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SSRN 2023年

作者： Wang, Yaoyao Chen, Wanli Gu, Xueyuan Zhou, Dongmei State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Accurately applying engineering nanoparticles (NPs) in farmland stress management is important for sustainable agriculture and food safety. The protective effects of four engineered NPs (SiO2, CeO2, ZnO, and S) on pakchoi under arsenic (As) stress were investigated using pot experiments. The results showed that CeO2, SiO2, and S NPs resulted in biomass reduction, while ZnO NPs (100 and 500 mg kg-1) significantly increased shoot height. Although 500 mg kg-1 S NPs rapidly dissolved to release SO42-, reducing soil pH and pore water As content and further reducing shoot As content by 21.6%, the growth phenotype was inferior to that obtained with 100 mg kg-1 ZnO NPs, probably due to acid damage. The addition of 100 mg kg-1 ZnO NPs not only significantly reduced the total As content in pakchoi by 23.9% compared to the As-alone treatment but also enhanced plant antioxidative activity by increasing superoxide dismutase and peroxidase activities and decreasing malondialdehyde content. ZnO NPs in soil might inhibit As uptake by roots by increasing the dissolved organic carbon (DOC) in pore water. According to the DLVO theory, ZnO NPs were the most effective in preventing As in pore water from entering plant roots due to their smaller hydrated particle size. Redundancy analysis further confirmed that DOC and SO42- were the primary factors controlling plant As uptake under the ZnO NP and S NP treatments, respectively. Our findings provide fundamental information for the safe and sustainable application of NP-conjugated agrochemicals. © 2023, The Authors. All rights reserved.

关键词： Soils

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Alcohol consumption promotes arsenic absorption but reduces tissue arsenic accumulation in mice

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Eco-Environment & Health 2023年第3期2卷 107-116页

作者： Hongyu Wang Albert L.Juhasz Yaosheng Zhang Lizhu Zhang Lena Q.Ma Dongmei Zhou Hongbo Li State Key Laboratory of Pollution Control and Resource Reuse Jiangsu Key Laboratory of Vehicle Emissions ControlSchool of the EnvironmentNanjing UniversityNanjing 210023China Future Industries Institute University of South AustraliaMawson LakesSouth Australia 5095Australia Department of Nanxin Pharm Nanjing 210000China Institute of Soil and Water Resources and Environmental Science College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China

Alcohol consumption alters gut microflora and damages intestinal tight junction barriers,which may affect arsenic(As)oral *** this study,mice were exposed to arsenate in the diet(6μg/g)over a 3-week period and gavaged daily with Chinese liquor(0.05 or 0.10 mL per mouse per day).Following ingestion,78.0%and 72.9%of the total As intake was absorbed and excreted via urine when co-exposed with liquor at daily doses of 0.05 or 0.10 mL,significantly greater than when As was supplied alone(44.7%).Alcohol co-exposure significantly altered gut microbiota but did not significantly alter As biotransformation in the intestinal tract or *** lower relative mRNA expression was observed for genes encoding for tight junctions in the ileum of liquor co-exposed mice,contributing to greater As bioavailability attributable to enhanced As absorption via the intestinal paracellular ***,As concentration in the liver,kidney,and intestinal tissue of liquortreated mice was decreased by 24.4%-42.6%,27.5%-38.1%,and 28.1%-48.9%compared to control *** was likely due to greater renal glomerular filtration rate induced by alcohol,as suggested by significantly lower expression of genes encoding for renal tight *** addition,in mice gavaged daily with 0.05 mL liquor,the serum antidiuretic hormone level was significantly lower than control mice(2.83±0.59 vs.5.40±1.10 pg/mL),suggesting the diuretic function of alcohol consumption,which may facilitate As elimination via *** results highlight that alcohol consumption has a significant impact on the bioavailability and accumulation of As.

关键词： Arsenic speciation Alcohol consumption Oral bioavailability Tissue accumulation Tight junctions

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Trophic transfer of carbon-14 from algae to zebrafish leads to its blending in biomolecules and the dysregulation of metabolism via isotope effect

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National Science Review 2025年第1期 155-166页

作者： Shipeng Dong Renquan Deng Hang Zeng Pengfei Xue Sijie Lin Dongmei Zhou Liang Mao State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Chemistry and Biomedicine Innovation Center Nanjing University College of Environmental Science & Engineering State Key Laboratory of Pollution Control and Resource Reuse Tongji University

Carbon-14（C-14） has been a major contributor to the human radioactive exposure dose,as it is released into the environment from the nuclear industry in larger quantities compared to other *** most abundant nuclide enters the biosphere as organically bound C-14（OBC-14）,posing a potential threat to public ***,it remains unknown how this relatively low radiotoxic nuclide induces health risks via chemical effects,such as isotope *** establishing a trophic transfer model involving algae（Scenedesmus obliquus）,daphnia（Daphnia magna） and zebrafish（Danio rerio）,we demonstrate that rapid incorporation and transformation of inorganic C-14 by algae into OB C-14 facilitates the blending of C-14 into the biomolecules of *** find that internalized C-14 is persistently retained in the brain of zebrafish,affecting DNA methylation and causing alterations in *** isotope tracing metabolomics with C-14 exposure further reveals the involvement of C-14 in various critical metabolic pathways,including one-carbon metabolism and nucleotide *** thus characterize the kinetic isotope effects for12C/14C in the key reactions of these metabolic pathways through kinetic experiments and density functional theory computations,showing that the isotopic substitution of carbon in bio chemicals regulates metabolism by disrupting reaction ratios via isotope *** results suggest that inorganic C-14discharged by the nuclear industry can be biotransformed into OBC-14 to impact metabolism via isotope effects,providing new insights into understanding the health risk of C-14,which is traditionally considered as a low radiotoxic nuclide.

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Photodegradation of Hexafluoropropylene Oxide Trimer Acid under UV Irradiation

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Journal of Environmental Sciences 2020年第11期32卷 132-140页

作者： Chen Li Na Mi Zhanghao Chen Cheng Gu State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

As a novel alternative to traditional perfluoroalkyl substances(PFASs),including perfluorooctanoic acid(PFOA)and perfluorooctane sulfonate(PFOS),hexafluoroproplyene oxide trimer acid(HFPO-TA)has been detected worldwide in surface ***,recent researches have demonstrated that HFPO-TA has stronger bioaccumulation potential and higher hepatotoxicity than *** treat these contaminants *** and PFOS,some photochemical techniques by adding exogenous substances had been ***,there is still no report for the behavior of HFPO-TA itself under direct UV *** current study investigated the photo-transformation of HFPO-TA under UV irradiation in aqueous *** 72 hr photoreaction,75%degradation ratio and 25%defluorination ratio were achieved under ambient *** active species,i.e.,hydrated electrons and active hydrogen atoms,generated from water splitting played dominant roles in degradation of HFPO-TA,which was confirmed by different effects of reaction atmospheres and quenching experiments.A possible degradation pathway was proposed based on the products identification and theoretical *** general,HFPO-TA would be transformed into shorter-chain PFASs,including hexafluoropropylene oxide dimer acid(HFPODA),perfluoropropionic acid(PFA)and trifluoroacetate(TFA).This research provides basic information for HFPO-TA photodegradation process and is essential to develop novel remediation techniques for HFPO-TA and other alternatives with similar structures.

关键词： HFPO-TA Photo-reductive Hydrated electrons Active hydrogen atoms Degradation pathway

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Research on Cb-Ce Co-Doped Ti4o7 Electrocatalytic Oxidation of Tetracycline-Based Antibiotics

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SSRN 2023年

作者： Chen, Junxia He, Xinyi Lei, Chongtian Li, Weigang Yang, Zhenzhen Zhou, Qing State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Elemental doping is a promising way for enhancing the electrocatalytic activity of metal oxides. Herein, we fabricate Ti/ Ti4O7-CB-Ce anode materials by the modification means of CB and Ce co-doped Ti4O7, and this shift effectively improve the interfacial charge transfer rate of Ti4O7 and •OH yield in the electrocatalytic process. Remarkably, the Ti4O7-CB-Ce anode exhibits excellent efficiency of minocycline (MNC) wastewater treatment (100 % removal within 20 minutes) and its cycling stability is comparable to BDD electrode. Meanwhile, it’s discovered that Ti/ Ti4O7-CB-Ce anodes can effectively improve the biochemical properties of the non-biodegradable pharmaceutical wastewater (B/C values from 0.25 to 0.44) and significantly reduce the toxicity of the wastewater (luminescent bacteria inhibition rate from 100 % to 26.6 %). This work paves an effective strategy for designing superior metal oxides electrocatalysts. © 2023, The Authors. All rights reserved.

关键词： Anodes

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Unleashing the Power of Acetylacetone: Effective control of Harmful Cyanobacterial Blooms with Ecological Safety

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SSRN 2023年

作者： Peng, Peng Zhou, Lang Yilimulati, Mihebai Zhang, Shujuan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Harmful algal blooms resulting from eutrophication pose a severe threat to human health. Acetylacetone (AA) has emerged as a potential chemical for combatting cyanobacterial blooms, but its practical application remains limited. In this study, we conducted a 42-day evaluation of AA's effectiveness in controlling blooms in natural water, with a focus on the interplay between ecological community structure, organism functional traits, and water quality. At a concentration of 0.2 mM, AA effectively suppressed the growth of Cyanobacteriia, Bacteroidia, and Alphaproteobacteria, while promoting the abundance of Gammaproteobacteria and Actinobacteria. Notably, AA induced disruptions in two photosynthesis and two biosynthesis pathways, while simultaneously enriching eight xenobiotics biodegradation and metabolism pathways. This enrichment facilitated the reduction of organic pollutants and supported improved water quality. Importantly, AA treatment significantly decreased the abundance of two macrolide-related antibiotic resistance genes. Overall, our findings establish AA as an efficient and durable algicide with favorable ecological safety. Moreover, this work contributes to the development of effective strategies for maintaining and restoring the health and resilience of aquatic ecosystems impacted by harmful algal blooms. © 2023, The Authors. All rights reserved.

关键词： Water quality

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Self-powered temperature-changing system driven by wind energy

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Microsystems & Nanoengineering 2024年第5期10卷 171-180页

作者： Jiayu Li Boxun Liu Mingyang Li Yahui Li Wangyang Ding Guanlin Liu Jun Luo Nan Chen Lingyu Wan Wenjuan Wei Center on Nanoenergy Research Institute of Science and Technology for Carbon Peak&NeutralityGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures School of Physical Science&TechnologyGuangxi UniversityNanning 530004China Department of Chemistry and the Tsinghua Center for Frontier Polymer Research Tsinghua UniversityBeijing 100084PR China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jjao Tong UniversityShanghai 200240PR China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materialsand School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China

Research on outdoor,mobile,and self-powered temperature-control devices has always been highly *** devices can reduce energy consumption for cooling and heating,and they have broad market *** this basis,a rotary disc-shaped triboelectric nanogenerator(TENG)with a maximum open-circuit voltage of 6913 V,a maximum short-circuit current of 85μA,and a maximum transferred charge of 1.3μC was *** synthesized a ferroelectric ceramic composed of 0.15PbTiO_(3)-0.85PbSc_(o.5)Ta_(o.5)O_(3)(0.15PT-0.85PST),which exhibited excellent electrothermal effects at room *** quenching,the electrothermal effect(A Tmax)and energy harvesting properties of the device were 1.574 K and 0.542 J/cm3,***,for the frst time,we proposed a self-powered temperature quantification control system with a rotary disc-shaped *** device effectively harnessed wind and water energy,in addition to other types of *** system consisted of energy collecting cups,a rotating disc-shaped FEP-rabbit fur TENG,a circuit management module,and a ferroelectric ceramic chip *** the circuit management module,the system converted external wind energy into a high-voltage electric field at the two ends of the 0.15PT-0.85PST ceramic chip to fully stimulate the electrothermal *** a speed of 200 rpm,the temperature change in the insulated cup within 276 s was 0.49 K,and the volume of the insulated cup was 300 times greater than that of the 0.15PT-0.85PST ceramic *** with the results reported in previous work,the cooling and heating times were both reduced by 31%,and the temperature changes for both cooling and heating increased by 81%.Moreover,the heating and cooling temperatures of the device optimized on this basis were increased to 1.19K and 0.93 K,*** great improvement in the temperature variation performance confrmed the great potential of the device for *** research could serve as a reference for reduci

关键词： ceramic shaped ferroelectric

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Retrofitting low-performance units to abate sewer overflow pollution based on mathematical model and Sobol algorithm

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Journal of Hydrodynamics 2023年第4期35卷 770-781页

作者： Zhi-chao Zhao Xiao-min Huang Hai-long Yin Jun-bo Wen Xiao-wei Fu Changjiang Institute of Survey PlanningDesign and ResearchWuhan430010China Key Laboratory of Yangtze River Water Environment Ministry of EducationTongji UniversityShanghai200092China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai200092China Hubei Provincial Engineering Research Center for Comprehensive Water Environment Treatment in the Yangtze River Basin Wuhan430010China Key Laboratory of Urban Water Supply Water Saving and Water Environment Governance in the Yangtze River Delta of Ministry of Water ResourcesShanghai200092China

Optimal retrofit of low-performance units(LPUs)is promising to abate overflow pollutant mass loading of sewer systems during *** study presents a combination of mathematical model and Sobol algorithm to help identify LPUs of sewer systems and design retrofitting ***,the solution to minimize the overflow pollutant mass loading from sewers systems can be efficiently *** developed method was demonstrated at a catchment served by one wastewater treatment plant in the Chaohu City,Anhui Province of China,with five pumping stations and a total sewer length of 58.3 *** the catchment,there are three rivers and a small lake to receive overflows from the sewer *** them,one river that was mostly polluted was selected as the object of overflow pollution abatement during wet weather *** identifying the LPUs of the sewer system and developing retrofitting strategies using Sobol sequence,the mitigation of overflow pollution during wet weather period was *** show that the mass loading of chemical oxygen demand(COD)discharged into the target river could be reduced by 40.6%,by implementing optimal retrofit strategy of LPUs,i.e.,increasing the conveyance capacities of two pumping stations by 2.5–3.2 times and augmenting the diameters of 12 sewers by 1.25–1.29 *** further coordinate the abatement of overflow pollution and retrofit investment,Sobol sensitivity analysis was conducted to screen the dominant LPUs to update the optimal retrofit *** applying the updated strategy,the overflow COD mass loading per overflow event was close to that of non-updated strategy,while the retrofitting length of sewers was reduced by 40%.Therefore,on the basis of the presented method,decision-makers can flexibly develop retrofitting strategies of sewer system to abate overflow pollution during wet weathers in a cost-effective way.

关键词： Urban sewer system low-performance units Sobol sensitivity analysis sewer overflow optimal retrofit strategy

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Machine Learning Reveals key Adsorption Mechanisms for Oxyanions Based on Combination of Experimental and Published Literature Data

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Environmental science & technology 2025年第22期59卷 2025 May 28页

作者： Ling Yuan Han Zhang Hang Yu Rongming Xu Weiming Zhang Yanyang Zhang Ming Hua Lu Lv Bingcai Pan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210023 China. Research Center for Environmental Nanotechnology (ReCENT) Nanjing University Nanjing 210023 China.

The development of new adsorbents for water treatment often involves complex adsorption mechanisms, whose individual contributions are unclear, thereby limiting the understanding of adsorption driving forces, making it difficult to achieve precise design of adsorbents. Machine learning (ML) has been used to uncover the impacts of these mechanisms through feature engineering, but progress is limited by the data quality for training. Herein, we developed a universal ML strategy for precisely predicting the adsorption capacity of polymers for oxyanions and identifying the adsorption driving force based on the combination of experimental and published literature data. The adsorption mechanism was explored through classification of RDkit descriptors with different SHAP importance values, and electrostatic interaction was found to be the driving force in the oxyanion adsorption process, which was further verified by theoretical calculations, adsorption experiments, and effective targeted adsorbent design. In comparison, analysis relying on a separate literature data source led to decreased model performance, some biased conclusions, and invalid targeted adsorbent design. Overall, this study proposed a strategy for data set optimization as well as dominant mechanism identification, which could shed light on better treatment of oxyanions in wastewater.

关键词： Adsorption Data set quality Machine learning Oxyanions Polymers

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Peroxidase-like activity of widely-used commercial inorganic pigments induces oxidative stress and antibiotic degradation: Implications for health risks

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Science of the Total Environment 2025年 958卷 177979页

作者： He, Kexin Sun, Chenxi Yang, Shuxue Liu, Huiting Fu, Heyun Qu, Xiaolei State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu 210023 China School of Environmental and Chemical Engineering Shenyang Ligong University Liaoning 110159 China

Inorganic pigments, which often contain significant amounts of nanoparticles, are crucial chemicals for human life. They are produced in massive quantities and widely used in consumer products, food, and pharmaceuticals. Herein, we reported that a variety of commonly used commercial inorganic pigments possess peroxidase-like activity, catalyzing hydrogen peroxide (H2O2) decomposition into reactive oxygen species, primarily hydroxyl radical ([rad]OH) and superoxide radical anion (O2[rad]−). The catalytic activity of inorganic pigments exhibits saturation kinetics as described by the Michaelis-Menten model, with optimal pH and temperature conditions that can be found in the human body. The enzyme-mimicking activity is strongly correlated with the formation of [rad]OH (R2 = 0.98), indicating the radical-mediated reaction pathway. The peroxidase-like activity of inorganic pigments can induce significant oxidative stress at health-relevant H2O2 concentrations (3–30 μM), as demonstrated by the ascorbic acid assay. Additionally, the peroxidase-like activity of inorganic pigments is able to mediate the oxidation of tetracycline, with oxidation rate constants positively correlated with the pigments' peroxidase-like activity. The discovery of peroxidase-like activity of commercial inorganic pigments sheds light on the reported oxidative stress exerted by these pigments and has important implications for the health risk assessment of inorganic food and pharmaceutical colorants, as well as colored consumer products. © 2024 Elsevier B.V.

关键词： Aspartame

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