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Determination of Surface Area of Red Mud and Beringite Using Methylene Blue Method

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Pedosphere 2002年第2期12卷 189-192页

作者： ZHANG GANGYA, luo YONGMING and DENG XIHAIInstitute of soil science, the chinese academy of sciences, nanjing 210008 (China) bh.med.kyoto-u.ac.jp

The adsorption of methylene blue (MB) on three soil amendments,red mud from Hungary, rd mud from UK and beringite from Belgium, wasstudied to determine the surface areas of the amendments using a0.005 mol L^-1 NaCl solution and deionised water as backgroundsolutions. The surface areas determined by the methylene blue methodin the 0.005 mol L^-1 NaCl solution were 3.357, 2.340 and 5.576 m^2g^-1 for red mud (Hungary), red mud (UK) and beringite, respectively,slightly lower than those in the deionised water system.

关键词： beringite methylene blue red surface area

“Co-culture Engineering”for Enhanced Phytoremediation of Metal Contaminated soils

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Pedosphere 2004年第4期14卷 475-482页

作者： NICai-Ying SHIJi-Yan luoYong-Ming CHENYing-Xu DepartmentofEnvironmentalEngineering SchoolofEnvironmentandResourceSciencesZhejiangUniversityHangzhou310029（China）. soilandEnvironmentBioremediationResearchCentre InstituteofSoilScienceChineseAcademyofSciencesNanjing210008（China）

A co-culture of two plant materials, Astragalus sinicus L., a leguminous plant with concomitant nodules, and Elsholtzia splendens Naki-a Cu accumulator, along with treatments of a chelating agent (EDTA), root excretions (citric acid), and a control with E. splendens only were used to compare the mobility of heavy metals in chelating agents with a co-culture and to determine the potential for co-culture phytoremediation in heavy metal contaminated soils. The root uptake for Cu, Zn, and Pb in all treatments was significantly greater (P ＜ 0.05) than that of the control treatment. However with translocation in the shoots, only Cu, Zn, and Pb in plants grown with the EDTA treatment and Zn in plants cocropped with the A. sinicus treatment increased significantly (P ＜ 0.05). In addition, when a co-culture in soils with heavy and moderate contamination was compared, for roots in moderately contaminated soils only Zn concentration was significantly less (P ＜ 0.05) than that of heavily contaminated soils, however, Cu, Zn, and Pb concentrations of shoots were all significantly lower (P ＜ 0.05). Overall, this 'co-culture engineering' could be as effective as or even more effective than chelating agents, thereby preventing plant metal toxicity and metal leaching in soils as was usually observed in chelate-enhanced phytoremediation.

关键词： Astragalus sinicus chelating agents co-culture Elsholtzia splendens phytoremediation

A preliminary study on interaction of Hg and Se in Sedum alfredii Hance

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Acta Geochimica 2006年第S1期 127-128页

作者： Xuebin YIN, Chunxia YAO, De BI, Yongming luo, Jing SONG soil and Environment Bioremediation Research Center, nanjing Institute of soil science, chinese academy of sciences, nanjing 210008, China

Extractability of Cu in Alkaline Biosolids-Amended soilsas Influenced by γ-Irradiation

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Pedosphere 2002年第2期12卷 139-144页

作者： luoYONGMING P.CHRISTIE Instituteofsoilscience theChineseAcademyofSciencesNanjing210008（China） DepartmentofAgriculturalandEnvironmentalscience TheQueen′sUniversityofBelfasNewforgeLaneBelfastBT95PX（UK

An incubation experiment was conducted to investigate themicrobial biomass associated Cu in four contrasting soils to which analkaline stabilised sewage sludge cake was applied. The organisms ofsludge- amended and control soils were killed using γ-irradiationtechnique, and the aqueous and acid-extractable Cu concentrationswere determined. Addition of the sludge product increasedsignificantly the concentration of both the aqueous and diluteHOAc-extractable Cu in all the irradiated soils compared to thenon-sterilised sludge/soil mixtures, but the increase was morepronounced in the dilute acid-extractable Cu, indicating that the Curendered extractable in water and dilute acetic acid by γ-irradiation existed in the both soil liquid and solid phases. Theadditional increase in extractable Cu following the biocidaltreatment is likely to be due to release of Cu from the same fractionof soil microbial biomass.

关键词： acetic acid extract aqueous extract γ-irradication soil biomasscopper

Changes in soil Solution Cu and Zn Following Application of Alkaline Stab ilisedSewageSludgeand GammaIrradiation *1

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Pedosphere 1998年第2期8卷 134-142页

作者： YAN WEIDONG 1, luo YONGMING 2 and P. CHRISTIE 2 1 Institute of soil science, the chinese academy of sciences, P.O Box 821, nanjing 210008 (China) 2 Agricultural and Environmental science Department, the Queen’s University of Belfast, Ne

A glasshouse pot experiment was conducted to study changes in the solubility of copper and zinc in the soil plant system following heavy application of sewage sludge and partial sterilisation of the sludge/soil mixture. A slightly acid sandy loam was mixed with alkaline stabilised and composted urban sewage sludge solids (`Agri soil', 180 t hm -2 ), and the soil/sludge mixture was γ irradiated (10 kGy). The contrasts without the application of sewage sludge and γ irradiation were also included in the experiment. Perennial ryegrass (Lolium perenne cv. Magella) was grown on irradiated and unirradiated soils for 50 days. soil solution samples were obtained using soil suction samplers immediately before plant transplantation and every ten days thereafter. The soil solution samples were used directly for determination of Cu and Zn, together with pH, electrical conductivity (EC) and absorbance at wavelength 360 nm (A 360 ). Application of Agri soil led to a substantial increase in dissolved Cu and a significant decrease in dissolved Zn in the soil solution and these effects were accompanied by increased soil solution pH, EC and A 360 . The alkaline sludge product (Agri soil) in combination with γ irradiation also led to a pronounced elevation of Cu and A 360 but a marked decline in EC, indicating an increase in dissolved organic compounds and a decrease in the ionic strength of the soil solution. The dissolved Cu and Zn, EC and A 360 usually decreased while the pH increased after plant growth for 50 days.

关键词： copper γ irradiation sewage sludge soil solution zinc

铜污染土壤修复的有机调控研究 Ⅲ.EDTA和低分子量有机酸的效应

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土壤学报 2002年第5期39卷 679-685页

作者：吴龙华骆永明中国科学院南京土壤研究所南京210008

通过盆栽试验研究了EDTA和低分子量有机酸对土壤溶液性质、土壤铜形态变化和印度芥菜生长及铜吸收的影响。结果表明 ,施用pH6.3的EDTA溶液 ( 3mmolkg- 1 )显著地增加了土壤溶液铜 ,特别是难解离态铜的含量 ,其消长规律与土壤溶液TOC的... 详细信息

通过盆栽试验研究了EDTA和低分子量有机酸对土壤溶液性质、土壤铜形态变化和印度芥菜生长及铜吸收的影响。结果表明 ,施用pH6.3的EDTA溶液 ( 3mmolkg- 1 )显著地增加了土壤溶液铜 ,特别是难解离态铜的含量 ,其消长规律与土壤溶液TOC的变化相一致 ,也显著地增加土壤NH4NO3提取态和NH4OAc提取态铜量 ,但对芥菜生长没有显著影响。EDTA的加入显著地增加芥菜各组织铜浓度和铜吸收量 ,从而增加了芥菜的铜总吸收量 ,提高了植物修复效率。施用 3mmolkg- 1 pH6.3的草酸。

关键词：铜污染有机调控 EDTA 低分子量有机酸印度芥菜植物修复土壤污染重金属污染

重金属污染土壤的植物修复研究 Ⅲ.金属富集植物Brassica juncea对锌镉的吸收和积累

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土壤学报 2002年第5期39卷 664-670页

作者：蒋先军骆永明赵其国中国科学院南京土壤研究所南京210008

采用温室盆栽试验研究了印度芥菜对土壤中锌镉污染的忍耐、积累能力 ,以检验这种植物修复Zn、Cd污染土壤的可能性及其潜力。在加入Zn 5 0 0和 1 0 0 0mgkg- 1 的土壤中 ,印度芥菜生长 66天后 ,叶片中积累Zn的平均浓度分别达 2 80和 662m... 详细信息

采用温室盆栽试验研究了印度芥菜对土壤中锌镉污染的忍耐、积累能力 ,以检验这种植物修复Zn、Cd污染土壤的可能性及其潜力。在加入Zn 5 0 0和 1 0 0 0mgkg- 1 的土壤中 ,印度芥菜生长 66天后 ,叶片中积累Zn的平均浓度分别达 2 80和 662mgkg- 1 ,地上部带走的Zn分别为每盆 2 1 95和 341 2 μg。在加入Cd 2 0 0mgkg- 1 的土壤中生长的印度芥菜 ,叶片中积累Cd浓度为 1 61mgkg- 1 ,地上部带走的Cd为每盆 381 μg。和普通植物相比 ,印度芥菜更能将Zn和Cd从根运输到地上部。Zn 5 0 0mgkg- 1 处理的土壤在种植印度芥菜后其NH4NO3提取的Zn显著高于不种植物的处理 ;土壤添加Cd 2 0 0mgkg- 1 的处理NH4NO3提取的Cd也显著高于不种植物的处理 ,可能的原因是植物根分泌出特殊的分泌物 ,专一性地螯合溶解根系附近的难溶态Zn和Cd,从而提高土壤溶液中的浓度。印度芥菜对Zn、Cd有较强的忍耐和富集能力 ,是Zn、Cd污染土壤修复有潜力的植物。

关键词：重金属污染土壤植物修复金属富集植物 Brassica juncea 锌镉吸收积累印度芥菜

CH_4 uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia,China

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science China Earth sciences 2010年第7期53卷 977-983页

作者： GENG YuanBo1, luo GuangQiang1,2 & YUAN GuoFu1 1 Institute of Geographic sciences and Natural Resources Research, chinese academy of sciences, Beijing 100101, China 2 Graduate University of chinese academy of sciences, Beijing 100049, China Institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China

The influence of near ground atmosphere CH4 concentration, soil water content, soil Eh, plants, soil temperature, and pH on CH4 uptake flux of Leymus chinensis steppe during rapid growth season was studied using field in-situ measurement in Xilin River basin of Inner Mongolia, China. The results showed that CH4 uptake flux was positively correlated with near ground atmosphere CH4 concentration and soil Eh but negatively correlated with soil water content. Precipitation may decrease the CH4 flux by increasing the soil water content. The average fluxes of three treatments during the observation period were 1.52 (natural conditions, 1.51 (aboveground plants were excluded), and 2.00 mg m?2 d?1 (all plants were removed), respectively. The difference between the CH4 flux of natural condition treatment and that of removing aboveground plants treatment is small, whereas the flux of removing all plants treatment is larger than the other two treatments. This means that the contribution of aboveground plants to CH4 uptake flux is smaller than that of roots or roots-removing process. CH4 uptake flux is not sensitive to soil temperature and the narrow-ranged soil pH (6.36–7.86). The Leymus chinensis steppe acts as a sink for CH4, and thus more studies should be focused on its affecting factors and related mechanisms.

关键词： CH4 uptake flux Leymus chinensis steppe affecting factors static opaque chamber/gas chromatography method

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污泥中病原物的环境与健康风险及其削减途径

土壤 2005年第5期37卷 474-481页

作者：孙玉焕骆永明中国科学院南京土壤研究所土壤与环境生物修复研究中心土壤与环境联合开放研究实验室土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

污泥含有多种病原性生物体或病原物,主要包括细菌、病毒、原生动物和寄生虫。污泥中的病原物进入土壤后有再发的现象,存在环境与健康风险。对污泥的消化、碱性稳定、堆沤、辐射处理和巴氏灭菌,以及完善污泥土地堆放或土地施用的法律法... 详细信息

污泥含有多种病原性生物体或病原物,主要包括细菌、病毒、原生动物和寄生虫。污泥中的病原物进入土壤后有再发的现象,存在环境与健康风险。对污泥的消化、碱性稳定、堆沤、辐射处理和巴氏灭菌,以及完善污泥土地堆放或土地施用的法律法规等是削减污泥中病原物的环境和健康风险的主要措施。建议在我国尽快开展污泥和受其影响环境介质中病原物的环境行为、生态效应与健康风险研究,并发展相关的削减对策和关键技术。

关键词：污泥病原物风险削减途径