Polycyclic Aromatic Hydrocarbon Articles on Environmental XPRT

Particulate polycyclic aromatic hydrocarbons in urban air of Tehran

Epidemiological studies have shown correlations between the concentration of particles in the air and increase of daily rates of respiratory and cardiovascular diseases and mortality (Douglas et al.,1992; Jonathan et al.,1995; Auron et al.,1995). Elevated lung cancer rates among women in rural china have been attributed to emissions from their coal-fired stoves (Mumford et al.,1987;Alder and ...

Sep. 25, 2006

By University of Tehran

The analysis of polycyclic aromatic hydrocarbons in marine samples

Polycyclic aromatic hydrocarbons (PAH) have been determined in marine samples for many years, but have only rarely been included in either national or international monitoring programmes. PAH can arise in the environment from natural sources, oil and petroleum products and combustion processes. Although oil spills influence PAH concentrations in local areas, the major sources of PAH are ...

Jan. 26, 2004

By Inderscience Publishers

Particulate polycyclic aromatic hydrocarbons in urban air of Tehran

Epidemiological studies have shown correlations between the concentration of particles in the air and increase of daily rates of respiratory and cardiovascular diseases and mortality (Douglas et al.,1992; Jonathan et al.,1995; Auron et al.,1995). Elevated lung cancer rates among women in rural china have been attributed to emissions from their coal-fired stoves (Mumford et al.,1987;Alder and ...

Jul. 9, 2008

Distribution of polycyclic aromatic hydrocarbons in coke plant wastewater

The subject of examinations presented in this paper is the distribution of polycyclic aromatic hydrocarbons (PAHs) between solid and liquid phases in samples of raw wastewater and wastewater after treatment. The content of 16 PAHs according to the US EPA was determined in the samples of coke plant wastewater from the Zdzieszowice Coke Plant, Poland. The samples contained raw wastewater, ...

Dec. 13, 2013

By IWA Publishing

Sorption of polycyclic aromatic hydrocarbons to polystyrene nanoplastic

Microplastic has become an emerging contaminant of global concern. Bulk plastic can degrade to form smaller particles down to the nano‐scale ( ...

Nov. 20, 2015

By John Wiley & Sons, Ltd.

Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments

Total concentrations of Cd, Cr, Co, Fe, Pb, Ni, Mn and Zn were determined by atomic absorption spectrophotometry in the surface sediments of Taylor Creek, Southern Nigeria. The most concentrated trace metals, ranging from 113.2 to 5160.7 mg/g-dry weights were Fe, Pb, Mn, Ni and Zn. There was no significant variation in sediment-associated metal levels (P>0.05). The Metal Pollution Index (MPI) was ...

Mar. 20, 2007

By Center for Environment and Energy Research & Studies (CEERS)

Watershed-based sources of polycyclic aromatic hydrocarbons in urban storm water

Untitled Document Abstract—Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic and mutagenic compounds, ubiquitous in the air and water of urban environments, and have been ...

Jan. 1, 2006

By Southern California Coastal Water Research Project Authority (SCCWRP)

Elimination and accumulation of polycyclic aromatic hydrocarbons in urban stormwater wet detention ponds

The concentrations of polycyclic aromatic hydrocarbons (PAHs) in water and sediments of seven wet detention ponds receiving urban stormwater were investigated. The ponds comprised traditional wet detention ponds with a permanent wet volume and a storage volume as well as ponds that were expanded with sand filters and other means to improve the removal of micropollutants. The concentrations of ...

Jan. 1, 2011

By IWA Publishing

Phytoremediation of Alkylated Polycyclic Aromatic Hydrocarbons in a Crude Oil-Contaminated Soil

Abstract Phytoremediation uses plants and their associated microorganisms in conjunction with agronomic techniques to remove or degrade environmental contaminants. The objective of the field study was to evaluate the effect of vegetation establishment plus fertilizer addition on the biodegradation of alkylated polycyclic aromatic hydrocarbons in a crude oil-contaminated soil. Four ...

Dec. 31, 2005

Polycyclic aromatic hydrocarbons in Niger Delta soil: contamination sources and profiles

Abstract The distribution and sources of PAHs in soil as well as PAHs profiles have been investigated in areas with anthropogenic pollution in the Niger Delta (Nigeria) such as Warri and Ughelli. PAHs were identified in 21 soil samples (0- 10cm upper layer) collected in May, 2003. The typical total PAHs level in Niger Delta soil ranged from 182 ± 112 – to - 433 ±256 ìg/kg dw. PAH ...

Feb. 3, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Extraction of sediment‐associated polycyclic aromatic hydrocarbons with granular activated carbon

Addition of activated carbon (AC) to sediments has been proposed as a method to reduce ecotoxicological risks of sediment‐bound contaminants. The present study explores the effectiveness of granular AC (GAC) in extracting polycyclic aromatic hydrocarbon (PAH) from highly contaminated sediments. Four candidate GAC materials were screened in terms of PAH extraction efficiency using single‐step ...

Nov. 12, 2012

By John Wiley & Sons, Ltd.

Accumulation of Polycyclic Aromatic Hydrocarbons in some lichens of Garhwal Himalayas, India

Lichens collected from five different sites (11 localities) from Garhwal Himalayas, Uttaranchal, India, were analysed for individual Polycyclic Aromatic Hydrocarbons (PAHs). There was high spatial variability in the total PAH (ΣPAH) concentrations that ranged from 0.683 ppm to 33.72 ppm with an average concentration of 15.04 ± 12.853 (SD). To elucidate sources, six molecular indices ...

Dec. 2, 2009

By Inderscience Publishers

Analysis of polycyclic aromatic hydrocarbons by sensitized room temperature phosphorescence

Abstract Direct and selective simultaneous determination of several polycyclic aromatic hydrocarbons by sensitized room temperature phosphorescence in sodium dodecylsulphate micellar solutions was studied. This approach improved, for example, the selectivity factor in determining pyrene in the presence of fluoranthene by a factor of 350, and determined benz[a]anthracene and anthracene in the ...

Feb. 18, 2003

By Springer

Aliphatic and polycyclic aromatic hydrocarbons in sediments of Kaohsiung Harbour and adjacent coast, Taiwan

Surficial sediment samples collected from Kaohsiung Harbour and its nearby coast were analyzed for aliphatic hydrocarbons and parent polycyclic aromatic hydrocarbons (PAHs). According to our results, the average total concentrations of n-alkanes (n-C12 to C35) and aromatics (15 PAHs) were 4.33 µg g–1 dry weight (ranged 0.46–22.60) and 0.59 µg g–1 dry weight (ranged 0.09–1.75), respectively. The ...

Jan. 1, 2005

By Springer

A study of polycyclic aromatic hydrocarbons in airborne particulate matter in central Taiwan

Two sampling sites in central Taiwan, at Hungkuang University (HKU) and Tunghai University (THU), were chosen to contrast the content of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere from November 2000 to April 2001. PAHs that arise from incomplete combustion of organic materials, especially fossil fuels, are the major toxic pollutants in central Taiwan. This study aimed to analyse ...

Sep. 7, 2004

By Inderscience Publishers

Spatial variation of polycyclic aromatic hydrocarbons and equivalent toxicity in Sydney Harbour, Australia

Harbour sediments include wash-off from different nearby catchments that have various landuse activities. In this study the spatial variation of polycyclic aromatic hydrocarbons (PAHs) in Sydney Harbour was studied by analysing the sediment. The sediment was collected from 12 locations and 16 PAHs that are prioritized by the United States Environmental Protection Authority were analysed. The ...

Dec. 13, 2013

By IWA Publishing

Isolation and characterization of some polycyclic aromatic hydrocarbon degrading bacteria from Nsukka soils in Nigeria

Abstract: Twenty-four bacteria capable of utilizing naphthalene, as their sole source of carbon and energy for growth were isolated from three different sites in Nsukka, Nigeria. By standard bacteriological methods, these bacteria were characterized taxonomically as belonging to the genus Pseudomonas, Burkholderia or Actinomycetes. Two of the isolates, which showed the highest growth during ...

Apr. 10, 2006

By Center for Environment and Energy Research & Studies (CEERS)

Indirectly suspended droplet microextraction of water‐miscible organic solvents by salting‐out effect for the determination of polycyclic aromatic hydrocarbons

A simple and low cost method “indirectly suspended droplet microextraction of water‐miscible organic solvents (ISDME)” by salting‐out effect prior to high performance liquid chromatography and UV detection (HPLC‐UV) was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in different samples. ISDME is a combination of salting‐out extraction of water‐miscible organic solvent ...

Sep. 19, 2014

By John Wiley & Sons, Ltd.

Combined toxicity of polycyclic aromatic hydrocarbons and heavy metals to biochemical and antioxidant responses of free and immobilized Selenastrum capricornutum

The aquatic environment often contains different groups of contaminants, but their combined toxicity on microalgae has seldom been reported. The present study compared the toxic effects of combined mixed polycyclic aromatic hydrocarbons (PAHs) and heavy metals on growth and antioxidant responses of free and immobilized microalga, Selenastrum capricornutum. Five PAHs‐phenanthrene, fluorene, ...

Dec. 7, 2012

By John Wiley & Sons, Ltd.

Chronic toxicity of selected polycyclic aromatic hydrocarbons to algae and crustaceans using passive dosing

Due to the large number of possible aromatic hydrocarbon structures, predictive toxicity models are needed to support substance hazard and risk assessments. Calibration and evaluation of such models requires toxicity data with well‐defined exposures. The present study has applied a passive dosing (PD) method to generate reliable chronic effects data for eight polycyclic aromatic hydrocarbons ...

May 7, 2016

By John Wiley & Sons, Ltd.

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