The UK hydrocarbon monitoring network

Hester, R. E.; Harrison, R.; Dollard, G. J.; Davies, Trevor J.; Jones, Brian M.; Nason, Peter; Chandler, J.M.; Dumitrean, P.; Delaney, Michael F.; Watkins, D.R.; Field, Robert A.

doi:10.1039/9781847552310-00037

Cited by 12 publications

(2 citation statements)

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“…The output data from the OPA were processed and validated with a data management system provided by Ricardo-AEA, Ltd., UK. This system, used by the UK Automatic Hydrocarbon Network for more than 20 years (Dollard et al, 1995), analyzes batches of multiple chromatograms to yield an output file containing compiled time-stamped validated data that include peak areas, widths, and retention times, for identified chromatogram eluents in each analyzed sample (Dernie and Dumitrean, 2013). Initialization of the processing software requires template calibration information that provides comparator data for the input chromatograms, which in this study were grouped into 1-month-long periods.…”

Section: Data Processingmentioning

confidence: 99%

Influence of oil and gas field operations on spatial and temporal distributions of atmospheric non-methane hydrocarbons and their effect on ozone formation in winter

et al. 2015

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Abstract. Emissions from oil and natural gas development during winter in the Upper Green River basin of Wyoming are known to drive episodic ozone (O3) production. Contrasting O3 distributions were observed in the winters of 2011 and 2012, with numerous episodes (hourly O3 ≥ 85 ppbv) in 2011 compared to none in 2012. The lack of O3 episodes in 2012 coincided with a reduction in measured ambient levels of total non-methane hydrocarbons (NMHC). Measurements of speciated NMHC, and other air quality parameters, were performed to better understand emission sources and to determine which compounds are most active in promoting O3 formation. Positive matrix factorization (PMF) analyses of the data were carried out to help achieve these goals. PMF analyses revealed three contributing factors that were identified with different emission source types: factor 1, combustion/traffic; factor 2, fugitive natural gas; and factor 3, fugitive condensate. Compositional signatures of the three contributing factors were identified through comparison with independently derived emission source profiles. Fugitive emissions of natural gas and of condensate were the two principal emission source types for NMHC. A water treatment and recycling facility was found to be a significant source of NMHC that are abundant in condensate, in particular toluene and m+p-xylene. Emissions from water treatment have an influence upon peak O3 mixing ratios at downwind measurement sites.

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Section: Data Processingmentioning

confidence: 99%

Influence of oil and gas field operations on spatial and temporal distributions of atmospheric non-methane hydrocarbons and their effect on ozone formation in winter

et al. 2015

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“…In urban areas, motor vehicles represent one of the main sources of hydrocarbon emissions (Broderick & Marnane, 2002). As a result, various programmes and measuring campaigns have been initiated in recent years to provide information on NMHC concentrations, their sources and behaviour (Barletta et al, 2002;Batterman, Peng, & Braun, 2002;Broderick & Marnane, 2002;Dollard et al, 1995;Kourtidis et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

C2-C6 Background Hydrocarbon Concentrations Monitored at a Roof Top and Green Park Site, in Dublin City Centre

O’Donoghue

Broderick

2006

Environ Monit Assess

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A 5 week monitoring campaign was carried out in Dublin City centre, to establish which site gave a more accurate background city centre estimation: a roof-top or green field site. This background represented a conservative estimate of HC exposure in Dublin City centre, useful for quantifying health effects related to this form of pollution and also for establishing a local background relative to the four surrounding main roads when the wind direction is travelling towards each road with the background receptor upwind. Over the entire monitoring campaign, the lowest concentrations and relative standard deviations were observed at the green field site, regardless of time of day or meteorological effects.

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Determination of complex mixtures of volatile organic compounds in ambient air: canister methodology

Wang

Austin

2006

Anal Bioanal Chem

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Canister methodology is applicable to 150 polar and nonpolar VOCs found in ambient air from parts-per-billion by volume (ppbv) to parts-per-million (ppmv) levels, and has been validated at parts-per-trillion (pptv) levels for a subset of these analytes. This article is a detailed review of techniques related to the collection of volatile organic compounds (VOCs) in evacuated Summa and fused-silica-lined canisters, and their analysis by gas chromatography/mass spectrometry (GC/MS). Emphasis is placed on canister cleaning, VOC stability in canisters, sample dilution, water management, and VOC cryogenic and sorbent preconcentration methods. A wide range of VOC preconcentration and water management methods are identified from the literature, and their relative merits and disadvantages are discussed. Examples of difficulties that commonly arise when processing canister samples are illustrated, and solutions to these problems are provided.

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The UK hydrocarbon monitoring network

Cited by 12 publications

References 0 publications

Influence of oil and gas field operations on spatial and temporal distributions of atmospheric non-methane hydrocarbons and their effect on ozone formation in winter

Influence of oil and gas field operations on spatial and temporal distributions of atmospheric non-methane hydrocarbons and their effect on ozone formation in winter

C2-C6 Background Hydrocarbon Concentrations Monitored at a Roof Top and Green Park Site, in Dublin City Centre

Determination of complex mixtures of volatile organic compounds in ambient air: canister methodology

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