Local and regional sources of C2–C8 hydrocarbon concentrations at a sub-urban motorway site (M4) in Ireland

O’Donoghue, R.T.; Broderick, Brian

doi:10.1007/s10661-008-0414-3

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…This was demonstrated in a roadway study showing that the levels of propylene declined from 0.72 ppbv at a distance of 13 m from a busy eight lane highway to 0.38 ppbv at a distance of 95 m [ 68 ]. The levels of propylene near heavily traveled highways may also be dramatically influenced by local meteorological conditions, especially wind speed and wind direction which can cause a 2-fold fluctuation in hourly propylene levels [ 69 ]. Taken together, these studies indicate that atmospheric dilution will influence the spatial and temporal variations in propylene concentration, especially in an urban environment where high traffic densities exist.…”

Section: Emission Sourcesmentioning

confidence: 99%

The Human Exposure Potential from Propylene Releases to the Environment

Morgott¹

2018

IJERPH

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A detailed literature search was performed to assess the sources, magnitudes and extent of human inhalation exposure to propylene. Exposure evaluations were performed at both the community and occupational levels for those living or working in different environments. The results revealed a multitude of pyrogenic, biogenic and anthropogenic emission sources. Pyrogenic sources, including biomass burning and fossil fuel combustion, appear to be the primary contributors to atmospheric propylene. Despite a very short atmospheric lifetime, measurable levels could be detected in highly remote locations as a result of biogenic release. The indoor/outdoor ratio for propylene has been shown to range from about 2 to 3 in non-smoking homes, which indicates that residential sources may be the largest contributor to the overall exposure for those not occupationally exposed. In homes where smoking takes place, the levels may be up to thirty times higher than non-smoking residences. Atmospheric levels in most rural regions are typically below 2 ppbv, whereas the values in urban levels are much more variable ranging as high as 10 ppbv. Somewhat elevated propylene exposures may also occur in the workplace; especially for firefighters or refinery plant operators who may encounter levels up to about 10 ppmv.

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Section: Emission Sourcesmentioning

confidence: 99%

The Human Exposure Potential from Propylene Releases to the Environment

Morgott¹

2018

IJERPH

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Baseline measurements of ethene in 2002: Implications for increased ethanol use and biomass burning on air quality and ecosystems

Gaffney¹,

Marley²,

Blake³

2012

Atmospheric Environment

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While it is well known that combustion of ethanol as a biofuel will lead to enhanced emissions of methane, ethene (ethylene), acetaldehyde, formaldehyde, and oxides of nitrogen (primarily NO) when compared to gasoline alone, especially during cold starts or if catalytic converters are not operating properly, the impacts of increases in atmospheric ethene levels from combustion of fuels with higher ethanol content has not received much attention. Ethene is a well known and potent plant growth hormone and exposure to agricultural crops and natural vegetation results in yield reductions especially when combined with higher levels of PAN and ozone also expected from the increased use of ethanol/ gasoline blends. We report here some baseline measurements of ethene obtained in 2002 in the southwestern and south central United States. These data indicate that current ethene background levels are less than 1 ppb. Anticipated increases in fuel ethanol content of E30 or greater is expected to lead to higher atmospheric levels of ethene on regional scales due to its atmospheric lifetime of 1.5e3 days. These background measurements are discussed in light of the potential enhancement of ethene levels expected from the anticipated increases in ethanol use as a renewable biofuel.

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An investigation into the role of VOCs in SOA and ozone production in Beijing, China

et al. 2020

Science of The Total Environment

160

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Local and regional sources of C2–C8 hydrocarbon concentrations at a sub-urban motorway site (M4) in Ireland

Cited by 4 publications

References 30 publications

The Human Exposure Potential from Propylene Releases to the Environment

The Human Exposure Potential from Propylene Releases to the Environment

Baseline measurements of ethene in 2002: Implications for increased ethanol use and biomass burning on air quality and ecosystems

An investigation into the role of VOCs in SOA and ozone production in Beijing, China

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