A variety of polycyclic aromatic hydrocarbons and their dihydrodiol derivatives, arylamines, heterocyclic amines, and nitroarenes, were incubated with cDNA-based recombinant (Escherichia coli or Trichoplusia ni) systems expressing different forms of human cytochrome P450 (P450 or CYP) and NADPH-P450 reductase using Salmonella typhimurium tester strain NM2009, and the resultant DNA damage caused...

The use of aqueous solutions non-ionic surfactants like Tergitol 15-S7 and 15-S9 is proposed for the first time to ex-situ remediation Phenanthrene, Pyrene Benzo[ a ]anthracene polluted soils, thus generating Polycyclic Aromatic Hydrocarbons (PAH)-polluted effluents. effectiveness several potassium based-inorganic salts (K 3 PO 4 , K 2 HPO SO S O CO ) act as PAHs extractants was evaluated. immi...

Sphingobium sp. strain KK22 was isolated from a bacterial consortium that originated from cattle pasture soil from Texas. Strain KK22 grows on phenanthrene and has been shown to biotransform the high-molecular-weight (HMW) polycyclic aromatic hydrocarbon (PAH) benz[a]anthracene. The genome of strain KK22 was sequenced to investigate the genes involved in aromatic pollutant biotransformation.

'K'-region epoxides have been detected as microsomal metabolites of the polycyclic hydrocarbons phenanthrene and benz[a]anthracene (Grover et al., 1971b), of pyrene and benzo[a]pyrene (Grover et al., 1972) and of 7,12-dimethylbenz[a]anthracene (Keysell et al., 1972). Synthetic 'K'-region epoxides have been found to possess biological activity as mutagens (Huberman et al., 1971; Cookson et al., ...

Three strains of Comamonas testosteroni were isolated from river sediment for the ability to degrade phenanthrene; two of the strains also grew on naphthalene, and one strain also grew on anthracene. The homology of the genes for polycyclic aromatic hydrocarbon degradation in these strains to the classical genes (nah) for naphthalene degradation from Pseudomonas putida NCIB 9816-4 was determine...

A new family of aryl-pi-donor-aryl molecules has been synthesized and studied with respect to their photophysical properties and electrogenerated chemiluminscence (ECL) for the first time. Anthracene, phenanthrene, naphthalene, biphenyl, and fluorene were coupled with N,N-dimethylanilino moiety via a C-C triple bond (1-7). Introduction of such a strong electron-donating moiety as N,N-dimethylan...

This paper presents the characterization of polycyclic aromatic hydrocarbons (PAHs) in solid-surface fluorescence as the first step for obtaining new optical sensors for PAHs screening. The fluorescence properties of the EPA-PAHs (naphthalene, acenaphthene, acenaphthylene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo[a]anthracene, benzo[k]fluoranthene, benzo[b]fluor...