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

Table 3

Comparison of formaldehyde, acetaldehyde, and acetone concentrations at various observation sites in China and other countries (ppbV).

Location	FA	AA	AC	C1/C2	Period	References
Jinan	3.94	1.71	2.60	2.64	July 2018	This study
	2.51	1.28	1.88	2.03	July 2020
Beijing	11.17	5.27	6.98	2.12	July-August 2008	[23]
Shanghai	4.71	1.71	6.10	2.75	July-August 2014	[27]
Guangzhou	6.93	4.31	4.18	1.12	July 2016	[12]
Hong Kong	1.70	0.60	—	2.83	June-August 2013	[28]
Guiyang	4.80	5.70	5.10	0.84	September 2008	[29]
Xi’an	6.47	2.06	2.80	1.35	July 2009	[17]
Mount Tai	3.48	1.27	3.57	2.74	July-August 2014	[26]
Zhangjiajie Forest Park	3.22	0.48	1.16	6.71	August 2014	[30]
Orléans, France	3.08	1.04	2.00	2.96	June 2011	[15]
Madrid, Spain	0.64	1.01	2.11	0.63	October 2010	[24]
Rio de Janeiro, Brazil	14.69	38.71	—	0.38	July-October 2013	[31]

FA: formaldehyde; AA: acetaldehyde; AC: acetone (AC); C₁/C₂: formaldehyde/acetaldehyde.