FIG. 1.
Reduction of Cr(VI) by tartaric acid at pH 4 and 25°C. Experimental conditions: c[Cr(VI)]0=100 μM, c(tartaric acid)0=1 mM. □ 0 μM Cu(II) with light; ■ 400 μM Cu(II) with light; Δ 0 μM Cu(II) without light; ▲ 400 μM Cu(II) without light.
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