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 |