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Chinese Chemical Letters 2019年第12期30卷 2241-2244页

作者： Ailing Zhu Yingying Guo Guangliang Liu Maoyong Song Yong Liang Yong Cai Yongguang Yin Institute of Environment and Health Jianghan UniversityWuhan 430056China State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Laboratory of environmental Nanotechnology and Health Effect Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Chemistry and Biochemistry Florida International UniversityMiamiFL 33199United States

Dark formation of hydroxyl radical upon oxidation of reduced iron minerals plays an important role in the degradation and transformation of organic and inorganic ***,we compared the hydroxyl radical formation from various reduced iron minerals at different redox conditions.·OH production was generally observed from the oxidation of reduced iron minerals,following the order:mackinawite(FeS)>reduced nontronite(iron-bearing smectite clay)> pyrite(FeS2)> side rite(FeCO3).Structural Fe^2+ and dissolved O2 play critical roles in ·OH production from reduced iron minerals.·OH production increases with decreasing pH,and Cl^-has little effect on this *** importantly,dissolved organic matter significantly enhances ·OH production,especially under O2 purging,highlighting the importance of this process in ambient *** sunlight-independent pathway in which ’OH forms during oxidation of reduced iron minerals is helpful for understanding the degradation and transformation of various inorganic and organic pollutants in the redox-fluctuation environments.

关键词： Reduced iron minerals Hydroxyl radical Dark oxidation Mackinawite Dissolved organic matter

Characteristics and environmental Significance of pH and EC in Summer Rainfall and Shallow Firn Profile at Yulong Snow Mountain,Lijiang City,China

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Journal of Earth Science 2010年第2期21卷 157-165页

作者：李宗省何元庆 Wilfred H Theakstone 贾文雄辛惠娟张蔚刘婧王淑新 State Key Laboratory of Cryospheric sciences Yulong Snow Mountain Glacial and Environmental Observation StationCold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences Graduate University of Chinese Academy of sciences Institute of Environment and Climate Change Research in Western China Lanzhou University School of Environment and Development University of Manchester Yulong Snow Mountain Glacial and environmental Observation Station Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

The seasonal and inter-annual variations of pH and EC （electrical conductivity） at Yulong （玉龙） Snow Mountain, Lijiang （丽江） City, are sensitive to precipitation variations and are important indicators of the atmospheric environment. The pH of summer rainfall at Lijiang City ranges from 6.7 to 7.4, and alkaline mineral salts dominate the variations of rainfall acidity, pH values in the shallow firn profile at Baishui （白水） Glacier No. 1 range from 5.6 to 6.3, and EC values from 2.4 to 7.3 μs/cm. The ranges are lower than those in other firn cores from China because of stronger elution and the influence of marine aerosols. This indicates that environmental records from a monsoonal temperate glacier differ from those at continental glaciers.

关键词： pH EC Baishui Glacier No. 1 Yulong Snow Mountain Lijiang City.

Carbon and Oxygen Isotopic Compositions: How Lacustrine environmental Factors Respond in Northwestern and Northeastern China

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Acta Geologica Sinica(English Edition) 2013年第5期87卷 1344-1354页

作者： ZHANG Chengjun FAN Rong LI Jun Steffen MISCHKE laise DEMBELE HU Xiaolan School of Earth sciences&Key Laboratory of Mineral Resources in Western China (Gansu Province) Lanzhou University College of Resource and environmental sciences Lanzhou University Institute of Earth and environmental Science University of Potsdam

Surface lake sediments, 28 from Hoh XU, 24 from northeastern China, 99 from Lake Bosten, 31 from Ulungur and 26 from Heihai were collected to determine δ13C and δ18O values. Considering the impact factors, conductivity, alkalinity, pH, TOC, C/N and carbonate-content in the sediments, CI, P, S, and metal element ratios of Mg/Ca, Sr/Ca, Fe/Mn of bulk sediments as environmental variables enable evaluation of their influences on δ13C and δ18O using principal component analysis （PCA） method. The closure and residence time of lakes can influence the correlation between δ13C and δ18O. Lake water will change from fresh to brackish with increasing reduction and eutrophication effects. Mg/Ca in the bulk sediment indicates the characteristic of residence time, Sr/Ca and Fe/Mn infer the salinity of lakes. Carbonate formation processes and types can influence the 6~3C--~1So correlation. ~180 will be heavier from Mg-calcite and aragonite formed in a high-salinity water body than calcite formed in freshwater conditions. When carbonate content is less than 30%, there is no relationship with either 613C or 6180, and also none between δ13C and δ18O. More than 30%, carbonate content, however, co-varies highly to δ13C and δ18O, and there is also a high correlation between δ13C and δ18O. Vegetation conditions and primary productivity of lakes can influence the characteristics of δ13C and δ18O, and their co-variance. Total organic matter content （TOC） in the sediments is higher with more terrestrial and submerged plants infilling. In northeastern and northwestern China, when organic matter in the lake sediments comes from endogenous floating organisms and algae, the δ13C value is high. δ13C is in the range of-4‰ to 0‰ when organic matter comes mainly from floating organisms （C/N〈6）; in the range of-4‰ to 8‰ when organic matter comes from diatoms （C/N=6 to 8）; and -8‰ to -4‰ when organic matter comes from aquatic and terrestrial plants （C/N〉8）.

关键词： Limnology isotopic analysis carbonates organic matter PCA Tibet Xinjiang,Northeastern China

Dithizone-functionalized C18 online solid-phase extraction-HPLC-ICP-MS for speciation of ultra-trace organic and inorganic mercury in cereals and environmental samples

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Journal of environmental sciences 2022年第5期34卷 403-410页

作者： Ying Wang Ailing Zhu Yingying Fang Changjun Fan Yanli Guo Zhiqiang Tan Yongguang Yin Yong Cai Guibin Jiang Laboratory of environmental Nanotechnology and Health Effect Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of sciences Beijing 100049China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China Shimadzu China Innovation Center Shimadzu(China)Co.LTDBeijing 100020China Department of Chemistry and Biochemistry Florida International UniversityMiamiFL 33199United States

A simple and efficient dithizone-functionalized solid-phase extraction(SPE)procedure,online coupled with high-performance liquid chromatography(HPLC)-inductively coupled plasma mass spectrometry,was developed for the first time for enrichment and determination of ultra-trace mercury(Hg)species(inorganic divalent Hg(Hg(Ⅱ)),methylmercury(CH_(3)Hg(Ⅱ))and ethylmercury(C_(2)H_(5)Hg(Ⅱ))in cereals and environmental *** the proposed method,functionalization of the commercial C_(18) column with dithizone,enrichment,and elution of the above Hg species can be completed online with the developed SPE device.A simple solution of 2-mercaptoethanol(1%(V/V))could be used as an eluent for both the SPE and HPLC separation of Hg species,significantly simplifying the method and *** online SPE method was optimized by varying dithizone dose,2-mercaptoethanol concentration,and sample *** addition,the effect of pH,coexisting interfering ions,and salt effect on the enrichment was also *** the optimized conditions,the detection limits of Hg species for 5 mL water sample were 0.15 ng/L for Hg(Ⅱ),0.07 ng/L for CH_(3)Hg(Ⅱ),and 0.04 ng/L for C_(2)H_(5)Hg(Ⅱ)with recoveries in the range of 85%-100%.The developed dithizone-functionalized C_(18) SPE column can be reused after a single function-alization,which significantly simplifies the enrichment ***,the stability of Hg species enriched on the SPE column demonstrated its suitability for field sampling of Hg species for later laboratory *** environment-friendly method offers a robust tool to detect ultra-trace Hg species in cereals and environmental samples.

关键词： Mercury speciation Online solid-phase extraction HPLC-ICP-MS Dithizone Cereals Natural water

Electrochemistry-stimulated environmental bioremediation:Development of applicable modular electrode and system scale-up

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environmental Science and Ecotechnology 2020年第3期3卷 32-40页

作者： Ai-Jie Wang Hong-Cheng Wang Hao-Yi Cheng Bin Liang Wen-Zong Liu Jing-Long Han Bo Zhang Shu-Sen Wang School of Civil&environmental Engineering Harbin Institute of Technology(Shenzhen)Shenzhen518055PR China Key Laboratory of environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085PR China

Bioelectrochemical systems(BESs)have been studied extensively during the past decades owing primarily to their versatility and potential in addressing the water-energy-resource *** stark contrast to the significant advancements that have been made in developing innovative processes for pollution control and bioresource/bioenergy recovery,minimal progress has been achieved in demonstrating the feasibility of BESs in scaled-up *** lack of scaled-up demonstration could be ascribed to the absence of suitable electrode modules(EMs)engineered for large-scale *** this study,we report a scalable composite-engineered EM(total volume of 1 m^(3)),fabricated using graphite-coated stainless steel and carbon felt,that allows integrating BESs into mainstream wastewater treatment *** cost-effectiveness and easy scalability of this EM provides a viable and clear path to facilitate the transition between the success of the lab studies and applications of BESs to solve multiple pressing environmental issues at full-scale.

关键词： environmental bioremediation Bio-electrochemical systems(BESs) Electrode modular Scaling-up Intergradation system

Genotypic and environmental Variations of Arabinoxylan Content and Endoxylanase Activity in Barley Grains

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Journal of Integrative Agriculture 2013年第8期12卷 1489-1494页

作者： ZHANG Xiao-qin XUE Da-wei WU Fei-bo ZHANG Guo-ping Agronomy Department Zhejiang University College of Life and environmental sciences Hangzhou Normal University

Arabinoxylan （AX） content in barley grains is an important quality determinant when barley is used as raw material of malt or beer production. The cultivar and environmental variations of total arabinoxylan （TAX）, water extractable arabinoxylan （WEAX） and endoxylanase activity （EA） were investigated using eight barley cultivars growing at seven locations with diverse environmental conditions. The results showed that both barley cultivar and location significantly affected the TAX, WEAX and EA levels, but the variations of TAX content and EA were mainly attributed to cultivar, while the impact of location on WEAX content was greater than that of cultivar. Correlation analysis indicated that TAX was significantly correlated to WUAX.

关键词： arabinoxylan barley (Hordeum vulgare L.) cultivar endoxylanase environment

Effects of environmental contaminants on fertility and reproductive health

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Journal of environmental sciences 2019年第3期31卷 210-217页

作者： Yanmin Ma Xin He Keyan Qi Tong Wang Yongchao Qi Lele Cui Fengbang Wang Maoyong Song Reproductive Center Beijing Obstetrics and Gynecology Hospital Capital Medical University Department of Clinical Laboratory Beijing Obstetrics and Gynecology Hospital Capital Medical University Key Laboratory of environmental Nanotechnology and Health Effects Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of sciences

Recent research indicates that the human infertility rate is increasing. Although various reasons have been hypothesized for the growing infertility rate, environmental contaminants are potentially important causal agents associated with this *** contaminants are widespread throughout our environment and human exposure is virtually unavoidable. The overall contribution of environmental exposure to infertility is unknown, but studies involving occupational exposure, together with results from animal experiments, suggest that environmental contaminants may adversely affect fertility. We reviewed the adverse effects of environmental exposure on fertility and related reproductive outcomes. environmental contaminants covered in this review include heavy metals, organic solvents, pesticides and endocrine disrupting chemicals. It is hoped that this review will highlight the need for further research in this area.

关键词： Infertility Reproductive health environmental contaminants Exposure Adverse effects

Optical Characteristics of Chromophoric Dissolved Organic Matter(CDOM)in Upstream and Downstream Lakes of Taihu Lake Basin:New Insights for Water environmental Management

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Chinese Geographical Science 2022年第4期32卷 606-619页

作者： REN Weixiang WU Xiaodong CHEN Bingfa CHAO Jianying GE Xuguang YANG Jiuyun YANG Hui College of Urban and environmental sciences Hubei Normal UniversityHuangshi 435002China Institute of Agricultural Re-sources and Environment Jiangsu Academy of Agricultural SciencesNanjing 210014China Nanjing Institute of environmental sciences Ministry of Ecology and EnvironmentNanjing 210042China

Chromophoric dissolved organic matter(CDOM)is a key component of organic matter that contributes to the ecological functioning of *** lakes in Taihu Lake Basin play an important role in maintaining regional ecological stabilities;however,the optical characteristics of the CDOM in the upstream and downstream lakes in this basin have not yet been systematically ***,the optical characteristics of CDOM in ten lakes of upstream and downstream of the Taihu Lake Basin were studied using UV-Visible and excitation-emission matrix *** different fluorophores consisting of two humic-like components(C1,C2)and one protein-like component(C3)were identified by parallel factor *** or surface erosion was responsible for the higher abund-ance of C1 in the upstream lakes,and increased biological activities accounted for the higher abundance of C3 in the downstream *** erosion in the wet season led to an increase in *** also found that the photodegradation and flocculation degree,which played a significant role in reducing CDOM,were higher in downstream lakes than in upstream *** analysis of CDOM provides a promising method for monitoring water qualities(e.g.,total phosphorus and potassium permanganate index)in each ***-ductions in soil or surface erosion in the upstream are needed to improve water quality.

关键词： Taihu Lake Basin chromophoric dissolved organic matter(CDOM) excitation-emission spectra parallel factor analysis(PARAFAC)

Accumulation of Pb,Cu,and Zn in native plants growing on contaminated sites and their potential accumulation capacity in Heqing,Yunnan

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Journal of environmental sciences 2008年第12期20卷 1469-1474页

作者： Sardar Khan Department of Soil environmental sciences Research Center for Eco-Environmental Sciences Department of environmental sciences University of Peshawar25120 Peshawar

Phytoremediation is one of the cost-effective and environmental friendly technologies used to remove contaminants from contaminated soils,which has been intensively studied during the last ***,few economical and effective remediation methods are available for the remediation of Pb contaminated *** study was conducted to assess the potential of 19 plants growing on contaminated sites in Pb mine *** and associated soil samples were collected and analyzed for total metal concentrati...

关键词： accumulation of Pb Cu and Zn cultivated crops accumulator lead mine remediation

Upward trend of nitrogen deposition curbed by the dual force of environmental regulation and social-economic structural change in China

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Science Bulletin 2019年第18期64卷 1300-1302页

作者： Lingli Liu State Key Laboratory of Vegetation and environmental Change Institute of Botany Chinese Academy of Sciences University of Chinese Academy of sciences

Nitrogen(N)is an important nutrient that is essential for all life on *** N accounts for 78%of the total atmospheric volume,it cannot be used by plants or animals unless it is converted to reactive nitrogen(Nr)such as ammonia(NH3)or related nitrogenous *** supply of reactive N has been the bottleneck in food production for *** 1913,the Haber-Bosch process has greatly improved the ability of humans to produce N fertilizers from atmospheric *** rapid growth of the world's population since 1960 is closely related to the increase in food production caused by the increased use of N fertilizers[1].Population growth further leads to increases in N-fixing crop cultivation,animal husbandry expansion,and fossil fuel con sumption.

关键词： husbandry trend ammonia