Pollution Characteristics of Atmospheric Carbonyl Compounds in a Large City of Northern China

Table 5

MIR and K^OH values of carbonyl compounds.

Compound	MIR (g O3/g VOCS)	K^OH 10^12 (cm^3/(molecule·s))	OFP (μg·m^−3)		LOH (s^−1)
			2018	2020	2018	2020
Formaldehyde	9.46	9.37	45.64	57.58	1.09	1.15
Acetaldehyde	6.54	15.00	20.08	18.73	0.63	0.59
Acetone	0.36	0.17	2.22	0.7	0.01	0.003
Butyraldehyde	5.28	24.00	9.62	5.46	0.37	0.21
Crotonaldehyde	—	—
Isovaleraldehyde	4.42	27.00	2.02	—	0.13	—
Propionaldehyde	7.08	20.00	7.88	7.52	0.23	0.22
o-Tolualdehyde	—	18.00	—	—	0.12	0.06
m-Tolualdehyde	—	17.00	—	—	0.05	0.08
p-Tolualdehyde	—	—
Valeraldehyde	4.42	28.00	2.94	2.55	0.13	0.11
Hexaldehyde	3.79	9.58	1.7	1.15	0.03	0.02
Benzaldehyde	−0.57	12.00	−0.61	−0.25	0.07	0.03
Acrolein	7.45	—	—	0.57	—	—
Dimethylbenzaldehyde	—	—	—	—	—	—