Polycyclic aromatic hydrocarbons in the ambient air of suburban and industrial regions of central Taiwan

Fang, Guor‐Cheng; Wu, Yuehua; Fu, Peter P.; Yang, I-Lin; Chen, Ming‐Hsiang

doi:10.1016/s0045-6535(03)00706-9

Cited by 59 publications

(23 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since currently the literature data available on emission of organic pollutants released to the atmosphere from burning waste dumps is limited, the concentrations of gas-phase PAHs in collected samples were compared also to the results of other studies, conducted for urban areas with the use of similar sampling methods (polyurethane foam samplers). The average total PAHs concentration determined in this study was much higher than the values reported for Seoul, Korea (63.03 ng/m 3 ) [21] and for urban and industrial sites of southern and central Taiwan: 535.2-1123.7 ng/m 3 [5] and 652.1-950.7 ng/m 3 [22]. The average PAHs concentrations reported by [17] were also lower than the values reported in the study (2.14-167 ng/m 3 ).…”

Section: Resultscontrasting

confidence: 82%

Study of the polycyclic aromatic hydrocarbons content in gas released from burning mine waste dump

Smoliński

Kuna-Gwoździewicz

Łączny

et al. 2015

Acta Chromatographica

View full text Add to dashboard Cite

Section: Resultscontrasting

confidence: 82%

Study of the polycyclic aromatic hydrocarbons content in gas released from burning mine waste dump

Smoliński

Kuna-Gwoździewicz

Łączny

et al. 2015

Acta Chromatographica

View full text Add to dashboard Cite

“…The results were such that the average total PAHs concentrations for the industrial area in La Plata was 7.26 n m -3 which was about 1.53 and 5.48 times greater than traffic-influenced and control areas of La Plata and 3.49 and 4.75 times higher than traffic-influenced and control areas of Leipzig, German. Another study by Fang et al (2004) carried out in central Taiwan showed that the mean concentration of PAHs in Taichung industrial park were about 1230 ng m -3 which was 2.02 times higher than the values at Tunghai University Campus located in a suburban area. A study done at various sites in New Jersey, USA, shows that, the total PAH concentration in the ambient air of an industrial site was 76.2 ng m -3 which was 3.22 times greater than at a background site but 1.29 and 1.26 lower than at a commercial and mobile sources sites (Lin et al, 2011c).…”

Section: Pah Concentration In the Ambient Air Of Heavy Industrial Citiesmentioning

confidence: 80%

“…A study done at various sites in New Jersey, USA, shows that, the total PAH concentration in the ambient air of an industrial site was 76.2 ng m -3 which was 3.22 times greater than at a background site but 1.29 and 1.26 lower than at a commercial and mobile sources sites (Lin et al, 2011c). These observations were attributed to combustion processes involving coal, wood, and petroleumderived fuels at the industrial areas (Fang et al, 2004).…”

Section: Pah Concentration In the Ambient Air Of Heavy Industrial Citiesmentioning

confidence: 97%

An Overview: Polycyclic Aromatic Hydrocarbon Emissions from the Stationary and Mobile Sources and in the Ambient Air

Cheruiyot

Lee

Mwangi

et al. 2015

Aerosol Air Qual. Res.

136

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons are a class of semi-volatile organic carbons that are emitted from both natural and anthropogenic sources therefore are ubiquitous in nature. Their main sources are both fossil and biomass fuels as well as other feedstocks used in chemical and combustion processes. Mostly the combustion processes are PAH depletion processes rather than PAH generating processes. PAHs are emitted from both stationary and mobile sources at varying levels depending on the operation conditions such as fuels, feedstock, and control devices in use as well as process parameters for example combustion temperatures.After emission from sources, the fates of PAHs in the atmosphere include partitioning between gas and particulate phases, particle size distribution, long range transport, dry and wet deposition on to water bodies, soil, vegetation and other receptor surfaces as well as resuspension from receptor surfaces back to the atmosphere. These processes are controlled by their physiochemical properties. Additionally, it is through these processes that human beings are exposed to PAHs via inhalation, ingestion and dermal contact.Dry deposition is the major process through which PAHs from the atmosphere are made available to receptor surfaces including the human respiratory system. From studies with cumulative fractions of dry deposition and size distribution for particulate PAHs, it is evident that the coarse particles are majorly responsible for the highest fraction of deposition fluxes. This is especially true for the high molecular weight PAHs, since the low molecular weight PAHs are majorly in the gas phase, which have lower dry deposition velocities. On the other hand, the highest risk for human being comes in the form of fine particles, whose mean aerodynamic diameter is below 2.5 µm. This is because the particle bound content results and particle size distributions of PAHs indicate that the fine particles have the most PAH content owing to their large surface areas and high organic carbon content. For the wet deposition of PAHs, more research is recommended for measurement of scavenging ratios of individual PAHs, since there is a scarcity of studies focusing on this issue.PAH mutagenic activity and exposure risk of humans can be estimated using the deposition rates, toxicity levels based on benzo(a)pyrene, or biomarkers such as urinary 1-hydroxypyrene. Other parameters that have been used to evaluate the risks of various exposure groups include inhalation exposure levels (IEL), incremental lifetime cancer risk (ILCR), and estimation of maximum consumption time (t max ). Highway toll workers, back carbon workers and food vendors in night markets are among susceptible groups identified using these biomarkers and exposure parameters.To reduce exposure to human beings, PAH emissions need to be controlled at the sources. Control and reduction of PAH emissions from various sources involves largely altering the fuel and feedstock characteristics, using air pollution control devices and/or adjustin...

show abstract

“…Nowadays, there is a lot of concern about air quality in large urban areas, and it has been the subject of many studies. The harmful effects of polycyclic aromatic hydrocarbons (PAHs) on human health have been especially studied since some of these are carcinogenic and mutagenic and some are associated with acute and chronic health problems (Dallarosa et al 2005;Fang et al 2004). PAHs are made up of carbon and hydrogen with at least two fused benzene rings arranged in linear, cluster, or angular arrangements.…”

Section: Introductionmentioning

confidence: 99%

Concentrations, sources, and exposure profiles of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in the north central part of India

Masih

Saini²,

Singhvi³

et al. 2009

Environ Monit Assess

View full text Add to dashboard Cite

Airborne particulates (PM(10)) from four different areas within Agra city (a semi-arid region) were collected using respirable dust samplers during the winter season (Nov. 2005-Feb 2006) and were then extracted with methylene chloride using an automated Soxhlet Extraction System (Soxtherm). The extracts were analyzed for 17 target polycyclic aromatic hydrocarbons (PAHs) and the heterocycle carbazole. The average concentration of total PAH (TPAH) ranged from 8.04 to 97.93 ng m(-3). The industrial site had the highest TPAH concentration followed by the residential, roadside, and agricultural sites. Indeno(1,2,3-cd)pyrene, benzo(g,h,i)perylene, and benzo(b)fluoranthene were the predominant compounds found in the samples collected from all of the sites. The average B(a)P-equivalent exposure, calculated by using toxic equivalent factors derived from literature and the USEPA, was approximately 7.6 ng m(-3). Source identification using factor analysis identified prominent three, four, four, and four probable factors at industrial, residential, roadside, and agricultural sites, respectively.

show abstract

Polycyclic aromatic hydrocarbons in the ambient air of suburban and industrial regions of central Taiwan

Cited by 59 publications

References 12 publications

Study of the polycyclic aromatic hydrocarbons content in gas released from burning mine waste dump

Study of the polycyclic aromatic hydrocarbons content in gas released from burning mine waste dump

An Overview: Polycyclic Aromatic Hydrocarbon Emissions from the Stationary and Mobile Sources and in the Ambient Air

Concentrations, sources, and exposure profiles of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in the north central part of India

Contact Info

Product

Resources

About