Testing a high volume air sampler for quantitative collection of polycyclic aromatic hydrocarbons

König, J.; Funcke, Werner; Balfanz, E.; Grosch, B.; Pott, F.

doi:10.1016/0004-6981(80)90094-3

Cited by 54 publications

(15 citation statements)

References 7 publications

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“…Coarse particles were collected on 62 mm × 165 mm heat‐treated quartz‐fiber filters and backed by an identical filter in the dichot. Backing filters were installed to account for the condensing of semivolatile compounds on the filter substrate [ Cadle et al , 1983; McDow and Huntzicker , 1990; Fitz , 1990] and for particles from the front filter that may have become volatilized or reentrained and then redeposited on the back filter [ König et al , 1980; Eatough et al , 1990]. Prior to traveling to the sampling location, filters were preweighed and packaged in envelopes of aluminum foil.…”

Section: Methodsmentioning

confidence: 99%

Black carbon and organic carbon in aerosol particles from crown fires in the Canadian boreal forest

Conny

Slater

2002

J. Geophys. Res.

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[1] In the boreal forest, high-intensity crown fires account for an overwhelming proportion of the area burned yearly. Quantifying the amount of black carbon (BC) from boreal crown fires in Canada is essential for assessing the effect on regional climate from natural wildfire aerosol emissions versus that from anthropogenic activities. This is particularly relevant because climate change will likely lead to increased wildfire activity in northern Canada. During 4 -5 July 1998, two controlled fires in Northwest Territories, Canada, were conducted as part of the International Crown Fire Modeling Experiment. We report here the BC and organic carbon (OC) compositions of aerosols produced during the flaming and smoldering stages of burning. Particles were collected on back-to-back quartz-fiber filters by helicopter with a hi-vol sampler and at ground level with a dichotomous sampler to separate the fine ( 2.5 mm diameter) and coarse (2.5 -10 mm diameter) particle fractions. An analysis of the back filter in relation to the front filter from the dichot sampler for both the fine and coarse fractions provided a means to correct for the adsorption of gas-phase organic compounds on filters (positive artifact) and for the loss of particulate carbon from filters by volatilization (negative artifact). BC and OC masses, which combine here to give total carbon (TC), were determined by the thermal-optical method. The BC to TC ratio for the flaming stage was 0.085 ± 0.032 (x ± ksn À1/2 , k = 2, n = 2), based on aerial sampling of the dark plume 300 -500 m above the flame front. BC/TC for the smoldering stage was 0.0087 ± 0.0046 from ground-based sampling. Uncertainties consist of the combined variances in measurement and sampling and in emissions from different fires. These averages and uncertainties serve as important aerosol data input for predictions of climate change on both global and regional scales.

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Section: Methodsmentioning

confidence: 99%

Black carbon and organic carbon in aerosol particles from crown fires in the Canadian boreal forest

Conny

Slater

2002

J. Geophys. Res.

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“…The simple fact that SOCs on filtered particles are capable of being desorbed to the gas phase when clean air or nitrogen is passed through a loaded glass fiber filter (GFF) is well established (6,(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). Several researchers have therefore proposed that the filter should be replaced frequently during a given sampling event (13,15,16) that collected particles will only be exposed to the concentration and temperature conditions under which they were initially filtered.…”

Section: Introductionmentioning

confidence: 99%

High-Volume Air Sampler for Particle and Gas Sampling.2.Use of Backup Filters To Correct for the Adsorption of Gas-Phase Polycyclic Aromatic Hydrocarbons to the Front Filter

Hart¹,

Pankow²

1994

Environ. Sci. Technol.

124

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“…Sampling times of 12 h or more are usually necessary to collect enough SOC for analysis. During the collection period, SOC concentrations and especially ambient temperatures are likely to change, resulting in blow-off losses from or adsorption gains to the particle load on the filter (4)(5)(6)(7)(8)(9)(10). Other factors that may affect A/F are variations in particulate matter, including size distribution, surface area, and content of carbonaceous of degradative losses, for example, in reactions of PAH with 03 and NO* (11)(12)(13)(14)(15)(16).…”

Section: Introductionmentioning

confidence: 99%

An experimental system for investigating vapor-particle partitioning of trace organic pollutants

Foreman¹,

Bidleman²

1987

Environ. Sci. Technol.

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Testing a high volume air sampler for quantitative collection of polycyclic aromatic hydrocarbons

Cited by 54 publications

References 7 publications

Black carbon and organic carbon in aerosol particles from crown fires in the Canadian boreal forest

Black carbon and organic carbon in aerosol particles from crown fires in the Canadian boreal forest

High-Volume Air Sampler for Particle and Gas Sampling.2.Use of Backup Filters To Correct for the Adsorption of Gas-Phase Polycyclic Aromatic Hydrocarbons to the Front Filter

An experimental system for investigating vapor-particle partitioning of trace organic pollutants

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