Table 1 The updated global mercury budget [2] (Mg/year)

Emission:

i) Natural (geogenic)

500;

ii) Re-emission/re-mobilization (natural and legacy):

    Biomass burning

600

    From soil and vegetation

1000

iii) Anthropogenic

2500 (2000–3000)

iv) Ocean, net evasion (gaseous elemental Hg)

3400 (2900–4000)

Total

7000

Deposition:

i) To land/freshwater

3600

ii) To ocean

3880

Total

7480