Table 4 Sequences of the sorption capacities of the studied particle types in the samples before and after the DCB extraction. The difference is not significant when the greater-than sign was put within parentheses. C calcite, IS illite/smectite, S smectite, CF clay-ferrihydrite association, F ferrihydrite. Note that no sufficient number of clay-ferrihydrite and/or ferrihydrite particles remained after the DCB extraction for data evaluation, and sample LB did not contain calcite

From: Effect of pedogenic iron-oxyhydroxide removal on the metal sorption by soil clay minerals

  Sample LB Sample LBDCB
Cd CF (>) S (>) F (>) IS S (>) IS
Cu F (>) S (>) CF (>) IS S (>) IS
Pb F (>) CF (>) S (>) IS, but F > IS S > IS
Zn CF = IS (>) S (>) F S (>) IS
  Sample PC Sample PCDCB
Cd F (>) CF (>) IS (>) S > C, but F > S IS (>) CF = S (>) C
Cu F (>) CF (>) IS (>) S (>) C, but F > S, C; CF > C S (>) CF (>) IS > C
Pb F > CF > IS (>) C (>) S CF (>) S (>) IS > C
Zn F (>) IS (>) CF (>) C (>) S S (>) CF (>) IS (>) C, but S > C