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[Construction of a 17 β-estradiol sensor based on a magnetic graphene oxide/aptamer separating material]

Se pu = Chinese journal of chromatography 2025年第1期43卷 87-95页

作者： Xin-Yu Jin Le-Yuan Chen Ya-Nna Liu Wen-Jing Xie Han-Yong Peng State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China. University of Chinese Academy of Sciences Beijing 100049 China. School of Environment Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 China.

17-Estradiol (E2) is a natural steroidal estrogen essential for a variety of physiological functions in organisms. However, external E2, which is renowned for its potent biological effects, is also considered to be an endocrine-disrupting compound (EDC) capable of disturbing the normal operation of the endocrine system, even at nanogram-per-liter (ng/L) concentrations. Studies have revealed that medical and livestock wastewater can be contaminated with E2, which poses potential risks to human health. Currently, the primary method for detecting E2 relies on liquid chromatography-mass spectrometry, which is limited with regard to on-site or large-scale sample testing due to instrumental constraints. Herein, we developed a magnetic graphene oxide (MGO)/aptamer separating material. The MGO was synthesized by creating a water-in-oil microemulsion at 90 ℃, an agarose hydrogel to load the FeO nanoparticles, and layered graphene oxide (GO). In contrast to conventional methods, such as chemical co-precipitation and solvothermal approaches, this method is more time-efficient and does not require high temperature or pressure. Moreover, the use of a physical encapsulation technique for enwrapping the FeO nanoparticles and layered GO eliminates the need for chemical modification. This approach reduces the use of harmful chemicals, ensures complete loading, and results in highly efficient encapsulation. The MGO was characterized using Fourier-transform infrared (FT-IR) spectroscopy and transmission electron microscopy (TEM), as well as dynamic light scattering (DLS) and Zeta potential analyses, which revealed that the FeO nanoparticles had been successfully loaded onto the GO to produce MGO particles mainly around 5 μm in size. Additionally, this study demonstrated that the aqueous MGO dispersion is highly stable. This substance was used to develop a fluorescent biosensor that uses a "turn-on" mechanism to rapidly and highly sensitively detect E2. MGO is capable of adsorbing a fl

关键词： 17-estradiol (E2) fluorescence biosensor magnetic graphene oxide (MGO) magnetic solid phase separation

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Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation

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Journal of environmental Sciences 2008年第1期20卷 62-67页

作者： XIAO Xiyuan CHEN Tongbin AN Zhizhuang LEI Mei HUANG Zechun LIAO Xiaoyong LIU Yingru center for environmental Remediation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China.

Field investigation and greenhouse experiments were conducted to study the tolerance of Pteris vittata L. （Chinese brake） to cadmium （Cd） and its feasibility for remediating sites co-contaminated with Cd and arsenic （As）. The results showed that P. vittata could survive in pot soils spiked with 80 mg/kg of Cd and tolerated as great as 301 mg/kg of total Cd and 26.8 mg/kg of diethyltriaminepenta acetic acid （DTPA）-extractable Cd under field conditions. The highest concentration of Cd in fronds was 186 mg/kg under a total soil concentration of 920 mg As/kg and 98.6 mg Cd/kg in the field, whereas just 2.6 mg/kg under greenhouse conditions. Ecotypes of P. vittata were differentiated in tolerance and accumulation of Cd, and some of them could not only tolerate high concentrations of soil Cd, but also accumulated high concentrations of Cd in their fronds. Arsenic uptake and transportation by P. vittata was not inhibited at lower levels （〈20 mg/kg） of Cd addition. Compared to the treatment without addition of Cd, the frond As concentration was increased by 103.8% at 20 mg Cd/kg, with the highest level of 6434 mg/kg. The results suggested that the Cd-tolerant ecotype of P. vittata extracted effectively As and Cd from the site co-contaminated with Cd and As, and might be used to remediate and revegetate this type of site.

关键词： arsenic (As) cadmium (Cd) Chinese brake (Pteris vittata L.) hyperaccumulator phytoremediation tolerance uptake

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Molecular analysis of long-term biofilm formation on PVC and cast iron surfaces in drinking water distribution system

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Journal of environmental Sciences 2014年第4期26卷 865-874页

作者： Ruyin Liu Junge Zhu Zhisheng Yu DevRaj Joshi Hongxun Zhang Wenfang Lin Min Yang College of environmental and resource Sciences University of Chinese Academy of Sciences Institute of Microbiology Chinese Academy of Sciences research center for Eco-environmental Sciences Chinese Academy of Sciences

To understand the impacts of different plumbing materials on long-term biofilm formation in water supply system, we analyzed microbial community compositions in the bulk water and biofilms on faucets with two different materials-polyvinyl chloride （PVC） and cast iron, which have been frequently used for more thanlO years. Pyrosequencing was employed to describe both bacterial and eukaryotic microbial compositions. Bacterial communities in the bulk water and biofilm samples were significantly different from each other. Specific bacterial populations colonized on the surface of different materials. Hyphomicrobia and corrosion associated bacteria, such as Acidithiobacillus spp., Aquabacterium spp., Limnobacter thiooxidans, and Thiocapsa spp., were the most dominant bacteria identified in the PVC and cast iron biofilms, respectively, suggesting that bacterial colonization on the material surfaces was selective. Mycobacteria and Legionella spp. were common potential pathogenic bacteria occurred in the biofilm samples, but their abundance was different in the two biofilm bacterial communities. In contrast, the biofilm samples showed more similar eukaryotic communities than the bulk water. Notably, potential pathogenic fungi, i.e., Aspergillus spp. and Candida parapsilosis, occurred in similar abundance in both biofilms. These results indicated that microbial community, especially bacterial composition was remarkably affected by the different pipe materials （PVC and cast iron）.

关键词： drinking waterbiofilm surface material pyrosequencing microbial community

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Changes of Cu, Zn, and Cd speciation in sewage sludge during composting

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Journal of environmental Sciences 2005年第6期17卷 957-961页

作者： GAO Ding ZHENG Guo-di CHEN Tong-bin LUO Wei GAO Wei ZHANG Yi-an LI Yan-xia center for environmental Remediation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

The potential toxicity risks from heavy metals depend on their chemical speciation. The four stages of the Tessier sequential extraction method were employed to investigate changes in heavy metal speciation （Cu, Zn, and Cd） of sewage sludge during forced aeration composting, and then to identify whether the composting process would reduce or enhance their toxicities. Throughout the composting process, the exchangeable, carbonate-bound, Fe-Mn oxide-bound, and organic matter-bound fractions of Cu were converted to the residual Cu fraction. The organic matter-bound Cu fraction greatly contributed to this transformation. Residual Zn fraction was transformed to the Fe-Mn oxide-bound and organic matter-bound fractions after composting. The residual Zn fraction was a major contributor to the organic matter-bound Zn fraction. The availability of Cu and Zn was reduced by composting such that the risk of heavy metal toxicity decreased with prolonged treatment times. Additionally, attention should be paid to the increased availability of Cd in sewage sludge after composting treatment.

关键词： composting distribution heavy metal sewage sludge speciation

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A toxicity-based method for evaluating safety of reclaimed water for environmental reuses

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Journal of environmental Sciences 2014年第10期26卷 1961-1969页

作者： Jianying Xu Chuntao Zhao Dongbin Wei Yuguo Du College of resource Environment and Tourism Capital Normal University State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of Sciences

A large quantity of toxic chemical pollutants possibly remains in reclaimed water due to the limited removal efficiency in traditional reclamation processes. It is not enough to guarantee the safety of reclaimed water using conventional water quality criteria. An integrated assessment method based on toxicity test is necessary to vividly depict the safety of reclaimed water for reuse. A toxicity test battery consisting of lethality, genotoxicity and endocrine disrupting effect was designed to screen the multiple biological effects of residual toxic chemicals in reclaimed water. The toxicity results of reclaimed water were converted into the equivalent concentrations of the corresponding positive reference substances（EQC）. Simultaneously, the predicted no-effect concentration（PNEC） of each positive reference substance was obtained by analyzing the species sensitivity distribution（SSD） of toxicity data. An index ＂toxicity score＂ was proposed and valued as 1, 2, 3, or 4 depending on the ratio of the corresponding EQC to PNEC. For vividly ranking the safety of reclaimed water, an integrated assessment index ＂toxicity rank＂ was proposed, which was classified into A, B, C, or D rank with A being the safest. The proposed method was proved to be effective in evaluating reclaimed water samples in case studies.

关键词： Toxicity Safety Water quality Reclaimed water

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Remote Sensing Monitoring of Surface Characteristics in the Badain Jaran, Tengger, and Ulan Buh Deserts of China

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Chinese Geographical Science 2019年第1期29卷 151-165页

作者： LIU Qingsheng LIU Gaohuan HUANG Chong LI He State Key Laboratory of resources and environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Jiangsu center for Collaborative Innovation in Geographical Information resource Development and Application

Deserts and sandy land in northern China are very susceptible to sandy desertification and are the main source of sand-dust storms of Asian dust. However, because of the complex factors involved, descriptions of the relationship between sandy desertification and surface characteristics in these regions are lacking. We monitored the surface characteristics and their changes in time using information about soil, vegetation, and landforms in the Badain Jaran Desert(BJD), Tengger Desert(TD), and Ulan Buh Desert(UBD) in the northern China. The monitoring was done using tasseled cap angle(TCA), disturbance index(DI), and topsoil grain size index(TGSI) from Moderate Resolution Imaging Spectroradiometer(MODIS) images combined with a decision tree classification. Results showed that the TD had higher topsoil fine sand content, and the ratio of non-vegetated to vegetated areas was similar with that in the UBD. Northeast-southwest coarse sand dunes with thin interdune(NECTI) dominated the BD, fine sand dunes(FSD) dominated the TD, and a combination of northeast-southwest coarse sand dunes with wide interdune(NECWI) and northwest-southeast coarse sand dunes with wide interdune(NWCWI) dominated the UBD. From 2000 to 2015, in the BJD the area of the NECTI, non-sand dune(Non) and potential sand sources(PSS) increased, whereas the area of the NECWI, FSD and NWCWI decreased, indicating a improve process in the BJD. In the TD, the area covered by Non increased, whereas the area covered by PSS, NECWI, NECTI, FSD, and NWCWI decreased from 2000 to 2015. The area covered by the various surface characteristic types fluctuated annually in the UBD from 2000 to 2015. Changes in surface characteristics reflect the combined effects of natural conditions and human activity. The findings of our study will assist scientists and policy makers in proposing different management techniques to combat sandy desertification for the different surface characteristics of these regions.

关键词： surface characteristics MODIS desert tasseled cap angle disturbance index topsoil grain size index

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A global view of regulatory ecosystem services:existed knowledge,trends,and research gaps

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Ecological Processes 2020年第1期9卷 461-474页

作者： Wondimagegn Mengist Teshome Soromessa Gudina Legese Feyisa Department of natural resource Management Debre Berhan UniversityDebre BerhanEthiopia center for environmental Science Addis Ababa UniversityAddis AbabaEthiopia

Ecosystem services(ES)are growing fields of *** helps to provide an inherent way to understand the synergy and trade-offs between human beings and their natural *** ecosystem services(RES)are significantly important to maintaining the world in which people can live,and control the negative effects of flood,disasters,and *** can also provide regulatory services like ecosystem protection,human safety,and the provision of other ***,emerging ES decision-making agendas focus on ES that is tangible and has a direct link with human ***,the attention given to RES is low due to its less tangible benefits and complexity to measure the *** and lack of attention from policymakers and scientific community may lead to unintended risks to human well-being and significant influences on the provision of other *** study describes the research trends on RES,knowledge generated,and the major *** concluded that though there is an exponential growth of scientific publications on ES,no adequate studies were found on ***,the existed studies varied in their size and types of RES indicators covered,habitats/ecosystems,and geographic extent *** was also a lack of connecting knowledge generated on the benefits of RES with the national policy of natural resource management,inconsistency of ES classification,and methodological ***,scientific communities are promoted to link RES studies with human ***,the researcher should give priority for the least studied ecosystems and its services,developing robust methodology,and proposing management options to enhance the regulatory services of ecosystems.

关键词： Ecosystem Ecosystem service indicators Less tangible benefits Regulatory ecosystem services research trend Undervalued services

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Effect of Isaria fumosoroseus on mortality and fecundity of Bemisia tabaci and Plutella xylostella

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Insect Science 2010年第2期17卷 140-148页

作者： Zhen Huang Shaukat Ali Shun-Xiang Ren Jian-Hui Wu Engineering research center of Biological Control Ministry of Education College of Natural Resource and Environment South ChinaAgricultural University Guangzhou China

Entomopathogenic fungi have been used recently for the management ofwhite- fly （Bemisia tabaci） and diamondback moth （Plutella xylostella）. In previous studies, lsaria fumosoroseus has shown some potential to control these insect pests. In this paper, the ef- fects of I. fitmosoroseus （strain PF0 l-N4） on the mortality, fecundity and other life table parameters were observed under laboratory conditions. As a first step, the susceptibility of second instars ofB. tabaci and P. xylostella was examined in dose-response experiments, which was followed by the studies on the effect of/. fumosoroseus on reproduction. Both B. tabaci and P. xylostella, were susceptible to I. fumosoroseus having median lethal con- centration values ofl.10 x 104 and 0.48 ~ 104 conidia/mL after 12 and 11 days treatment, respectively. The fungal infection significantly reduced the longevity and fecundity of B. tabaci. At 1 ~ 107 conidia/mL, a minimum average longevity of 9 days was observed as compared to 16.3 days for the control. Similar results were also observed in P. xylostella with an average longevity of 5.6 days as compared to 17.68 days in the control. In case of reproduction, the number of progeny produced by B. tabaci and P. xylostella decreased with an increase in conidial concentration, with the average values of 83.67 and 26.85, 10.92 and 225.51,112.08 and 31.02 eggs/female for control, 1 × 10^4 and 1 × 10^7 conidial/mL, respectively. There was a significant effect of L. fumosoroseus on intrinsic rate of natural increase.

关键词： words Bemisia tabaci lsaria fumosoroseus longevity mortality Plutella xylostella reproduction

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Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi * Zhichuan JXu Chun‑Hua Yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth resource researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

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How did the Tonga volcanic tsunami on January 15,2022,affect Chinese coasts?

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Science China Earth Sciences 2023年第5期66卷 1038-1046页

作者： Zongchen WANG Zhiguo XU Ye YUAN Huaiwei YANG Lining SUN Peitao WANG Tingting FAN National Marine environmental Forecasting center Ministry of Natural Resources(National Tsunami Warning CenterMinistry of Natural Resources)Beijing100081China Key Laboratory of Marine Hazards Forecasting National Marine Environmental Forecasting CenterMinistry of Natural ResourcesBeijing100081China

At 12:15 on January 15,2022(Beijing time),a massive eruption of the Hunga Tonga-Hunga Ha'apai volcano produced violent atmospheric fluctuations,which in turn generated a global tsunami through an abrupt air pressure shock upon the sea *** main components of tsunami waves,phase-locked waves and free gravity waves,were identified by significant differences in propagating speeds across the deep *** phase-locked wave propagated through the ocean basin synchronously with the atmospheric Lamb wave at an average speed of approximately 306 m/s,followed by the free gravity wave at a slower *** locked wave reached the coast of eastern Taiwan Island at about 20:00 on January 15,in coincidence with the Lamb wave ***,on the coast of Chinese mainland,tidal gauges did not record tsunami signals until at least 2 h after the Lamb wave *** analyses and numerical experiments both suggested that as a result of the incoming wave shoaling above the vast continental shelf of Chinese mainland,the locked wave was no longer trapped by the air pressure shock and gradually transformed into freely-propagating shallow water waves by slowing down its *** to the longlasting planetary atmospheric fluctuations circling the earth many times,the sea level oscillations continuously propagated onto the Chinese shelf,which resulted in the tsunami waves excited along the Chinese coasts for at least 36 *** maximum wave amplitude recorded on the coast of eastern Taiwan Island was 44 cm at Wushi,while on the coasts of eastern and southern Chinese mainland,the maximum amplitudes were 22 cm at Shipu and 13 cm at *** and wavelet analyses were performed to identify the major components of the tsunami waves on the Chinese *** results indicated that eastern Taiwan Island was impacted mainly by the waves with periods of approximately 10-40 *** mainland was hit by the evolved shallow water waves and subsequent free waves,with pe

关键词： Volcanic tsunami Atmospheric Lamb wave Phase-locked-wave Free gravity wave Shallow water wave

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