The fate of 16 polycyclic aromatic hydrocarbons (PAHs), targeted by the USEPA agency, has been investigated during composting of lagooning sludge. Composting shows efficient decrease of the content and the bioavailability of each PAH. Biodegradation and sorption are suggested as the main mechanisms contributing to this decrease. During the stabilization phase of composting, extensive microbial ...

Concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were measured in livers of 81 adult female sea otters collected along the California coast in 1992-2002. Concentrations of summation operatorPAHs in livers of sea otters were in the range of 588-17400ng/g lipid wt (mean: 3880ng/g, lipid wt). On a wet weight basis, the concentrations ranged from 17 to 1430ng/g (mean: 146ng/g). Overall,...

The front cover picture is an artistic illustration of gold associated with HFIP, represented by a golden ball surrounded banner. This Au/HFIP duo efficiently transformed alkynylnaphthaldehydes to major trans tricyclic derivatives, according 6-enolendo-exo-trig pathway. Scope and limitations as well mechanistic studies for this rearrangement process were described leading functionalized ketones...

This study was conducted to determine the polycyclic aromatic hydrocarbons (PAHs) levels and health risk of yogurt butter samples collected from Tehran using MSPE/GC-MS (magnetic solid-phase extraction/gas chromatography-mass spectrometry). The results revealed that limit detection (LOD) quantification (LOQ) were ranged 0.040 0.060 0.121 0.181 μg/kg, respectively; with recoveries 86.1% 100.3%. ...

Abstract In recent years, extensive laboratory-scale research has focused on the biofilm formation, leaching, and migration of organic chemical compounds from plastic pipes into drinking water. This been conducted an existing distribution network in three rural villages near dead ends to study small diameter associated with stagnant or low flow conditions. The was constructed more than ten year...

Polycyclic aromatic hydrocarbons (PAHs) are key reference materials for the validation and parameterization of computationally cost-effective procedures such as density functional theory (DFT), semiempirical molecular orbital theory, mechanics. We obtain accurate heats formation (ΔHf,298) 20 PAHs with up to 18 carbon atoms by means explicitly correlated W1-F12 thermochemical procedure. The obta...