Fig. 5. Linear adsorption isotherms shown on a log scale for the sorption of 2,4-D, mecoprop, and bentazone on iron oxides, and adsorption distribution coefficients (K_d values) obtained from screening experiments with an initial pesticide concentration of 250 µg/L (1.04–1.21 µmol/L). Error bars indicate standard deviation (may be covered by the symbols).

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