Baseline atmospheric mercury studies at Ross Island, Antarctica
- 1 March 1993
- journal article
- Published by Cambridge University Press (CUP) in Antarctic Science
- Vol. 5 (3) , 323-326
- https://doi.org/10.1017/s0954102093000410
Abstract
The first extended baseline studies of total gaseous mercury (TGM) and dimethylmercury (DMM) in Antarctica are reported. Mean TGM concentrations of 0.52, 0.60 and 0.52 ng m−3 were obtained for three consecutive years at the southern tip of Ross Island (77°S). The levels of DMM in Antarctica are less than 10% of the TGM, and frequently fall below the limit of detection. These results represent the lowest TGM concentrations recorded globally and extend into polar regions the observation of a decrease in atmospheric mercury concentration with increasing latitude.Keywords
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