Involvement with FIREX-AQ
View from Lewiston Hill (Lewiston, Idaho) on a clear vs smoky day during 2018 fire season. Above, Snake and Clearwater Rivers are visible. Below, visibility is very limited.
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LCSC's air group participated in the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) project during the summer of 2019. This project is a NOAA/NASA led mission that studied the impacts of wildfire smoke on air quality, chemistry and human health.
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During the study, LCSC had five field sites set up to measure daily to weekly averaged VOC composition and concentrations. The sites were in Spokane, WA, Boise, McCall and Lewiston, ID, and Missoula, MT. Collaborators included the Idaho Department of Environmental Quality (IDEQ), University of Washington, Washington State University and the University of Montana.
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In addition to field sites, LCSC assisted with some mobile laboratory measurements by NASA Langley and Aerodyne.
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For more information on FIREX-AQ :
Primary Methods during FIREX-AQ:
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Volatile organic compounds (VOCs) using sorbent tube sampling and TD-GC-MS analysis (thermal desorption-gas chromatography-mass spectrometry)
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Markes UNITY 2​/Agilent 7820/5977
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Sulfur Monitoring (SO2 and TRS) using Fluorescence Spectroscopy
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Teledyne T102
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Compounds Quantified during FIREX-AQ:
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VOCs (Volatile Organic Compounds)​
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Dichlorodifluoromethane
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Ethane, 1,2-dicholoro-1,1,2,2-tetrafluoro
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Ethene, chloro
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Ethyl Chloride
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Trichloromonofluoromethane
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Ethene, 1,1-dichloro
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Dimethyl Sulfide
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Carbon disulfide
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Methylene Chloride
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Ethylene, 1,2-dichloro (E), trans
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n-Hexane
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Ethane, 1,1-dichloro
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Ethylene, 1,2-dichloro (Z), cis
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Trichloromethane
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Ethane, 1,1,1-trichloro
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Cyclohexane
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Carbon Tetrachloride
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Ethane, 1,2-dichloro
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Benzene
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Heptane
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Trichloroethylene
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Propane, 1,2-dichloro
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1,4-Dioxane
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Methane, bromodichloro
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Ethane, 1-bromo-2-chloro
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1-Propene, 1,3-dichloro
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Methyl Isobutyl Ketone
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Dimethyl Disulfide
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Toluene
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1-Propene, 2,3-dichloro
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Ethane, 1,1,2-trichloro
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2-Hexanone
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Tetrachloroethylene
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Methane, dibromochloro
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Ethane, 1,2-dibromo
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Benzene, chloro
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Ethylbenzene
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m,p-Xylene
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o-Xylene
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Methane, tribromo
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Ethane, 1,1,2,2-tetrachloro
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Benzene, 1-ethyl-4-methyl
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Mesitylene
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Benzene, 1,2,4-trimethyl
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Benzene, 1,3-dichloro
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Benzene, 1,2-dichloro
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Benzyl chloride
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Benzene, 1,4-dichloro
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Benzene, 1,2,4-trichloro
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1,3-Butadiene, 1,1,2,3,4,4-hexachloro
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Hydrocarbons
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1-Butene
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2-Butene (Z), cis
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2-Butene (E), trans
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Butane, 2-methyl
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1-Pentene
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2-Pentene (Z), cis
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1,3-Butadiene, 2-methyl
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Butane, 2,2-dimethyl
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Pentane, 2-methyl
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Pentane, 3-methyl
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1-Hexene
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Pentane, 2,4-dimethyl
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Cyclopentane, methyl
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Hexane, 2-methyl
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Hexane, 3-methyl
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Cyclohexane, methyl
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Pentane, 2,3,4-trimethyl
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Heptane, 2-methyl
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Heptane, 3-methyl
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Octane
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Nonane
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Benzene, (1-methylethyl)
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Benzene, propyl
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Benzene, 1-ethyl-3-methyl
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Benzene, 1-ethyl-2-methyl
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Decane
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Benzene, 1,2,3-trimethyl
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Benzene, 1,3-diethyl
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Benzene, 1,4-diethyl
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Undecane
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Dodecane
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Terpenes​​/Alcohols
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alpha-Pinene
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Sabinene
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beta.-Pinene
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D-Limonene
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gamma.-Terpinene
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Phenol
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Terpinolene
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Sabinene hydrate
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L-Fenchone
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Fenchol
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Camphor
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Borneol
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aTerpineol
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Geraniol
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Pulegone​
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alpha-Cedrene
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Catechol
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Syringol
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Guaiacol
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Phenol
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