Polyaromatic Hydrocarbons
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. APCI(+)FT-ICR MS Analysis of Hydrocarbons Using Isooctane as Ionizing Reagent - A Comparison with HTGC-FID, GC×GC-MS and NMR
Hydrocarbons present in saturated fractions of crude oils can be assessed by atmospheric pressure chemical ionization (APCI) using small hydrocarbons as ionizing reagents in a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). In this work, five paraffin standards of different average molar mass distributions (Mw) were easily ionized by
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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2. Bioremediation of polyaromatic hydrocarbons (PAHs) using rhizosphere technology
The remediation of polluted sites has become a priority for society because of increase in quality of life standards and the awareness of environmental issues. Over the past few decades there has been avid interest in developing in situ strategies for remediation of environmental contaminants, because of the high economic cost of physicochemical strategies,
Braz. J. Microbiol.. Publicado em: 2015-03
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3. Caracterização cromatográfica de compostos orgânicos presentes nos resíduos sólidos provenientes de indústria de reciclagem de papel e sua aplicação na produção de briquetes de carvão vegetal
Recycling of paper in industrial scale has become an established practice worldwide. In this work, organic compositions of three different kinds of sludge generated in recycle paper industry were studied, and the incorporation of one of those sludge in briket was also investigated. The characterization of organic compounds in sludge samples and briket was pe
Química Nova. Publicado em: 2011-09
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4. Avaliação do processo oxidativo avançado por permanganato de potássio no tratamento de solos contaminados com idrocarbonetos poliaromáticos / Evaluation advanced oxidation Process by permanganate potassium in the Treatment of contaminated Soils with Polyaromatic Hydrocarbons
A contaminação de solo com petróleo é uma das grandes preocupações das indústrias que atuam no ramo e também dos órgãos ambientais. O petróleo é constituído basicamente por hidrocarbonetos alcanos e aromáticos. Os exemplos mais comuns dos hidrocarbonetos poliaromáticos são: naftaleno, antraceno, fenantreno, benzopireno e seus vários isômero
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2010
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5. Multiple responses of gram-positive and gram-negative bacteria to mixture of hydrocarbons
Most of our knowledge about pollutants and the way they are biodegraded in the environment has previously been shaped by laboratory studies using hydrocarbon-degrading bacterial strains isolated from polluted sites. In present study Gram-positive (Mycobacterium sp. IBB Po1, Oerskovia sp. IBB Po2, Corynebacterium sp. IBB Po3) and Gram-negative (Chryseomonas s
Brazilian Journal of Microbiology. Publicado em: 2010-10
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6. Caracterização de amostras petroquímicas e derivados utilizando cromatografia gasosa bidimensional abrangente (GCxGC)
The goal of this article is to discuss the application of comprehensive two-dimensional gas chromatography (GCxGC) to petrochemical samples. The use of GCxGC for petroleum and petroleum derivatives characterization, through group type analysis, or BTEX (benzene, toluene, ethylbenzene, xylenes), total aromatic hydrocarbons, polyaromatic hydrocarbons, sulfur-c
Química Nova. Publicado em: 2006-07
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7. Fungos degradadores de compostos organicos recalcitrantes sob condições microaerobia e anaerobia
The industrial activities of modern society produce great amounts of toxic compounds, which persist in rivers, soils and oceans, causing disturbance to ecosystems. Owing to an extracellular and non-specificenzymatic system produced by whiterot fungi, degradation of these xenobióticos became a viable alternative for environmental bioremediation. Such lignino
Publicado em: 2002
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8. Aplicação de silica, contendo o grupo etilenodiamina ancorado, como fase estacionaria para CLAE
ln the present work, chromatographic silica was chemically modified with the silylant agent: [3-(2-aminoethyl)aminopropyl]trimethoxysilane (AEAPTS). After this reaction, the residual silanol groups were deactivated with chlorotrimethylsilane. These silicas were reacted with copper ions in a methanol medium. This cation was strongly adsorbed through complexat
Publicado em: 1998
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9. Tenax-GC Extraction Technique for Residual Polychlorinated Biphenyl and Polyaromatic Hydrocarbon Analysis in Biodegradation Assays
A rapid Tenax-GC extraction technique has been evaluated for use in conjunction with aqueous biodegradation assays for polyaromatic hydrocarbons and polychlorinated biphenyls. The method was quantitatively efficient and reproducible for phenanthrene, but variable and not quantitative for Aroclor 1254 (polychlorinated biphenyls). Aqueous sample volumes and va
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10. Chemotaxis of Pseudomonas spp. to the polyaromatic hydrocarbon naphthalene.
Two naphthalene-degrading bacteria, Pseudomonas putida G7 and Pseudomonas sp. strain NCIB 9816-4, were chemotactically attracted to naphthalene in drop assays and modified capillary assays. Growth on naphthalene or salicylate induced the chemotactic response. P. putida G7 was also chemotactic to biphenyl; other polyaromatic hydrocarbons that were tested did
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11. Susceptibility to the biological effects of polyaromatic hydrocarbons is influenced by genes of the major histocompatibility complex
Polyaromatic hydrocarbons are ubiquitous environmental chemicals that are important mutagens and carcinogens. The purpose of this study was to determine whether genes within the major histocompatibility complex (MHC) influence their biological activities. Cell-mediated immunity to dimethylbenz(a)anthracene (DMBA) was investigated in congenic strains of mice.
The National Academy of Sciences.
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12. Enhancement of Solubilization and Biodegradation of Polyaromatic Hydrocarbons by the Bioemulsifier Alasan
Alasan, a high-molecular-weight bioemulsifier complex of an anionic polysaccharide and proteins that is produced by Acinetobacter radioresistens KA53 (S. Navon-Venezia, Z. Zosim, A. Gottlieb, R. Legmann, S. Carmeli, E. Z. Ron, and E. Rosenberg, Appl. Environ. Microbiol. 61:3240–3244, 1995), enhanced the aqueous solubility and biodegradation rates of polyar
American Society for Microbiology.