polycyclic aromatic hydrocarbon Articles

The study of temple and pastureland particle-bound polycyclic aromatic hydrocarbons concentrations in central Taiwan

The concentrations of polycyclic aromatic hydrocarbons in the atmosphere were measured simultaneously at Tzu Yun Yen temple and Tung Hai University pastureland in Taichung, central Taiwan. At both sites, 24 h samplings were performed between August 2001 and December 2001. The results indicated that high molecular mass polycyclic aromatic hydrocarbons are predominant at the Tzu Yun Yen temple ...

Jan. 28, 2005

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-Verlag GmbH

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

Spatial and temporal variations of nitro-polycyclic aromatic hydrocarbons in PM 2.5 aerosols in Yangtze River Delta Region, China

Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) are of great interest because of their high potential mutagenicity and carcinogenicity. PM 2.5 aerosol campaigns were carried out for four seasons from December 2007 to January 2009 in Xujiahui, Baoshan and Lin’an in Yangtze River Delta Region, China. Nine nitro-PAHs were detected, the average seasonal concentrations for three sampling ...

Nov. 20, 2013

By Inderscience Publishers

Seasonal influence on urban dust PAH profile and toxicity in Sydney, Australia

Road dust is one of the major threats to the urban environment due to wash-off of dust to the surrounding catchments during wet weather period. The dust contains wide range of toxic contaminants such as heavy metals, polycyclic aromatic hydrocarbons (PAHs) and endocrine disrupting chemicals. Among the toxic contaminants, PAHs are of environmental concern due to their potential carcinogenic and ...

Jan. 1, 2011

By IWA Publishing

Methylated phenanthrenes are more potent than phenanthrene in a bioassay of human aryl hydrocarbon receptor (AhR) signaling

Alkylated polycyclic aromatic hydrocarbons (APAHs) are abundant in petroleum but data regarding their toxicological properties are limited. A survey of all monomethylated phenanthrene structures revealed that they were 2‐5 times more potent than phenanthrene for activation of human aryl hydrocarbon receptor in a yeast bioassay. Phenanthrenes with equatorial methyl groups had the greatest ...

Jul. 16, 2014

By John Wiley & Sons, Ltd.

Desorption kinetics of naphthalene from sediment particles: batch and stepwise desorption approach

We investigated three major parameters in simulating desorption behaviours: the pre-contamination period, dilution by clean water mass (dilution ratio) and the length of the time interval between dilutions, in both batch and stepwise desorption experiments using particles pre-contaminated with a polycyclic aromatic hydrocarbon, naphthalene (NAPH). We found that the dilution ratio plays a major ...

Feb. 1, 2010

By IWA Publishing

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

Extraction of Sediment using the SpeedExtractor E-916 for the Determination of Polycyclic Aromatic Hydrocarbons (PAH)

Polycyclic aromatic hydrocarbons (PAH) are chemical compounds that consist of fused aromatic rings and do not contain heteroatoms or carry substituents. They are of concern because some compounds have been identified as carcinogenic, mutagenic and teratogenic. Sediment samples origin from a round robin program (SETOC 2008/4, Wepal, Wageningen University) were extracted according to EPA 3545A with ...

Jan. 9, 2012

By BÜCHI Labortechnik AG

Modelling of wet deposition of atmospheric polycyclic aromatic hydrocarbons by the consecutive measurements in an urban area, Japan

The wet deposition for particulate matter (PM) and polycyclic aromatic hydrocarbons (PAHs) was modelled from the consecutive measurements of atmospheric concentration and wet deposition for particulate matter and PAHs in Higashi-Hiroshima city, Japan. In order to estimate the model in detail, the wet deposition was classified with that from gaseous and PM phase. The gaseous PAHs assumed to be ...

Oct. 1, 2010

By IWA Publishing

Organic and inorganic pollutants in marine sediments from northern and southern continental shelf of the Gulf of Mexico

The present work was developed in the continental shelf of Tamaulipas, Veracruz and Tabasco during 1999–2000 in the Gulf of Mexico. The main goal of this study was to evaluate levels of heavy metals (Cr, Ni, Pb and Cd) in total and bioavailable concentration, as well as the polycyclic aromatic hydrocarbons (PAHs); the organic matter and carbonates were determinated too. Heavy metals in total ...

Mar. 3, 2006

By Inderscience Publishers

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

Pilot Study of Polycyclic Aromatic Hydrocarbons in Surface Soils of Guiyang City, People`s Republic of China

Polycyclic aromatic hydrocarbons (PAHs) are a class of well-know roxic and carcinogenic compounds that are widely present in industrial waste, gas, automobile exhaust, coal tars, cigarette smoke and meat products, which constitute the most common ways of exposure of humans to the PAHs (Castillo et al. 2004). PAHs are listed by the US Environmental Protection Agency (USEPA) as priority ...

Oct. 12, 2005

By Springer-Verlag GmbH

Apply appropriate models in the study of dry deposition fluxes of particulate matter and polycyclic aromatic hydrocarbons (PAHs) in Tsukuba, Japan

In this study, plates for downward flux and upward flux were used to measure atmospheric dry deposition fluxes for particulate mass and polycyclic aromatic hydrocarbons (PAHs) in TERC (Tsukuba), Japan. Ambient particles concentrations were also collected using a high-volume air sampler, and ambient particle size distributions between 0.01 μm and 13.1 μm were measured using a low-pressure cascade ...

Apr. 8, 2009

By Inderscience Publishers

Waters Corporation - 2017 Environmental Application Notes Booklet

Abstract / Summary In these application notes, learn how Waters latest technologies are being applied to the analysis of dioxins, polar pesticides, polyfluoroalkyl substances (PFAS’s), Polycyclic aromatic hydrocarbons (PAHs), pharmaceuticals and personal care products (PPCPs), microcystins, veterinary drugs, and other environmental contaminants. Download the document ...

Sep. 21, 2017

By Waters Corporation

Impact of carwash discharge on stormwater quality (Toulouse, France)

The contribution of discharge from carwashes to pollutant levels in stormwater was evaluated. Five carwashes and two outlets in the city of Toulouse (France) were selected. Water samples were collected from December 2006 to December 2007. Concentrations and loadings of classical water quality parameters (conductivity, pH, turbidity, chemical oxygen demand, nitrogen, phosphorus, ammonium, nitrate, ...

Dec. 1, 2010

By IWA Publishing

Determination of Polycyclic Aromatic Hydrocarbons in Seafood by an Automated QuEChERS Solution

Abstract Polycyclic Aromatic Hydrocarbons (PAHs) are a large group of organic compounds found naturally in the environment. PAHs are monitored by the US Environmental Protection Agency due to their carcinogenic characteristics. In recent global events, PAHs have come to the attention for contamination in sea food samples due to the oil spills. In the oceanic environment, PAHs are bio-available ...

Mar. 19, 2015

By Teledyne Tekmar

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 (<100 nm), which are referred to as nanoplastics. Due to their high surface area, nanoplastic may bind hydrophobic chemicals very effectively, increasing their hazard when such nanoplastics are taken up by biota. Here we report distribution coefficients ...

Nov. 20, 2015

By John Wiley & Sons, Ltd.

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 shown to accumulate in coastal estuarine and marine sediments. Although previous studies have documented concentrations and loads of PAHs in urban runoff, little is known about the sources and ...

Jan. 1, 2006

By Southern California Coastal Water Research Project Authority (SCCWRP)

Particulate matter and particle-bound polycyclic aromatic hydrocarbons in the Dapu road tunnel in Shanghai

Airborne Particulate Matter (PM) was collected in a cross-river road tunnel using portable air samplers and a cascade impactor. Sixteen EPA priority Polycyclic Aromatic Hydrocarbons (PAH) in the PM were quantified by gas chromatography/mass spectrometry. Profiles and diagnostic ratios of PAHs were investigated, and size distribution of PM mass and PAHs were discussed. High concentrations of PM2.5 ...

Mar. 18, 2010

By Inderscience Publishers