检索结果-南通市图书馆

Journal of environmental sciences 1995年第1期7卷 52-59页

作者： Jiang Ke Chen Yudong Li Lingjun(Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china)

ＰＣＤＤ／Ｆｓｉｎｓｏｄｉｕｍｐｅｎｔａｃｈｌｏｒｏｐｈｅｎａｔｅ（Ｎａ－ＰＣＰ）ａｎｄｈｕｍａｎｂｌｏｏｄ，ｍｉｌｋａｎｄｓｅｄｉｍｅｎｔｓａｍｐｌｅｓｆｒｏｍＣｈｉｎｅｓｅｓｃｈｉｓｔｏｓｏｍｉａｓｉｓａｒｅａｓ... 详细信息

ＰＣＤＤ／Ｆｓｉｎｓｏｄｉｕｍｐｅｎｔａｃｈｌｏｒｏｐｈｅｎａｔｅ（Ｎａ－ＰＣＰ）ａｎｄｈｕｍａｎｂｌｏｏｄ，ｍｉｌｋａｎｄｓｅｄｉｍｅｎｔｓａｍｐｌｅｓｆｒｏｍＣｈｉｎｅｓｅｓｃｈｉｓｔｏｓｏｍｉａｓｉｓａｒｅａｓＪｉａｎｇＫｅ；ＣｈｅｎＹｕｄｏｎ...

关键词： sodium pentacuorophenate PCDD/Fs molluscacde.

ecological niche suitability model with an application in Taojiang land use planning

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 1994年第4期6卷 449-456页

作者： Ouyang Zhiyun Weisman Jason wang rusong(Research center for eco-environmental sciences, chinese Academy of sciences , beijing 100085, china) Fu Guinan (Taojiang County Land Bureau, hunan Province, china)

ecological suitability analysis is an important step in ecological planning. It applies the basis toestablish a sound development planning. In this paper, by applying multi-dimension niche concept, an eco-logical niche suitability (ENS) model was developed. The ENS model, combined with geographical informa-tion system (GIS) and spatial simulation, was used to analyze regional resources and environmental features ,and identify the suitability of regional resource and environment to regional development. An application ofthe ENS model in Taojiang agricultural land use planning is presented.

关键词： ecological suitability land use planning GIS.

Determination of polychlorinated biphenyl congeners in environmental samples

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 1996年第1期8卷 57-65页

作者： Chu Shaogang Yang Chun Xu Xiaobai (Research center for eco-environmental sciences,chinese Academy of sciences, beijing 100085.china )

A modified separation method has been developed for determinating polychlorinated biphenyl congeners in environmental samples. Direct treatment of extract with concentrated HzSO4 was employed in the first step for removal of lipids and other interfering substances, then a joint column of alumina-silica gel(Ag+) was applied to separate PCBs fraction from HCH, DDT and its analogs. After this separation, the PCBs fraction was analyzed by capillary gas chromatography with ECD detector and confirmed by GC/MS. The recoveries of individual congeners in Aroclor 1254 through the separation are about 79%-84%. The method is very efficient and useful for determination of trace amount of PCB congeners in environmental samples.

关键词： polychlorinated biphenyl capillary gas chromatography environmental samples.

Construction of WCB-11:A novel phiYFP arsenic-resistant whole-cell biosensor

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 2010年第9期22卷 1469-1474页

作者： Qing hu ,Li Li,Yanjuan wang,Wenjuan Zhao,Hongyan Qi,Guoqiang Zhuang Department of environmental Bio-Technology,Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china. [a] Department of environmental Bio-Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

The prediction and assessment of environmental pollution by arsenic are important preconditions of advocating environmental protection and human health risk assessment. A yellow fluorescent protein-based whole-cell biosensor for the detection of arsenite and arsenate was constructed and tested. An arsenic-resistant promoter and the regulatory gene arsR were obtained by PCR from the genome ofEscherichia coli DH5ct, andphiYFP was introduced into E. coli DH5ct as a reporter gene to construct an arsenic-resistant whole-cell biosensor （WCB-11） in which phiYFP was expressed well for the first time. Experimental results demonstrated that the biosensor has a good response to arsenic and the expression ofphiYFP. When strain WCB-11 was exposed to As^3＋ and As^5＋, the expression of yellow fluorescence was time-dependent and dose-dependent. This engineered construct is expected to become established as an inexpensive and convenient method for the detection of arsenic in the field.

关键词： arsenic reporter gene whole-cell biosensor yellow fluorescent protein (phiYFP)

Treatment of black liquor from the papermaking industry by acidification and reuse

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 2003年第5期15卷 697-700页

作者： YANG Wen bo, MU huan zhen, huANG Yan chu (Research center for eco environmental sciences, chinese Academy of sciences, beijing 100085, china. Research center for eco-environmental sciences Chinese Academy of Sciences Beijing 100085 Chin

Two different kinds of black liquor from the papermaking industry were treated by acidification and reuse. The experimental parameters and conditions were discussed in detail. The experimental results indicated that the treatment process mentioned in this article is an effective process for the treatment of black liquor from the papermaking industry. By the treatment, the solid materials in black liquor are transferred into two by products and the other components are reused or evaporated. Thus, no wastewater except some condensation water would be discharged in pulping process and the problem of pollution of black liquor would be effectively solved.

关键词： black liquor acidification reuse lignin water reducing agent

Adsorption　characteristics　of　copper　in　rivers　contaminated　by　acid　mine　drainage　from　copper　mine

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 1996年第1期8卷 28-37页

作者： Luan Zhaokun Chen Ming Tang Hongxiao(Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china)

In this paper, the partitioning of copper between surfacial sediments and overlaying water in Dawu-Le An River, which was contaminated by acid mine drainage resulted from mining activities,was studied by field investigation and acid dissolution *** adsorption experiments were carried out to study the adsorption of copper on amorphous iron oxyhydroxide and ore tailing *** results showed that it was the binding of copper onto the surface of amorphous Fe/Al oxyhydroxides and ore tailing particles that regulated the concentrations of dissolved Cu at downstream of Dawu River and its inlet into Le An River.A significant part of adsorbed copper was likely to be associated with amorphous Fe/Al oxyhydroxides coated on the surface of ore tailing particles. A simplified surface complexation model can be used to describe the adsorption behavior in the river.

关键词： copper mine adsorption behavior natural waters.

eco-environmental susceptibility in Shangyi County,Northern Hebei Province,china

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 1997年第1期9卷 86-94页

作者： Liu Quanyou Chen Liding Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china Res. Ctr. for eco-Environ. sciences Chinese Academy of Sciences Beijing 100085 China

In this paper,the eco-environmental susceptibility of Shangyi County,Northern Hebei Province of china has been calculated by using the weighted-addition method based on expert's giv- ing a mark to each influencing factor according to their knowledge on the influence of all the factors on eco-environmental *** eco-environmental classification and distribution map were reached based on the above results,its difference is mainly result from the physical conditions and human activity,however the value of eco-environmental susceptibility is only a relative index which can not completely reflect the quality of *** work provided a basis for control- ling the further development of desertification.

关键词： eco-environmental susceptibility weighted addition method.

eco－environmental　information　system　of　Tianjin　City─Design，implementation　and　applications

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 1994年第2期6卷 144-154页

作者： hu Xiaolin Yang Bangjie Zong Yaoguang Lu Li(Research center for eco-environmental sciences.chinese Academy of sciences, beijing 100085, china)

This paper describes the design, implementation and applications of theeco-environmental information system in Tianjin City, which is the kernel of the decision support sys-tem for urban eco-environmental regulation (DSSUER) The design of this information system isbased on the analysis of the requirements of users. The system features that it has expendability,maintainability and universality, makes data be shared between different components of DSSUERand provides help facilities and protection. The system is built by using database and graphic basetechnologies it consists of the main control module, data-management module and data-proassingniodule. The applications of this system is demonstrated by an example which is the case ofsuitability analysis of land use for residential areas in Tianjin.

关键词： eco-environmental information system land use database and graphic base technologies.

Lack of nano size effect on electrochemistry of dopamine at a gold nanoparticle modified indium tin oxide electrode

在线全文

学校读者我要写书评

暂无评论

Science china Chemistry 2010年第8期53卷 1778-1783页

作者： huANG RongFu & GUO Liang-Hong State Key Laboratory of environmental Chemistry and ecotoxicology Research center for eco-environmental sciences,chinese Academy of sciences,beijing 100085.china 1. State Key Laboratory of environmental Chemistry and ecotoxicology Research center for eco-environmental sciences Chinese Academy of Sciences Beijing 100085 China

Nanometer sized materials have been shown to possess excellent chemical and electrochemical catalytic *** this work,a gold nanoparticle (AuNP) modified indium tin oxide (ITO) electrode was employed for investigating its electro-catalytic *** was deposited on the 3-aminopropyltriethoxysilane (APTES) modified ITO electrode by self-assembly,and was characterized by scanning electron microscopy and cyclic *** the electrochemical reaction of dopamine was very sluggish on the ITO/APTES electrode,it was significantly enhanced after AuNP *** cyclic voltammogram exhibited apparent dependence on the surface coverage of 11 nm AuNPs,which could be rationalized by different modes of mass *** the different sizes of AuNP investigated,the lowest anodic peak potential was observed on 11 nm ***,the potential was still about 50 mV more positive than that obtained on a bulk gold electrode of similar *** is therefore concluded that there is no nanometer size effect of AuNP modified ITO on the electrochemistry of dopamine.

关键词： gold nanoparticle dopamine electrocatalysis indium tin oxide

Trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in beijing, china

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 2010年第8期22卷 1189-1194页

作者： Jianjie Fu, Yawei wang, Qunfang Zhou, Guibin Jiang State Key Laboratory of environmental Chemistry and ecotoxicology, Research center for eco-environmental sciences, chinese Academy of sciences, beijing 100085, china. [a] State Key Laboratory of environmental Chemistry ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Gaobeidian Lake, located in beijing, china, serves as a recipient lake for efluents from a large municipal sewage treatment plant （MSTP）. In order to evaluate the effects of discharging MSTP efluent on the mercury contamination of the local aquatic ecosystem, sediment cores, water, plankton, fish, and turtle samples were collected from Gaobeidian Lake for mercury speciation analysis. High concentrations of total mercury （T-Hg） were detected in sediment cores （5.24–17.0 μg/g dry weight （dw）, average： 10.1 μg/g）. The ratio of methylmercury （MeHg） to T-Hg was less than 0.3% in sediments and ranged from 35% to 76% in biota samples. The highest level of T-Hg and MeHg were found in aquatic bryophyte and crucian carp （3673 and 437 ng/g dw, respectively）. The relative contents of MeHg were significantly correlated with trophic levels （R2 = 0.5506, p 0.001）, which confirmed that MeHg can be bio-transferred and biomagnified via food chain in this aquatic ecosystem.

关键词： methylmercury total mercury trophic levels aquatic ecosystem municipal sewage treatment plants