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Nano Zero-Valent Iron Enhances the Mobilization and Absorption of Chromium in Rice (Oryza Sativa L.): Implication for Cr Risks Management in Paddy Fields

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SSRN 2023年

作者： Liu, Ting Guan, Zeting Li, Jingjing Ao, Ming Sun, Shengsheng Deng, Tenghaobo Wang, Shizhong Tang, Yetao Lin, Qingqi Ni, Zhuobiao Qiu, Rongliang Guangdong Laboratory for Lingnan Modern Agriculture Guangdong Provincial Key Laboratory of Agricultural and Rural Pollution Abatement and Environmental Safety College of Natural Resources and Environment South China Agricultural University Guangzhou510642 China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation School of Environmental Science and Engineering Sun Yat-sen University Guangzhou510006 China Institute of Quality Standard and Monitoring Technology for Agro-products Guangdong Academy of Agricultural Sciences Guangzhou510640 China

Chromium (Cr) accumulating in soil caused serious pollution to cultivated land. At present, nano zero-valent iron (nZVI) is considered to be a promising remediation material for Cr-contaminated soil. However, the impact on the behavior of Cr in the soil-rice system under high natural geological background value remains unknown. We studied the effects of nZVI on the migration and transformation of Cr in paddy soil-rice by pot experiment. Three different doses of nZVI (0, 0.001% and 0.1% (w/w)) treatments and one dose of 0.1% (w/w) nZVI treatment without plant rice were set up. Under continuous flooding conditions, nZVI significantly increased rice biomass compared with the control. At the same time, nZVI significantly promoted the reduction of Fe in the soil, increased the concentration of dissolved Fe and bioavailable Cr, then facilitated the absorption of Cr in rice roots and the transportation to the aboveground part. In addition, the enrichment of Fe(III)-reducing bacteria and sulfate-reducing bacteria in soil provided electron donors for Cr oxidation, which helps to form bioavailable Cr that is easily absorbed by plants. There is an unexpected environmental risk associated with nZVI application to the high geological background contaminated paddy soil, and one should be aware this risk when applying nZVI aiming to minimize human Cr exposure health risks via rice consumption. © 2023, The Authors. All rights reserved.

关键词： Bacteria

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Construction of polydopamine nanomedicine for dual inhibition and degradation of histone deacetylases in cancer cells

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International Journal of Biological Macromolecules 2025年 313卷 144340页

作者： Ding, Xin Miao, Hu Duan, Chenwei Zhao, Shunchao Zhang, Jin Liu, Yi Xu, Juan Sun, Ming Hu, Yanjun Hubei Key Laboratory of Pollutant Analysis & Reuse Technology College of Chemistry and Chemical Engineering Hubei Normal University Huangshi435002 China Tongji Medical College Huazhong University of Science & Technology Wuhan430000 China Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education School of Public Health Guizhou Medical University Guiyang561113 China School of Chemistry and Material Sciences South-Central Mimzu University Wuhan430074 China Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province School of Chemistry and Chemical Engineering Wuhan University of Science and Technology Wuhan430081 China

Histone deacetylases (HDACs), key regulators of gene expression and promoters of tumor progression, have emerged as highly promising targets for anti-cancer therapy. However, current HDAC-targeting strategies are limited by challenges such as poor selectivity, drug resistance, and complex combination of therapy strategies. To address these issues, we have developed covalently modified polydopamine nanoparticles (PDA-SAHA NPs) incorporating octenylimide hydroxamic acid (SAHA), a broad-spectrum HDAC inhibitor. PDA-SAHA NPs can achieve the dual function of inhibition and degradation of HDACs in cancer cells. Under near-infrared light irradiation, PDA-SAHA NPs demonstrate excellent photothermal conversion efficiency, generating localized high temperatures in the tumor microenvironment that effectively induce the denaturation and degradation of HDAC proteins. Both in vivo and in vitro experiments indicate that PDA-SAHA NPs significantly inhibit the proliferation of cancer cells and enhance apoptotic effects, thereby effectively suppressing tumor growth. This dual mechanism, combining HDAC inhibition and photothermal-induced degradation, not only offers a novel strategy for overcoming the resistance associated with traditional HDAC inhibitors but also shows substantial potential in cancer treatment. © 2025 Elsevier B.V.

关键词： Cancer cells

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A New-Style Pohotoelectrochemical Sensing Device Based on Nh2-Uio-66@Bi2o3 for the Sensitive Detection of Hydrogen Sulfide

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SSRN 2024年

作者： Song, Zhiping Luo, Tingfang Ke, Jingru Hu, Shuisheng Yang, Weiqiang Ni, Jiancong Chen, Xiaoping Chen, Zhonghui Fujian Provincial Key Laboratory of Pollution Monitoring and Control Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology College of Chemistry Chemical Engineering and Environment Minnan Normal University Zhangzhou363000 China Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases Ministry of Education Key Laboratory for Tissue Engineering of Jiangxi Province Gannan Medical University Jiangxi Ganzhou341000 China Central Laboratory Affiliated Hospital of Putian University Putian University Putian351100 China

Hydrogen sulfide (H2S) has been regarded as an environmentally hazardous substance and its abnormal level in the atmosphere can cause great harm for human body. Therefore, the development of a rapid and sensitive method for H2S detection is valuable for both human health and ecosystem safety. Herein, a new-style photoelectrochemical (PEC) sensing device integrated with a headspace separation system for sensing H2S was constructed by assembling a NH2-UiO-66@Bi2O3 modified photoelectrode array which was prepared by a vacuum filtration technique. According to the experimental results, the H2S gas volatilized from the test sample induces partial in situ transformation of the NH2-UiO-66@Bi2O3 modified on photoelectrode array into NH2-UiO-66@Bi2S3 which promotes electron-holes separation and visible light absorption, thus leading to the enhancement of photocurrent response. Correspondingly, a signal-on PEC sensing device was thereby constructed for sensing H2S concentration linearly ranging from 2.5 to 100 µM, with a detection limit of about 0.78 µM. Beyond that, the feasibility of sensing H2S in environment samples was further confirmed by recovery assays. This work could broaden a new vision of the elegant design of portable PEC sensor for rapid and sensitive environmental analysis. © 2024, The Authors. All rights reserved.

关键词： Hydrogen sulfide

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2d Coordination Polymers Based on the Interaction between CucurbitUril and Light Lanthanide Metal Ions in the Presence of Copper Salts, and Use for the Detection of Nitrogenous Bases

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SSRN 2023年

作者： Chen, Kai Li, Jie Zhang, Ming-Hui Zhu, Zhao-Qiang Huang, Lin Redshaw, Carl Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China Chemistry School of Natural Sciences University of Hull HullHU6 7RX United Kingdom

The coordination of cucurbit[5]uril (Q[5]) with lanthanide cations (Ln3+), in the presence of Cu2+ cations, led to the formation of 2D-network coordination polymers, which have been investigated using single crystal X-ray diffraction. Experimental results revealed that crystals were only readily affordable for the systems involving the lighter lanthanide cations (La3+, Ce3+, Pr3+, Sm3+, Eu3+ and Tb3+), with all six Ln3+-Q[5] complexes (1 ~ 6) exhibiting similar coordination mode at the cucurbit[5]uril (Q[5]), and forming 2D-network coordination polymers with a 2D supramolecular assembly. One complex was found to detect Adenine (A) and Uracil (U) with high selectively. © 2023, The Authors. All rights reserved.

关键词： Copper

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Potential Applications of Cucurbit[n]urils and Their Derivatives in the Capture of Hazardous Chemicals

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CHEMISTRY-A EUROPEAN JOURNAL 2021年第16期27卷 5107-5119页

作者： Zhang, Xiu-Du Chen, Kai Sun, Wei-Yin Coordination Chemistry Institute State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing National Laboratory of Microstructures Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 P.R. China College of Chemistry and Materials Science Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-Based Materials Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University 189 Jiuhua Southern Road Wuhu 241002 P.R. China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing 210044 P.R. China

Cucurbit[n]urils (Q[n]s) are a relatively young family of macrocycles, consisting of glycoluril units bridged by methylene groups, and their unique structures have attracted extensive attention from chemists in recent decades. Due to the presence of a rigid hydrophobic inner cavity and two polar outer portals lined with carbonyl groups, Q[n]s not only encapsulate guest species into the cavity, but also coordinate with metal ions/clusters. Considerable achievements have been obtained in the fields of Q[n]s-based host-guest chemistry, coordination chemistry, as well as the combination of host-guest and coordination chemistry. Furthermore, the outer surface of Q[n]s has been demonstrated to be capable of interacting with definite species to generate supramolecular architectures in recent years. With more in-depth research into Q[n]s, their application studies have also emerged as a hot topic. This Minireview focuses on recent advances in the potential applications of solid-state materials based on Q[n]s and their derivatives for the capture and adsorption of hazardous chemicals from a solution or a gas mixture.

关键词： coordination complexes cucurbiturils host– guest systems hazardous chemicals outer-surface interactions

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Detection of SARS-CoV-2 and Its Mutated Variants Using RT-LAMP-CRISPR-Cas12a Platform

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Wuhan University Journal of Natural Sciences 2024年第5期29卷 453-460页

作者： WANG Shanshan YAN Jun DU Tongtong LIU Luo CHEN Xiong HAN Song YIN Jun PENG Biwen HE Xiaohua LU Xuan LIU Wanhong Hubei Province Key Laboratory of Allergy and Immunology Taikang Medical School(School of Basic Medical Sciences)Wuhan UniversityWuhan 430071HubeiChina Department of Laboratory Medicine Wuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430016HubeiChina Beijing Bioprocess Key Laboratory Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Environmental Pollution Monitoring and Disease Control(Guizhou Medical University) Ministry of EducationGuiyang 550025GuizhouChina

The global outbreak of coronavirus disease 19(COVID-19),caused by severe acute respiratory syndrome coronavirus 2(SARS-Co V-2),has raised significant global *** a rapid,efficient,sensitive,and accurate point-of-care detection method is imperative for curbing SARS-Co V-2 ***,we screened a sequence,designed a set of highly sensitive loopmediated isothermal amplification primers(LAMP)and g RNA,and developed a user-friendly detection platform combining CRISPRCas12a and RT-LAMP technology to specifically detect SARS-Co V-2 and its 5 *** analysis and Cas12a-g RNA identification ensured sequence specificity,allowing us to identify SARS-Co V-2 *** developed a method for the detection of SARSCoV-2 using these primers in combination with LAMP amplification and CRISPR-Cas12a *** method is designed to detect SARS-CoV-2(NC_045512),Alpha(B.1.1.7),Beta(B.1.351),Gamma(P.1),Delta(B.1.617.2)and Omicron(B.1.1.529).Additionally,it can differentiate SARS-CoV-2 from other *** analysis can be conducted by measuring fluorescence values,while qualitative analysis can be performed by observing fluorescence color point-of-care diagnosis changes with the naked *** results suggest that a set of novel sensitive LAMP primers and g RNA have been obtained to detect the extensive variants,and the RT-LAMPCRISPR-Cas12a platform significantly facilitates point-of-care diagnosis,thereby halting the spread of SARS-Co V-2,thus contributing to COVID-19 prevention and control.

关键词： SARS-CoV-2 mutation CRISPR RT-LAMP point-of-care diagnosis

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Optimization of Operating Parameters of Short-Cut Nitrification and Denitrification Process of Coal Pyrolysis Wastewater

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SSRN 2023年

作者： Huang, Weiliang Wan, Ning Shi, Jingxin Yujie, Tang Liu, Jingchun Hao, Hu Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China School of Applied Meteorology Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Harbin Institute of Technology China

Phenolic compounds and nitrogen in coal pyrolysis wastewater has become a limiting factor for industrial development, creating conflicts with the principles of sustainability and environmental protection. While denitrification technologies for municipal wastewater have been well-established, research on short-cut denitrification for coal pyrolysis wastewater remains relatively limited. By controlling operational parameters, the study aimed to investigate the effects of different pH levels, Dissolved Oxygen (DO), and external carbon sources on short-cut denitrification for coal pyrolysis wastewater. Under conditions of adequate alkalinity, changes in pH had no significant impact on Nitrogen Accumulation Ratio (NAR) and Total Nitrogen (TN) removal ratios. When DO concentrations were controlled within the range of 2.0 to 4.0 mg/L for 5 days, NAR gradually decreased, indicating that operating the reactor at lower DO concentrations was more conducive to maintaining higher NAR levels. When the COD ratio of methanol to crude phenol was 1:1 and 1:3, the denitrification ratios were 5.13 mg NO2--N/ (g vss∙h) and 3.94 mg NO2--N/ (g vss∙h), respectively. When only crude phenol was used as an external carbon source with a C/N ratio of approximately 4, TN removal efficiency reached 90.32%. However, the denitrification ratio decreased to 1.66 mg NO2--N/ (g vss∙h). The Gas Chromatography Mass Spectrometry (GC-MS) analysis results indicated that phenol was the primary electron donor in the denitrification process of the system. © 2023, The Authors. All rights reserved.

关键词： Phenols

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2D Coordination Polymers Based on the Interaction between CucurbitUril and Light Lanthanide Metal Ions in the Presence of Copper Salts, and Use for the Detection of Nitrogenous Bases

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SSRN 2023年

关键词： Copper

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Optimization and Application Of Pretreatment Method of Microplastics Detection in Municipal Solid Waste Landfills

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SSRN 2024年

作者： Zheng, Saqi Zhou, Baiyu Guo, Nanfei Li, Naying Wu, Jialun Cheng, Yong Han, Zhiyong State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu610059 China State Environmental Protection Key Laboratory of Synergetic Control Joint Remediation for Soil & Water Pollution Chengdu University of Technology Chengdu610059 China College of Ecology and Environment Chengdu University of Technology Chengdu610059 China YangJiang Nuclear Power Co. Ltd. Yangjiang529500 China Chengdu Ecological Environment Monitoring Center Station of Sichuan Province Chengdu610041 China

Landfills are one of the most important sources of microplastics (MPs). The pretreatment method is a precondition of microplastics study for the presence of complex substances in landfills. Therefore, it is essential to examine the impact of different pretreatment methods on the microplastics detection. A literature review and a comparison experiment on digestion solutions were performed to establish a comprehensive identification method for MPs in landfills. When exposed to of 30% H2O2, minimal mass reduction of PE, PP and PET were 4.00%, 3.00% and 3.00% respectively, and the least surface damage was observed in MPs, while exhibiting the most optimal peak value for infrared spectral characteristics. It is demonstrated that the effect of 30% H2O2 dissolution was superior compared to 10% KOH and 65% HNO3. The method was subsequently utilized to investigate the distribution of MPs in a landfill. The dominant MPs were polyethylene (PE, 18.56-23.91%), polyethylene terephthalate (PET, 8.80-18.66%), polystyrene (PS, 10.31-18.09%), and polypropylene (PP, 11.60-14.91%). The comprehensive identification method of "NaCl density separation + 30% H2O2 digestion + NaI density separation + sampling microscope + Mirco-FTIR" is suitable for MPs in landfills. © 2024, The Authors. All rights reserved.

关键词： Sodium chloride

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Temporal variation of PM_(2.5)-associated health effects in Shijiazhuang,Hebei

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Frontiers of Environmental Science & Engineering 2021年第5期15卷 75-83页

作者： Aifang Gao Junyi Wang Jianfei Luo Aiguo Li Kaiyu Chen Pengfei Wang Yiyi Wang Jingyi Li Jianlin Hu Hongliang Zhang School of Water Resources and Environment Hebei GEO UniversityShijiazhuang050031China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyNanjing University of Information Science&TechnologyNanjing210044China Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure Hebei Province Key Laboratory of Sustained Utilization and Development of Water ResourcesShijiazhuang050031China Department of Civil and Environmental Engineering Louisiana State UniversityBaton RougeLA70803USA Department of Environmental Science and Engineering Fudan UniversityShanghai200438China

Shijiazhuang is one of the cities in the North China *** recent decades,this city has experienced high levels of fine particulate matter(PM_(2.5)),which have potentially significant effects on human *** this study,the health effects of PM_(2.5)exposure in Shijiazhuang were estimated by applying an integrated exposure-response *** mortality,years of life lost(YLL),and the mortality benefits linked to reduced levels of PM_(2.5)were quantified for the period 2015–*** 2015,2016,and 2017,cerebrovascular diseases caused the highest premature mortality(2432,2449,and 2483,respectively),followed by ischemic heart diseases(1391,1479,and 1493,respectively),lung cancer(639,660,and 639,respectively),and chronic obstructive pulmonary diseases(533,519,and 473,respectively).Notably,the total number of premature deaths caused by PM_(2.5)exposure in Shijiazhuang in 2015,2016,and 2017 were 4994,5107,and 5088,***,the YLL in the same years were 47001,47880 and 47381,***,the YLL per 1000 females was lower than that per 1000 ***,we noted that premature mortality and YLL decreased by 84.2%and 84.6%when the PM_(2.5)levels diminished to 10µg/m^(3).Overall,the results of this study improve our understanding of how high PM_(2.5)concentrations affect human health and suggest the application of more stringent measures in Shijiazhuang to alleviate the associated health risks.

关键词： PM_(2.5) Health effects Integrated exposure-response model Shijiazhuang

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