Fig. 9. Distribution of ratio of methylmercury (MeHg) to total Hg in horizons of both mineral and organic soils from Germany (Padberg and May, 1992; Schwesig et al., 1999; Schwesig and Matzner, 2000), Sweden (Hultberg et al., 1994; Munthe et al., 1998), and Ontario, Canada (Moore et al., 1995) (n = 60).

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