Table 3.
The Pb isotope values in local or regional sources compare to the Singapore Strait water. Note the large difference in the Pb isotope of Singapore Strait water from all other sources in the region.
| sample | 206/207 | 208/207 | source |
|---|---|---|---|
| Singapore Strait water | 1.191–1.198 | 2.474–2.484 | this study |
| South China Sea water | 1.156 | 2.444 | Lee et al. [29] |
| Bay of Bengal water | 1.149 | 2.431 | Lee et al. [29] |
| Singapore aerosol | 1.137–1.159 | 2.412–2.441 | this study |
| Hong Kong aerosol | 1.149 | 2.440 | Bollhöfer & Rosman [30] |
| Vietnamese aerosol | 1.155–1.167 | 2.404–2.430 | Bollhöfer & Rosman [45] |
| Bangkok aerosol | 1.127 | 2.404 | Bollhöfer & Rosman [45] |
| Kuala Lumpur aerosol | 1.141 | 2.410 | Bollhöfer & Rosman [45] |
| Indonesian aerosol | 1.097–1.131 | 2.366–2.395 | Bollhöfer & Rosman [45] |
| Singapore Incineration ash | 1.141–1.153 | 2.412–2.427 | Chen et al. [28] |
| Singapore urban runoff | 1.169 | 2.451 | Carrasco et al. 2016, unpublished data |