Table PAH concentrations found in the analyzed soils

Content of inorganic elements (ppm) by PIXE in ABR-215062 different mineral coal tailings from the Charqueadas sites (mean ± standard deviation).Inorganic elementsSite 1Site 2Mg2623 ± 6072169 ± 276Al141949 ± 4920134103 ± 6808Si283789 ± 10485???195997 ± 11383S1185 ± 3824631 ± 371???K3400 ± 3103736 ± 397Ca686 ± 109883 ± 219Ti5430 ± 28??4009 ± 445Cr67 ± 664 ± 21Mn122 ± 2661 ± 33Fe30848 ± 16449179 ± 14429Ni331 ± 63??62 ± 55Zn36 ± 1219 ± 7??Significant difference between Site 1 and Site 2 at aridity P < 0.01.???P < 0.001 and (Unpaired Student t-test).Full-size tableTable optionsView in workspaceDownload as CSV