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Study on the Aquatic Organism Criteria for Endosulfan in the Yangtze River Delta Region

Study on the Aquatic Organism Criteria for Endosulfan in the...

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环境安全与生态学基准/标准国际研讨会、中国毒理学会环境与生态毒理学专业委员会第三届学术研讨会、中国环境科学学会环境标准与基准专业委员会2013年学术研讨会

作者： Junying Zhou Xianglan Wang Lei Wang Zhengjun Shan Nanjing Institute of Environmental Science Ministry of Environmental Protection College of Environmental Science and Engineering Nanjing University of Information Science & Technology

With the rapid increase in pesticide production and use in China,there has been growing concern about the potential impact of pesticide exposure on the surface water and aquatic organism in the *** organism criteria are the scientific basis to formulate water quality standard,which play an important role in water quality ***,research of aquatic organism criteria for pesticide is still in the early stages in *** this basis,study on the aquatic organism criteria for Endosulfan in the Yangtze River Delta Region was conducted. Endosulfan is a pesticide which has been widely concerned due to its high toxicity and persistence, it was included in the list of Stockholm convention on POPs in ***,Endosulfan is still in production and use in the Yangtze River Delta Region where is not only the area with most concentrated pesticide production enterprises,but also the area with high rates of pesticide *** this study,15 kinds of representative aquatic organisms of Yangtze River Delta Region were selected,among which,there were 11 species of freshwater animals in 11 different families,2 freshwater algae in 2 different families,and 2 vascular plants in the family *** toxicity data of Endosulfan to the aquatic organisms was obtained through acute and chronic tests, and then Toxicity Percentile Rank method(the USEPA methodology,1985) was used to derive the aquatic organism criteria for *** results showed that Final Acute Value was 0.72μg/L,Final Chronic Value was 0.039μg/L,and Final Plant Value was 3.6 mg/*** to Toxicity Percentile Rank method,the acute criterion was equal to one-half the Final Acute Value, and the chronic criterion was equal to the lowest value of the Final Chronic Value and the Final Plant *** the acute and chronic criteria for Endosulfan in the Yangtze River Delta Region were 0.36μg/L and 0.039μg/L *** results of this study could be used in formulating water quality s

关键词： Study on the Aquatic Organism Criteria for Endosulfan in the Yangtze River Delta Region Delta

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Toxic Effects of Herbicide Paraquat on Four Species of Aquatic Plants from The Point of View of Community Ecology

Toxic Effects of Herbicide Paraquat on Four Species of Aquat...

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作者：张光富 Wang Linlin Li Lin Ge Feng Zhou Junying College of Life Sciences Nanjing Normal University/Jiangsu Key Laboratory of Biodiversity and Biotechnology The Environmental Protection Department of Nanjing Institute of Environmental Science

To explore the toxic effects of paraquat on aquatic plants at the level of community, two floating plants（Spirodela polyrrhiza,Lemna minor）and two submerged ones （Ceratophyllum demersum,Potamogeton crispus）,which occur at the same community with different layers in the wild,were selected as tested species in this *** results showed that: （1） after 96 hours treatment,four plants displayed different *** them,the most serious species was Potamogeton crispus,Ceratophyllum demersum in the second place, Lemna minor in the third,and finally Spirodela polyrrhiza;（2） their chlorophyll content all significantly decreased with increasing paraquat concentration,and after four days of treatments significant negative correlations were shown between chlorophyll content and paraquat concentration for all species（P<0.05）;according to chlorophyll content,in terms of Chronic value（ChV ） Spirodela polyrrhiza was 3.050μg·L but Lemna minor and Ceratophyllum demersum were 0.96μg·***,the former was 3.18 times as that of the latter two. However,the ChVof Potamogeton crispus was only 0.307μg·L;（3） except for Potamogeton crispus,the SOD,POD,CAT and soluble protein content rose at first and fell subsequently with increasing paraquat concentration;（4） by applying subordination function method,the analysis of antioxidases showed that their values of U（X） in order were Potamogeton crispus（0.8405）, Ceratophyllum demersum（0.525l）,Lemna minor（0.4952） and Spirodela polyrrhiza（0.114） ***,this implied that the toxic effect of paraquat on submerged plants, whether by the macro-observation or physiological test,was greater than that of floating plants.

关键词： Toxic Effects of Herbicide Paraquat on Four Species of Aquatic Plants from The Point of View of Community Ecology

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Effects of Microcystin-LR on Photosynthetic Activity and Chloroplast Ultrastructure of Rice (Oryza sativa ***) Leaves

Effects of Microcystin-LR on Photosynthetic Activity and Chl...

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作者： Jinlin Jiang Zhou Junying Shan Zhengjun Xu Weili Bu Yuanqing Nanjing Institute of Environmental Science MEP

Microcystins produced by toxic cyanobacteria in freshwater ecosystems can present a harmful effect on growth and development of terrestrial plants through irrigation with contaminated water,but its phytotoxic effects on photosynthesis of plants are seldom *** this study,the phytotoxic effects and possible action mechanism of microcystin-LR(MC-LR) on the photosynthesis rice(Oryza sativa ***) was *** growth and development, photosynthetic indicators including the net photosynthesis rate,stomatal conductance, intercellular carbon dioxide concentration and transpiration rate,as well as the ultrastuctural alteration of rice leaves were investigated when rice were exposed to 0,0.1,1,10,100,500μg/l of MC-LR for 21 *** show that the boveground biomass and plant height of rice were reduced significantly under the exposure of 1μg/l *** stomatal conductance, intercellular carbon dioxide concentration and transpiration rate were significantly inhibited by 46.6%,8.44%and 44.0%,respectively,in the group of 0.1μg/l MC-LR,while the net photosynthesis rate was significantly inhibited by 39.9%in 100μg/l *** higher MC-LR exposure,a significant decrease of Ch1a content accompanied by a increase of Ch1b content were observed revealed that MC-LR may cause a change in the pigment *** subcellular damages such as condensed chromatin and swollen or even disrupted thylakoids of chloroplast could be observed in mesophyll cells due to MC-LR exposure(>1μg/l).These results implied that the inhibition of photosynthesis might be an important action mechanism of MC-LR on terrestrial plants,inducing retardance in the growth and development of plants.

关键词： microcystin-LR photosynthesis chloroplast rice

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A SPATIAL RISK ASSESSMENT METODOLOGY FOR THE ANALYSIS OF INDUSTRIAL POLLUTION IN THE HULUNBEIER REGION(CHINA)

A SPATIAL RISK ASSESSMENT METODOLOGY FOR THE ANALYSIS OF IND...

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作者： Daiqing Li Chen Zhang Lisa Pizzol Andrea Critto Haibo Zhang Shihai Lv Antonio Marcomini Chinese Research Academy of Environmental Sciences Beijing Normal University Department of Environmental Sciences Informatics And StatisticsUniversity Ca' Foscari VeniceCalle Larga S.Marta 2137I-30123 VeniceItaly Department of Environmental Sciences Informatics And StatisticsUniversity Ca'Foscari VeniceCalle Larga S.Marta 21371-30123 VeniceItaly

In China,the rapid industrial development and urbanisation processes occurred over the past 30 years have increased dramatically the consumption of natural resources and raw materials and caused serious pollution of soil,natural waters and urban air,thus generating enormous economic and environmental *** a result,the coexistence of population and natural resources has become a prominent issue which requires the development of effective industrial planning to support regional sustainable economy ***,local authorities are asked to select safe sites for new industrial settlements according to environmental risk assessment approaches considering cumulative impacts of chemicals,synergistic pollution effects and risks of accidental ***, in order to support decision makers in the development of efficient and effective regional land-use plans,a spatial regional risk assessment methodology which integrates relative risk and socio-economic assessments was *** the non spatial traditional environmental exposure analysis and risk assessment of chemicals,the proposed approach considers the heterogeneity of the chemicals' spatial distributions,the spatial positions and relations between receptors and stressors,as well as the spatial distribution of the variables involved in the risk *** developed methodology combines spatial analysis and multi criteria decision analysis(MCDA) techniques with the aim of identify suitable areas for new industrial settlements and areas in need of intervention *** regional risk assessment methodology was applied to the Chinese region of Hulunbeier which is located in eastern Inner Mongolia Autonomous Region,adjacent to the Republic of Mongolia and *** application results demonstrated the effectiveness of the regional risk assessment methodology which proved to efficiently support regional land planning based on environmentally safe and economically profitable industria

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NON-TARGET SCREENING OF ORGANIC POLLUTANTS IN LANDFILL LEACHATES USING COMPREHENSIVE TWO-DIMENSIONAL GAS CHROMATOGRAPHY——TIME OF FLIGHT MASS SPECTROMETRY

NON-TARGET SCREENING OF ORGANIC POLLUTANTS IN LANDFILL LEACH...

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作者： Peter Haglund Niklas Trneman Martijn van Praag Mats Tysklind Department of Chemistry Ume University90187 UmeaSweden

In many parts of the world the main mean of waste disposal is *** has also been the case in Sweden,but in recent years there have been strict restrictions on what materials that are allowed on such facilities,and the organic fractions of waste is either composted or *** landfills do however still pose a threat to the environment as rain percolates the materials and leach various pollutants,which are removed to varying degree by various leachate treatment processes.A project was therefore initiated by the Swedish EPA to i) determine what pollutants are emitted from representative landfills and in what quantities and 2) compare the efficiency of different treatment *** poster summarizes the results of the first part. Leachate was collected from six landfills and was extracted by dichloromethane at various pH to obtain separate base-neutral and acidic contaminant *** latter was derivatized by *** samples were the analyzed by comprehensive two-dimensional gas chromatograph - time of flight mass spectrometry(GCxGC-ToF-MS).This technique separates the pollutants based on volatility(boiling point) in the first dimension and polarity in the second dimension. Because the modes of separation are independent of each other the total separation efficiency(peak capacity) are very *** of compounds can be physically *** use of a mass spectrometer for detection adds an additional separation mechanism and further expands the separation power,especially if combined,as in this case,with mathematical peak and spectra deconvolution routines. A result of the high separation power is that the quality of MS spectra generally is very good and,as a consequence,more than 700 pollutants could be tentatively identified using commercial spectral libraries;that contain ca 700 000 compounds. Many pollutants and pollutant classes were in common for the six leachate samples, *** hydrocarbons,cyclic hydrocarbons,ar

关键词： GAS NON-TARGET SCREENING OF ORGANIC POLLUTANTS IN LANDFILL LEACHATES USING COMPREHENSIVE TWO-DIMENSIONAL GAS CHROMATOGRAPHY TIME OF FLIGHT MASS SPECTROMETRY

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A WEIGHT-OF-EVIDENCE APPROACH FOR THE RANKING OF ENVIRONMENTAL CHEMICAL STRESSORS AT THE REGIONAL SCALE

A WEIGHT-OF-EVIDENCE APPROACH FOR THE RANKING OF ENVIRONMENT...

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作者： Giubilato Elisa Zabeo Alex Critto Andrea Giove Silvio Bierkens Johan Den Hond Elly Marcomini Antonio Department of Environmental Sciences Informatics and StatisticsUniversity Ca' Foscari VeniceItaly Department of Economics University Ca' Foscari VeniceItaly Environmental Risk and Health Flemish Institute for Technological Research(VITO)MolBelgium

Effective screening approaches are needed to address the application of detailed health risk and impact assessment towards the most critical environmental contaminants and risk *** this purpose,a "Risk-based Tool for the Regional Ranking of Environmental Chemical Stressors" has been developed to support decision-makers in identifying at the regional scale priority environmental contaminants,as well as priority areas,to be further investigated. This screening tool is based on the integration of three types of information,identified as "Lines of Evidence",namely:a) LoE "Environmental Contamination",providing information about potential population exposure through environmental contamination data in the region of interest;(b) LoE "Intake",including results from biomonitoring surveys(*** concentrations in human biological matrices) and supporting the knowledge on actual population exposure to chemicals;(c) LoE "Observed Effects",including information on the incidence of adverse health outcomes associated to exposure to environmental *** the proposed tool, a Weight-of Evidence approach has been implemented through an ad-hoc Multi-Criteria Decision Analysis methodology for integrating the information related to the three LoEs for each chemical stressor. The tool provides the user with a ranking of chemical stressors at the regional level as well as within each sub-area(e.g.,counties or provinces).Moreover,it supports the identification of priority sub-areas within the region,where environmental and health data suggest possible health effects and thus policy actions,sensibilisation or more investigation efforts may be necessary. The performance of the tool has been tested on a case-study in the region of Flanders (Belgium).Data on surface soil contamination by metals and organic contaminants have been integrated with data on exposure biomarkers and data on health effects measured in adolescents within the framework of the biomonitoring campai

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In Vitro Fish Metabolism Using Rainbow Trout Liver S9 Fractions to Evaluate the Bioaccumulation Potential of Fragrance Ingredients

In Vitro Fish Metabolism Using Rainbow Trout Liver S9 Fracti...

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作者：陆海天 Adamson Greg Laue Heike Jenner Karen J. Gfeller Hans Kern Susanne Nichols John W. Natsch Andreas Givaudan(Shanghai) Ltd China

Bioaccumulation is a critical endpoint in the PBT assessment(persistent,bioaccumulative, and toxic) of novel chemicals by the *** vivo determination of the bioconcentration factor (BCF) requires the use of large numbers of *** models are commonly used if no in vivo BCF data are *** models generally acknowledge the possibility that biotransformation can reduce the extent of *** measured data,however,modeled biotransformation rates are commonly set equal to *** vitro systems have been proposed as alternative methods that can be used to provide metabolic data needed to refine BCF computer model *** goal of our study was to determine the in vitro metabolic stability of common chemical classes of fragrance ingredients(esters,alcohols and ketones) using rainbow trout(Oncorhynchus mykiss) liver S9 fractions and to use in vitro clearance rate to model the bioaccumulation potential. Metabolic stability was determined by monitoring the disappearance of the parent molecule by GC-MS and metabolite formation by GC-MS and *** enzymatic turnover was found with isolongifolanone(CAS 23787-90-8).The ester serenolide(477218-42-1) was transformed rapidly. Alcohols like Ambermax(929625-08-1) and ketones like spirogalbanone(224031-70-3) were transformed moderately to *** routes were identified based on selective cofactor feeding and metabolite identification and involve ester cleavage,hydroxylations,reductions and conjugation with glucuronic acid and *** clearance rates measured in vitro were then fed into a refine BCF model and a good correlation between the refined BCF estimates and in vivo measured BCF values was *** vitro S9 metabolism data in combination with new refined BCF models are a valuable tool to assess bioaccumulation potential as part of a weight of evidence approach for registrations.

关键词： Rainbow In Vitro Fish Metabolism Using Rainbow Trout Liver S9 Fractions to Evaluate the Bioaccumulation Potential of Fragrance Ingredients

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ASSESSMENT OF CHILDREN LEAD EXPOSURE IN A SMELTER SITE AREA IN CHINA:APPROACHES FOR THE IDENTIFICATION AND RANKING OF THE MOST RELEVANT EXPOSURE ROUTES

ASSESSMENT OF CHILDREN LEAD EXPOSURE IN A SMELTER SITE AREA ...

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作者： Peizhong Li Elisa Giubilato Andrea Critto Chunye Lin Hongguang Cheng Antonio Marcomini Xiaoli Duan State Key Joint Laboratory of Environmental Simulation and Pollution Control School of EnvironmentBeijing Normal University Department of Environmental Sciences Informatics and StatisticsUniversity Ca'Foscari VeniceItaly State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences

More than 30 major lead pollution incidents had been reported in China from 2006 to 2012,and most of the victims were children living in mining and smelter *** are more vulnerable than adults to the cognitive and developmental effects of lead poisoning;therefore the assessment of risks posed by children lead exposure in China represents a priority issue for *** investigations were focused on the characterization of pollution sources and contamination of environmental media,however,the scarce availability of biomonitoring data and limited detailed exposure assessments in small industrial sites hamper the identification of the most relevant sources and exposure pathways to receptors,which are the potential key factors to be considered for preventing lead poisoning events. The application and comparison of two human exposure models has been performed in order to identify the relevance of different lead exposure routes for children in rural and smelter areas and to support the definition of effective risk management measures. A new toolbox for the integrated assessment of human exposure has been recently developed by EU researchers within 2FUN project,which coupled an environmental multimedia exposure model and an internal exposure model(physiologically based pharmacokinetic,PBPK) in the same platform. Through the application on a case study concerning children exposure in a historical Pb-Zn smelter site in southwest of China,the results of this new model were compared with the ones from the most common used Integrated Exposure Uptake Biokinetic ***,the application provided the identification of the most relevant exposure routes and the ranking of their individual contributions to the total children *** results of the application and of the comparison of the two exposure models will be presented and discussed.

关键词： ASSESSMENT OF CHILDREN LEAD EXPOSURE IN A SMELTER SITE AREA IN CHINA:APPROACHES FOR THE IDENTIFICATION AND RANKING OF THE MOST RELEVANT EXPOSURE ROUTES

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Toxicological Effect of Derivative Pollutants from Cyanobacterial Bloom of Lake Taihu and Their Toxic Molecular Mechanisms on Mice

Toxicological Effect of Derivative Pollutants from Cyanobact...

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作者：杨柳燕 School of the Environment Nanjing UniversityState Key Laboratory of Pollution Control & Resource Reuse

Cyanobacterial bloom has become an ecological disaster and causes huge health hazards to animals and human beings all over the ***(MC) is a kind of secondary metabolic pollutant produced by *** Taihu is undergoing a gradual eutrophication and an annual occurrence of cyanobacterial surface bloom in the warm *** reticulum stress(ERS) is a newly discovered pathway of medicating apoptosis and pathogenesis of many metabolic *** in murine liver and kidney exposed to microcystin-LR and cyanobacterial bloom's water samples from Lake Taihu were *** then the genes expression related lipid metabolism was *** to the organ specificity of toxic effects induced by MC-LR,exposure to 20μg/ kg/d MC-LR for 21 days induced damage and apoptosis in hepatic cells but not in renal ***-LR exposure at dose of 20μg/kg/d for 21 days induced ERS in hepatic cells but not in renal cells of mice and the involvement of ERS in induction of apoptosis in hepatic cells and anti-apoptosis in renal cells of mice exposed to ***- and cleaved-caspase-12-mediated ERS pathway played important roles in MC-LR-induced and ERS-dependent apoptosis in hepatic cells but not in renal cells under exposure to 20μg/kg/d MC-LR for 21 *** relevant special genes and proteins,such as CHOP and cleaved-caspase-12,could be considered as potentially new biomarkers used for detection of MC-LR toxicity in toxicological risk *** bloom's water samples from Meiliang Bay of Lake Taihu induced hepatic cell apoptosis via ERS but not renal *** Bay's water has lower toxicity to kidney than that to liver,but changed mRNA expression of molecules of ERS signaling in *** samples from Meiliang Bay caused hepatic lipid metabolism perturbations and abdominal obesity after the mice were chronically exposed to cyanobacrerial bloom's water *** sterol regulatory response of ERS played an important role in hepatic l

关键词： Toxicological Effect of Derivative Pollutants from Cyanobacterial Bloom of Lake Taihu and Their Toxic Molecular Mechanisms on Mice

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Chemicals of Emerging Concern in China

Chemicals of Emerging Concern in China

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作者： PAUL K.S.LAM KAREN Y.KWOK BINGQING ZHU EVA I.H.LOI H.W.LEUNG LEO W.Y.YEUNG MARGARET B.MURPHY NOBUYOSHI YAMASHITA LEO L.CHAN JAMES C.W.LAM State Key Laboratory in Marine Pollution City University of Hong Kong Department of Biology and Chemistry City University of Hong Kong Department of Chemistry University of TorontoTorontoOntarioCanada

Pharmaceuticals and personal care products(PPCPs),halogenated flame retardants and perfluoroalkyl substances(PFASs) are chemicals of emerging *** to their widespread use and continuous discharge,these chemicals have been detected in municipal wastewaters,surface and ground waters,drinking waters as well as sediments and aquatic biota all around the *** compounds are receiving wide attention due to their potential adverse effects on animals and humans at relatively low levels of *** these chemicals have been investigated and detected in different environmental compartments in recent years,their environmental releases,fates and risks have not been adequately studied by the authorities in ***,one of the most populous countries,has been developing rapidly on the industries of textiles,electronics,household goods and pharmaceuticals,and has become the largest manufacturer of these emerging chemicals in the world. However,there were insufficient clear management measures/guidelines of these chemicals existed in their rate of production and disposal,leading to their direct/indirect discharge into the environment. Comprehensive risk assessment for each of these chemicals of emerging concern is therefore necessary for the proper management of these contaminants in *** this purpose,environmental monitoring should be undertaken especially in areas where these toxic chemicals frequently occur and/or are released into the *** paper provides an overview on the current status of some important chemicals of emerging concern in China.

关键词： Chemicals of Emerging Concern in China

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