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| 1 | The role of sediment resuspension duration in releaseof PAHs显示文摘Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants. Due to their low water solubility and high hydrophobicity, PAHs are rapidly sorbed onto particles and subsequently deposit in sediments once introduced into aquatic environment. In such a way, sediments become a huge sink for PAHs. During sediment resuspension, the potential exists for PAHs to be released from sediments into water. Sediment resuspension plays an important role in the transportation and fate of PAHs in the aquatic environment. In this study, release behavior of PAHs on Yangtze River sediment during resuspension was investigated using a particle entrainment simulator (PES). The role of re- suspension duration on release of 16 PAHs was measured by resuspending sediment for 12 h at 0.2 and 0.5 N/m2, respectively. Results indicated that PAH concentrations in TSS increase over time with more increase of phenanthrene and 4-ring PAHs. Comparing with 0.2 N/m2 (30%), ∑PAHs concentra- tions in TSS demonstrated remarkable increase during 0.5 N/m2 resuspension (37%). Dissolved PAH concentrations increased throughout the duration with more increase of 2―3 ring PAHs (50%―88%). Dissolved PAH concentrations showed remarkable increase during 0.5 N/m2 resuspension (50%). Moreover, PAH concentrations in overlying water throughout the duration of resuspension were higher than toxic effects threshold values in drinking water developed by WHO, which may cause toxic effect on ecosystem. | FENG JingLan SHEN ZhenYao NIU JunFeng YANG ZhiFeng | 2008 | Chinese Science Bulletin2008，53，18： | 9 |
| 2 | Is urban development an urban river killer? A case study of Yongding Diversion Channel in Beijing, China显示文摘The high population and concrete environment alter urban areas by changing temperature, rainfall runoff, and water resource utilization activities. This study was conducted to investigate the water quality features of the Yongding Diversion Channel in Beijing, China, and its relationship with rainfall and urban development. Monthly water quality data were obtained from April to October of 2004 at monitoring sites of Sanjiadian, Gaojing, Luodaozhuang, and Yuyuangtan. The monthly water quality grades from 2007 to 2011 were also investigated and compared with those of other rivers. Dissolved oxygen and pH showed greater decreases after one or two moderate rainfall events than several light rainfall events. The potassium permanganate index(CODMn), ammonia nitrogen(NH3-N) and total phosphorus(TP) increased more after several light rainfall events than after one or two moderate or heavy rainfall events. Pollutant concentrations(CODMn, NH3-N, TP) in downstream regions showed greater changes than those in upstream areas after heavy rainfall events. Intense human activities around the channel greatly influenced the water quality of the channel in rainy season because of runoff pollution; however, heavy rainfall had a strong dilution effect on the pollutant concentrations in rivers. Overall, urban development has obviously deteriorated the water quality of the Yongding Diversion Channel as indicated by an increase in the water quality index from 3.22 in 2008 to 4.55 in2010. The Pearson correlation between monthly rainfall and water quality indices from 2007 to 2011ranged from 0.1286 to 0.6968, generally becoming weaker as rainfall and rainfall runoff became more random and extreme. | Xi Wang Junqi Li Yingxia Li Zhenyao Shen Xuan Wang Zhifeng Yang Inchio Lou | 2014 | Journal of Environmental Sciences2014，26，6： | 8 |
| 3 | The electron structure and photocatalytic activity of Ti(IV) doped Bi_2O_3显示文摘Density functional theory (DFT) plays a significant role in the development of visible light responsive photocatalysts.Based on the first-principles plane-wave ultrasoft pseudopotential (USPP) method,the crystal structures of α,β,γ,and δ-Bi2O3 were optimally calculated for the total density of states (TDOS) and the partial density of states (PDOS) of Bi,O atoms.The calculation for Ti(IV) doped Bi2O3 supercell was carried out.The effects of Ti(IV)-doping on the electron structures and light absorption properties of various Bi2O3 were analyzed.The results showed that Ti 3d orbital appeared in the forbidden band of Bi2O3 and hybridized with O 2p,Bi 6p orbitals.The narrowed band gap (Eg) and red-shift of light absorption edge are responsible for the enhanced photocatalytic activity of Bi2O3.The β-Bi2O3 and Ti-doped β-Bi2O3 were prepared by a hydrothermal synthesis method.The improvement of the photocatalytic activity of Bi2O3 has also been verified by the characteristics of the UV-vis diffuse reflection spectrum and the experimental evaluation of the photocatalytic degradation of crystal violet in aqueous solution. | YIN LiFeng NIU JunFeng SHEN ZhenYao SUN Ying | 2011 | Science China Chemistry2011，54，1： | 7 |
| 4 | An overview of research on agricultural non-point source pollution modelling in China显示文摘 | Zhenyao Shen Qian Liao Qian Hong Yongwei Gong | 2011 | Separation and Purification Technology2011，，： | 5 |
| 5 | Assessment of effects of best management practices on agricultural non-point source pollution in Xiangxi River watershed显示文摘 | Ruimin Liu Peipei Zhang Xiujuan Wang Yaxin Chen Zhenyao Shen | 2013 | Agricultural Water Management2013，，： | 3 |
| 6 | Development and test of the Export Coefficient Model in the Upper Reach of the Yangtze River显示文摘 | Xiaowen Ding Zhenyao Shen Qian Hong Zhifeng Yang Xing Wu Ruimin Liu | 2009 | Journal of Hydrology2009，，3： | 3 |
| 7 | Distribution and sources of polycyclic aromatic hydrocarbons in Wuhan section of the Yangtze River, China显示文摘 | Chenglian Feng Xinghui Xia Zhenyao Shen Zhui Zhou | 2007 | Environmental Monitoring and Assessment (-)2007，，1： | 2 |
| 8 | Integrated assessment and changes of ecological environment in the Daning River Watershed显示文摘Based on Remote Sensing(RS),Geographical Information Systems(GIS),and the Spatial Principal Compo-nent Analysis(SPCA)method,the integrated assessment and changes in the ecological environment of Daning River Watershed are studied in this paper.The watershed is located in the Three Gorge Area in China.The result of the integrated assessment showed that level 9 had the biggest proportion in the year 1990,which was about 40%.In the year 2000,however,there were no levels with a proportion significantly bigger than the others.By comparing the assessment results in 1990 and 2000,it is discovered that the ecological environ-ment in Daning River Watershed in 1990 was better than that in 2000. | LIU Ruimin SHEN Zhenyao | 2007 | Frontiers in Biology2007，2，4： | 2 |
| 9 | Release of polycyclic aromatic hydrocarbons from Yangtze River sediment cores during periods of simulated resuspension显示文摘 | Zhifeng Yang Jinglan Feng Junfeng Niu Zhenyao Shen | 2007 | Environmental Pollution2007，，2： | 2 |
| 10 | Temporal variation of heavy metal pollution in urban stormwater runoff显示文摘 | Wen LI Zhenyao SHEN Tian TIAN Ruimin LIU Jiali QIU | 2012 | Frontiers of Environmental Science & Engineering2012，6，5： | 2 |
| 11 | Distribution and sources of polycyclic aromatic hydrocarbons in Wuhan section of the Yangtze River, China 显示文摘 | FENG Chenglian XIA Xinghui SHEN Zhenyao | 2007 | Environmental Monitoring and Assessment2007，133，123： | 1 |
| 12 | Distribution and speciation of heavy metals in sediments from the mainstream,tributaries,andl akes of the Yangtze River catchment of Wuhan,China显示文摘 | Yang Zhifeng WangYing Shen Zhenyao | 2009 | Journal of Hazardous Materials2009，166，： | 1 |
| 13 | Sedimentary records of metal speciation in the Yangtze Estuary: Role of hydrological events显示文摘 | Chenghong Feng Shou Zhao Dongxin Wang Junfeng Niu Zhenyao Shen | 2014 | Chemosphere2014，，： | 1 |
| 14 | Analysis of parameter uncertainty in hydrological and sediment modeling using GLUE method :a case study of SWAT model applied to Three Reservoir Region, China 显示文摘 | Zhenyao Shen | 2012 | Hydrology and Earth System Sciences2012，16，： | 1 |
| 15 | Spatial and seasonal distribution of organochlorine pesticides in the sediments of the Yangtze Estuary显示文摘 | Yangyang Li Junfeng Niu Zhenyao Shen Chi Zhang Zhengzao Wang Tiande He | 2014 | Chemosphere2014，，： | 1 |
| 16 | An overview of research on agricultural non-point source pollution modelling in China显示文摘 | SHEN Zhenyao LIAO Qian HONG Qian | 2012 | Separation and Purification Technology2012，84，： | 1 |
| 17 | Electrochemical properties of the erbium-chitosan-fluorine-modified PbO2 electrode for the degradation of 2,4-dichlorophenol in aqueous solution显示文摘 | Wang Ying Shen Zhenyao Li Yang | | 0，，10： | 1 |
| 18 | Adsorption of phosphorus on sediments from the Three-Gorges Reservoir (China) and the relation with sediment compositions显示文摘 | Wang Ying Shen Zhenyao Niu Junfeng | 2009 | Journal of Hazardous Materials2009，162，1： | 1 |
| 19 | A comparison of WEPP and SWAT for modeling soil erosion of the Zhangjiachong watershed in the Three Gorges Reservoir area 显示文摘 | Shen Zhenyao Gong Yongwei Li Yanhong | 2009 | Agricultural Water Management2009，96，10： | 1 |
| 20 | Investigation of the interaction between As and Sb species and dissolved organic mat- ter in the Yangtze Estuary,China,using excitation-emission ma- trices with parallel factor analysis显示文摘 | Ying Wang Di Zhang Zhenyao Shen | 2015 | Environ Sci Pollut Res2015，，22： | 1 |
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