Mapping the geospatial distribution of atmospheric BTEX compounds using portable mass spectrometry and adaptive whole air sampling
| Autor: | Erik T. Krogh, Ryan J. Bell, Nicholas G. Davey, Chris G. Gill |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Atmospheric Science
Adaptive sampling 010504 meteorology & atmospheric sciences Instrumentation Air sampling apparatus BTEX 010501 environmental sciences Mass spectrometry 01 natural sciences Ethylbenzene Membrane introduction mass spectrometry (MIMS) chemistry.chemical_compound Environmental monitoring Waste Management and Disposal 0105 earth and related environmental sciences Continuous monitoring Sampling (statistics) Pollution Hydrocarbons chemistry 13. Climate action Environmental chemistry Environmental science Air--Pollution |
| Zdroj: | Atmospheric Pollution Research. 11:545-553 |
| ISSN: | 1309-1042 |
| DOI: | 10.1016/j.apr.2019.12.003 |
| Popis: | This document is an accepted manuscript of a published work that after revisions following peer review and technical editing by the publisher appeared in final form as: Davey, N.G., Bell, R.J., Gill, C.G, & Krogh, E.T. (2020). Mapping the geospatial distribution of atmospheric BTEX compounds using portable mass spectrometry and adaptive whole air sampling. Atmospheric Pollution Research, 11(3), 545-553. https://doi.org/10.1016/j.apr.2019.12.003 Atmospheric environmental monitoring with mobile laboratories is becoming more common as instrumentation evolves and the benefits of taking the lab-to-sample are realized. One of the benefits of this approach is the ability to screen a geographic area for compounds of interest and to use ‘real-time’ data to inform adaptive sampling. We report on the use of a membrane introduction mass spectrometer (MIMS) for continuous monitoring of atmospheric volatile organic compounds (VOCs) associated with hydrocarbon upgrading and refining facilities in northern Alberta, Canada. Field campaigns involved continuous ambient-air sampling from a moving vehicle (collected at ~ 1Hz). Real-time MIMS data were used to monitor chemical concentrations of benzene, toluene, and ethylbenzene/xylene/s (BTEX) and to prompt collection whole air sample (WAS) canisters for laboratory-based, trace-level VOC speciation and quantitation. The MIMS data showed a high degree of spatiotemporal variability, which allowed for near real-time feedback to guide otherwise subjective or random collection of whole air samples. Laboratory based comparisons using lab constructed air samples showed the percent difference in quantitation between MIMS and WAS to be within 20% across targeted analytes in the low ppbv concentration range. Research was supported by the Natural Science and Engineering Research Council of Canada (NSERC) Discovery Grant Program funding (RGPGP- 2011-298325, RGPIN-2016-06454). Post-print version https://viurrspace.ca/bitstream/handle/10613/25759/GillKrogh2020APR.pdf?sequence=4 |
| Databáze: | OpenAIRE |
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