3.2. Inorganic and organic mercury in soils
Inorganic Hg concentrations in soils for the two depths are
presented in Fig. 2A. The IHg levels were highly variable, ranging
from 0.080 to 210 mg kg−1 d.w. (with a mean of 27 mg kg−1 and
a median of 5.0 mg kg−1) in the 39 samples of 0–10 cm depth and
from 0.080 to 83 mg kg−1 d.w. (with a mean of 17 mg kg−1 and a
median of 5.0 mg kg−1) in the 39 samples of 10–20 cm depth. The
IHg concentration in soils varied between 97 and 100% of their
respective THg concentration.