Ambient Volatile Organic Compound Monitoring by Diffusive Sampling. Compatibility of High Uptake Rate Samplers With Thermal Desorption†

Gonzalez-Flesca, Norbert; Bates, Matthew S.; Sokhi, Ranjeet S.; Cocheo, Vincenzo

doi:10.1039/a705610i

Cited by 32 publications

(18 citation statements)

References 17 publications

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“…This is why, after a certain sampling time, lower boiling species not only stop being enriched but are even back-flushed from the system as a result of a 'reverse diffusion' mechanism, as previously reported in the literature [9]. …”

Section: Discussionmentioning

confidence: 75%

The internal consistency of the ‘analyst’ diffusive sampler—A long-term field test

2001

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SummaryA recently developed diffusive sampler, intended for use in long-term ambient measurements of volatile aromatic hydrocarbons, has been tested to determine the upper limits of its sampiing capacity. A test has been performed over 12-month period to evaluate these limits in terms of its 'internal consistency' (i.e. checking if the sum of the amounts of a given pollutant, determined over shorter consecutive periods, matches the amount determined from a single long-term exposure). Results demonstrate that the uptake rate of the device, in a real (indoor) atmosphere, is constant for approximately 8 months for benzene and for approximately 10 months for toluene. The upper limit for hig her homologous species was not reached after exposure for a year to typical ambient concentrations. This means the device can be successfully used for several months, thereby enabling low-cost determinations of ambient BTX concentrations.

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Section: Discussionmentioning

confidence: 75%

The internal consistency of the ‘analyst’ diffusive sampler—A long-term field test

2001

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“…This is an advantage since short-time measurements would assess the VOC exposure in a very small time window and are therefore not as representative as long-term passive measurements. The applicability of passive air sampling for VOCs assessment has been validated sufficiently in the literature [22][23][24][25][26].…”

Section: Samplingmentioning

confidence: 99%

Long-Term Trend of Indoor Volatile Organic Compounds – a 15-Year Follow-Up Considering Real Living Conditions

Herbarth¹,

Matysik

2012

Indoor and Built Environment

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Indoor volatile organic compounds (VOCs) may be associated with adverse health effects. The aim of this study was to investigate whether the indoor VOCs exposure burden has undergone changes during a past 15-year period, exemplarily in a German city. The study was limited to homes with families. To avoid possible regional-specific confounder effects, this assessment was conducted for this urban centre with a sufficiently long and continuous time series (1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008).VOCs were determined using passive sampling over 4 weeks followed by liquid extraction and analysis with gas chromatography-mass spectrometry. All measurement periods were equally distributed over the seasons and years.A substantial reduction in the total sum of VOCs and aromatics could be demonstrated as well as a trend of decrease concentrations for alkanes. No such changes could be observed for cycloalkanes, chlorinated hydrocarbons and terpenes group.Possible reasons for the reduction of indoor VOCs exposure are most likely due to the applied regulations/ guidelines for the VOCs reduction in indoor-relevant products. Problems are, however, regarding the slight increase in terpene exposure. These chemicals have been found to be associated with quite specific health effects. Therefore, future emphasis should be directed not only towards the general reduction of anthropogenically generated VOC exposures in the outdoor environment but also on the reduction of healthrelevant VOCs, especially indoors.

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“…It is commonly employed for monitoring organic pollutants in indoor air, e.g. at working places as well as in ambient air [12][13][14][15][16][17][18][19]. The analytical procedure includes the adsorption of PCBs from a suitable volume of air (usually in the range from hundreds to thousands liters) onto a solid phase, then the primary desorption takes place followed by the adsorption onto a cold trap.…”

Section: Introductionmentioning

confidence: 99%

Direct analysis of polychlorinated biphenyls in heavily contaminated soils by thermal desorption/gas chromatography/mass spectrometry

Mascolo

Bagnuolo

Tommaso

et al. 2013

International Journal of Environmental Analytical Chemistry

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Ambient Volatile Organic Compound Monitoring by Diffusive Sampling. Compatibility of High Uptake Rate Samplers With Thermal Desorption†

Cited by 32 publications

References 17 publications

The internal consistency of the ‘analyst’ diffusive sampler—A long-term field test

The internal consistency of the ‘analyst’ diffusive sampler—A long-term field test

Long-Term Trend of Indoor Volatile Organic Compounds – a 15-Year Follow-Up Considering Real Living Conditions

Direct analysis of polychlorinated biphenyls in heavily contaminated soils by thermal desorption/gas chromatography/mass spectrometry

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