Raw data of saltwater intrusion weakens Fe-(oxyhydr)oxide-mediated (im)mobilization of Ni and Zn in redox-fluctuating soil–groundwater system.xlsx

<strong>Fig. 1</strong>. Comparison of the dynamics of Eh (a) and the release of Ni (b), Zn (c), and Fe (d) in DWS (control experiment), PWS (without saltwater intrusion), BWS (with low-salinity intrusion), and SWS (with high-salinity intrusion) during the RED-REOX process. <strong>Fig. 2</strong>. Principal coordinate analysis (PCoA) with Jaccard dissimilarity of the microbial community in the soil at RED-20 (a). Relative abundance of the top 20 bacterial genera in the soil microbial communities at RED-20 (b). <strong>Fig. 3.</strong> Comparison of the species transformation of F1-Ni (a), F2-Ni (b), F1-Zn (c), F2-Zn (d) in DWS (control experiment), PWS (without saltwater intrusion), BWS (with low-salinity intrusion), and SWS (with high-salinity intrusion) during the RED-REOX process. The line and “+” within the box represent the median and mean values of all data. The bottom and top edges of the box represent 25% (lower quartile) and 75% (upper quartile) of all data, respectively. The bottom and top bars represent minimal and maximal values, respectively. *<em>P</em>&lt;0.05, **<em>P</em>&lt;0.01, and ***<em>P</em>&lt;0.001; ns = no significant difference; paired t-test was performed for RED (n=12) versus REOX (n=8). F1 is the weak acid-extractable fraction, and F2 is the reducible fraction. <strong>Fig. 4. </strong>Dynamics of Feo/Fed ratio (a), and the difference of Feo/Fed ratio (b) in DWS (control experiment), PWS (without saltwater intrusion), BWS (with low-salinity intrusion), and SWS (with high-salinity intrusion) during the RED-REOX process. The line and “+” within the box represent the median and mean values of all data. The bottom and top edges of the box represent 25% (lower quartile) and 75% (upper quartile) of all data, respectively. The bottom and top bars represent minimal and maximal values, respectively. *<em>P</em>&lt;0.05, **<em>P</em>&lt;0.01, and ***<em>P</em>&lt;0.001; ns = no significant difference; paired t-test was performed for RED (n=12) versus REOX (n=8). Feo/Fed is the ratio of poorly crystalline iron oxide (Feo) to crystalline iron oxide (Fed). <strong>Fig. 5. </strong>Species distribution of Ni (a) and Zn (b) as obtained by the linear combination fitting analysis of Ni K-edge XANES and Zn K-edge XANES spectra in the Ni and Zn hotspots. Schematic diagrams of Ni/Zn species transformation driven by PW (c). Schematic diagrams of Ni/Zn species transformation driven by SW intrusion (d). <br>