Extended Data Fig. 3: The effect of oxygen on MeHg formation.
From: Methylmercury formation in water triggered by light-independent plastic weathering

Methylation potential of Hg(II) is 2-fold greater under an air atmosphere in the presence of dissolved O2 than under a N2 atmosphere. Ambient MeHg concentrations in the matrices were subtracted from all data. The bars show the mean ± s.d. of the incubation replicates (n = 3, also shown as circles). Bars labeled with different letters indicate statistically significant differences (P < 0.001) between treatments according to two-tailed independent-sample t-test.