Table 6. The distribution of major chemical components of PM_2.5 at the coastal sites around the Taiwan Strait and East China Sea.

Sampling Sites	Average Con.	SO42− (%)	NO3− (%)	NH4+ (%)	Organic Materials (%)	Crustal Materials (%)	Elemental Carbon (%)	Reference
Xiamen	59.2	18.8	10.2	8.1	21.4	21.3	4.3	This study (2015)
Fuzhou	53.6	15.0	9.8	7.8	23.8	26.4	3.7	This study (2015)
Penghu	23.6	16.4	9.0	3.6	19.6	32.9	4.5	This study (2015)
Kaohsiung	41.8	18.1	8.9	4.6	19.5	24.6	5.5	This study (2015)
Taichung	35.6	16.7	9.9	4.1	19.3	24.4	5.7	This study (2015)
Taipei	24.9	17.7	10.4	4.0	22.1	28.2	5.3	This study (2015)
4 Coastal Sites of Fujian Province, China	55.1	19.8	9.7	10.6	30.2	4.7	2.9	Wu et al.32
Xiamen	74.2	17.0	10.0	9.0	34.0	18.0	7.0	Cao et al.2
Shanghai	139.4	15.0	12.0	10.0	32.0	21.0	6.0	Cao et al.2
Qingdao	134.8	16.0	14.0	11.0	31.0	18.0	4.0	Cao et al.2
Hong Kong	88.4	24.0	11.0	8.0	25.0	18.0	7.0	Cao et al.2
Seoul, Korea	37.6	15.3	13.8	9.8	30.2	7.4	7.7	Heo et al.83
Yokohama, Japan	37.6	18.4	4.7	11.0	21.8	NA	9.4	Khan et al.63