atom transfer radical polymerization (atrp) of styrene was carried out at 105°c and a monte carlo simulation was employed to model the system. the variations of monomer conversion, the initiator concentration, average molecular weight, and molecular weight distribution were evaluated as the reaction proceeded. according to the results obtained, for similar reaction time, monomer conversion is h...

We have developed an improved method for the analysis of human urine for 1-hydroxypyrene (1-HOP), an accepted biomarker of polycyclic aromatic hydrocarbon uptake. This method takes advantage of commercially available 96-well format devices, which expedite sample preparation before quantitation by HPLC with fluorescence detection. In addition to improved speed of analysis, which is critical for ...

a two-week tunnel study was conducted in monterrey, mexico during june 2009 to characterizevolatile organic compound (voc) emissions from the local vehicle fleet and estimate the correspondingemission factors (efs). the loma larga tunnel (llt), a 532 meter-long structure that is mainly used by lightduty gasoline-powered vehicles was used as the experimental set-up. ambient air samples (2-hour a...

Pyrolysis of high impact polystyrene (HIPS) waste has been investigated under different process parameters, such as temperature, heating rate and types of zeolitic catalysts to produce valuable liquid products. Liquid, gas and coke as products of pyrolysis and aromatic, naphthene, olefin and paraffin as liquid components were obtained and their molecular weight distributions were studied with c...

a two-week tunnel study was conducted in monterrey, mexico during june 2009 to characterizevolatile organic compound (voc) emissions from the local vehicle fleet and estimate the correspondingemission factors (efs). the loma larga tunnel (llt), a 532 meter-long structure that is mainly used by lightduty gasoline-powered vehicles was used as the experimental set-up. ambient air samples (2-hour a...

Polycyclic aromatic Hydrocarbons, PAHs are harmful persistent organic pollutants formed by incomplete combustion of matter. They carcinogenic and mutagenic can occur in foods. These underutilized grains- guinea corn, pigeon peas bambra nut commonly consumed South East Nigeria. This study aimed to quantitatively determine the polycyclic hydrocarbons contamination levels these grains (guinea bamb...

In order to reveal the pollution characteristics and risk level of polycyclic aromatic hydrocarbons (PAHs) exposed air from open burning in China, PM 2.5 samples were collected different types municipal solid waste (MSW). The component MSW differed plastics, paper, wood bamboo, mixed garbage. A flue gas dilution sampling system was employed simulate testing on functional urban areas. Emission h...

Pseudomonas fragi strain DBC was isolated from crude oil-contaminated soil. The genome of P. fragi DBC is comprised of 5,072,304 bp with 54.09% GC content. Genes for degradation of polyaromatic hydrocarbons were found in the genome, in addition to genetic elements for related physiological functions such as chemotaxis, detoxification, and quorum sensing.

The genus Rhodococcus is known for its ability to degrade various xenobiotic compounds. Rhodococcus sp. strain P14 isolated from crude oil-contaminated sediments can degrade mineral oil and polycyclic aromatic hydrocarbons (PAHs). The draft genome sequence of Rhodococcus sp. P14 was obtained using Solexa technology, which provided an invaluable genetic background for further investigation of th...