Diffusive uptake rates for passive air sampling: Application to volatile organic compound exposure during FIREX-AQ campaign

Miller, Dylan D.; Bajracharya, Aakriti; Dickinson, Gabrielle N.; Durbin, Timbre A.; McGarry, John K.; Moser, Elijah P.; Nuñez, Laurel A.; Pukkila, Elias J.; Scott, Phillip S.; Sutton, Parke J.; Johnston, Nancy A.C.

doi:10.1016/j.chemosphere.2021.131808

Cited by 13 publications

(10 citation statements)

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“…Benzene concentrations found were on average over 100 times higher than background, and similar trends of elevation were seen for toluene, ethylbenzene, and xylenes. For example, the average background concentration of benzene found in nearby McCall, ID was 0.044 ppbv during passive sampling taken during FIREX‐AQ (Miller et al., 2022 ). Benzene ranged from the background to 25 ppbv (the ULOD) with a mean of about 4 ppbv.…”

Section: Resultsmentioning

confidence: 99%

“…Duplicates and field blanks were taken to account for any variability or shipping contamination. Passive samples (7‐day averaging) taken at stationary sites served as background concentrations for compounds investigated for health risk (Miller et al., 2022 ). These diffusive samples collected ambient air for one week to one month during time periods of minimal to no wildfire influence in the following areas: McCall, Moscow, Lewiston, and Boise, ID, as well as Spokane, WA and Missoula, MT (Chandra et al., 2020 ; Miller et al., 2022 ; NASA, 2020 ).…”

Section: Methodsmentioning

confidence: 99%

“…More in‐depth details on this background data set can be found in Miller et al. ( 2022) . Details about fires sampled are found in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…The background sampling sites chosen to correlate to each fire were those into the closest proximity. The Nethker Fire background was established via a site in McCall, ID, Chief Timothy and Whitetail Loop via a site in Lewiston, ID, and Williams Flats via a site in Spokane, WA (Miller et al., 2022 ; NASA, 2020 ). ProUCL 5.1 (2016) software was also used to generate Kaplan‐Meier statistics using non‐detect values.…”

Section: Methodsmentioning

confidence: 99%

“…In this assessment, the HI included benzene, ethylbenzene, hexane, xylenes, and toluene for each wildfire. FIREX-AQ (Miller et al, 2022). Benzene ranged from the background to 25 ppbv (the ULOD) with a mean of about 4 ppbv.…”

Section: Health-risk Assessmentmentioning

confidence: 99%

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Health Risk Implications of Volatile Organic Compounds in Wildfire Smoke During the 2019 FIREX‐AQ Campaign and Beyond

et al. 2022

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Fire Influence on Regional to Global Environments and Air Quality was a NOAA/NASA collaborative campaign conducted during the summer of 2019. The objectives included identifying and quantifying wildfire composition, smoke evolution, and climate and health impacts of wildfires and agricultural fires in the United States. Ground based mobile sampling via sorbent tubes occurred at the Nethker and Williams Flats fires (2019) and Chief Timothy and Whitetail Loop fires (2020) in Idaho and Washington. Air samples were analyzed through thermal desorption‐gas chromatography‐mass spectrometry for a variety of volatile organic compounds to elucidate both composition and health impacts. Benzene, toluene, ethylbenzene, xylenes, butenes, phenol, isoprene and pinenes were observed in the wildfire smoke, with benzene ranging from 0.04 to 25 ppbv. Health risk was assessed for each fire by determining sub‐chronic (wildfire event) and projected chronic inhalation risk exposure from benzene, a carcinogen, as well as other non‐carcinogenic compounds including toluene, ethylbenzene, xylenes, and hexane. The cancer risk of benzene from sub‐chronic exposure was 1 extra cancer per million people and ranged from 1 to 19 extra cancers per million people for the projected chronic scenarios, compared to a background level of 1 extra cancer per million people. The hazard index of non‐carcinogenic compounds was less than one for all scenarios and wildfires sampled, which was considered low risk for non‐cancer health events.

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Section: Resultsmentioning

confidence: 99%