Table 5: Statistical results of TGM measurements ( and were compared at 95% CI).

Mean Hg (ng m−3)SD (ng m−3)
AuAu/TiO2AuAu/TiO2

L137.810.10.82.41.5752.7769.019.0
L238.47.91.51.10.4662.7761.919.0
L336.361.610.2752.7762.619.0
R38.69.12.95.90.1312.7764.119.0