Base de dados : MEDLINE
Pesquisa : D01.268.513 [Categoria DeCS]
Referências encontradas : 203 [refinar]
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[PMID]:28987569
[Au] Autor:Wang Y; Wu F; Liu Y; Mu Y; Giesy JP; Meng W; Hu Q; Liu J; Dang Z
[Ad] Endereço:State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
[Ti] Título:Effect doses for protection of human health predicted from physicochemical properties of metals/metalloids.
[So] Source:Environ Pollut;232:458-466, 2018 Jan.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Effect doses (EDs) of metals/metalloids, usually obtained from toxicological experiments are required for developing environmental quality criteria/standards for use in assessment of hazard or risks. However, because in vivo tests are time-consuming, costly and sometimes impossible to conduct, among more than 60 metals/metalloids, there are sufficient data for development of EDs for only approximately 25 metals/metalloids. Hence, it was deemed a challenge to derive EDs for additional metals by use of alternative methods. This study found significant relationships between EDs and physicochemical parameters for twenty-five metals/metalloids. Elements were divided into three classes and then three individual empirical models were developed based on the most relevant parameters for each class. These parameters included log-ßn, ΔE and X r, respectively (R = 0.988, 0.839, 0.871, P < 0.01). Those models can satisfactorily predict EDs for another 25 metals/metalloids. Here, these alternative models for deriving thresholds of toxicity that could be used to perform preliminarily, screen-level health assessments for metals are presented.
[Mh] Termos MeSH primário: Exposição Ambiental/estatística & dados numéricos
Poluentes Ambientais/toxicidade
Metaloides/toxicidade
Metais/toxicidade
[Mh] Termos MeSH secundário: Poluentes Ambientais/química
Poluentes Ambientais/classificação
Seres Humanos
Metaloides/química
Metaloides/classificação
Metais/química
Metais/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Metalloids); 0 (Metals)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180123
[Lr] Data última revisão:
180123
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171009
[St] Status:MEDLINE


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[PMID]:28804803
[Au] Autor:Kroukamp EM; Godeto TW; Forbes PBC
[Ad] Endereço:Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, 0002, South Africa.
[Ti] Título:Comparison of sample preparation procedures on metal(loid) fractionation patterns in lichens.
[So] Source:Environ Monit Assess;189(9):451, 2017 Aug 13.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The effects of different sample preparation strategies and storage on metal(loid) fractionation trends in plant material is largely underresearched. In this study, a bulk sample of lichen Parmotrema austrosinense (Zahlbr.) Hale was analysed for its total extractable metal(loid) content by ICP-MS, and was determined to be adequately homogenous (<5% RSD) for most elements. Several subsets of this sample were prepared utilising a range of sample preservation techniques and subjected to a modified sequential extraction procedure or to total metal extraction. Both experiments were repeated after 1-month storage at 4 °C. Cryogenic freezing gave the best reproducibility for total extractable elemental concentrations between months, indicating this to be the most suitable method of sample preparation in such studies. The combined extraction efficiencies were >82% for As, Cu, Mn, Pb, Sr and Zn but poor for other elements, where sample preparation strategies 'no sample preparation' and 'dried in a desiccator' had the best extraction recoveries. Cryogenic freezing procedures had a significantly (p < 0.05) negative effect on metal extractability, and is therefore inappropriate for sequential extraction procedures in lichens. Biotransformation over a period of a month is suspected for most elements, with the exception of Sr and Zn, where changes in the fractionation patterns were statistically significant (p < 0.05), indicating the need for minimal delay in sample cleaning and preservation when species fractionation patterns are of interest. This study also shows that the assumption that species stability can be ensured through cryopreservation and freeze drying techniques needs to be revisited.
[Mh] Termos MeSH primário: Fracionamento Químico/métodos
Monitoramento Ambiental/métodos
Líquens/química
Metaloides/química
[Mh] Termos MeSH secundário: Metais/análise
Metais/química
Reprodutibilidade dos Testes
Manejo de Espécimes
Análise Espectral
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170815
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6155-4


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[PMID]:28779427
[Au] Autor:Kumwimba MN; Zhu B; Muyembe DK
[Ad] Endereço:Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China.
[Ti] Título:Estimation of the removal efficiency of heavy metals and nutrients from ecological drainage ditches treating town sewage during dry and wet seasons.
[So] Source:Environ Monit Assess;189(9):434, 2017 Sep.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Vegetated drainage ditches (ecological drainage ditches, EDD) are commonly used for the treatment of nutrients, suspended solids, and pesticides, from agricultural lands and aquaculture effluent. However, their effectiveness to remove heavy metals/metalloids (HM/Ms) and fate remains largely unexplored. In addition, there exists some uncertainty concerning the performance of the EDD in treating HM/Ms. This study presents a thorough assessment on the removal efficiencies of HM/Ms and identifies the parameters affecting the HM/Ms removal process in the EDD receiving primary domestic sewage for 13 years. The mean concentrations of the studied HM/Ms in sediments were lower than those reported in the aquatic ecosystems affected by coal-mine drainage and industrial wastewaters. The results also showed that the concentrations of the selected HM/Ms in ditch sediment were generally far higher than the soil background values of Sichuan basin. Concentrations of all the studied HM/Ms and nutrients in water entering the EDD were significantly higher than the effluent. The annual mean removal efficiencies of Ni, Cu, Cr, Zn, Cd, Pb, As, Fe, Al, Mn, N, and P in the ecological drainage ditch were 50.6, 56.1, 63.3, 79.3, 67.5, 80.1, 60.3, 52.6, 19.8, 24.3, 72.0, and 59.7%, respectively. The study also displayed that dissolved oxygen levels at the outlet were significantly (p < 0.001) higher after passing into the EDD system. The pH was kept at neutral or alkaline. Removal of HM/Ms and nutrients was seasonal, generally peaking in the growing season. Sedimentation was the major mechanism removing HM/Ms within the EDD system. EDD was found to possess a favorable influence at mitigating HM/Ms and nutrients in situ and can be successfully utilized to resolve this type of environmental pollution.
[Mh] Termos MeSH primário: Drenagem Sanitária/métodos
Metais Pesados/análise
Eliminação de Resíduos Líquidos/métodos
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Ecologia
Ecossistema
Monitoramento Ambiental/métodos
Sedimentos Geológicos
Metaloides
Estações do Ano
Esgotos
Solo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals, Heavy); 0 (Sewage); 0 (Soil); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170806
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6136-7


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[PMID]:28646769
[Au] Autor:Cao S; Duan X; Ma Y; Zhao X; Qin Y; Liu Y; Li S; Zheng B; Wei F
[Ad] Endereço:School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
[Ti] Título:Health benefit from decreasing exposure to heavy metals and metalloid after strict pollution control measures near a typical river basin area in China.
[So] Source:Chemosphere;184:866-878, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The metal(loid) pollution still is a great concern due to the effects from urbanization and industrialization. While, the health risks from the toxic metal(loid)s could decrease if strict pollution control measures were adopted. However, few studies to date investigate the health risks of heavy metal(loid)s in a systematic river basin for the dependent residents, after taking pollution control measures. Thus, the contents of metal(loid)s (Cu, Pb, Zn, Cd, Mn, As) in surface water along a typical river basin were investigated in this study, and the potential non-carcinogenic and carcinogenic health risks posed to the residents were assessed. Although the soluble contents of Cu, Pb, Zn and Cd exceeded the respective thresholds in two sites located downstream the mine area, they were greatly decreased in comparison with previous contamination levels, and the soluble concentrations of all the metal(loid)s were within the relevant thresholds in the sites far away from the mining area. Moreover, the closer to the mining area, the higher the pollution levels of metal(loid)s. The total hazard index for non-carcinogenic risks of metal(loid)s were basically lower than the threshold (1) for the local population. Whereas, although the content of metal(loid)s were low (such as As), they could pose relative higher non-carcinogenic health risks. The result illustrated that pollution levels, toxicity of the contaminants and exposure behavior patterns all could contribute to the potential detrimental health risks. Additionally, the non-carcinogenic and carcinogenic risks from ingestion exposure were ∼2-∼4 orders of magnitude higher than those from dermal contact. The total carcinogenic risks were basically lower than the maximum tolerable levels (1.0 × 10 ), indicating carcinogenic risks from most areas of the river could also be accepted. Among different population groups, heavy metal(loid)s posed relative higher non-carcinogenic and carcinogenic risks to the children in 0-5 years old. Fortunately, the surface water in most area of this basin is safe in usage for the local population and the health risks were basically acceptable in case exposed to the target metal(loid)s, after the river basin was in the charge of strict pollution control measures.
[Mh] Termos MeSH primário: Exposição Ambiental/estatística & dados numéricos
Poluição Ambiental/estatística & dados numéricos
Mineração
[Mh] Termos MeSH secundário: Criança
China
Exposição Ambiental/análise
Exposição Ambiental/prevenção & controle
Monitoramento Ambiental
Poluição Ambiental/análise
Poluição Ambiental/prevenção & controle
Intoxicação por Metais Pesados
Seres Humanos
Metaloides
Metais Pesados/análise
Envenenamento
Medição de Risco
Rios
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals, Heavy)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170625
[St] Status:MEDLINE


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[PMID]:28641175
[Au] Autor:Djebbi C; Chaabani F; Font O; Queralt I; Querol X
[Ad] Endereço:Laboratoire des Ressources Minérales et Environnement. Département de Géologie, Faculté des Sciences de Tunis, Université Tunis-El Manar, 2092 Tunis, Tunisia. Electronic address: dje.chaima@gmail.com.
[Ti] Título:Atmospheric dust deposition on soils around an abandoned fluorite mine (Hammam Zriba, NE Tunisia).
[So] Source:Environ Res;158:153-166, 2017 10.
[Is] ISSN:1096-0953
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The present study focuses on the eolian dispersion and dust deposition, of major and trace elements in soils in a semi-arid climate, around an old fluorite (CaF ) and barite (BaSO ) mine, located in Hammam Zriba in Northern Tunisia. Ore deposits from this site contain a high amount of metal sulphides constituting heavy metal pollution in the surrounding environment. Samples of waste from the surface of mine tailings and agricultural topsoil samples in the vicinity of the mine were collected. The soil samples and a control sample from unpolluted area, were taken in the direction of prevailing northwest and west winds. Chemical analysis of these solids was performed using both X-ray fluorescence and X-ray diffraction. To determine the transfer from mine wastes to the soils, soluble fraction was performed by inductively coupled plasma and ionic chromatography. The fine grained size fraction of the un-restored tailings, still contained significant levels of barium, strontium, sulphur, fluorine, zinc and lead with mean percentages (wt%) of 30 (calculated as BaO), 13 (as SrO), 10 (as SO ), 4 (F), 2 (Zn) and 1.2 (Pb). Also, high concentrations of cadmium (Cd), arsenic (As) and mercury (Hg) were found with an averages of 36, 24 and 1.2mgkg , respectively. As a result of the eolian erosion of the tailings and their subsequent wind transport, the concentrations of Ba, Sr, S, F, Zn and Pb were extremely high in the soils near to the tailings dumps, with 5%, 4%, 7%, 1%, 0.8% and 0.2%, respectively. Concentration of major pollutants decreases with distance, but they were high even in the farthest samples. Same spatial distribution was observed for Cd, As and Hg. While, the other elements follow different spatial patterns. The leaching test revealed that most elements in the mining wastes, except for the anions, had a low solubility despite their high bulk concentrations. According the 2003/33/CE Decision Threshold, some of these tailings samples were considered as hazardous. Furthermore, other waste samples, considered non hazardous, were not inert. In contrast, the SO , Ba, Pb and Sb leachable contents measured in most of the soil samples were relatively high, exceeding the inert threshold for landfill disposal of wastes.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Poeira/análise
Monitoramento Ambiental
Metaloides/análise
Metais/análise
Poluentes do Solo/análise
[Mh] Termos MeSH secundário: Mineração
Tunísia
Vento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Dust); 0 (Metalloids); 0 (Metals); 0 (Soil Pollutants)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171120
[Lr] Data última revisão:
171120
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170623
[St] Status:MEDLINE


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[PMID]:28591640
[Au] Autor:Wang H; Feng M; Zhou F; Huang X; Tsang DCW; Zhang W
[Ad] Endereço:Engineering Innovation Center (Beijing), South University of Science and Technology of China, Beijing 100083, People's Republic of China; School of Environmental Science and Engineering, South University of Science and Technology of China, Shenzhen 518055, People's Republic of China.
[Ti] Título:Effects of atmospheric ageing under different temperatures on surface properties of sludge-derived biochar and metal/metalloid stabilization.
[So] Source:Chemosphere;184:176-184, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Ageing is a common phenomenon during biochar storage and its soil application. In this study, we exposed sludge-derived biochar (SDBC) in the air under 4 °C, 22 °C, and 45 °C for 30-120 d to imitate the ageing process after SDBC production. The aged SDBC was characterized and its sorption capacities for Pb(II), Cr(V) and As(III) were compared with the fresh ones in batch sorption experiments. The results showed an increase in acidity, cation exchange capacity, and carboxyl groups of SDBC surface, but a decrease in alkalinity and Fe(III) species during ageing, indicating the oxidation. In addition, ageing for more than 30 d was found to favor the Pb(II) and As(III) sorption, because of higher density of available oxygen-containing groups. The Cr(VI) sorption was found to be compromised by the ageing, because some reducing agents for Cr(VI) reduction was consumed there. Higher temperatures accelerated the above-mentioned ageing effect. Yet, when the SDBC was applied in the heavy-metal contaminated soil, its performance would be affected by both ageing of SDBC itself as well as long-term interactions among soil components, such as colloids and solution, heavy metals, and SDBC, which require further investigation.
[Mh] Termos MeSH primário: Carvão Vegetal/química
Poluentes Ambientais/química
Metaloides/química
Metais/química
Conceitos Meteorológicos
Modelos Químicos
Temperatura Ambiente
[Mh] Termos MeSH secundário: Atmosfera/química
Cátions
Poluentes Ambientais/análise
Compostos Férricos
Metaloides/análise
Metais/análise
Esgotos
Solo
Propriedades de Superfície
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cations); 0 (Environmental Pollutants); 0 (Ferric Compounds); 0 (Metalloids); 0 (Metals); 0 (Sewage); 0 (Soil); 0 (biochar); 16291-96-6 (Charcoal)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170608
[St] Status:MEDLINE


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[PMID]:28556812
[Au] Autor:Campagna M; Pilia I; Marcias G; Frattolillo A; Pili S; Bernabei M; d'Aloja E; Cocco P; Buonanno G
[Ad] Endereço:Department of Medical Sciences and Public Health, University of Cagliari, 09042, Monserrato, Italy. mam.campagna@gmail.com.
[Ti] Título:Ultrafine Particle Distribution and Chemical Composition Assessment during Military Operative Trainings.
[So] Source:Int J Environ Res Public Health;14(6), 2017 May 30.
[Is] ISSN:1660-4601
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:(1) Background: The assessment of airborne particulate matter (PM) and ultrafine particles (UFPs) in battlefield scenarios is a topic of particular concern; (2) Methods: Size distribution, concentration, and chemical composition of UFPs during operative military training activities (target drone launches, ammunition blasting, and inert bomb impact) were investigated using an electric low-pressure impactor (ELPI+) and a scanning electron microscope (SEM), equipped with energy-dispersive spectroscopy (EDS); (3) Results: The median of UFPs, measured for all sampling periods and at variable distance from sources, was between 1.02 × 10³ and 3.75 × 10³ particles/cm³ for drone launches, between 3.32 × 10³ and 15.4 × 10³ particles/cm³ for the ammunition blasting and from 7.9 × 10³ to 1.3 × 104 particles/cm³ for inert launches. Maximum peak concentrations, during emitting sources starting, were 75.5 × 106 and 17.9 × 106 particles/cm³, respectively. Particles from the drone launches were predominantly composed of silicon (Si), iron (Fe) and calcium (Ca), and those from the blasting campaigns by magnesium (Mg), sulphur (S), aluminum (Al), iron (Fe), barium (Ba) and silicon (Si); (4) Conclusions: The investigated sources produced UFPs with median values lower than other anthropogenic sources, and with a similar chemical composition.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Material Particulado/análise
[Mh] Termos MeSH secundário: Poluentes Atmosféricos/química
Monitoramento Ambiental/métodos
Seres Humanos
Metaloides/análise
Metais/análise
Militares
Exposição Ocupacional/análise
Tamanho da Partícula
Material Particulado/química
Espectrometria por Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Metalloids); 0 (Metals); 0 (Particulate Matter)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171011
[Lr] Data última revisão:
171011
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170531
[St] Status:MEDLINE


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[PMID]:28478542
[Au] Autor:Hoffman E; Lyons J; Boxall J; Robertson C; Lake CB; Walker TR
[Ad] Endereço:School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada.
[Ti] Título:Spatiotemporal assessment (quarter century) of pulp mill metal(loid) contaminated sediment to inform remediation decisions.
[So] Source:Environ Monit Assess;189(6):257, 2017 Jun.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:A bleached kraft pulp mill in Nova Scotia has discharged effluent wastewater into Boat Harbour, a former tidal estuary within Pictou Landing First Nation since 1967. Fifty years of effluent discharge into Boat Harbour has created >170,000 m of unconsolidated sediment, impacted by inorganic and organic contaminants, including metal[loid]s, polycyclic aromatic hydrocarbons (PAHs), dioxins, and furans. This study aimed to characterize metal(loid)-impacted sediments to inform decisions for a $89 million CAD sediment remediation program. The remediation goals are to return this impacted aquatic site to pre-mill tidal conditions. To understand historical sediment characteristics, spatiotemporal variation covering ~quarter century, of metal(loid) sediment concentrations across 103 Boat Harbour samples from 81 stations and four reference locations, were assessed by reviewing secondary data from 1992 to 2015. Metal(loid) sediment concentrations were compared to current Canadian freshwater and marine sediment quality guidelines (SQGs). Seven metal(loid)s, As, Cd, Cr, Cu, Pb, Hg, and Zn, exceeded low effect freshwater and marine SQGs; six, As, Cd, Cr, Pb, Hg, and Zn, exceeded severe effect freshwater SQGs; and four, Cd, Cu, Hg, and Zn, exceeded severe effect marine SQGs. Metal(loid) concentrations varied widely across three distinct temporal periods. Significantly higher Cd, Cu, Pb, Hg, and Zn concentrations were measured between 1998 and 2000, compared to earlier, 1992-1996 and more recent 2003-2015 data. Most samples, 69%, were shallow (0-15 cm), leaving deeper horizons under-characterized. Geographic information system (GIS) techniques also revealed inadequate spatial coverage, presenting challenges for remedy decisions regarding vertical and horizontal delineation of contaminants. Review of historical monitoring data revealed that gaps still exist in our understanding of sediment characteristics in Boat Harbour, including spatial, vertical and horizontal, and temporal variation of sediment contamination. To help return Boat Harbour to a tidal estuary, more detailed sampling is required to better characterize these sediments and to establish appropriate reference (background) concentrations to help develop cost-effective remediation approaches for this decades-old problem.
[Mh] Termos MeSH primário: Monitoramento Ambiental
Sedimentos Geológicos/química
Metaloides/análise
Metais/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Canadá
Água Doce
Resíduos Industriais/análise
Nova Escócia
Papel
Hidrocarbonetos Aromáticos Policíclicos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Industrial Waste); 0 (Metalloids); 0 (Metals); 0 (Polycyclic Aromatic Hydrocarbons); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170508
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-5952-0


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[PMID]:28391949
[Au] Autor:Ben Salem Z; Laffray X; Al-Ashoor A; Ayadi H; Aleya L
[Ad] Endereço:Bourgogne Franche-Comté University, Chrono-Environnement Laboratory, UMR CNRS 6249, F-25030 Besançon Cedex, France.
[Ti] Título:Metals and metalloid bioconcentrations in the tissues of Typha latifolia grown in the four interconnected ponds of a domestic landfill site.
[So] Source:J Environ Sci (China);54:56-68, 2017 Apr.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The uptake of metals in roots and their transfer to rhizomes and above-ground plant parts (stems, leaves) of cattails (Typha latifolia L.) were studied in leachates from a domestic landfill site (Etueffont, France) and treated in a natural lagooning system. Plant parts and corresponding water and sediment samples were taken at the inflow and outflow points of the four ponds at the beginning and at the end of the growing season. Concentrations of As, Cd, Cr, Cu, Fe, Mn, Ni and Zn in the different compartments were estimated and their removal efficiency assessed, reaching more than 90% for Fe, Mn and Ni in spring and fall as well in the water compartment. The above- and below-ground cattail biomass varied from 0.21 to 0.85, and 0.34 to 1.24kgdryweight/m , respectively, the highest values being recorded in the fourth pond in spring 2011. The root system was the first site of accumulation before the rhizome, stem and leaves. The highest metal concentration was observed in roots from cattails growing at the inflow of the system's first pond. The trend in the average trace element concentrations in the cattail plant organs can generally be expressed as: Fe>Mn>As > Zn>Cr>Cu>Ni>Cd for both spring and fall. While T. latifolia removes trace elements efficiently from landfill leachates, attention should also be paid to the negative effects of these elements on plant growth.
[Mh] Termos MeSH primário: Metaloides/análise
Metais Pesados/análise
Typhaceae/química
Instalações de Eliminação de Resíduos
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Biodegradação Ambiental
França
Tanques/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals, Heavy); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170421
[Lr] Data última revisão:
170421
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170411
[St] Status:MEDLINE


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[PMID]:28365504
[Au] Autor:Schroeder H; Fabricius AL; Ecker D; Ternes TA; Duester L
[Ad] Endereço:Federal Institute of Hydrology, Division G - Qualitative Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany.
[Ti] Título:Metal(loid) speciation and size fractionation in sediment pore water depth profiles examined with a new meso profiling system.
[So] Source:Chemosphere;179:185-193, 2017 Jul.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In an exemplary incubation study with an anaerobic sediment sampled at an oxbow of the river Lahn in Germany (50°18'56.87″N; 7°37'41.25″E) and contaminated by former mining activity, a novel meso profiling and sampling system (messy) is presented. Messy enables a low invasive, automated sampling of pore water profiles across the sediment water interface (SWI), down to ∼20 cm depth with a spacial resolution of 1 cm. In parallel to the pore water sampling it measures physicochemical sediment parameters such as redox potential and pH value. In an incubation experiment of 151 days the ability of the setup was proven to address several different aspects relevant for fresh water and marine sediment studies: (i) The influence of mechanical disturbance and oxygen induced acidification on the mobility of 13 metals and metalloids (Cd, Co, Cu, Fe, Mn, Mo, Ni, Sb, U, V, Zn) was quantified based on 11 profiles. The analytes were quantified by inductively coupled plasma-mass spectrometry. Three groups of elements were identified with respect to the release into the pore water and the overlying water under different experimental conditions. (ii) The capability to investigate the impacts of changing physicochemical sediment properties on arsenic and antimony (III/V) speciation is shown. (iii) An approach to obtain information on size fractionation effects and to address the colloidal pore water fractions (0.45 µm-16 µm) was successfully conducted for the elements Ag, As, Cu, Fe and Mn.
[Mh] Termos MeSH primário: Monitoramento Ambiental/métodos
Metaloides/análise
Metais/análise
Rios/química
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Água Doce/análise
Água Doce/química
Sedimentos Geológicos
Alemanha
Metais/química
Metais Pesados/análise
Mineração
Porosidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metalloids); 0 (Metals); 0 (Metals, Heavy); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170607
[Lr] Data última revisão:
170607
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170403
[St] Status:MEDLINE



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