. Author manuscript; available in PMC: 2023 Jul 20.

Published in final edited form as: Atmos Chem Phys. 2022 Nov 2;22(21):14037–14058. doi: 10.5194/acp-22-14037-2022

Table 1.

Abundance (ppbv) of major volatile organic compounds (VOCs) measured at Toolik Field Station (TFS) in early summer 2019. Data have been filtered for stagnant air and local pollution influences from the field station (see text). An extended table containing the full mass spectrum of all identified PTR-ToF masses is provided in Table S1.

Measured mass (m/z)	Empirical formula	Assigned compound	Mean ± 1σ (ppbv)	Median (ppbv)	Max (ppbv)
31.018	(CH₂O)H⁺	Formaldehyde	0.84 ± 0.20	0.74	3.02
33.033	(CH₄O)H⁺	Methanol	3.13 ± 1.50	2.88	8.87
45.033	(C2H₄O)H⁺	Acetaldehyde	0.25 ± 0.15	0.20	0.87
47.013	(CH₂O₂)H⁺	Formic acid	0.50 ± 0.63	0.31	3.71
59.049	(C₃H₆O)H⁺	Acetone	1.11 ± 0.31	1.08	2.09
61.028	(C₂H₄O₂)H⁺	Acetic acid	0.28 ± 0.40	0.17	2.20
69.070	(C₅H₈)H⁺	Isoprene	0.06 ± 0.08	0.03	0.54
71.049	(C₄H₆O)H⁺	Methacrolein and methyl vinyl ketone	0.06 ± 0.08	0.03	0.45