Consulta: subjectFacets:"Polycyclic aromatic hydrocarbons"
Registros recuperados: 15
Data/hora: 02/06/2024 03:31:47

Assessing Photoinduced Toxicity of Polycyclic Aromatic Hydrocarbons  in an Urbanized Estuary
Provedor de dados: 7
Autores: Vo, M.; South Carolina Department of Natural Resources; vomw@chastn86.dhec.state.sc.us; Porter, D.E.; University of South Carolina; porter@sc.edu; Chandler, G.T.; University of South Carolina; tchandler@sph..sc.edu; Kelsey, H.; University of South Carolina; heath@inlet.geol.sc.edu; Walker, S.P.; University of South Carolina; sam@inlet.geol.sc.edu; Jones, B. E.; University of South Carolina; elrojo@mindspring.com.
Increases in contaminants associated with urban sprawl are a particular concern in the rapidly developing coastal areas of the southeastern United States. Polycyclic aromatic hydrocarbons (PAHs) are contaminants associated with vehicle emissions and runoff from impervious surfaces. Increased vehicular traffic and more impervious surfaces lead to an increased loading of PAHs into coastal estuarine systems. The phototoxic effect of PAH-contaminated sediments on a sediment-dwelling meiobenthic copepod, Amphiascus tenuiremis, was estimated in Murrells Inlet, a small, high-salinity estuary with moderate urbanization located in Georgetown and Horry Counties, South Carolina, USA. Field-determined solar ultraviolet radiation (UV) and UV extinction coefficients...
Tipo: Peer-Reviewed Reports
Palavras-chave: Hazard modeling; Photoinduced toxicity; Polycyclic aromatic hydrocarbons; Spatial modeling; Urbanized estuary.
Ano: 2004

The bacterial community structure in an alkaline saline soil spiked with anthracene
Provedor de dados: 69
Autores: Castro-Silva,Carolina; Ruíz-Valdiviezo,Víctor M; Valenzuela-Encinas,César; Alcántara-Hernández,Rocio J; Navarro-Noya,Yendi E; Vázquez-Núñez,Edgar; Luna-Guido,Marco; Marsch,Rodolfo; Dendooven,Luc.
Background: The application of polycyclic aromatic hydrocarbons (PAHs) will affect the bacterial community structure as some groups will be favoured and others not. An alkaline saline soil with electrolytic conductivity (EC) 56 dS m-1 was spiked with anthracene and acetone while their effect on bacterial community structure was investigated. Results: The percentages of Acidobacteria and Actinobacteria decreased over time, while the percentage of Proteobacteria, mostly Xanthomonadales, increased. The percentage of the phylotypes belonging to the Nocardioides, Rhodococcus and Streptomyces, known degraders of PAHs, was larger in the anthracene-amended soil than in the acetone-amended and unamended soil at day 14. The phylotypes belonging to the genera...
Tipo: Journal article
Palavras-chave: C dynamics; N mineralization; Phylogenetic analysis; Polycyclic aromatic hydrocarbons; Principal component analysis; UniFrac.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000500010

Cytochrome P450 (CYP) and glutathione S-transferases (GST) polymorphisms (CYP1A1, CYP1B1, GSTM1, GSTP1 and GSTT1) and urinary levels of 1-hydroxypyrene in Turkish coke oven workers
Provedor de dados: 74
Autores: Ada,Ahmet Oguz; Yilmazer,Meltem; Suzen,Sinan; Demiroglu,Canan; Demirbag,Ali Eba; Efe,Sibel; Alemdar,Yavuz; Burgaz,Sema; Iscan,Mumtaz.
Genetic polymorphisms of xenobiotic metabolizing enzymes have been associated with cancer risk. We evaluated the influences of genetic polymorphisms of polycyclic aromatic hydrocarbon (PAH) metabolizing enzymes on urinary 1-hydroxypyrene (1-OHP) excretion in Turkish coke oven workers. Urinary 1-OHP was analyzed by HPLC after enzymatic hydrolysis. Lymphocyte DNA was used for PCR-based genotyping of cytochrome P450 (CYP) polymorphisms (CYP1A1 and CYP1B1) and glutathione S-transferases (GST) polymorphisms (GSTM1, GSTT1 and GSTP1). The mean urinary 1-OHP levels of coke oven workers were significantly higher than that of controls. No significant difference was detected in the mean urinary 1-OHP levels of smokers and non-smokers either for coke oven workers or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polycyclic aromatic hydrocarbons; 1-hydroxypyrene; Coke oven workers; Cytochrome P450s; Glutathione S-transferases.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000400002

Métodos de extração de hidrocarbonetos policíclicos aromáticos em amostra de solo, sedimento e lodo.
Provedor de dados: 14
Autores: QUEIROZ, S. C. N.; FERRACINI, V. L.; SOUZA, D. R. C. de.
bitstream/item/12265/1/documentos_79.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Hidrocarbonetos policíclicos aromáticos; Métodos de extração; Análise química; Extração; Hidrocarboneto; Solo; Adubo de esgoto; Amostragem; Analytical methods; Extraction; Polycyclic aromatic hydrocarbons.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/83100

Fish Reproduction Is Disrupted upon Lifelong Exposure to Environmental PAHs Fractions Revealing Different Modes of Action
Provedor de dados: 5
Autores: Vignet, Caroline; Larcher, Thibaut; Davail, Blandine; Joassard, Lucette; Le Menach, Karyn; Guionnet, Tiphaine; Lyphout, Laura; Ledevin, Mireille; Goubeau, Manon; Budzinski, Helene; Begout, Marie-laure; Cousin, Xavier.
Polycyclic aromatic hydrocarbons (PAHs) constitute a large family of organic pollutants emitted in the environment as complex mixtures, the compositions of which depend on origin. Among a wide range of physiological defects, PAHs are suspected to be involved in disruption of reproduction. In an aquatic environment, the trophic route is an important source of chronic exposure to PAHs. Here, we performed trophic exposure of zebrafish to three fractions of different origin, one pyrolytic and two petrogenic. Produced diets contained PAHs at environmental concentrations. Reproductive traits were analyzed at individual, tissue and molecular levels. Reproductive success and cumulative eggs number were disrupted after exposure to all three fractions, albeit to...
Tipo: Text
Palavras-chave: Polycyclic aromatic hydrocarbons; Zebrafish; Spawning success; Fertilization; Gonad differentiation; Molecular mechanisms.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00355/46641/46465.pdf

Organic and inorganic human-induced contamination of Posidonia oceanica meadows
Provedor de dados: 5
Autores: Pergent, Gerard; Labbe, Celine; Lafabrie, Celine; Kantin, Roger; Pergent-martini, Christine.
In coastal environments, plants are used for phytoremediation of contamination. Organic and inorganic contaminants may be due to natural and/or anthropogenic sources. The aim of this study is to compare inorganic (trace metal) and organic (PAH) contamination in Posidonia oceanica and to analyse the relationship between these types of pollutants indeed very few studies have been interested in their correlations and common sources. P. oceanica leaves were collected in two sites exhibiting different levels of human-induced pressure. Higher values were recorded in the more polluted site (Toulon) for trace metals (Ag, Hg, Pb) as well as for PAHs (Medium Molecular Weight and High Molecular Weight) due to the presence of the city and/or harbour in proximity. For...
Tipo: Text
Palavras-chave: Trace metals; Polycyclic aromatic hydrocarbons; Contamination; Seagrass; Posidonia oceanica; Mediterranean.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00038/14913/15671.pdf

Organometallic nanoprobe to enhance optical response on the polycyclic aromatic hydrocarbon benzo[a]pyrene immunoassay using SERS technology
Provedor de dados: 5
Autores: Dribek, Mohamed; Rinnert, Emmanuel; Colas, Florent; Crassous, Marie-pierre; Thioune, Nene; David, Catalina; De La Chapelle, Marc; Compere, Chantal.
We demonstrated the use of a new organometallic nanoprobe for competitive surface-enhanced Raman scattering (SERS) immunoassay devoted to the detection of polycyclic aromatic hydrocarbons (PAH) such as benzo[a]pyrene (BaP) in seawater. The nanoprobes are gold nanoparticles (GNPs) labeled by a Raman reporter, the 5,5'-dithiobis(succinimidyl-2-nitrobenzoate) (DSNB) and functionalized with monoclonal antibodies anti-BaP. The antibodies are bound with a high specificity to the analyte while the GNPs enhanced the Raman scattering of the DSNB. This type of immunoassay involved the grafting of BaP onto a sensing surface. Thus, NH2-terminated self-assembled monolayer is formed on the surface of gold substrate using cysteamine. Amines finally reacted with...
Tipo: Text
Palavras-chave: Biosensor; Surface-enhanced Raman scattering; Polycyclic aromatic hydrocarbons; Benzo[a]pyrene antibody; Organometallic nanoprobe.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00417/52844/53870.pdf

Parental trophic exposure to three aromatic fractions of polycyclic aromatic hydrocarbons in the zebrafish: Consequences for the offspring
Provedor de dados: 5
Autores: Perrichon, Prescilla; Akcha, Farida; Le Menach, Karyn; Goubeau, Manon; Budzinski, Helene; Cousin, Xavier; Bustamante, Paco.
In recent decades, PAH emissions due to extensive anthropogenic activities have risen sharply causing considerable pollution of aquatic ecosystems. This pollution represents a threat for organisms, among them are fish. Consequently, prenatal stress can have important repercussions, and may impact survival and population recruitment. To investigate this point, eggs were collected from zebrafish exposed during 6 months by trophic route to three aromatic fractions from two different origins, pyrolytic (PY) and petrogenic (light (BAL) and heavy (HFO) fractions) sources. Chronic dietary exposure of the parents was performed at environmentally relevant concentrations (0.3 ×, 1 × and 3 ×; 1 × represents an environmental concentration measured in French estuary)....
Tipo: Text
Palavras-chave: Polycyclic aromatic hydrocarbons; Parental transmission; Fish early-life stages; PhotoMotor Response; Cardiac performance; PAH metabolites; Genotoxicity.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00259/37046/37174.pdf

A pollution-monitoring pilot study involving contaminant and biomarker measurements in the Seine Estuary, France, using zebra mussels (Dreissena polymorpha)
Provedor de dados: 5
Autores: Minier, Christophe; Abarnou, Alain; Jaouen Madoulet, Agnes; Le Guellec, Anne-marie; Tutundjian, Renaud; Bocquene, Gilles; Leboulenger, François.
Zebra mussel (Dreissena polymorpha) is an invasive species that has proliferated in European and North American rivers and lakes during the last century. In this study, D. polymorpha has been used to provide information on contamination levels and biological effects in the Seine Estuary (France). The bivalves accumulated polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) to a high degree with values reaching 800 ng/g dry weight for PCBs (sum of 20 congeners), and 1,000 ng/g dry weight of PAHs (sum of 14 compounds) in the whole body. These values are among the highest reported of PCBs and, to a lesser extent, of PAHs in other contaminated areas in the world. Toxic equivalent quantities of PCBs and PAHs detected in zebra mussels...
Tipo: Text
Palavras-chave: Biomarkers; Multixenobiotic resistance; Polycyclic aromatic hydrocarbons; Polychlorinated biphenyls; Dreissena polymorpha.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2130.pdf

Marine pollution: Let us not forget beach sand
Provedor de dados: 5
Autores: Galgani, Francois; Ellerbrake, Katrin; Fries, Elke; Goreux, Chantal.
Background: Assessing the chemical or bacterial contamination in marine waters and sediments is a very common approach to evaluate marine pollution and associated risks. However, toxicity and organic pollution of beach sands have not yet been considered, except in adjacent waters. In the present study, the toxicity and the chemical contamination of natural beach sands collected 20 m from the shoreline at two sites located on the Mediterranean Sea (Marseille and La Marana, Corsica) were studied. Results: Up to 16.93% (net percentage) abnormal or dead larvae was observed in elutriates prepared from the urban beach sand sample (Marseille); no significant toxicity was observed in the sample collected from the reference beach in La Marana. Results of Fourier...
Tipo: Text
Palavras-chave: Oyster larvae biotests; Sediments; Infrared spectroscopy; Gas chromatography-mass spectrometry; Microplastics; Polycyclic aromatic hydrocarbons; Mediterranean Sea; Bioavailability; Organic contaminants.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00353/46442/46186.pdf

Changes in Brain Monoamines Underlie Behavioural Disruptions after Zebrafish Diet Exposure to Polycyclic Aromatic Hydrocarbons Environmental Mixtures
Provedor de dados: 5
Autores: Vignet, Caroline; Trenkel, Verena; Vouillarmet, Annick; Bricca, Giampiero; Begout, Marie-laure; Cousin, Xavier.
Zebrafish were exposed through diet to two environmentally relevant polycyclic aromatic hydrocarbons (PAHs) mixtures of contrasted compositions, one of pyrolytic (PY) origin and one from light crude oil (LO). Monoamine concentrations were quantified in the brains of the fish after six month of exposure. A significant decrease in noradrenaline (NA) was observed in fish exposed to both mixtures, while a decrease in serotonin (5HT) and dopamine (DA) was observed only in LO-exposed fish. A decrease in metabolites of 5HT and DA was observed in fish exposed to both mixtures. Several behavioural disruptions were observed that depended on mixtures, and parallels were made with changes in monoamine concentrations. Indeed, we observed an increase in anxiety in fish...
Tipo: Text
Palavras-chave: Monoamine; Polycyclic aromatic hydrocarbons; Behaviour; Anxiety; Swimming activity; Zebrafish.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00375/48578/48900.pdf

Hydrocarbon pollution along Moroccan coasts and BPH activity in the mussel Perna perna
Provedor de dados: 5
Autores: Azdi, M.; Moukrim, A.; Burgeot, Thierry; Budzinski, H.; Chiffoleau, Jean-francois; Kaaya, A.; Zekhnini, A.; Narbonne, J. F.; Guarrigues, Ph.
Specimens of the mussel Perna perna were collected along Moroccan coasts to determine the concentrations of polycyclic aromatic hydrocarbons ( PAHs) bioaccumulated in the tissues, and to measure benzo[ a] pyrene hydroxylase (BPH) activity. Chemical analysis of PAHs show that the Mediterranean (Nador, Martil, Tanger) and central Atlantic coasts ( from Rabat to Jorf Lihoudi) are those most contaminated ( 351 245 ng.g(-1) dry weight in Tanger). The mussel contaminants were of mixed origin for most of the locations with non negligible inputs of petrogenic origin in many of them. Baseline levels of PAHs were between 6 and 55 ng.g(-1) dry weight. BPH activity showed significant correlation (r(s) = 0.64, P &lt; 0.05) with total PAH concentrations at the six most...
Tipo: Text
Palavras-chave: Mussel; Perna perna; Moroccan coasts; Polycyclic aromatic hydrocarbons; Benzoapyrene hydroxylase; Baseline level.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00000/10995/12929.pdf

Comparison of Polycyclic Aromatic Hydrocarbon (PAHs) concentrations in urban and natural forest soils in the Atlantic Forest (São Paulo State)
Provedor de dados: 42
Autores: Bourotte,Christine; Forti,Maria Cristina; Lucas,Yves; Melfi,Adolpho J.
Studies about pollution by Polycyclic Aromatic Hydrocarbons (PAHs) in tropical soils and Brazil are scarce. A study was performed to examine the PAHs composition, concentrations and sources in red-yellow Oxisols of remnant Atlantic Forest of the São Paulo State. Sampling areas were located in an urban site (PEFI) and in a natural one (CUNHA).The granulometric composition, pH, organic matter content and mineralogical composition were determined in samples of superficial soils. The sum of PAHs (ΣHPAs) was 4.5 times higher in the urban area than in the natural one. Acenaphthylene, acenaphthene, fluorene, phenanthrene and fluoranthene have been detected in the soils of both areas and presented similar concentrations. Acenaphthene and fluorene were the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Polycyclic aromatic hydrocarbons; PAHs; Tropical forest; Tropical soils; Urban soils.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000100013

Biodegradation of polycyclic aromatic hydrocarbons by soil fungi
Provedor de dados: 58
Autores: Clemente,Andrea R.; Anazawa,Tania A.; Durrant,Lucia R.
Thirteen deuteromycete ligninolytic fungal strains were grown in media containing polycyclic aromatic hydrocarbons (PAHs), for 6 and 10 days. The PAHs were added directly with the inocula or on the third day of cultivation. A selection of the best strains was carried out based on the levels of degradation of the PAHs and also on the ligninolytic activities produced by the fungi. The selected strains were cultivated for 3, 6, 9, 12 and 15 days in the PAHs-containing media. Degradation of PAHs, as measured by reversed-phase HPLC on a C18 column, varied with each strain as did the ligninolytic enzymes present in the culture supernatants. Highest degradation of naphthalene (69%) was produced by the strain 984, having Mn-peroxidase activity, followed by strain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradation; Ligninolytic enzymes; Polycyclic aromatic hydrocarbons; Fungi.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400001

Copaiba oleoresin: evaluation of the presence of polycyclic aromatic hydrocarbons (PAHs)
Provedor de dados: 60
Autores: Silva,Wilson Gomes da; Cortesi,Nicoletta; Fusari,Paola.
The copaiba oleoresin extracted by perforating the tree-trunk found in the Amazonian forest has been used by the native indigenous communities to treat several diseases and also as fuel for lighting and for the motorboats plying the region's rivers. Currently, the oleoresin is mostly employed as a traditional remedy, mainly for the treatment of tonsillitis and as an anti-inflammatory and healing agent in oil and capsule forms, and is also used in several industry sectors. Due to its use in oral form, especially as a traditional remedy, an analysis of the presence of polycyclic aromatic hydrocarbons (PAHs) as contaminants in the oleoresin was performed. PAHs are substances formed by two or more benzoic rings and found in the atmosphere as a residue from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Copaiba/oil; Copaiba/qualitative analysis; Polycyclic aromatic hydrocarbons; High performance liquid chromatography/qualitative analysis; Amazônia/traditional remedy.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000300025