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9篇 您的检索式:作者名="Qingru WU"
    题名 作者 年代 出处 被引量
1A review of atmospheric mercury emissions, pollution and control in China显示文摘作为一种全球污染物质,水银在环境和人的健康上有重要影响。在中国的大气的水银排出物,污染和控制的当前的国家包括地在这份报纸被考察。与人为的水银排出物的大约 500800 t,中国贡献 25%40% 到全球水银排出物。在中国的主导的水银排放来源是煤燃烧,熔炼的非铁的金属,水泥生产和钢生产。从在中国的生来的来源的水银排出物等价于人为的水银排出物。在中国的大气的水银集中是乘诺思半球的背景水平的大约 210。在在中国的遥远的区域的水银免职流动通常在 1050 g 的范围吗?Shuxiao WANG Lei ZHANG Long WANG Qingru WU FengyangWANG Jiming HAO 2014Frontiers of Environmental Science & Engineering2014,8,5:20
2Mercury mass flow in iron and steel production process and its implications for mercury emission control显示文摘The iron and steel production process is one of the predominant anthropogenic sources of atmospheric mercury emissions worldwide. In this study, field tests were conducted to study mercury emission characteristics and mass flows at two iron and steel plants in China. It was found that low-sulfur flue gas from sintering machines could contribute up to41% of the total atmospheric mercury emissions, and desulfurization devices could remarkably help reduce the emissions. Coal gas burning accounted for 17%–49% of the total mercury emissions, and therefore the mercury control of coal gas burning, specifically for the power plant burning coal gas to generate electricity, was significantly important. The emissions from limestone and dolomite production and electric furnaces can contribute29.3% and 4.2% of the total mercury emissions from iron and steel production. More attention should be paid to mercury emissions from these two processes. Blast furnace dust accounted for 27%–36% of the total mercury output for the whole iron and steel production process. The recycling of blast furnace dust could greatly increase the atmospheric mercury emissions and should not be conducted. The mercury emission factors for the coke oven,sintering machine and blast furnace were 0.039–0.047 g Hg/ton steel, and for the electric furnace it was 0.021 g Hg/ton steel. The predominant emission species was oxidized mercury, accounting for 59%–73% of total mercury emissions to air.Fengyang Wang Shuxiao Wang Lei Zhang Hai Yang Wei Gao Qingru Wu Jiming Hao 2016Journal of Environmental Sciences2016,28,5:8
3Molecular diversity of arbuscular mycorrhizal fungi at a large-scale antimony mining area in southern China显示文摘Arbuscular mycorrhizal fungi(AMF) have great potential for assisting heavy metal hyperaccumulators in the remediation of contaminated soils. However, little information is available about the community composition of AMF under natural conditions in soils contaminated by antimony(Sb). The objective of this study was to investigate the characteristics of AMF molecular diversity, and to explore the effects of Sb content and soil properties on the AMF community structure in an Sb mining area. Four Sb mine spoils and one adjacent reference area were selected from around the Xikuangshan mine in southern China. The association of AMF molecular diversity and community composition with the rhizosphere soils of the dominant plant species was studied by Polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis(PCR-DGGE). Results from all five studied sites showed that the diversity of AMF decreased with increasing Sb concentration. Principal component analysis(PCA) indicated that the AMF community structure was markedly different among these groups. Further redundancy analysis(RDA) showed that Sb contamination was the dominating factor influencing the AMF community structure in the Sb mine area. However, the multivariate analysis showed that, apart from the soil Sb content, extractable nitrogen content and organic matter content also attributed to AMF sequence distribution type. Some AMF sequences were only found in the highly contaminated area and these might be ideal candidates for improving phytoremediation efficiency in Sb mining regions. Gene sequencing analysis revealed that most species were affiliated with Glomus, suggesting that Glomus was the dominant AMF genus in the studied Sb mining area.Yuan Wei Zhipeng Chen Fengchang Wu Hong Hou Jining Li Yuxian Shangguan Juan Zhang Fasheng Li Qingru Zeng 2015Journal of Environmental Sciences2015,27,3:6
4Mercury enrichment and its effects on atmospheric emissions in cement plants of China显示文摘Fengyang Wang Shuxiao Wang Lei Zhang Hai Yang Qingru Wu Jiming Hao 2014Atmospheric Environment2014,,:5
5Mercury flows in large-scale gold production and implications for Hg pollution control显示文摘Large-scale gold production(LSGP) is one of the five convention-related atmospheric mercury(Hg) emission sources in the Minamata Convention on Mercury. However, field experiments on Hg flows of the whole process of LSGP are limited. To identify the atmospheric Hg emission points and understand Hg emission characteristics of LSGP, Hg flows in two gold smelters were studied. Overall atmospheric Hg emissions accounted for 10%–17% of total Hg outputs and the Hg emission factors for all processes were 7.6–9.6 kg/ton. There were three dominant atmospheric Hg emission points in the studied gold smelters, including the exhaust gas of the roasting process, exhaust gas from the environmental fog collection stack and exhaust gas from the converter of the refining process. Atmospheric Hg emissions from the roasting process only accounted for 16%–29% of total emissions and the rest were emitted from the refining process. The overall Hg speciation profile(gaseous elemental Hg/gaseous oxidized Hg/particulate-bound Hg) for LSGP was 34.1/57.1/8.8. The dominant Hg output byproducts included waste acid, sulfuric acid and cyanide leaching residue. Total Hg outputs from these three byproducts were 80% in smelter A and 84% in smelter B. Our study indicated that previous atmospheric Hg emissions from large-scale gold production might have been overestimated.Hg emission control in LSGP is not especially urgent in China compared to other significant emission sources(e.g., cement plants). Instead, LSGP is a potential Hg release source due to the high Hg output proportions to acid and sludge.Qingru Wu Shuxiao Wang Mei Yang Haitao Su Guoliang Li Yi Tang Jiming Hao 2018Journal of Environmental Sciences2018,30,6:5
6Minamata Convention on Mercury: Chinese progress and perspectives显示文摘Mercury(Hg)is a global threat to human and environmental health[1].To address this global issue,the Minamata Convention on Mercury(MC)was agreed upon by 128 countries on 19January 2013.China officially ratified the MC in August 2016.As the largest emit-Yan Lin Shuxiao Wang Eirik Hovland Steindal Hua Zhang Huan Zhong Yindong Tong Zuguang Wang Hans Fredrik Veiteberg Braaten Qingru Wu ThorjФrn Larssen 2017National Science Review2017,4,5:3
7Transcriptome analysis reveals a potential regulatory mechanism of the lnc-5423.6/IGFBP5 axis in the early stages of mouse thymic involution显示文摘Age-related thymic involution is one of the significant reasons for induced immunity decline.Recent evidence has indicated that lncRNAs are widely involved in regulating organ development.However,the lncRNA expression profiles in mouse thymic involution have not been reported.In this study,we collect mouse thymus at the ages of 1 month,3 months,and 6 months for sequencing to observe the lncRNA and gene expression profiles in the early stages of thymic involution.Through bioinformatics analysis,a triple regulatory network of lncRNA-miRNA-mRNA that contains 29 lncRNAs,145 miRNAs and 12 mRNAs that may be related to thymic involution is identified.Among them,IGFBP5 can reduce the viability,inhibit proliferation and promote apoptosis of mouse medullary thymic epithelial cell line 1(MTEC1)cells through the p53 signaling pathway.In addition,miR-193b-3p can alleviate MTEC1 cell apoptosis by targeting IGFBP5.Notably,lnc-5423.6 can act as a molecular sponge of miR-193b-3p to regulate the expression of IGFBP5.In summary,lnc-5423.6 enhances the expression of IGFBP5 by adsorption of miR-193b-3p,thereby promoting MTEC1 cell apoptosis.Bingxin Li Yaqiong Ye Longsheng Hong Wanyan Li Qingru Wu Wenjun Liu Yongjiang Ma Danning Xu Yugu Li 2023Acta Biochimica et Biophysica Sinica2023,55,4:0
8Differentiated emission control strategy based on comprehensive evaluation of multi-media pollution:Case of mercury emission control显示文摘In order to comprehensively evaluate the environmental impact of multi-media mercury pollution under differentiated emission control strategies in China,a literature review and case studies were carried out.Increased human exposure to methylmercury was assessed through the dietary intake of residents in areas surrounding a typical coal-fired power plant and a zinc(Zn)smelter,located either on acid soil with paddy growth in southern China,or on alkaline soil with wheat growth in northern China.Combined with knowledge on speciated mercury in flue gas and the fate of mercury in the wastewater or solid waste of the typical emitters applying different air pollution control devices,a simplified model was developed by estimating the incremental daily intake of methylmercury from both local and global pollution.Results indicated that air pollution control for coal-fired power plants and Zn smelters can greatly reduce health risks from mercury pollution,mainly through a reduction in global methylmercury exposure,but could unfortunately induce local methylmercury exposure by transferring more mercury from flue gas to wastewater or solid waste,then contaminating surrounding soil,and thus increasing dietary intake via crops.Therefore,tightening air emission control is conducive to reducing the comprehensive health risk,while the environmental equity between local and global pollution control should be fully considered.Rice in the south tends to have higher bioconcentration factors than wheat in the north,implying the great importance of strengthening local pollution control in the south,especially for Zn smelters with higher contribution to local pollution.Dongwei Lv Qingru Wu Daiwei Ouyang Minneng Wen Gehui Zhang Shuxiao Wang Lei Duan 2023Journal of Environmental Sciences2023,,1:0
9Improved atmospheric mercury simulation using updated gas-particle partition and organic aerosol concentrations显示文摘The gaseous or particulate forms of divalent mercury(HgⅡ) significantly impact the spatial distribution of atmospheric mercury concentration and deposition flux(FLX). In the new nested-grid GEOS-Chem model, we try to modify the HgⅡ gas-particle partitioning relationship with synchronous and hourly observations at four sites in China. Observations of gaseous oxidized Hg(GOM), particulate-bound Hg(PBM), and PM 2.5 were used to derive an empirical gas-particle partitioning coefficient as a function of temperature( T) and organic aerosol(OA) concentrations under different relative humidity(RH). Results showed that with increasing RH, the dominant process of HgⅡ gas-particle partitioning changed from physical adsorption to chemical desorption. And the dominant factor of HgⅡ gas-particle partitioning changed from T to OA concentrations. We thus improved the simulated OA concentration field by introducing intermediate-volatility and semi-volatile organic compounds(I/SVOCs) emission inventory into the model framework and refining the volatile distributions of I/SVOCs according to new filed tests in the recent literatures. Finally, normalized mean biases(NMBs) of monthly gaseous element mercury(GEM), GOM, PBM, WFLX were reduced from-33%–29%, 95%–300%, 64%–261%, 117%–122% to-13%–0%,-20%–80%,-31%–50%,-17%–23%. The improved model explains 69%–98% of the observed atmospheric Hg decrease during 2013–2020 and can serve as a useful tool to evaluate the effectiveness of the Minamata Convention on Mercury.Kaiyun Liu Qingru Wu Shuxiao Wang Xing Chang Yi Tang Long Wang Tonghao Liu Lei Zhang Yu Zhao Qin’geng Wang Jinsheng Chen 2022Journal of Environmental Sciences2022,34,9:0
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