Distinct Dispersion of As, Cd, Pb, and Zn in Farmland Soils near Abandoned Mine Tailings: Field Observation Results in South Korea

Figure 3

Scatter plots of metal(loid) concentrations in agricultural soils (n = 162) corresponding to an increasing distance from the mine tailing dumps for (a) Pb, (b) Zn, (c) Cd, and (d) As. The trend lines and 95% confidence (blue) and prediction (sky blue) bands are shown for the regressions. All values (<0.0001) for the F-test in ANOVA were less than the specified significance level (0.005).

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