Long term diffusive sampling of volatile organic compounds in indoor air

Brown, Veronica M.; Crump, Derrick; Gardiner, Derek J.; Yu, Chuck Wah

doi:10.1080/09593339309385348

Cited by 44 publications

(32 citation statements)

References 3 publications

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“…These parameters agree with those listed in a previous study [15]. The standard tubes are commercially available from a number of vendors, e.g., …”

Section: Standard Atd Tubessupporting

confidence: 73%

“…These parameters agree with those listed in a previous study [15]. The key is to determine α for any given exposure duration, e.g., 8 h or 7 days.…”

Section: Standard Atd Tubessupporting

confidence: 67%

“…The retaining gaze has a pore size of 80 mesh and the wire is 0.21 mm in diameter, giving an effective area of 46% of the full area by calculation. Previous studies [15,18] assumed full cross-sectional diffusion area without considering the effective area on the retaining gauze. This assumption is questionable; however, it does not impact the determination of UR eff , since UR eff is not determined directly from the tube geometry, rather, by experiments or modelling as presented later.…”

Section: Standard Atd Tubesmentioning

confidence: 99%

“…ATD tubes offer the greatest flexibility for users to select sorbents and determine tube configuration but at the same time, add complexity to the UR determination. Many studies have determined URs from the diffusion theory [12], in laboratory chambers [13][14][15][16] and by comparing active and passive sampling in the field [17,18]. Many factors influence URs, including sorbent selection, tube configuration, exposure duration and environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

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Diffusive Uptake Rates of Volatile Organic Compounds on Standard ATD Tubes for Environmental and Workplace Applications

Jia

2017

Environments

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Passive sampling for airborne volatile organic compounds (VOCs) has gained popularity; however, diffusive uptake rates (URs) have been experimentally determined for only a small subset of VOCs. This study aims to develop empirical models that can interpolate effective URs (UR eff ) for a wide range of VOCs. The modelling was based on the standard automated thermal desorption (ATD) tubes packed with Tenax TA and targeted the sampling efficiency (α), defined as the ratio between the ideal UR (UR ideal ) and UR eff . Available experimentally determined URs were compiled from literature. Method detection limits were determined on a thermal desorption-gas chromatography/mass spectrometry (TD-GC/MS) system. The 8-h UR eff can be modeled with retention volumes or boiling points (BPs) and the biases were within ±20%. The α for 7-day UR eff can be estimated by the model: α = 0.3626 Ln(BP) − 1.2324. The 8-h and 7-day UR eff values were then compiled for 75 VOCs commonly encountered in the environmental and occupational settings. The TD analytical method showed high precision, linearity and sensitivity, suitable for measuring indoor and outdoor VOCs. The approach and data presented here are anticipated to ease passive monitoring of VOCs for the general users.

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“…These parameters agree with those listed in a previous study [15]. The standard tubes are commercially available from a number of vendors, e.g., …”

Section: Standard Atd Tubessupporting

confidence: 73%

“…These parameters agree with those listed in a previous study [15]. The key is to determine α for any given exposure duration, e.g., 8 h or 7 days.…”

Section: Standard Atd Tubessupporting

confidence: 67%

Section: Standard Atd Tubesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diffusive Uptake Rates of Volatile Organic Compounds on Standard ATD Tubes for Environmental and Workplace Applications

Jia

2017

Environments

View full text Add to dashboard Cite

show abstract

“…The number of studies on the occurrence of various volatile organic compounds (VOCs) in indoor air has increased in recent years (Miksch et al, 1982;Mùlhave, 1982;Girman et al, 1986;Lebret et al, 1986;Seifert et al, 1989;Krause et al, 1991;Brown et al, 1993;Crump and Madany, 1993;Fellin and Otson, 1993;Schreiber et al, 1993;Heavner et al, 1995Heavner et al, , 1996 . Although people tend to spend most of their time indoors, indoor VOC concentrations do not necessarily reflect personal exposure adequately.…”

Section: Introductionmentioning

confidence: 99%