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| 1 | Characterization of humic acids extracted from the sediments of the various rivers and lakes in China显示文摘The humic acids (HAs) isolated from the sediments of the various rivers,lakes,and reservoirs in China were studied using elemental analyzer,fourier transform infrared (FT-IR),and CP/MAS 13C nuclear magnetic resonance (NMR) spectroscopy.The results showed that the HAs were characterized by some common chemical and physicochemical properties,but they also pose some differences in the C-containing functional groups.The C/N,C/H,O/C,and O/H ratios differ widely for the various HAs,showing that the elemental composition of the HAs from the various sediments was different due to the different environmental conditions.All HAs show similar spectra with different intense absorbance in the region of 4000-2000 cm-1,suggesting that they have very similar structures and functional groups.The absorbance region between 1900 and 400 cm-1 also showed similar spectra with different intense absorbance,different relative intensities,and some relevant differences for the various HAs.The total aromaticities for the six HAs varied from 23.1% to 41.8%.The differences in the elemental composition and functional groups for the various HAs were attributed to their different biogeochemical origins.The HAs in the sediments from Taihu Lake (one freshwater shallow lake with heavy eutrophication),the Pearl River (the tropical river),and the Liao River (located at the joint of the temperate zone and cold-temperate zone) showed different structural properties due to their different geographical and climate zones.These different properties for the six HAs were expected to affect the sorption,distributions,and fates of heavy metals and organic chemicals. | Mengchang HE Chunye LIN | 2008 | Journal of Environmental Sciences2008，20，11： | 35 |
| 2 | An electrodeposition approach to metal/metal oxide heterostructures for active hydrogen evolution catalysts in near-neutral electrolytes显示文摘Neutral water splitting is attractive for its use of non-corrosive and environmentally friendly electrolytes.However,catalyst development for hydrogen and oxygen evolution remains a challenge under neutral conditions.Here we report a simple electrodeposition and reductive annealing procedure to produce a highly active Ni-Co-Cr metal/metal oxide heterostructured catalyst directly on Ni foam.The resulting electrocatalyst for hydrogen evolution reaction (HER) requires only 198 mV of overpotential to reach 100 mNcm2 in 1 M potassium phosphate (pH =7.4) and can operate for at least two days without significant performance decay.Scanning transmission electron microscopy coupled with electron energy loss spectroscopy (STEM-EELS) imaging reveals a Ni-Co alloy core decorated with blended oxides layers of NiO,CoO and Cr2O3.The metal/metal oxide interfaces are suggested to be responsible for the high HER activity. | Michael J.Kenney Jianan Erick Huang Yong Zhu Yongtao Meng Mingquan Xu Guanzhou Zhu Wei-Hsuan Hung Yun Kuang Mengchang Lin Xiaoming Sun Wu Zhou Hongjie Dai | 2019 | Nano Research2019，12，6： | 4 |
| 3 | Biodegradation of polycyclic aromatic hydrocarbons in sediments from the Daliao River watershed, China显示文摘The Daliao River, as an important water system in Northeast China, was reported to be heavily polluted by polycyclic aromatic hydrocarbons (PAHs). Aerobic biodegradations of four selected PAHs (naphthalene, phenanthrene, uorene and anthracene) alone or in their mixture in river sediments from the Daliao River water systems were studied in microcosm systems. Eects of additional carbon source, inorganic nitrogen and phosphorus, temperature variation on PAHs degradation were also investigated. Results showed that the degradation of phenanthrene in water alone system was faster than that in water-sediment combined system. Degradation of phenanthrene in sediment was enhanced by adding yeast extract and ammonium, but retarded by adding sodium acetate and not significantly inuenced by adding phosphate. Although PAHs could also be biodegraded in sediment under low temperature (5°C), much lower degradation rate was observed. Sediments from the three main streams of the Daliao River water system (the Hun River, the Taizi River and the Daliao River) demonstrated dierent degradation capacities and patterns to four PAHs. Average removal rates (15 or 19 d) of naphthalene, phenanthrene, uorene and anthracene by sediment were in the range of 0.062-0.087, 0.005-0.066, 0.008- 0.016 and 0-0.059 mg/(L·d), respectively. As a result, naphthalene was most easily degraded compound, anthracene was the hardest one. In multiple PAHs systems, the interactions between PAHs inuenced each PAH biodegradation. | QUAN Xiangchun, TANG Qian, HE Mengchang, YANG Zhifeng, LIN Chunye, GUO Wei State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China. | 2009 | Journal of Environmental Sciences2009，21，7： | 2 |
| 4 | Phosphorus sorption and fraction characteristics in the upper,middle and low reach sediments of the Daliao River systems,China显示文摘 | Lin Chunye Wang Zhigang He Mengchang | 2009 | Journal of Hazardous Materials2009，170，1： | 1 |
| 5 | Heavy metal contamination in the sediment of the Second Songhua River显示文摘 | Chunye LIN Mengchang HE Baixing YAN Xiangchun QUAN Yuxiang ZHOU Wei GUO Zhifeng YANG | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 1 |
| 6 | Background, baseline, normalization, and contamination of heavy metals in the Liao River Watershed sediments of China显示文摘 | Jianbin Jiang Jing Wang Shaoqing Liu Chunye Lin Mengchang He Xitao Liu | 2013 | Journal of Asian Earth Sciences2013，，： | 1 |
| 7 | Content, enrichment, and regional geochemical baseline of antimony in the estuarine sediment of the Daliao river system in China显示文摘 | Chunye Lin Mengchang He Yanxia Li Shaoqing Liu | 2012 | Chemie der Erde - Geochemistry - Interdisciplinary Journal for Chemical Problems of the Geosciences and Geoecology2012，，： | 1 |
| 8 | Phosphorus sorption and fraction characteristics in the upper, middle and low reach sediments of the Daliao river systems, China 显示文摘 | Lin Chunye Wang Zhigang He Mengchang Li Yanxia Liu Ruimin Yang Zhifeng | 2009 | J Hazard Mater2009，170，1： | 1 |
| 9 | Phosphorus sorption and fraction characteristics in the upper, middle and low reach sediments of the Daliao river systems, China显示文摘 | Chunye Lin Zhigang Wang Mengchang He Yanxia Li Ruimin Liu Zhifeng Yang | 2009 | Journal of Hazardous Materials2009，，1： | 1 |
| 10 | Environmental im- pacts of heavy metals (Co, Cu, Pb, Zn) in surficial sediments of estuary in Daliao River and Yingkou Bay (Northeast Chi- na) : concentration level and chemical fraction 显示文摘 | WU Zhihao HE Mengchang LIN Chunye | 2012 | Environ- mental Earth Sciences2012，66，8： | 1 |
| 11 | Distribution and speciation of four heavy metals (Cd, Cr, Mn and Ni) in the surficial sediments from estuary in Daliao River and Yingkou Bay显示文摘 | WU Zhihao HE Mengchang LIN Chunye | 2011 | Environmental Earth Sciences2011，63，1： | 1 |
| 12 | Distribution of polycyclic aromatic hydrocarbons in water, suspended particulate matter and sediment from Daliao River watershed, China显示文摘 | Wei Guo Mengchang He Zhifeng Yang Chunye Lin Xiangchun Quan Haozheng Wang | 2006 | Chemosphere2006，，1： | 1 |
| 13 | Distribution and sources of organochlorine pesticides in water and sediments from Daliao River estuary of Liaodong Bay, Bohai Sea (China)显示文摘 | Li Tan Mengchang He Bin Men Chunye Lin | 2009 | Estuarine, Coastal and Shelf Science2009，，1： | 1 |
| 14 | Large-Scale Forward Genetic Screening Analysis of Development of Hematopoiesis in Zebrafish显示文摘Zebrafish 是为造血作用的调查的一个有力的模型。以便与造血的缺点孤立新奇异种, zebrafish 屏蔽的大规模 mutagenesis 被执行。由获得特定的造血的标记, 52 异种基于特定的 phenotypic 特点被鉴别然后分类类型进四。每异种代表了调整造血作用的相关方面的基因的一个通常认为的变化,包括早巨噬细胞开发,早 granulopoiesis,胚胎的 myelopoiesis,和权威的红血球生成 / 淋巴细胞增殖。我们的方法应该为在 zebrafish 的基因屏蔽的另外的类型是适用的。另外,我们识别了的异种的进一步的学习可以帮助揭开造血作用的分子的基础。 | Kun Wang Zhibin Huang Lingfeng Zhao Wei Liu Xiaohui Chen Ping Meng Qing Lin Yali Chi Mengchang Xu Ning Ma Yiyue Zhang Wenqing Zhang | 2012 | Journal of Genetics and Genomics2012，39，9： | 1 |
| 15 | Distribution and contamination assessment of heavy metals in sediment of the Second Songhua River, China显示文摘 | Chunye Lin Mengchang He Yuxiang Zhou Wei Guo Zhifeng Yang | 2008 | Environmental Monitoring and Assessment (-)2008，，1： | 1 |
| 16 | Aliphatic and polycyclic aromatic hydrocarbons in the Xihe River, an urban river in China’s Shenyang City: Distribution and risk assessment显示文摘 | Wei Guo Mengchang He Zhifeng Yang Chunye Lin Xiangchun Quan | 2010 | Journal of Hazardous Materials2010，，2： | 1 |
| 17 | Response of soil microbial activities and ammonia oxidation potential to environmental factors in a typical antimony mining area显示文摘Mining,smelting and tailing deposition activities can cause metal(loid)contamination in surrounding soils,threatening ecosystems and human health.Microbial indicators are sensitive to environmental factors and have a crucial role in soil ecological risk assessment.Xikuangshan,the largest active antimony(Sb)mine in the world,was taken as the research area.The soil properties,metal(loid)contents and microbial characteristics were investigated and their internal response relationships were explored by multivariate statistical analysis.The assessment of the single pollution index and Nemerow synthetic pollution index(PN)showed that the soils were mainly polluted by Sb,followed by Cd and As,in which sampling site S1 had a slight metal(loid)pollution and the other sampling sites suffered from severe synthetic metal(loid)pollution.The microbial characteristics were dissimilar among sampling points at different locations from the mining area according to hierarchical cluster analysis.The correlation analysis indicated that fluorescein diacetate hydrolase,acid phosphatase,soil basal respiration andmicrobial biomass carbonwere negatively correlatedwith PN,indicating their sensitivity to combined metal(loid)contamination;that dehydrogenase was positively correlated with pH;and that urease,potential ammonia oxidation and abundance of ammonia-oxidizing bacteria and archaea were correlated with N(nitrogen)contents.However,β-glucosidase activity had no significant correlations with physicochemical properties and metal(loid)contents.Principal components analysis suggested bioavailable Sb and pH were the dominant factors of soil environment in Xikuangshan Sb mining area.Our results can provide a theoretical basis for ecological risk assessment of contaminated soil. | Aihua Wang Shujun Liu Jun Xie Wei Ouyang Mengchang He Chunye Lin Xitao Liu | 2023 | Journal of Environmental Sciences2023，，5： | 0 |
| 18 | Phenanthrene sorption to environmental black carbon in sediments from the Song-Liao watershed(China)显示文摘Black carbon(BC)in ten contaminated sediments from the Song-Liao watershed,NE China,was isolated upon treatments using a combustion method at 375℃,and the isolates’sorption isotherms for phenanthrene(Phen)were determined.All sorption isotherms were nonlinear and fitted well by the Freundlich model.A negative relation was found between Freundlich sorption nonlinearity parameter(n values)and BC/total organic carbon(TOC)content of the original sediments(r^(2)=0.687,p<0.01),indicating the dominance of BC in Phen sorption nonlinearity.The BC isolates from this industrialized region had n values of 0.342 to 0.505 and logKFOC values of 6.02 to 6.42(μg·kg^(–1)·OC^(–1))/(μg·L^(–1))n for Phen.At a given Ce,the BC had higher Koc value than the original sediments,revealing a higher sorption capacity for BC.BC was responsible for 50.0%to 87.3%of the total sorption at Ce=0.05 Sw,clearly indicating the dominance of BC particles in overall sorption of Phen by sediments. | Jinghuan ZHANG Mengchang HE Chunye LIN Ke SUN Bin MEN John L.ZHOU | 2009 | Frontiers of Environmental Science & Engineering2009，3，4： | 0 |
| 19 | Comparison of antimony and arsenic behaviour at the river-lake junction in the middle of the Yangtze River Basin显示文摘As typical metalloid toxic elements widely distributed in environmental media,the geochemical behaviour of antimony(Sb)and arsenic(As)affects environmental safety.We selected the surface waters and sediments at the river-lake junction of Dongting Lake as the research objects,analysed the concentration and chemical partitioning of Sb and As,assessed its contamination and ecological risk levels,and discussed its sources and potential influencing factors.The concentrations of dissolved Sb and As in surface waters were low(<5.46μg/L),and the concentrations of Sb and As in surface sediments were 2.49-22.65mg/kg and 11.10-136.34 mg/kg,respectively.Antimony and As in sediments were mainly enriched in the fraction of residues,but the proportion of As in bioavailability was significantly higher than that of Sb.Although the contamination level of Sb was higher than that of As,the risk assessment code(RAC)showed that the ecological risk level of As was higher than that of Sb.Rainwater erosion and mining activities(in the midstream of Zijiang River)were the main contaminated sources of Sb,while As was affect mainly by rainwater erosion.The contamination and ecological risk of Sb in the inlet of the Zijiang River should receive considerable attention,while those of As in the inlet of the Xiangjiang River should also be seriously considered.This study highlights the need for multi-index-based assessments of contamination and ecological risk and the importance of further studies on the environmental behaviour of metalloids in specific hydrological conditions,such as river-lake junctions. | Huiji Liu Wei Zeng Ziyang Lai Mengchang He Chunye Lin Wei Ouyang Xitao Liu | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
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