Aromatic hydrocarbons are rated amongst the most important classes of compounds with regard to the formation of photo-oxidants in the lower atmosphere. A recent theoretical study [1] using a trajectory model approach estimated the aromatic hydrocarbons to be responsible for about 40 % of the anthropogenic ozone formation in north-western Europe, their contribution to the total nonmethane hydroc...

an aquifer located within a petroleum processing plant in moín, costa rica, suffers hydrocarbon pollution. this study aimed to determine the ability of indigenous microorganisms from this site to degrade polycyclic aromatic hydrocarbons (pahs) to evaluate the feasibility of an eventual bioremediation process. aerobic conditions were found in the aquifer, while microbial analyses of the groundwa...

The effects of varying doses of three polycyclic aromatic hydrocarbons, 3-methylcholanthrene (MCA), benzo(a)pyrene (BaP), and benzo(e)pyrene (BeP), on cell-mediated immune functions of in vivo mitogen-activated splenic lymphocytes were measured. Inbred mice (C57, C3H, and DBA) were given injections i.p. with phytohemagglutinin to activate splenic lymphocytes and were subsequently treated, via t...

The effects of varying doses of three polycyclic aromatic hydrocarbons, 3-methylcholanthrene (MCA), benzo(a)pyrene (BaP), and benzo(e)pyrene (BeP), on cell-mediated immune func tions of in vivo mitogen-activated splenic lymphocytes were measured. Inbred mice (C57, C3H, and DBA) were given injec tions i.p. with phytohemagglutinin to activate splenic lympho cytes and were subsequently treated, vi...

Abstract Here, we present a thorough structural study of small, easily accessible amino−organolithium compounds with bridging phenyl and naphthyl moieties. Their crystal structures most likely represent their aggregation as tetramers dimers in both hydrocarbon ethereal solvents. These were further used to generate corresponding aluminium model system. are reported too. All discussed focus on th...

The Deepwater Horizon (DWH) spill released 4.9 million barrels of oil into the Gulf of Mexico (GoM) over 87 days. Sediment and water sampling efforts were concentrated SW of the DWH and in coastal areas. Here we present geochemistry data from sediment cores collected in the aftermath of the DWH event from 1000-1500 m water depth in the DeSoto Canyon, NE of the DWH wellhead. Cores were analyzed ...

Air quality models that generate the concentrations of semi-volatile and other condensable organic compounds using an explicit reaction mechanism require estimates of the vapour pressures of the organic compounds that partition between the aerosol and gas phases. The model of Griffin, Kleeman and co-workers (e.g., Griffin et al., 2005) assumes that aerosol particles consist of an aqueous phase,...

Syntrophy among Archaea and Bacteria facilitates the anaerobic degradation of organic compounds to CH4 and CO2. Particularly during aliphatic and aromatic hydrocarbon mineralization, as in the case of crude oil reservoirs and petroleum-contaminated sediments, metabolic interactions between obligate mutualistic microbial partners are of central importance. Using micromanipulation combined with s...

Hydrocarbon-soluble β-diketiminato phenylcalcium derivatives, which display various modes of Ca−μ2-Ph−Ca bridging, are accessible from reactions Ph2Hg and [(BDI)CaH]2. Although the resultant compounds inert toward C−H bonds benzene, they yield selective uncatalyzed biaryl formation when reacted with readily available aryl bromides.