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The metabolism of polycyclic aromatic hydrocarbons (PAHs) was studied in vivo and in vitro in systems consisting of Rigidoporus lignosus and its laccase, in the presence of so-called "mediator" compounds. The static culture of the native fungal strain was able to metabolize anthracene and 2-methylanthracene, but not 9-nitroanthracene. The addition of redox(More)
This paper studies the reaction products of alpha-pinene, beta-pinene, sabinene, 3-carene and limonene with OH radicals and of alpha-pinene with ozone using FT-IR spectroscopy for measuring gas phase products and HPLC-MS-MS to measure products in the aerosol phase. These techniques were used to investigate the secondary organic aerosol (SOA) formation from(More)
The ability of polycyclic aromatic hydrocarbons (PAHs) to interact with cell membranes outer lipid layer and subsequently to penetrate inside cells can be a prerequisite for exhibiting a mutagenic and carcinogenic activity. The effect exerted by pyrene, benzo[a]pyrene, and anthracene, three structurally similar polycyclic aromatic hydrocarbons possessing(More)
In order to document cytogenetic damage associated with air pollution and, possibly, with health effects in the city of Catania, Sicily (Italy), we analyzed the induction of chromosomal aberrations by extractable agents from airborne particulate matter in a Chinese hamster epithelial liver (CHEL) cells. These cells retain their metabolic competence to(More)
In recent years, the number of studies in the field of bioremediation has been growing steadily. Although a large number of studies provide information that is highly detailed and offer great amounts of knowledge on a given subject, the downside is that the hunt for more information requires the combined efforts of researchers from many areas, which are(More)
Geometries, relative stabilities, electronic excited states, atomic charges, and electronic dipole polarizabilities of dimethylnaphthalene (DMN) isomers have been calculated in gas and aqueous phases by ab initio and DFT methods. At the highest levels of calculation, alpha,alpha-DMN (2,6-DMN, 2,7-DMN, and 2,3-DMN) are the lowest energy isomers, while(More)
Supercritical fluid extraction (SFE) was used to extract polycyclic aromatic hydrocarbons (PAH) from a certified sample of marine sediment. This sample contains a great number of organic pollutants that are present in low concentrations. The extractions were carried out at 50 and 80 degrees C, at a pressure varying from 230 to 600 bar and using CO2 in the(More)
Polycyclic aromatic hydrocarbons (PAHs), before reaching DNA where they exert their activity, have to interact with the outer lipid layer of cell membranes and subsequently penetrate inside cells. Studying the interaction PAH-lipid membrane should be interesting in assessing the relevance of the medium in the absorption processes. A technique used to study(More)
Equilibrium geometries, infrared spectra, vertical first ionization potential (IP), electronic affinity (EA), dipole moment (mu) and electronic dipole polarizability (alpha) of 1,6- and 3,6-dinitrobenzo[a]pyrene isomers (1,6-DNBaP and 3,6-DNBaP) were evaluated by means of Density Functional Theory (DFT) and recent semiempirical PM6 method. Structural,(More)