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  1 / 13225 MEDLINE  
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[PMID]:29430914
[Au] Autor:Alekseev II; Abakumov EV; Shamilishvili GA; Lodygin ED
[Ti] Título:[Heavy metals and hydrocarbons content in soils of settlements of the Yamal-Nenets autonomous region].
[So] Source:Gig Sanit;95(9):818-21, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:In August 2015 there were executed investigations on the study of the soils diversity of the Yamal-Nenets Autonomous Okrug. One of the directions of this work got be the study of urban soils of settlements of the Yamal-Nenents Autonomous Okrug. The sectors for the observation were settlement of Harsaim, village Aksarka, city of Salekhard, settlement Harp and city of Labytnangi. About 20 soil samples were collected during the field work. Samples were collected from a depth of 0-5 cm and 5-20 cm. Heavy metals (HM) were detected with the use of X-ray fluorescent analyzer "Spectroscan-MAX". The HM content values were compared with the corresponding Approxible Permissible Concentrations and Maximum Allowable Concentrations (MAC) adopted in Russia. Hydrocarbons content was determined by gravimetric method. Values of the hydrocarbons content in studied soils were compared with the existing regulations of the Russian Federation. The levels of soil contamination by hydrocarbons were determined. The study of soil samples from different settlements allowed to reveal characteristic features of soil contamination of separate settlements by HM and hydrocarbons and to compare them against each other. The vast majority of samples are characterized by arsenic exceedance of MAC, which should indicate to a high regional background of this element. For a more adequate assessment of the Zc meaning as the value of the total pollution index of soils there were used not only arithmetical average values of the coefficients of the chemical composition concentration (Kc), but also their average geometric values. According to levels of total soil contamination most of soil samples are characterized as non-hazardous (Zc<16). Calculation of soil pollution index showed that the most of soil samples have values less than 1. It characterizes soils as unpolluted. Statistical processing of obtained data in the media of the analytical software interface STATISTICA 10 showed a statistically significant difference in the content ofHM and hydrocarbons for the layer of 0-20 cm of the soils for three elements (Cu, Zn, Ni).
[Mh] Termos MeSH primário: Arsênico/análise
Monitoramento Ambiental
Indústrias Extrativas e de Processamento
Hidrocarbonetos/análise
Metais Pesados/análise
[Mh] Termos MeSH secundário: Monitoramento Ambiental/métodos
Monitoramento Ambiental/estatística & dados numéricos
Indústrias Extrativas e de Processamento/métodos
Indústrias Extrativas e de Processamento/normas
Seres Humanos
Concentração Máxima Permitida
Saúde da População
Saúde Pública/métodos
Saúde Pública/normas
Federação Russa/epidemiologia
Solo/química
Poluentes do Solo/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydrocarbons); 0 (Metals, Heavy); 0 (Soil); 0 (Soil Pollutants); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180213
[St] Status:MEDLINE


  2 / 13225 MEDLINE  
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[PMID]:29175405
[Au] Autor:Yang F; Xie S; Liu J; Wei C; Zhang H; Chen T; Zhang J
[Ad] Endereço:Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; Key Laboratory of Land Surface Pattern and Simulation, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
[Ti] Título:Arsenic concentrations and speciation in wild birds from an abandoned realgar mine in China.
[So] Source:Chemosphere;193:777-784, 2018 Feb.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Birds are at a higher level in the food chain; however, the potential bioaccumulation and biotransformation of arsenic (As) in birds in As mines has rarely been studied. In this study, four passerine bird species (tree sparrow [Passer montanus], light-vented bulbul [Pycnonotus sinensis], Garrulax canorus [Leucodioptron canorus], and magpie [Pica pica]) were collected from an abandoned As mine in China. The highest recorded As concentrations were 4.95 mg/kg and 51.65 mg/kg in muscles and feathers, respectively. Detection using high-performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC-ICP-MS) revealed six As species, including arsenite (As(III)), arsenate (As(V)), dimethylarsinic acid (DMA), monomethylarsonic acid (MMA), arsenobetaine (AsB) and arsenocholine (AsC), with the former three species as the dominant (>92%) and the latter three as the minor As species (<6.17%). Further analysis of the selected bird samples using the X-ray absorption near edge structure (XANES) technique revealed the existence of As(III)-tris-glutathione (As(III)-GSH), which can be regarded as equivalent to the non-extractable and unidentified As form in the HPLC-ICP-MS data. Both methods revealed similar patterns of As species in the birds from the As mine, with muscles containing mainly inorganic As and DMA and feathers containing mainly inorganic As. The results of this study contribute to the knowledge regarding As accumulation and speciation in terrestrial organisms.
[Mh] Termos MeSH primário: Arsênico/análise
Arsenicais/análise
Aves
Mineração
[Mh] Termos MeSH secundário: Animais
Arseniatos
Arsênico/química
Arsenitos
Ácido Cacodílico/análise
China
Cromatografia Líquida de Alta Pressão/métodos
Plumas/química
Espectrometria de Massas/métodos
Músculo Esquelético/química
Passeriformes
Sulfetos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arsenates); 0 (Arsenicals); 0 (Arsenites); 0 (Sulfides); 39895-81-3 (arsenocholine); 56320-22-0 (arsenic disulfide); AJ2HL7EU8K (Cacodylic Acid); J37VJ5709S (monomethylarsonic acid); N5509X556J (arsenite); N712M78A8G (Arsenic); N7CIZ75ZPN (arsenic acid); UWC1LS4V3I (arsenobetaine)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171128
[St] Status:MEDLINE


  3 / 13225 MEDLINE  
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[PMID]:28858707
[Au] Autor:Gao L; Gao B; Peng W; Xu D; Yin S
[Ad] Endereço:State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
[Ti] Título:Assessing potential release tendency of As, Mo and W in the tributary sediments of the Three Gorges Reservoir, China.
[So] Source:Ecotoxicol Environ Saf;147:342-348, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:As the largest man-made reservoir in China, the Three Gorges Reservoir (TGR) has significant influence on national drinking water safety. The geochemical behavior of trace elements at the sediment-water interface (SWI) is still unknown. The mobilization characteristics of trace elements (As, Mo and W)-determined by diffusive gradients in thin films (DGT)-were studied to quantitatively calculate the release trends in the SWI in three typical tributaries and the mainstream of the TGR in the summer. The results showed that concentrations of DGT-labile As, Mo and W in the overlying water and sediment cores showed significant variations in the ranges of 0.05-50.90, 0.30-1.63 and 0.01-0.42µgL , respectively. The apparent net diffusive fluxes were significantly positive in most sampling sites (77.8% for As, 88.8% for Mo and 66.6% for W), suggesting that the sediment was the source of these three elements. It was noteworthy that the maximum net diffusive fluxes of As and W were found in the upstream of Meixi tributary, which may be attributed to anthropogenic activities. In addition, As, Mo and W may be incorporated in Fe and Mn oxyhydroxides and these three elements simultaneously remobilized with Fe and Mn.
[Mh] Termos MeSH primário: Arsênico/análise
Monitoramento Ambiental/métodos
Sedimentos Geológicos/química
Molibdênio/análise
Tungstênio/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: China
Estações do Ano
Oligoelementos/análise
Recursos Hídricos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Trace Elements); 0 (Water Pollutants, Chemical); 81AH48963U (Molybdenum); N712M78A8G (Arsenic); V9306CXO6G (Tungsten)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170901
[St] Status:MEDLINE


  4 / 13225 MEDLINE  
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[PMID]:29029381
[Au] Autor:Coppola F; Almeida Â; Henriques B; Soares AMVM; Figueira E; Pereira E; Freitas R
[Ad] Endereço:Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
[Ti] Título:Biochemical responses and accumulation patterns of Mytilus galloprovincialis exposed to thermal stress and Arsenic contamination.
[So] Source:Ecotoxicol Environ Saf;147:954-962, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Organisms in marine systems are exposed to multiple stressors that create a range of associated environmental and ecotoxicological risks. Examples of stressors include alterations related to climate change, such as temperature increase, and the exposure to pollutants arising from human activities. The present study evaluated the impacts of Arsenic exposure (1mg/L) and warming (21°C) in Mytilus galloprovincialis, acting alone and in combination. Our results demonstrated that both Arsenic exposure and warming induced oxidative stress and reduced mussels metabolism, with changes becoming more prominent with the exposure time and when mussels were exposed to both stressors in combination. Furthermore, results obtained showed higher As accumulation in organisms exposed to warming treatments. The present study showed that under warming scenarios, the negative impacts induced by As may be enhanced in ecologically and economically relevant bivalves, with potential impacts on population stocks due to increased sensitivity to pollutants, which may eventually result in biodiversity loss and socio-economic impacts.
[Mh] Termos MeSH primário: Arsênico/toxicidade
Monitoramento Ambiental/métodos
Resposta ao Choque Térmico/efeitos dos fármacos
Mytilus/efeitos dos fármacos
Estresse Oxidativo/efeitos dos fármacos
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Animais
Arsênico/metabolismo
Biomarcadores/metabolismo
Mudança Climática
Temperatura Alta
Mytilus/metabolismo
Portugal
Poluentes Químicos da Água/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Water Pollutants, Chemical); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171015
[St] Status:MEDLINE


  5 / 13225 MEDLINE  
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[PMID]:28837872
[Au] Autor:Li J; Kosugi T; Riya S; Hashimoto Y; Hou H; Terada A; Hosomi M
[Ad] Endereço:Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka, Koganei, Tokyo 184-8588, Japan.
[Ti] Título:Pollution potential leaching index as a tool to assess water leaching risk of arsenic in excavated urban soils.
[So] Source:Ecotoxicol Environ Saf;147:72-79, 2018 Jan.
[Is] ISSN:1090-2414
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Leaching of hazardous trace elements from excavated urban soils during construction of cities has received considerable attention in recent years in Japan. A new concept, the pollution potential leaching index (PPLI), was applied to assess the risk of arsenic (As) leaching from excavated soils. Sequential leaching tests (SLT) with two liquid-to-solid (L/S) ratios (10 and 20Lkg ) were conducted to determine the PPLI values, which represent the critical cumulative L/S ratios at which the average As concentrations in the cumulative leachates are reduced to critical values (10 or 5µgL ). Two models (a logarithmic function model and an empirical two-site first-order leaching model) were compared to estimate the PPLI values. The fractionations of As before and after SLT were extracted according to a five-step sequential extraction procedure. Ten alkaline excavated soils were obtained from different construction projects in Japan. Although their total As contents were low (from 6.75 to 79.4mgkg ), the As leaching was not negligible. Different L/S ratios at each step of the SLT had little influence on the cumulative As release or PPLI values. Experimentally determined PPLI values were in agreement with those from model estimations. A five-step SLT with an L/S of 10Lkg at each step, combined with a logarithmic function fitting was suggested for the easy estimation of PPLI. Results of the sequential extraction procedure showed that large portions of more labile As fractions (non-specifically and specifically sorbed fractions) were removed during long-term leaching and so were small, but non-negligible, portions of strongly bound As fractions.
[Mh] Termos MeSH primário: Arsênico/análise
Modelos Teóricos
Poluentes do Solo/análise
Solo/química
Urbanização
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Fracionamento Químico
Indústria da Construção
Japão
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants); 0 (Water Pollutants, Chemical); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170825
[St] Status:MEDLINE


  6 / 13225 MEDLINE  
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[PMID]:29181620
[Au] Autor:Real MIH; Azam HM; Majed N
[Ad] Endereço:Department of Civil Engineering, University of Asia Pacific, Dhaka, Bangladesh.
[Ti] Título:Consumption of heavy metal contaminated foods and associated risks in Bangladesh.
[So] Source:Environ Monit Assess;189(12):651, 2017 Nov 27.
[Is] ISSN:1573-2959
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:This study investigated the magnitude of heavy metal contamination and determined the carcinogenic as well as non-carcinogenic risks associated with selected food consumption in Bangladesh. Commonly consumed varieties of rice, vegetables, and fish samples were analyzed to measure the concentrations of heavy metals such as cadmium, chromium, lead, arsenic, manganese, nickel, and zinc. These staple food items showed the greatest probabilities of heavy metal contamination in different phases of their production and marketing. Wide variations of metal concentrations were observed. Specifically, estimated daily intakes of arsenic and cadmium exceeded allowable daily intakes in all three food items. Toxicity scores of the metals were evaluated, and a comprehensive risk assessment was conducted to quantify the risks associated with the daily food consumption. Except for cadmium and lead in vegetables, all the contaminants present in each food item posed significant levels of carcinogenic risks up to 2.99 × 10 compared to the EPA recommended carcinogenic risk level of 1.0 × 10 . Cadmium and arsenic intake due to rice consumption also posed unsafe levels of non-carcinogenic risks of 4.587 and 6.648, respectively, compared to the EPA recommended non-carcinogenic risk level of 1.0. Finally, a revised set of permissible limits was proposed for the heavy metals detected in the food items. Those permissible limits would ensure the risks associated with food consumption below the allowable carcinogenic and non-carcinogenic risk levels. Thus, this comprehensive approach would provide guidelines to formulate adequate control measures and regulatory limits of toxic metals in foods produced and marketed in Bangladesh.
[Mh] Termos MeSH primário: Exposição Dietética/estatística & dados numéricos
Poluentes Ambientais/análise
Contaminação de Alimentos/análise
Metais Pesados/análise
[Mh] Termos MeSH secundário: Animais
Arsênico/análise
Bangladesh
Cádmio/análise
Cromo
Monitoramento Ambiental
Peixes
Contaminação de Alimentos/estatística & dados numéricos
Seres Humanos
Níquel
Medição de Risco
Verduras/química
Zinco
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Metals, Heavy); 00BH33GNGH (Cadmium); 0R0008Q3JB (Chromium); 7OV03QG267 (Nickel); J41CSQ7QDS (Zinc); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180307
[Lr] Data última revisão:
180307
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171129
[St] Status:MEDLINE
[do] DOI:10.1007/s10661-017-6362-z


  7 / 13225 MEDLINE  
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[PMID]:29216956
[Au] Autor:Yu SL; Xu LF; Wu JX; Yao CJ; Hu QY; Zhang CX; Zhao XY; Wei HY; Wang XK; Chen G
[Ad] Endereço:Department of Environmental Health, School of Public Health, Nantong University, Nantong 226019, Jiangsu, China.
[Ti] Título:Increased PIT1 and PIT2 Expression in Streptozotocin (STZ)-induced Diabetic Mice Contributes to Uptake of iAs(V).
[So] Source:Biomed Environ Sci;30(11):792-801, 2017 Nov.
[Is] ISSN:0895-3988
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: This study aimed to investigate the susceptibility of mice with streptozotocin(STZ)-induced diabetes mellitus (TIDM) to the uptake of pentavalent inorganic arsenic (iAsV) and the possible molecular mechanism. METHODS: TIDM was induced in mice by STZ. TIDM and normal mice were treated with 15.0 mg/kg Na2HAsO4·12H2O by intragastric administration. Then, the concentrations of arsenic in various tissues were measured by atomic fluorescence spectrometry. The gene expression levels of Pit1 and Pit2 were quantified by real-time RT-PCR, and their protein levels were detected by Western blotting in mouse heart, kidney, and liver tissues. RESULTS: The concentrations of arsenic in STZ-induced TIDM mouse tissues were higher at 2 h after intragastric administration of Na2HAsO4·12H2O. Compared with the levels in normal mice, PIT1 and PIT2, which play a role in the uptake of iAsV, were upregulated in the livers and hearts of TIDM mice. PIT1 but not PIT2 was higher in TIDM mouse kidneys. The upregulation of Pit1 and Pit2 expression could be reversed by insulin treatment. CONCLUSION: The increased uptake of iAsV in TIDM mouse tissues may be associated with increased PIT1 and/or PIT2 expression.
[Mh] Termos MeSH primário: Arsênico/farmacocinética
Diabetes Mellitus Experimental/metabolismo
Poluentes Ambientais/farmacocinética
Regulação da Expressão Gênica/fisiologia
Proteínas Cotransportadoras de Sódio-Fosfato Tipo III/metabolismo
Fator de Transcrição Pit-1/metabolismo
[Mh] Termos MeSH secundário: Animais
Masculino
Camundongos
Camundongos Endogâmicos ICR
Proteínas Cotransportadoras de Sódio-Fosfato Tipo III/genética
Fator de Transcrição Pit-1/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Pit1 protein, mouse); 0 (Sodium-Phosphate Cotransporter Proteins, Type III); 0 (Transcription Factor Pit-1); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171209
[St] Status:MEDLINE
[do] DOI:10.3967/bes2017.107


  8 / 13225 MEDLINE  
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[PMID]:29478657
[Au] Autor:Liang JH; Liu PP; Chen Z; Sun GX; Li H
[Ad] Endereço:Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin 541004, China; State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
[Ti] Título:Rapid evaluation of arsenic contamination in paddy soils using field portable X-ray fluorescence spectrometry.
[So] Source:J Environ Sci (China);64:345-351, 2018 Feb.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Arsenic (As) in paddy fields is deteriorating food security and human health through rice ingestion. Rice is the dominant food source of arsenic exposure to half of the world's population. Therefore, an in situ effective method for As risk evaluation in paddy soil is strongly needed to avoid As exposure through rice ingestion. Herein, we developed a rapid analytical methodology for determination of As in plant tissues using field portable X-ray fluorescence spectrometry (FP-XRF). This method was applied to rice roots in order to evaluate the As contamination in paddy soils. The results showed that rice roots with iron plaques were superior to rhizosphere soils for generating FP-XRF signals, especially for field sites with As concentrations lower than the soil detection limit of FP-XRF (30.0mg/kg). Moreover, the strong linear relationships of As concentrations between the rice roots and corresponding leaves and grains proved that the rice root, rather than the soil, is a better predictor of As concentrations in rice grains. The research provides an efficient As monitoring method for As contaminated paddy fields by using wetland plant roots with iron plaques and XRF-based analytical techniques.
[Mh] Termos MeSH primário: Arsênico/análise
Monitoramento Ambiental/métodos
Poluentes do Solo/análise
[Mh] Termos MeSH secundário: Monitoramento Ambiental/instrumentação
Limite de Detecção
Oryza
Rizosfera
Solo
Espectrometria por Raios X
Zonas Úmidas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants); N712M78A8G (Arsenic)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180227
[St] Status:MEDLINE


  9 / 13225 MEDLINE  
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[PMID]:29247935
[Au] Autor:Das N; Das A; Sarma KP; Kumar M
[Ad] Endereço:Department of Environmental Science, Tezpur University, Napaam 784028, Assam, India.
[Ti] Título:Provenance, prevalence and health perspective of co-occurrences of arsenic, fluoride and uranium in the aquifers of the Brahmaputra River floodplain.
[So] Source:Chemosphere;194:755-772, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The present work focuses on understanding the provenance, prevalence and health perspective of As and F along with possible co-occurrence of uranium (U) in the aquifers of the Brahmaputra floodplains (BFP), India. Groundwater (n = 164) and sediment samples (n = 5) were obtained from the upper, middle and lower BFP. Energy dispersive spectroscopy (EDX) revealed the presence of As, U and Fe in the sediment matrix. Regression analysis showed a weaker relationship between As and F co-occurrence. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) suggested reductive dissolution of Fe (hydr)oxides responsible for As release in the BFP, especially in the upper and lower BFP. Bicarbonate appeared to compete with As oxyanions for adsorption on positively charged surfaces leading to As release. Arsenic desorption in presence of PO , F and HCO at elevated pH appeared greatest in the upper BFP, suggesting the highest potential for co-occurrence. Co-occurrence, were mainly in isolated aquifers of the upper BFP owing to desorption of adsorbed As and F from Fe (hydr)oxides at higher pH. Weathering and dissolution of clay minerals in the upper BFP, and competitive desorption in presence of HCO and PO in the middle and lower BFP, respectively, explain variabilities in F release. Amorphous Fe (hydr)oxides like ferrihydrite act as sinks of U. Concentrations of As and F will likely increase in the future as projected from the saturated levels of goethite and ferrihydrite. Hazard indices (HI) revealed that children (3-8 years) were at greater health risk than adults.
[Mh] Termos MeSH primário: Arsênico/análise
Fluoretos/análise
Água Subterrânea/química
Rios/química
Urânio/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Adsorção
Adulto
Criança
Pré-Escolar
Análise por Conglomerados
Compostos Férricos/análise
Seres Humanos
Índia
Compostos de Ferro/análise
Minerais/análise
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ferric Compounds); 0 (Iron Compounds); 0 (Minerals); 0 (Water Pollutants, Chemical); 1310-14-1 (goethite); 4OC371KSTK (Uranium); 87PZU03K0K (ferric oxyhydroxide); N712M78A8G (Arsenic); Q80VPU408O (Fluorides)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171217
[St] Status:MEDLINE


  10 / 13225 MEDLINE  
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[PMID]:29247933
[Au] Autor:Ma J; Lei E; Lei M; Liu Y; Chen T
[Ad] Endereço:Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, PR China; Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, PR China; College of Natural Resources and Environment, South China Agricultural University, Guang
[Ti] Título:Remediation of Arsenic contaminated soil using malposed intercropping of Pteris vittata L. and maize.
[So] Source:Chemosphere;194:737-744, 2018 Mar.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Intercropping of arsenic (As) hyperaccumulator and cash crops during remediation of contaminated soil has been applied in farmland remediation project. However, little is known about the fate of As fractions in the soil profile and As uptake within the intercropping plants under field condition. In this study, As removal, uptake, and translocation were investigated within an intercropping system of Pteris vittata L. (P. vittata) and maize (Zea mays). Results indicated that the concentration of As associated with amorphous Fe (hydr)oxides in the 10-20 cm soil layer was significantly lower under malposed intercropping of P. vittata and maize, and As accumulation in P. vittata and biomass of P. vittata were simultaneously higher under malposed intercropping than under coordinate intercropping, leading to a 2.4 times higher rate of As removal. Although maize roots absorbed over 13.4 mg kg As and maize leaves and flowers accumulated over 21.5 mg kg As (translocation factor higher than 1), grains produced in all intercropping modes accumulated lower levels of As, satisfying the standard for human consumption. Our results suggested that malposed intercropping of a hyperaccumulator and a low-accumulation cash crop was an ideal planting pattern for As remediation in soil. Furthermore, timely harvest of P. vittata, agronomic strategies during remediation, and appropriate management of the above ground parts of P. vittata and high-As tissues of cash crops may further improve remediation efficiency.
[Mh] Termos MeSH primário: Arsênico/farmacocinética
Pteris
Poluentes do Solo/análise
Zea mays/metabolismo
[Mh] Termos MeSH secundário: Arsênico/análise
Arsênico/metabolismo
Biodegradação Ambiental
Biomassa
Seres Humanos
Componentes Aéreos da Planta/química
Raízes de Plantas/química
Solo/química
Poluentes do Solo/metabolismo
Poluentes do Solo/farmacocinética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants); N712M78A8G (Arsenic)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180228
[Lr] Data última revisão:
180228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171217
[St] Status:MEDLINE



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