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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Appl Geochem. 2009 Dec 1;42(12):2234–2245. doi: 10.1016/j.apgeochem.2009.09.010

Figure 2.

Figure 2

Aqueous phase electrical conductivity (EC) and DTPA extractable metals from initial surface and subsurface sampling of tailings. (a) EC (in units of dS m−1) versus tailings pH. In parts (b–f) DTPA extractable concentrations of various metals are plotted in units of grams of metal extracted/kg of tailings dry mass (g kg−1), but note that each is plotted on its own Y axis scale versus a consistent X axis pH scale: (b) Al, (c) Mn, (d) Fe, (e) Zn, (f) Pb. Bottom two graphs show (g) Zn versus Mn, and (h) Pb versus Fe correlations in DTPA extracts (all in units of g kg−1). Linear regression statistics are shown on each plot, but lines are shown only in cases where linear fits were statistically significant (p < 0.05).