Identification of volatile hydrocarbons as mobile source tracers for fine-particulate organics

Airborne concentrations of several VOCs were measured in the city of Martorell (Spain) and analyzed by using a receptor modeling approach in order to assess the contribution of several potential sources of VOCs. In addition, VOC concentrations in Martorell are compared to VOC levels in 16 other cities of the world. Special attention throughout the paper is focused on the comparison between results obtained with data from an urban environment and data from a suburban area. Compared to the other cities, VOCs air quality in Martorell do not stand out for being neither among the worst nor among the best. The goal of setting relationships between airborne concentrations and pollutant sources is approached by a principal component analysis coupled to multiple linear regression. These procedures allow one to identify sources of VOCs pollution. A subsequent multiple linear regression allows us to estimate emission profiles for significant sources. The main source of VOCs pollution in Martorell is road traffic, contributing 62% of total pollution. Other identified sources of VOCs are the manufacture of aromas and essences (17%), a chemical industry of chlorinated compounds, and a wastewater facility (together, 6%). These latter three point sources are located by establishing relationships between wind directions and peak concentrations.

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“…i Sweet and Vermette (11). j Zwedinger et al(30). k After several references cited in the text(24)(25)(26).…”

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confidence: 99%

Applying Receptor Models To Analyze Urban/Suburban VOCs Air Quality in Martorell (Spain)

Baldasano

Delgado

Calbó

1998

Environ. Sci. Technol.

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“…The published error bounds for the constant term (5,6) indicate that a value of zero can not be ruled out with confidence. Indeed, a zero intercept is likely.…”

Section: Resultsmentioning

confidence: 99%

“…Apportionment of the Boise field study data indicated that, on average, the extractable organic matter (EOM) on the fine ambient particles in Boise came primarily (>89%) from RWC and mobile sources (MS) (6). The remaining 1 1% of the EOM may have come from a different source, or it may also have derived from RWC and MS, with the 11% residual representing the combined uncertainty in the measurements and the apportionment model.…”

Section: Concentraions Ofpollutantsmentioning

confidence: 99%

Exposure and Risk from Ambient Particle-Bound Pollution in an Airshed Dominated by Residential Wood Combustion and Mobile Sources

Cupitt¹,

Glen²,

Lewtas³

1994

Environmental Health Perspectives

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A major field study was conducted in Boise, Idaho, during the heating season of 1986 to 1987 as part of the Integrated Air Cancer Project. Filter samples were systematically collected in residences and in the ambient air across the community to characterize the particle-bound pollutants. The extractable organic matter (EOM) from the filter samples was apportioned to its source of origin, either residential wood combustion (RWC) or mobile sources (MS). Two composite samples, with apportioned contributions from RWC and MS, were prepared from the Boise ambient samples and tested for tumor-initiation potency. A comparative potency lung cancer risk estimate has been made based on the two ambient composite samples from this airshed. In addition, a microenvironmental exposure model was developed from the Boise data and from national survey data to estimate the exposure to EOM from RWC and MS. In this paper, the microenvironmental model is extrapolated to provide an estimate of the average annual exposure and dose in Boise to EOM from RWC and MS. The annual model considers actual pollutant levels in Boise, historical changes in RWC usage and meteorological dilution factors and the likely activities in the various microenvironmental zones and their resultant inhalation rates. Combined with the lifetime risk estimates, the average annual dose suggests a risk of about 4 x 10 4 based upon the composite ambient samples. Despite the fact that RWC accounts for 73% of the EOM on an annual average basis, it accounts for only about 20% of the estimated lifetime risk.-Environ Health Perspect 102(Suppl 4): 75-84 (1994).

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Sources of fine particle lead, bromine, and elemental carbon in southeastern Australia

Liu

Hopke

Cohen

et al. 1995

Science of The Total Environment

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Identification of volatile hydrocarbons as mobile source tracers for fine-particulate organics

Cited by 8 publications

References 10 publications

Applying Receptor Models To Analyze Urban/Suburban VOCs Air Quality in Martorell (Spain)

Applying Receptor Models To Analyze Urban/Suburban VOCs Air Quality in Martorell (Spain)

Exposure and Risk from Ambient Particle-Bound Pollution in an Airshed Dominated by Residential Wood Combustion and Mobile Sources

Sources of fine particle lead, bromine, and elemental carbon in southeastern Australia

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