Fig. 4 | Scientific Reports

Fig. 4

From: Mechanisms of Cd immobilization in contaminated calcareous soils with different textural classes treated by acid- and base-modified biochars

Fig. 4

Amount of soil Cd (mg kg−1) associated with the G2 parameter derived from two-first order kinetics equation as affected by biochars and soil textural classes. Notes: Cl, control (with no biochar application); R, rice husk biochar; RA, rice husk biochar modified by HNO3; RB, rice husk biochar modified by NaOH; S, sheep manure biochar; SA, sheep manure biochar modified by HNO3; SB, sheep manure biochar modified by NaOH; H, silty clay loam; M, Loam; L, sandy loam. Numbers followed by the same letters in each section are not significantly (P < 0.05) different.

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