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Passivation Performance and Mechanism of a Novel Self-Healing Composite Passivator on Pyrite 新型自愈合复合钝化剂在黄铁矿上的钝化性能与机理
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00404c
Weifeng Wu, Mengke Li, Jiang Tian, Feng Li, Yun Liu
{"title":"Passivation Performance and Mechanism of a Novel Self-Healing Composite Passivator on Pyrite","authors":"Weifeng Wu, Mengke Li, Jiang Tian, Feng Li, Yun Liu","doi":"10.1039/d4en00404c","DOIUrl":"https://doi.org/10.1039/d4en00404c","url":null,"abstract":"Acid mine drainage (AMD) is a harmful effluent from mining activities. Surface passivation technology can prevent AMD production by coating minerals with passivation films. Previous study reported a composite passivator comprising γ-mercaptopropyltrimethoxysilane (PropS-SH) and halloysite loaded with benzotriazole (BTA). However, two issues persist in this work: the organosilane-based passivator requires passivating pyrite at 50~100 °C, and the encapsulation method for the guest passivator in halloysite is limited. To address these challenges, a novel self-healing composite passivator (PLHP passivator) was synthesized, using PropS-SH and lawsone as the main passivation agents and halloysite loaded with 8-HQ as the nanofillers. Polyelectrolytes were employed as the encapsulant within the nanofillers. The formation of a hydrophobic coating on the PLHP coated pyrite surface was revealed by SEM and contact angle tests. The enhanced oxidation resistance of PLHP coated pyrite over raw pyrite and other coated pyrite was verified by electrochemical measurements and chemical leaching tests. Notably, the PLHP coatings could passivate pyrite at room temperature, exhibiting excellent long-term stability and self-healing ability. Furthermore, the incorporation of polyelectrolytes expanded the application range of guest passivator. This paper provides new insights into overcoming the limitations of organosilane-based passivation and self-healing methods in current technology.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A design-phase Environmental Safe-and-Sustainable-by-Design Categorization Tool for the Development and Innovation of Nano-enabled Advanced Materials (AdMaCat) 用于纳米先进材料开发与创新的设计阶段环境安全与可持续设计分类工具 (AdMaCat)
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00068d
Analuisa Rubalcaba Medina, Fernando J. Rodríguez-Macías, Anders Baun, Steffen Foss Hansen
{"title":"A design-phase Environmental Safe-and-Sustainable-by-Design Categorization Tool for the Development and Innovation of Nano-enabled Advanced Materials (AdMaCat)","authors":"Analuisa Rubalcaba Medina, Fernando J. Rodríguez-Macías, Anders Baun, Steffen Foss Hansen","doi":"10.1039/d4en00068d","DOIUrl":"https://doi.org/10.1039/d4en00068d","url":null,"abstract":"In support of the European Union’s circular economy action plans and its chemical strategy for sustainability, initiatives are being developed aimed at integrating ‘safe and sustainable by design’ (SSbD) principles and approaches in the development of chemicals and materials to promote a toxic-free environment. The expected widespread use of advanced materials (AdMa) underlines the need for addressing sustainability and environmental safety as early as possible in the material design. Here, we present AdMaCat, which is a SSbD first-tier screening categorization tool addressing environmental concerns of AdMa. The tool is aimed at the early design-phase in materials development, to enable a transparent and systematic evaluation of the functionality, safety, and sustainability of AdMa in a circular economy context. AdMaCat delivers a color coded output with design recommendations covering the material life-cycle stages manufacturing, use, and end-of-life. The applicability of AdMaCat is illustrated through a case study on organic aerogels for insulation purposes focusing on material and process selections, application, and waste management options. We conclude that AdMaCat can assist in identifying data gaps and inform decisions regarding the design of tailored AdMa by optimizing the balance of functionality, safety, and sustainability in a circular economy.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Outstanding Reviewers for Environmental Science: Nano in 2023 环境科学》杰出评审员:2023 年的纳米
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en90023e
{"title":"Outstanding Reviewers for Environmental Science: Nano in 2023","authors":"","doi":"10.1039/d4en90023e","DOIUrl":"https://doi.org/10.1039/d4en90023e","url":null,"abstract":"We would like to take this opportunity to thank all of <em>Environmental Science: Nano</em>'s reviewers for helping to preserve quality and integrity in chemical science literature. We would also like to highlight the Outstanding Reviewers for <em>Environmental Science: Nano</em> in 2023.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced removal of As(III) by manganese-doped defective UiO-66 coupled peroxymonosulfate: multiple reactive oxygen species and system stability 锰掺杂缺陷 UiO-66 耦合过氧单硫酸盐增强对 As(III) 的去除:多种活性氧物种和系统稳定性
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00194j
Zihao Xie, Qingyun He, Shaobo Liu, Xinyi Huang, Mingyang Dai, Qiang Chen, Ang Sun, Jian Ye, Xiaofei Tan, Weihua Xu
{"title":"Enhanced removal of As(III) by manganese-doped defective UiO-66 coupled peroxymonosulfate: multiple reactive oxygen species and system stability","authors":"Zihao Xie, Qingyun He, Shaobo Liu, Xinyi Huang, Mingyang Dai, Qiang Chen, Ang Sun, Jian Ye, Xiaofei Tan, Weihua Xu","doi":"10.1039/d4en00194j","DOIUrl":"https://doi.org/10.1039/d4en00194j","url":null,"abstract":"Structurally defective UiO-66 has garnered significant interest due to its remarkable performance in the domains of adsorption and catalysis. In this research, the successful synthesis of Mn-doped defective UiO-66 (Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66) was confirmed by XRD and FTIR characterization. More than 95% of As(<small>III</small>) (<em>C</em><small><sub>0</sub></small> = 1.1 mg L<small><sup>−1</sup></small>) was removed in 1 h (<em>C</em><small><sub>catalyst</sub></small> = 0.2 g L<small><sup>−1</sup></small>, <em>C</em><small><sub>PMS</sub></small> = 0.1 mM). Compared with the original UiO-66, when coupled with peroxymonosulfate (PMS), Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66 accelerated the generation of reactive oxygen species (ROS), resulting in an increase in As(<small>III</small>) removal efficiency by about 50%. XPS spectra and EXAFS spectra indicated that As(<small>III</small>) adsorbed in the Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66/PMS system was fully oxidized to As(<small>V</small>) and the adsorption was attributed to As–O–Zr coordination. Several types of ROS (·OH, SO<small><sub>4</sub></small>˙<small><sup>−</sup></small>, and O<small><sub>2</sub></small>˙<small><sup>−</sup></small>) generated by PMS activation acted collectively on As(<small>III</small>) oxidation, so a single ROS scavenger did not have a marked inhibitory effect on As(<small>III</small>) removal. In addition, the system maintained efficiency over a broad pH range (3–11), and retained an arsenic removal rate higher than 89.8% even in the presence of high concentrations of several anions (SO<small><sub>4</sub></small><small><sup>2−</sup></small>/Cl<small><sup>−</sup></small>/NO<small><sub>3</sub></small><small><sup>−</sup></small>, 10 mM). Meanwhile, 99.3% of the As(<small>III</small>) could be removed by Mn<small><sub>1</sub></small>D<small><sub>40</sub></small>UiO-66 at extremely high humic acid concentrations (100 mg L<small><sup>−1</sup></small>). Due to the excellent stability of the material, only trace amounts of metal leaching were detected (Mn ion ≤ 3 μg L<small><sup>−1</sup></small>) during the whole experiment. The whole oxidation and adsorption process demonstrated excellent anti-interference ability and stability. This study shows the great potential of transition metal doped defective metal–organic frameworks in the field of adsorption and catalysis and provides a novel idea for the high-efficiency management of As(<small>III</small>) pollution in water environments.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A metal-free photocatalytic active hybrid fiber as a novel self-cleaning adsorbent for enhanced tetracycline removal 一种作为新型自清洁吸附剂的无金属光催化活性杂化纤维,可提高四环素的去除率
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-12 DOI: 10.1039/d4en00387j
Kaijie Ni, Ruiqi Xu, Yanlong Chen, Ming Guo
{"title":"A metal-free photocatalytic active hybrid fiber as a novel self-cleaning adsorbent for enhanced tetracycline removal","authors":"Kaijie Ni, Ruiqi Xu, Yanlong Chen, Ming Guo","doi":"10.1039/d4en00387j","DOIUrl":"https://doi.org/10.1039/d4en00387j","url":null,"abstract":"Metal-free photocatalytic degradation of pollutant is an eco-friendly green method for wastewater remediation. Herein we reported using amine modified alginate as anchor line, graphene oxide (GO) and carbon nanotubes (CNT) as photoactive units to fabricate a recyclable metal-free photocatalytic active hybrid fiber via facile carbodiimine-mediated amide coupling and calcium ion crosslinking. The results show that the photoactive fiber with unique microporosity and enhanced thermal stability has been successfully prepared. The prepared fiber presented a significantly photo-enhanced removal effect on tetracycline (TC). The efficiency of TC removal promoted by the fiber under solar irradiation is 10 times higher than that under dark. In the photocatalytic treatment of TC, the fiber also showed higher TC removal efficiency than that of GO and CNT alone synergistic effect of GO/CNT. Electron spin resonance analysis confirmed that the fiber under solar irradiation induced to the generation of <small><sup>1</sup></small>O<small><sub>2</sub></small> and hole (h<small><sup>+</sup></small>) which degraded TC. UV-vis spectra analysis indicated that GO and CNT components in the fiber promoted TC to undergo oxidative degradation. Major transformation products during TC removal were identified with Liquid chromatography mass spectrometry. Finally, such photoactivity of the fiber can be utilized to develop a convenient irradiation/agitation regeneration approach to make the fiber adsorbent reusable. The recycled fiber maintained an excellent level of TC removal performance after multiple recycling steps. Overall, this study provides a new strategy of preparing a recycled metal-free photocatalytic material for water treatment, and is of great reference value for research in this field.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MOF-5 Fortified Fiber Optic Plasmonic Absorption-based Pb(II) Ion Sensor for Rapid Water Quality Monitoring 用于快速水质监测的 MOF-5 强化光纤质子吸收型铅(II)离子传感器
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-11 DOI: 10.1039/d4en00197d
Swetha Menon, Sourav Dutta, Narayanan Madaboosi, V. V. R. Sai
{"title":"MOF-5 Fortified Fiber Optic Plasmonic Absorption-based Pb(II) Ion Sensor for Rapid Water Quality Monitoring","authors":"Swetha Menon, Sourav Dutta, Narayanan Madaboosi, V. V. R. Sai","doi":"10.1039/d4en00197d","DOIUrl":"https://doi.org/10.1039/d4en00197d","url":null,"abstract":"Precise detection of heavy metal ions in water is of paramount importance owing to its detrimental effects on human health, especially with spectroscopically silent ions such as lead ions (Pb(II)). This study demonstrates the design and development of a novel portable and field-deployable fiber optic plasmonic absorption-based chemical sensor (PACS) for Pb(II) ion detection using a metal-organic framework (MOF-5) as a highly selective chemoreceptor. MOF-5 was grown in situ over the tannic acid-capped gold nanoparticles (AuNP, 20 nm) of the plasmonic U-bent fiber optic sensor (U-FOS) probes. The Pb(II) ion binding to MOF-5 was detected and quantified as an increase in the plasmonic absorption of the light by AuNP due to significant refractive index changes at the AuNP surface. Besides an excellent selectivity (Pb(II) vs. 11 potential interfering metal ions at 1:50 ppm), these sensors manifest a detection limit down to 0.5 ppb (20 times below the maximum contaminant level of 10 ppb), a wide dynamic range (0.5 ppb to 50 ppm). The sensor was challenged with filtered sewage samples (neat and spiked with 10 ppb) yielded recovery rates within 91% to 105% with respect to the standard ICP-MS analysis. With the notable merits of a facile and scalable probe fabrication process, long shelf-life (at least 12 weeks moisture-free storage), and simpler instrumentation (only with an LED-photodetector pair), the PACS/MOF-5 platform is highly promising for water quality measurements on-site.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bioremediation: An Economical Approach for Treatment of Textile Dye Effluents 生物修复:处理纺织染料废水的经济方法
IF 2.52 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2024-07-11 DOI: 10.1007/s11270-024-07287-y
Khirabdhi Tanaya, Anamika Kumari, Anil Kumar Singh, Durgeshwer Singh
{"title":"Bioremediation: An Economical Approach for Treatment of Textile Dye Effluents","authors":"Khirabdhi Tanaya, Anamika Kumari, Anil Kumar Singh, Durgeshwer Singh","doi":"10.1007/s11270-024-07287-y","DOIUrl":"https://doi.org/10.1007/s11270-024-07287-y","url":null,"abstract":"<p>Dye is a substance that imparts colour onto textiles, fabrics, paper, leather, etc. and is not altered by washing, heating, and light. Dyes were extracted from plants, animals, and minerals until synthetic dyes came to the market, as synthetic dyes were more stable, readily available, and inexpensive. Despite being extremely important to the economy, they have been among the most significant global polluters. Textile dye industries have become the chief source of water pollution, with their effluents increasing the turbidity of water and reducing photosynthesis and dissolved oxygen levels. This leads to significant damage to aquatic biodiversity, threatening the survival of many species. Synthetic dyes have carcinogenic, mutagenic, and genotoxic effects on animals and human beings, posing a severe health risk. The degradation of dyes is essential for ensuring the sustainability of the environment for future generations. The traditional physicochemical means of dye treatment are not convenient because of the high solubility in water, cost of method utilisation and other disadvantages related to these techniques. To overcome the disadvantages of physicochemical treatment, biological methods or bioremediation can be used as an alternative. The objective of this review article is to study the mechanisms involved in the degradation of textile dyes by bacteria to obtain sustainable, economically and ecologically sound solutions for dye treatment. This paper will explain the various types of natural and synthetic dyes utilised in the textile industry, their chemistry, and how they affect water and soil ecosystems. The treatment of textile dye by various physicochemical methods and their advantages and disadvantages are also discussed. In bioremediation, the microorganisms utilize organic pollutants as a source of food or energy. Bioremediation uses biosorption and enzymatic activity for dye degradation, which does not disturb natural processes and is thus sustainable. The microorganisms secrete crucial extracellular and intracellular enzymes that carry out decolourisation and degradation through a series of events, which include hydrolysis, acidogenesis, and methanogenesis. We will discuss how aerobic and anaerobic microorganisms degrade these textile dyes through the process of biodegradation and bioaugmentation and how this technology provides a clean and eco-friendly method for removing textile dyes.</p>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":2.52,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Effect of a Hydrophilic Polymer on the Morphology of Polymeric Membranes and the Retention of Metals 亲水性聚合物对聚合物膜形态和金属截留的影响
IF 2.52 4区 环境科学与生态学
Water, Air, & Soil Pollution Pub Date : 2024-07-11 DOI: 10.1007/s11270-024-07324-w
Yasemin Yildiz, Aynur Manzak
{"title":"The Effect of a Hydrophilic Polymer on the Morphology of Polymeric Membranes and the Retention of Metals","authors":"Yasemin Yildiz, Aynur Manzak","doi":"10.1007/s11270-024-07324-w","DOIUrl":"https://doi.org/10.1007/s11270-024-07324-w","url":null,"abstract":"<p>Polyethylene glycol (PEG) is a preferred hydrophilic polymer as an additive for casting solutions. In this study, polymeric membranes containing 1,10-phenanthroline and different molecular weights of polyethylene glycol (PEG) are tested for the morphological change and metal retention on the membrane surface. Additives in the form of PEGs with molecular weights of 400 Da, 600 Da, and 6000 Da were used. The morphology of each membrane was examined using scanning electron microscopy (SEM). It appears that copper has more retention than cadmium in all membrane components in SEM–EDS analysis. FTIR spectra findings provided evidence that PEG binds to the PVC backbone through hydrogen bonds involving chlorine atoms in the PVC and hydrogen atoms in the hydroxyl groups of PEG. The porosity of the membrane was determined by gravimetric method. The molecular weight of PEG in the membrane seems to be increasing, the porosity of the membrane improved. The porosity of the membrane obtained with PVC/ PEG/ 1,10-phenanthroline is 62.85 for PEG 400, 80.00 for PEG 600 and 83.50 for PEG 6000. The order of metal retention on the surface of the membranes consisting of PVC-1,10 phenanthroline and PEGs are Cu &gt; Cd, indicating that with its large diameter (140 pm), cadmium cannot settle into the pores as much as copper. Except for PEG 600, the retention of both metals decreased with the addition of phenanthroline to the membrane containing PEG. The amorphous structure was detected from the XRD of the membranes. Thermal analysis of the membrane was determined by TG-DSC.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":null,"pages":null},"PeriodicalIF":2.52,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies 不同用水策略的树木对纳米塑料的吸收和生理影响
IF 8.131 2区 环境科学与生态学
Environmental Science: Nano Pub Date : 2024-07-11 DOI: 10.1039/d4en00286e
Maria Elvira Murazzi, Alice Pradel, Roman B. Schefer, Arthur Gessler, Denise M. Mitrano
{"title":"Uptake and physiological impacts of nanoplastics in trees with divergent water use strategies","authors":"Maria Elvira Murazzi, Alice Pradel, Roman B. Schefer, Arthur Gessler, Denise M. Mitrano","doi":"10.1039/d4en00286e","DOIUrl":"https://doi.org/10.1039/d4en00286e","url":null,"abstract":"Anthropogenic contaminants can place significant stress on vegetation, especially when they are taken up into plants. Plastic pollution, including nanoplastics (NPs), could be detrimental to tree functioning, by causing, for example, oxidative stress or reducing photosynthesis. While a number of studies have explored the capacity of plants to take up NPs, few have simultaneously assessed the functional damage due to particulate matter uptake. To quantify NPs uptake by tree roots and to determine whether this resulted in subsequent physiological damage, we exposed the roots of two tree species with different water use strategies in hydroponic cultures to two concentrations (10 mg L<small><sup>−1</sup></small> and 30 mg L<small><sup>−1</sup></small>) of model metal-doped polystyrene NPs. This approach allowed us to accurately quantify low concentrations of NPs in tissues using standard approaches for metal analysis. The two contrasting tree species included Norway spruce (<em>Picea abies</em> [L.] Karst), a water conservative tree, and wild service tree (<em>Sorbus torminalis</em> [L.] Crantz), an early successional tree with a rather water spending strategy. At both exposure concentrations and at each of the experimental time points (two and four weeks), NPs were highly associated and/or concentrated inside the tree roots. In both species, maximum concentrations were observed after 2 weeks in the roots of the high concentration (HC) treatment (spruce: 2512 ± 304 μg NPs per g DW (dry weight), wild service tree: 1190 ± 823 μg NPs per g DW). In the aboveground organs (stems and leaves or needles), concentrations were one to two orders of magnitude lower than in the roots. Despite relatively similar NPs concentrations in the tree aboveground organs across treatments, there were different temporal impacts on tree physiology of the given species. Photosynthetic efficiency was reduced faster (after 2 weeks of NPs exposure) and more intensively (by 28% in the HC treatment) in wild service trees compared to Norway spruce (<em>ca.</em> 10% reduction only after 4 weeks). Our study shows that both, evergreen coniferous as well as deciduous broadleaf tree species are negatively affected in their photosynthesis by NPs uptake and transport to aboveground organs. Given the likelihood of trees facing multiple, concurrent stressors from anthropogenic pollution and climate change, including the impact of NPs, it is crucial to consider the cumulative effects on vegetation in future.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":8.131,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diverse growth rates in Triassic archosaurs-insights from a small terrestrial Middle Triassic pseudosuchian. 三叠纪古龙的不同生长速度--来自三叠纪中期小型陆生伪蜥的启示。
IF 2.1 3区 生物学
The Science of Nature Pub Date : 2024-07-11 DOI: 10.1007/s00114-024-01918-4
Nicole Klein
{"title":"Diverse growth rates in Triassic archosaurs-insights from a small terrestrial Middle Triassic pseudosuchian.","authors":"Nicole Klein","doi":"10.1007/s00114-024-01918-4","DOIUrl":"https://doi.org/10.1007/s00114-024-01918-4","url":null,"abstract":"<p><p>The small pseudosuchian Benggwigwishingasuchus eremacarminis was found in Anisian (Middle Triassic) marine sediments. Neither the skeleton nor osteohistology or microanatomy shows any secondary aquatic adaptations, and a dominantly terrestrial lifestyle of this new taxon is evident. Bone tissue consists of a scaffold of parallel-fibered matrix, which is moderately vascularized by small, mainly longitudinal primary osteons. The innermost cortex is less densely vascularized and more highly organized. No parts of the cortex contain any woven bone. The cortex is regularly stratified by annual growth marks. Bone tissue and growth pattern indicate an adult individual that has had slow growth rates throughout its ontogeny. Tissue type, slow growth rate, and inferred low resting metabolic rate of Benggwigwishingasuchus are similar to that of crocodylomorphs but differ from that of Sillosuchus and Effigia, poposaurids to which Benggwigwishingasuchus is related based on phylogenetic analyses. However, according to current knowledge, growth rates in early archosaurs are more likely influenced by body size and environment than by phylogeny. Benggwigwishingasuchus is thus another example of unpredictable variability in growth rates within Triassic archosaurs.</p>","PeriodicalId":794,"journal":{"name":"The Science of Nature","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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