Substrate | Sample location* | mg/l | mg/m 2 | Substrate | Sample location* | mg/l | mg/m 2 |
---|---|---|---|---|---|---|---|
Cement blocks | B | 2.22E-02 | 22 | Limestone blocks | F | 2.48E-02 | 25 |
Cement blocks | E | 2.38E-02 | 24 | Limestone blocks | A | 2.18E-02 | 22 |
Cement blocks | F | 2.23E-02 | 22 | Iron sheet | C | 2.20E-02 | 22 |
Mud daub | A | 2.30E-02 | 23 | Burnt bricks | B | 2.19E-02 | 22 |
Mud daub | E | 2.47E-02 | 25 | Palm thatch | A | 2.51E-02 | 25 |
Wood | B | 2.15E-02 | 22 | Palm thatch | D | 2.23E-02 | 22 |
Wood | D | 2.39E-02 | 24 | White wash | C | 2.32E-02 | 23 |
Oil paint | A | 2.00E-02 | 20 | White wash | A | 2.36E-02 | 24 |
Oil paint | D | 2.01E-02 | 20 | White wash | B | 2.17E-02 | 22 |