Figure 4 | Scientific Reports

Figure 4

From: Synergistic use of siderophores and weak organic ligands during zinc transport in the rhizosphere controlled by pH and ion strength gradients

Figure 4

Intrinsic stability constants (logβ0) for the formation of [Zn(Cit)]− and [Zn(HCit)] species calculated using the Davies equation and logβ values determined at different ionic strengths are shown as circles (open for [Zn(Cit)]– and closed for [Zn(HCit)]). The intrinsic stability constants for the same two species determined by fitting the parameterised Extended Debye-Hückel (EDH) equation to the full ionic strength dataset are shown as solid lines. The error for the intrinsic stability constants is reported in SI Table 2 and differences are statistically significant (p < 0.05).

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