Fig. 3. Effect of hydroxyapatite (HA) amendment on soluble (A) Ba, (B) Cd, (C) Co, and (D) Pb for two sediments equilibrated in 0.02 M KCl or 0.01 M CaCl2. Bars represent the standard deviation of the treatment means.
Fig. 3. Effect of hydroxyapatite (HA) amendment on soluble (A) Ba, (B) Cd, (C) Co, and (D) Pb for two sediments equilibrated in 0.02 M KCl or 0.01 M CaCl2. Bars represent the standard deviation of the treatment means.