对纳米颗粒进行分组:我们是在处理单个纳米形式还是一组具有常见肺部危害的纳米形式?
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-20 DOI: 10.1039/d5en01090j
Karolina Jagiełło, Krzesimir Ciura, Viacheslav Muratov, Sattibabu Merugu, Sabina Halappanavar, Pernille Høgh Danielsen, Nicklas Raun Jacobsen, Alicja Mikolajczyk, Ulla Birgitte Vogel
The safety of titanium dioxide nanoparticles (TiO2 NPs) has been a subject of debate for over two decades, primarily due to the lack of consensus on their toxicity. A comprehensive understanding of the molecular-level toxicity of TiO2 NPs is essential for accurate safety evaluations and effective risk mitigation strategies. Thus, this study aims to elucidate the relationship between the physicochemical properties of TiO2 NPs and their pulmonary toxicity at the molecular level. Additionally, it seeks to determine whether these properties and the corresponding transcriptomic responses can facilitate the categorization of TiO2 nanoforms into groups with similar pulmonary hazards. Through the integration of bioinformatics and machine learning algorithms to analyze genome-wide transcriptomic profiles, we identified size, specific surface area, reactive oxygen species (ROS) production, crystalline structure, and surface modification as key determinants of TiO2 NP toxicity at the transcriptomic level. Furthermore, we observed that different nanoforms of TiO2 NPs, characterized by varying properties, can elicit distinct molecular-level responses, indicating that transcriptomic pathways are subject to different modes of perturbation. Our findings offer valuable insights into the safety considerations of TiO2 NPs and lay the groundwork for future strategies to group nanoforms with similar patterns of hazards.
二氧化钛纳米颗粒(TiO2 NPs)的安全性已经争论了20多年,主要是由于对其毒性缺乏共识。全面了解TiO2 NPs的分子水平毒性对于准确的安全性评估和有效的风险缓解策略至关重要。因此,本研究旨在从分子水平上阐明TiO2 NPs的理化性质与其肺毒性之间的关系。此外,该研究旨在确定这些特性和相应的转录组反应是否有助于将TiO2纳米形态分类为具有相似肺部危害的组。通过整合生物信息学和机器学习算法来分析全基因组转录组谱,我们确定了大小、比表面积、活性氧(ROS)的产生、晶体结构和表面修饰是TiO2 NP毒性在转录组水平上的关键决定因素。此外,我们观察到不同纳米形式的TiO2 NPs具有不同的性质,可以引起不同的分子水平响应,这表明转录组通路受到不同模式的扰动。我们的研究结果为TiO2 NPs的安全性提供了有价值的见解,并为未来将具有类似危害模式的纳米形态分组奠定了基础。
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引用次数: 0
Correction: Characterizing nanoplastic suspensions of increasing complexity: inter-laboratory comparison of size measurements using dynamic light scattering 修正:表征日益复杂的纳米塑料悬浮液:使用动态光散射进行尺寸测量的实验室间比较
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-19 DOI: 10.1039/d6en90001a
Korinna Altmann, Raquel Portela, Francesco Barbero, Esther Breuninger, Laura Maria Azzurra Camassa, Tanja Cirkovic Velickovic, Costas Charitidis, Anna Costa, Marta Fadda, Petra Fengler, Ivana Fenoglio, Andrea M. Giovannozzi, Øyvind Pernell Haugen, Panagiotis Kainourgios, Frank von der Kammer, Markus J. Kirchner, Madeleine Lomax-Vogt, Tamara Lujic, Frank Milczewski, Mhamad Aly Moussawi, Simona Ortelli, Tatjana N. Parac-Vogt, Annegret Potthoff, Julian J. Reinosa, Sophie Röschter, Alessio Sacco, Lukas Wimmer, Ilaria Zanoni, Lea Ann Dailey
Correction for ‘Characterizing nanoplastic suspensions of increasing complexity: inter-laboratory comparison of size measurements using dynamic light scattering’ by Korinna Altmann et al., Environ. Sci.: Nano, 2025, 12, 5242–5256, https://doi.org/10.1039/D5EN00645G.
修正了Korinna Altmann等人在Environ发表的“表征日益复杂的纳米塑料悬浮液:使用动态光散射进行尺寸测量的实验室间比较”。科学。:纳米,2025,12,5242-5256,https://doi.org/10.1039/D5EN00645G。
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引用次数: 0
Beyond single nanomaterial exposure: investigating the fate of a TiO2 and CeO2 nanomaterial mixture in freshwater mesocosms 超越单一纳米材料暴露:研究TiO2和CeO2纳米材料混合物在淡水生态系统中的命运
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-16 DOI: 10.1039/d5en00871a
Amazigh Ouaksel, Danielle Slomberg, Martina Cotena, Lenka Brousset, Bernard Angeletti, Dhoubidane Aboudou, Alain Thiéry, Corinne Chanéac, Jeanne Perrin, Jerome Rose, Melanie Auffan
Assessing the environmental risks of emerging contaminants related to new technologies remains a major challenge due to the diversity of pollutants, their complex interactions, and the limitations of conventional testing frameworks. Among these contaminants, engineered nanomaterials (ENMs) stand out for their unique surface reactivities and transformation pathways, which can significantly alter their behavior and that of co-occurring pollutants. Although many studies have addressed the toxicity and fate of individual ENMs, real-world scenarios often involve complex mixtures, whose combined effects are less investigated. This study addresses this gap by investigating the fate, behavior, and ecological impacts of a mixture of two representative metal oxide ENMs i.e. an industrial TiO2 and a combustion-derived CeO2. This study shows that under environmentally relevant conditions using freshwater mesocosms, these two ENMs undergo primary hetero-aggregation. Co-exposure of the freshwater snail Planorbarius corneus revealed that ENM aggregates (homo- or primary hetero-aggregates) interact with egg layings, potentially affecting early developmental stages, while slight but measurable uptakes were also observed in co-exposed adult snails. Importantly, no quenching of reactive oxygen species generated by the photocatalytic TiO2 was detected in the presence of CeO2, suggesting that the combusted CeO2 does not mitigate potentially TiO2-induced phototoxicity. These findings underscore the importance of considering ENM mixtures in environmental risk assessments and the relevance of mesocosm experiments to capture realistic exposure scenarios. Future studies should prioritize investigating how unique surface reactivities and transformation mechanisms of ENM mixtures shape their ecological impacts throughout their life cycles.
由于污染物的多样性、它们之间复杂的相互作用以及传统测试框架的局限性,评估与新技术相关的新兴污染物的环境风险仍然是一项重大挑战。在这些污染物中,工程纳米材料(enm)以其独特的表面反应性和转化途径而脱颖而出,这可以显著改变其行为和共存污染物的行为。虽然许多研究已经解决了单个enm的毒性和命运,但现实世界的情况往往涉及复杂的混合物,其综合效应研究较少。本研究通过研究两种具有代表性的金属氧化物enm(即工业TiO2和燃烧衍生的CeO2)的混合物的命运、行为和生态影响来解决这一空白。本研究表明,在环境相关条件下,使用淡水中生态系统,这两种enm发生了初级异聚集。对淡水蜗牛Planorbarius corneus的共同暴露表明,ENM聚集体(同源或初级异质聚集体)与产卵相互作用,可能影响早期发育阶段,而在共同暴露的成年蜗牛中也观察到轻微但可测量的吸收。重要的是,在CeO2存在的情况下,没有检测到光催化TiO2产生的活性氧猝灭,这表明燃烧的CeO2不会减轻潜在的TiO2诱导的光毒性。这些发现强调了在环境风险评估中考虑ENM混合物的重要性,以及中生态实验对捕获现实暴露情景的相关性。未来的研究应优先研究ENM混合物在整个生命周期中独特的表面反应性和转化机制如何影响其生态影响。
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引用次数: 0
Nanomolar Level Detection of Chemotoxic [UO2]2+ Ions by a Free Carboxylate Anchored Metal-Organic Framework 游离羧酸盐锚定金属-有机骨架在纳米摩尔水平上检测化学毒性[UO2]2+离子
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-16 DOI: 10.1039/d5en01022e
Sk Sakir Hossain, Shyam Biswas
The enrichment of chemotoxic uranium in the environment due to the rapid expansion of the nuclear industry to fulfil the growing energy demand has led to serious risks to human and ecological health. Despite the development of several analytical techniques for detecting uranyl ions in water, the development of sensors that offer exceptional sensitivity, selectivity, and structural stability remains a pressing challenge. In this work, a novel zirconium(IV)-based luminescent metal-organic framework (MOF), denoted as 1 with a tricarboxylic acid functionalized ligand, was solvothermally synthesized. The activated form of the MOF (1′) was utilized as a fluorometric sensor for uranyl ions ([UO2]2+). Remarkably, the uranyl ions interact with the free carboxylate functionality of 1′, inducing significant quenching of the luminescence of 1′. The sensor exhibits outstanding detection with a high Stern-Volmer (S-V) constant (KSV = 3.34×106 M⁻¹) and an ultra-low limit of detection (LOD) of 3.2 nM (0.76 ppb). Further validation in real-world samples revealed high detection performance, even in the presence of various competing ions. The MOF maintained high sensitivity towards [UO2]2+ in various natural water systems, including lake water, river water, and seawater. The mechanistic aspects of sensing were thoroughly studied with various analytical techniques and literature reviews.
为满足日益增长的能源需求,核工业迅速扩张,导致环境中化学毒性铀的富集,对人类健康和生态健康造成严重风险。尽管开发了几种用于检测水中铀酰离子的分析技术,但开发具有卓越灵敏度、选择性和结构稳定性的传感器仍然是一个紧迫的挑战。本文采用溶剂热合成了一种新型的基于三羧酸功能化配体的锆基发光金属有机骨架(MOF),记为1。MOF(1’)的活化形式被用作铀酰离子([UO2]2+)的荧光传感器。值得注意的是,铀酰离子与1 ‘的游离羧酸官能团相互作用,导致1 ’的发光明显猝灭。该传感器具有很高的斯特恩-沃尔默(S-V)常数(KSV = 3.34×106 M⁻¹)和3.2 nM (0.76 ppb)的超低检测限(LOD)。进一步验证在现实世界的样品显示高检测性能,即使在各种竞争离子的存在。MOF在各种自然水系中(包括湖水、河水和海水)对[UO2]2+保持较高的敏感性。通过各种分析技术和文献综述,对传感的机制方面进行了深入研究。
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引用次数: 0
pH-dependent transport of neonicotinoid pesticides in saturated soil: single and combined functions of rhamnolipid and biochar colloids 饱和土壤中新烟碱类农药的ph依赖转运:鼠李糖脂和生物炭胶体的单一和联合作用
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-15 DOI: 10.1039/d5en00982k
Lixia Li, Tao Jia, Zhichong Qi, Usman Farooq, Yanbin Ma, Fanyan Yang, Minghui Lv, Taotao Lu
Applying biochar as an amendment for the remediation of neonicotinoid pesticide-contaminated soils is a promising way to reduce the environmental risks posed by these pollutants. Rhamnolipid, a widespread glycolipid biosurfactant in soils, may regulate the transport of biochar colloids and/or pesticides in soil–water environments. Currently, critical knowledge gaps remain regarding how biosurfactant/biochar affects neonicotinoid pesticide mobility. Herein, rhamnolipid was employed to explore its influences on neonicotinoid pesticide (acetamiprid or nitenpyram) mobility and biochar colloid-affected mobility of pesticides at variable solution pH levels (5.0–9.0). In the binary system, rhamnolipid restrained pesticide transport owing to the biosurfactants' bridging effects, forming soil–biosurfactant–pesticide ternary complexes; similarly, biochar colloids also inhibited pesticide mobility because of colloid–pesticide complex deposited on soil surfaces. Notably, the degree of the inhibiting impacts of biochar/biosurfactant varied with pesticide types (acetamiprid > nitenpyram), which was attributed to differences in the chemical features of pesticides (e.g., hydrophobicity). Interestingly, the pH-dependent inhibition effects followed the order pH 5.0 > pH 7.0 > pH 9.0, which were ascribed to the different deposition amounts of biosurfactant molecules or biochar colloids. Surprisingly, in the ternary system, adding biosurfactant weakened the repressive influences of biochar colloids on pesticide migration over a broad pH range of 5.0 to 9.0 because of the reduced retention of colloid-associated pesticides and the great mobility of free neonicotinoid pesticides. Additionally, the degree of rhamnolipid's suppressive effects declined as the pH value increased. These findings provide critical insights into the environmental behaviors and fate of neonicotinoid pesticides influenced by ubiquitous biosurfactants in biochar-amended soils.
应用生物炭作为修复新烟碱类农药污染土壤的改良剂,是降低新烟碱类农药污染土壤环境风险的有效途径。鼠李糖脂是一种广泛存在于土壤中的糖脂类生物表面活性剂,可调节土壤-水环境中生物炭胶体和/或农药的运输。目前,关于生物表面活性剂/生物炭如何影响新烟碱类农药的流动性,仍然存在关键的知识空白。本研究以鼠李糖脂为研究对象,探讨了在不同pH值(5.0-9.0)下鼠李糖脂对新烟碱类农药(啶虫脒或尼虫啶)迁移率的影响,以及生物炭胶体对农药迁移率的影响。在二元体系中,鼠李糖脂通过生物表面活性剂的桥接作用抑制农药的迁移,形成土壤-生物表面活性剂-农药三元配合物;同样,由于胶体-农药复合物沉积在土壤表面,生物炭胶体也抑制了农药的流动性。值得注意的是,生物炭/生物表面活性剂的抑制作用程度随农药类型(啶虫脒和尼虫啶)的不同而不同,这是由于农药的化学特性(如疏水性)的差异。有趣的是,pH依赖性的抑制效果依次为pH 5.0 > pH 7.0 > pH 9.0,这归因于生物表面活性剂分子或生物炭胶体的沉积量不同。令人惊讶的是,在三元体系中,添加生物表面活性剂削弱了生物炭胶体对农药迁移的抑制作用,在5.0 ~ 9.0的宽pH范围内,这是因为胶体相关农药的保留率降低,游离新烟碱类农药的流动性很大。此外,鼠李糖脂的抑制作用程度随着pH值的增加而降低。这些发现对生物炭改性土壤中普遍存在的生物表面活性剂对新烟碱类农药的环境行为和命运的影响提供了重要的见解。
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引用次数: 0
Translocation of nanoplastics from soil to crops impairs pollen viability with potential implications to pollinators 纳米塑料从土壤转移到作物会损害花粉活力,对传粉者有潜在影响
IF 8.131 2区 环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY Pub Date : 2026-01-12 DOI: 10.1039/d5en00969c
Asia Piovesan, Sara Quartieri, Claudia Faleri, Arianna Bellingeri, Massimo Nepi, Maya Al-Sid-Cheikh, Ilaria Corsi
Soils are nowadays considered among the major storage sites and sources of nanoplastic (size < 1000 nm) entering the natural environment through sewage sludge, abandoned wastes, agricultural activities, and atmospheric deposition. Due to their peculiar chemical and physical properties, nanoplastics can easily interact with plants including crops and potentially translocate up to leaf and flowers entering the food chain, with potential toxic effects to the plants as well as exposing pollinators. In the present study, we assess 1) the uptake, translocation, and effects of nanopolystyrene (PSNPs, approx. 20nm) in pumpkin Cucurbita pepo L. as a model crop plant and 2) PSNPs translocation in flowers and effects on pollen. To investigate the uptake and translocation of PSNPs, we used 14C-radiolabeled PSNPs ([14C]PSNPs) at concentrations similar to those expected in the environment (1 μgL-1) and under worst-case pollution scenarios (1 mgL-1). Effect of PSNPs on the crops have been observed from both labeled and unlabelled particles. Effects have been observed during the germination up to plant development and flower production in the pumpkin Cucurbita pepo L. . For the first time, our study provides evidence of [14C]PSNP uptake by plant roots and translocation from roots to flowers, with subsequent effects on pollen. Most notably, PSNP effects were observed on the apical region of secondary roots which reveals a significant increase in the ROS production and in primary leaves with significant reduction in the efficiency of photosystems. [14C]PSNPs was detected in pumpkin flowers and mostly in the anthers whose pollen showed a significant reduction in the viability associated with abnormalities in morphology and hydration. Our study provides compelling evidence that nanoplastics are capable of translocating from soil up to the flowers and affecting pollen raising significant food safety concerns and ecological implications on pollinators. These results are particularly alarming given the current multiple challenges faced by pollinators, such as climate change, pesticides and habitat degradation.
如今,土壤被认为是纳米塑料(尺寸为1000纳米)通过污水污泥、废弃废物、农业活动和大气沉降进入自然环境的主要储存场所和来源之一。由于其特殊的化学和物理性质,纳米塑料很容易与包括作物在内的植物相互作用,并可能转移到进入食物链的叶子和花朵上,对植物产生潜在的毒性作用,并暴露传粉者。在本研究中,我们评估了1)纳米聚苯乙烯(PSNPs)的摄取、转运和影响。2) PSNPs在花中的易位及其对花粉的影响。为了研究PSNPs的摄取和易位,我们使用了14C放射性标记的PSNPs ([14C]PSNPs),浓度与环境(1 μgL-1)和最坏污染情景(1 mg -1)相似。从标记和未标记的颗粒上观察了PSNPs对作物的影响。在南瓜萌发至植株发育和开花过程中观察到不同浓度的小麦对南瓜的影响。我们的研究首次提供了[14C]PSNP被植物根吸收并从根转运到花的证据,并随后对花粉产生影响。最值得注意的是,在次生根的顶端区域观察到PSNP的影响,这表明活性氧的产生显著增加,而在初生叶中,光系统的效率显著降低。[14C]在南瓜花中检测到psnp,且主要存在于花药中,其花粉表现出与形态和水化异常相关的活力显著降低。我们的研究提供了令人信服的证据,证明纳米塑料能够从土壤转移到花朵上,并影响花粉,这引起了重大的食品安全问题和对传粉媒介的生态影响。考虑到传粉媒介目前面临的多重挑战,如气候变化、农药和栖息地退化,这些结果尤其令人震惊。
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引用次数: 0
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Environmental Science: Nano
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