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Environments 2017, 4(4), 87; doi:10.3390/environments4040087

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

Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, Memphis, TN 38152, USA
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Received: 28 October 2017 / Revised: 23 November 2017 / Accepted: 2 December 2017 / Published: 5 December 2017
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Abstract

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 (UReff) 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 (URideal) and UReff. 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 UReff can be modeled with retention volumes or boiling points (BPs) and the biases were within ±20%. The α for 7-day UReff can be estimated by the model: α = 0.3626 Ln(BP) − 1.2324. The 8-h and 7-day UReff 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. View Full-Text
Keywords: uptake rate; passive sampling; volatile organic compound; thermal desorption; sorbent tube uptake rate; passive sampling; volatile organic compound; thermal desorption; sorbent tube
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Jia, C.; Fu, X. Diffusive Uptake Rates of Volatile Organic Compounds on Standard ATD Tubes for Environmental and Workplace Applications. Environments 2017, 4, 87.

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