Table 2 Mean annual PM25 and aerosol concentrations in six regions of Thailand and Bangkok between 2012–2021.
Regions of Thailand | Annual aerosol concentration, mean ± SD (µg/m3) | |||||
|---|---|---|---|---|---|---|
PM2.5 | Organic carbon | Black carbon | Dust | Sulfate | Sea salt | |
Northern | 18.73 ± 2.28 | 8.89 ± 1.72 | 1.01 ± 0.12 | 2.92 ± 0.73 | 3.53 ± 0.34 | 1.06 ± 0.16 |
Central: Bangkok included | 19.82 ± 1.47 | 7.94 ± 0.84 | 1.59 ± 0.08 | 2.31 ± 0.57 | 3.99 ± 0.43 | 2.49 ± 0.32 |
Central: Bangkok not included | 19.77 ± 1.46 | 7.96 ± 0.85 | 1.60 ± 0.08 | 2.32 ± 0.57 | 3.98 ± 0.43 | 2.41 ± 0.32 |
Northeastern | 18.61 ± 1.29 | 7.61 ± 0.89 | 1.19 ± 0.07 | 2.26 ± 0.58 | 4.36 ± 0.43 | 1.56 ± 0.17 |
Southern | 13.55 ± 1.15 | 3.06 ± 0.69 | 0.54 ± 0.07 | 1.34 ± 0.37 | 1.57 ± 0.14 | 6.46 ± 0.52 |
Eastern | 17.62 ± 1.17 | 6.18 ± 0.67 | 0.94 ± 0.07 | 1.79 ± 0.48 | 3.34 ± 0.36 | 4.12 ± 0.33 |
Western | 17.54 ± 1.34 | 6.61 ± 0.81 | 1.17 ± 0.07 | 2.18 ± 0.52 | 3.20 ± 0.35 | 3.20 ± 0.37 |
Bangkok | 20.83 ± 1.52 | 7.37 ± 0.77 | 1.51 ± 0.09 | 2.00 ± 0.50 | 4.08 ± 0.47 | 4.35 ± 0.48 |
