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<br />Metals Solubilization <br />COMP 24 Metals and pH <br />1 <br />m <br />E <br />c <br />0 <br />a~ <br />U <br />C <br />O <br />v 0. <br />0.0 <br /> <br />-^-- pH -+- Iron =Zinc <br />Arsenic -~- Chromium ~- Thallium <br />Figure 24 <br />4 8 12 16 20 24 28 <br />Elapsed Weeks of Test <br />