نتایج جستجو برای: polycyclic aromatic hydrocarbons pahs such as anthracene

تعداد نتایج: 5995970  

2006
Parviz Shojaosadati Shafiee Sayed Abbas Amir Hossein

In this study, the degradation potential of five polycyclic aromatic hydrocarbons (PAHs) by aerobic mixed bacterial cultures was investigated. Microorganisms were isolated from hydrocarbon contaminated soils of Shadegan wetland located in southwest of Iran. The degradation experiments were conducted in liquid cultures. PAH or PAHs concentration was 100 mg/L at the beginning of degradation exper...

Journal: :international journal of environmental research 2012
s.y. zhang q.f. wang s.g. xie

in this study, oxic and anoxic microcosms were constructed with aquifer sediment collected from the vicinity of a municipal solid waste composting site.phenanthrene was used as a model pah compound. the changes of bacterial and archaeal communities in microcosms were characterized with terminal restriction fragment length polymorphism. 16s rrna gene clone library analysis was also used to inves...

Journal: :Environmental Chemistry Letters 2021

Abstract Polycyclic aromatic hydrocarbons (PAHs) in atmospheric particulate matter have adverse effects on human health, yet total PAH concentrations should overestimate the toxicity compared to bioavailable amount of PAHs. To explore this hypothesis, we measured PAHs oral bioavailability vitro with aerodynamic diameter lower than 10 µm (PM ) using a test that mimics digestive system. This assa...

Journal: :caspian journal of environmental sciences 2013
m. soleimani

knowledge of transport and degradation of polycyclic aromatic hydrocarbons (pahs) is important in assessing pah contamination of soils and water resources. the transport of naphthalene, anthracene, pyrene and phenanthrene was determined in a contaminated calcareous soil obtained from the shadegan wetland (khozestan, iran) considering a column study in laboratory conditions. the pahs were added ...

Journal: :Chemosphere 2010
Bernd Schröder Luís M N B F Santos Marisa A A Rocha Mariana B Oliveira Isabel M Marrucho João A P Coutinho

The methodology for the prediction of properties of environmental relevance of polycyclic aromatic hydrocarbons based on the conductor-like screening model for real solvents (COSMO-RS/COSMOtherm) is presented and evaluated, with a special focus on the aqueous solubility of polycyclic aromatic hydrocarbons and related aromatic hydrocarbons (PAHs). It is shown that the solubility predictions as w...

Journal: :Chemical science 2015
Reinhard Berger Manfred Wagner Xinliang Feng Klaus Müllen

Based on polycyclic aromatic azomethine ylides (PAMYs), a metal-free "cycloaddition-planarization-sequence" is proposed, providing a unique entry to extended nitrogen-containing polycyclic aromatic hydrocarbons (N-PAHs). This method is highly versatile, as the structure of unprecedented N-PAHs can be tailored by the dipolarophile in the crucial 1,3-cycloaddition-reaction. Linear, as well as fiv...

2004
Nuttapun Supaka Pairoh Pinphanichakarn Kobchai Pattaragulwanit Suthep Thaniyavarn Toshio Omori Kanchana Juntongjin

A bacterial strain P2 capable of using phenanthrene as a sole source of carbon and energy was isolated from a lubricant-contaminated soil sample collected from a garage in Prajinburi province, Thailand and identified by 16S rRNA gene sequence analysis to be in the genus of Sphingomonas. The Sphingomonas sp. strain P2 rapidly degraded phenanthrene from 100 mgl to undetectable level by HPLC analy...

Journal: Pollution 2019

Finding an environment-friendly and affordable method to remove contaminated soils from Polycyclic Aromatic Hydrocarbons (PAHs) has now become an attractive field for researchers, with super-critical fluid extraction being an innovative process in the field of contaminated soil treatment. Extraction with super-critical fluid is a simple and rapid extraction process that uses super-critical flui...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Dorian S N Parker Fangtong Zhang Y Seol Kim Ralf I Kaiser Alexander Landera Vadim V Kislov Alexander M Mebel A G G M Tielens

Polycyclic aromatic hydrocarbons (PAHs) are regarded as key molecules in the astrochemical evolution of the interstellar medium, but the formation mechanism of even their simplest prototype-naphthalene (C(10)H(8))-has remained an open question. Here, we show in a combined crossed beam and theoretical study that naphthalene can be formed in the gas phase via a barrierless and exoergic reaction b...

Journal: :Cancer research 1976
G W Litman R T Litman C J Henry

Human erythrocytes have been used as a model for evaluating the chemical carcinogen-plasma membrane interaction. The carcinogenic aromatic amines 2-acetylaminofluorene, dimethylaminoazobenzene, and 3'-methyldimethylaminoazobene stabilize erythrocytes against lysis in hypotonic solution. In general, the stabilization potential of these compounds reflects their oil:water partition coefficients an...

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