Yearly average mass concentration of elements of PM_2.5 (unit: Lg/m³)

Element

Brisbane, Australia^a

Gent, Belgium^b

Lisbon,

Portugal^c

Birmingham,

UK^d

Bangkok, Thailand^e

Beijing, China^f

Fe

198

240

470

187

891

1344

K

78

97

376

71.5

471

2583

Mn

3.85

8.1

7.06

6.40

22.5

110.6