
Figure 1.
The sampling area: A. Poland’s location in Europe; B. Sampling locations

Figure 2.
Geological map accordi ng to Detailed geological map of Poland 1:50,000 Zabrze sheet [Wyczółkowski 1957]

Figure 3.
Location of zinc smelter “Victor” an d “Ida” ironworks [according to Degenhardt, 1870]
Table 1.
Consensus-Based TEC and PEC values according to MacDonald et al. (2000)
| As | Cd | Cr | Cu | Hg | Ni | Pb | Zn | |
|---|---|---|---|---|---|---|---|---|
| TEC | 9.79 | 0.99 | 43.4 | 31.6 | 0.18 | 22.7 | 35.8 | 121 |
| PEC | 33.0 | 4.98 | 111 | 149 | 1.06 | 48.6 | 128 | 459 |
Table 2.
Statistical parameters of chemical element content in soils (n= 271)
| Element/parameter | Detection limit | Min | Max | Median | Mean | *Regional geochemical background (median) | St. dev. | Coefficient of variation CV % |
|---|---|---|---|---|---|---|---|---|
| Ag mg/kg | 1 | <1 | 5.2 | 0.5 | 0.5 | <1 | 0.3 | 62 |
| As mg/kg | 3 | <3 | 303.6 | 6.6 | 11.0 | 6 | 23.7 | 213 |
| Ba mg/kg | 1 | 10.0 | 1,045.4 | 134.0 | 175.9 | 59 | 150.6 | 86 |
| Cd mg/kg | 0.5 | <0.5 | 78.0 | 2.0 | 3.5 | 2 | 6.8 | 193 |
| Co mg/kg | 1 | <1 | 25.2 | 3.3 | 4.6 | 2 | 4.3 | 94 |
| Cr mg/kg | 1 | <1 | 109.1 | 12.8 | 15.2 | 8 | 11.3 | 75 |
| Cu mg/kg | 1 | 1.6 | 279.1 | 19.6 | 27.2 | 9 | 29.5 | 109 |
| Fe % | 0.01 | 0.04 | 4.44 | 0.98 | 1.12 | 0.69 | 0.75 | 67 |
| Hg mg/kg | 0.02 | 0.03 | 4.49 | 0.08 | 0.12 | 0.05 | 0.28 | 229 |
| Mn mg/kg | 2 | 4.4 | 3,505.8 | 355.2 | 441.5 | 242 | 435.4 | 99 |
| Ni mg/kg | 1 | <1 | 52.2 | 9.2 | 12.0 | 6 | 9.6 | 80 |
| Pb mg/kg | 2 | 7.5 | 2,485.2 | 95.9 | 161.9 | 72 | 236.8 | 146 |
| S % | 0.003 | 0.003 | 0.792 | 0.033 | 0.042 | 0.022 | 0.055 | 131 |
| Sr mg/kg | 1 | 1.2 | 287.7 | 20.0 | 31.3 | 9 | 35.5 | 113 4 |
| Zn mg/kg | 1 | 10.3 | 11,026.1 | 264.5 | 442.5 | 164 | 908.2 | 205 |
| pH | 4.3 | 8.8 | 7.2 | 6.8 | 6.74 | 1.2 | 18 |
* According to the Detailed Geochemical Map of Upper Silesia, 1999–2021 (27,941 samples) [Palacz et al. 2021]. Explanations: Min = minimum, Max = maximum, and St. dev. = standard deviation

Figure 4.
Contamination factor (CF) values in soil (n=271)

Figure 5.
Geoaccumulation index values in soils
Table 3.
Principal Component Analysis (Varimax raw factor model) for topsoils; marked loads >0.7
| Element | Topsoil | |||
|---|---|---|---|---|
| F1 | F2 | F3 | F4 | |
| Ag, As, Cd, Pb, Zn | Co, Cr, Fe, Mn | Ba, Sr | Hg | |
| Ag | 0.88 | −0.04 | 0.10 | 0.16 |
| As | 0.95 | 0.11 | 0.07 | −0.06 |
| Ba | 0.26 | 0.23 | 0.80 | 0.21 |
| Cd | 0.83 | 0.13 | 0.19 | 0.21 |
| Co | 0.08 | 0.87 | 0.09 | 0.06 |
| Cr | 0.04 | 0.70 | 0.35 | −0.01 |
| Cu | 0.31 | 0.23 | 0.64 | −0.19 |
| Fe | 0.24 | 0.74 | 0.51 | −0.03 |
| Hg | 0.11 | 0.10 | 0.09 | 0.84 |
| Mn | 0.14 | 0.79 | −0.03 | 0.07 |
| Ni | 0.19 | 0.68 | 0.55 | 0.06 |
| Pb | 0.90 | 0.17 | 0.15 | 0.15 |
| S | 0.67 | 0.17 | 0.21 | −0.33 |
| Sr | 0.10 | 0.13 | 0.89 | 0.01 |
| Zn | 0.84 | 0.16 | 0.18 | −0.16 |
| Variance % | 31.07 | 20.97 | 17.90 | 6.82 |
| Cumulative % | 76.76 | |||
Table 4.
Statistical parameters of chemical element content in stream sediments (n= 58)
| Element | Detection limit | Min | Max | Median | Mean | *Regional geochemical background (median) | St. dev. | Coefficient of variation CV % |
|---|---|---|---|---|---|---|---|---|
| Ag mg/kg | 1 | <1 | 3 | <1 | <1 | <1 | <1 | 84 |
| As mg/kg | 3 | <3 | 99 | 11.5 | 19.4 | 8.0 | 20.9 | 108 |
| Ba mg/kg | 1 | 20 | 427 | 124 | 136 | 97 | 91 | 67 |
| Cd mg/kg | 0.5 | <0.5 | 202 | 7 | 19 | 4 | 35 | 183 |
| Co mg/kg | 1 | <1 | 84 | 5 | 9 | 5 | 13 | 144 |
| Cr mg/kg | 1 | 3 | 452 | 18 | 26 | 12 | 58 | 219 |
| Cu mg/kg | 1 | 5 | 205 | 35 | 46 | 18 | 41 | 89 |
| Fe % | 0.01 | 0.10 | 18.85 | 1.28 | 1.83 | 1.33 | 2.54 | 139 |
| Hg mg/kg | 0.05 | <0.05 | 6.04 | 0.09 | 0.31 | 0.09 | 0.84 | 275 |
| Mn mg/kg | 2 | 17 | 7,561 | 365 | 724 | 300 | 1,103 | 152 |
| Ni mg/kg | 1 | 3 | 152 | 14 | 22 | 12 | 24 | 110 |
| Pb mg/kg | 2 | 13 | 847 | 128 | 179 | 83 | 157 | 88 |
| S % | 0.003 | 0.029 | 5.143 | 0.222 | 0.465 | 0.161 | 0.797 | 172 |
| Sr mg/kg | 1 | 3 | 332 | 22 | 34 | 26 | 46 | 137 |
| Zn mg/kg | 1 | 69 | 9,614 | 815 | 1,546 | 447 | 1,950 | 126 |
* According to the Detailed Geochemical Map of Upper Silesia, 1999–2021 (5,769 samples) [Palacz et al., 2021]. Explanations: Min = minimum, Max = maximum, and St. dev. = standard deviation

Figure 6.
Geoaccumulation index values in stream sediments

Figure 7.
Threshold effect concentration (TEC) in stream sediments

Figure 8.
Probable effect concentration (PEC) in stream sediments
Table 5.
Principal Component Analysis (Varimax raw factor model) in stream sediments; marked loads >0.7
| Element | Stream sediments | |||
|---|---|---|---|---|
| F1 | F2 | F3 | F4 | |
| Cr, Mn | Ag, As, Cd, Pb, Zn | Co, Ni, S | Fe | |
| Ag | −0.03 | 0.85 | −0.04 | −0.13 |
| As | 0.01 | 0.72 | −0.02 | 0.60 |
| Ba | 0.69 | 0.02 | −0.29 | −0.01 |
| Cd | 0.00 | 0.85 | 0.12 | 0.02 |
| Co | 0.11 | −0.02 | 0.95 | 0.07 |
| Cr | 0.91 | 0.05 | 0.04 | 0.06 |
| Cu | 0.69 | 0.32 | 0.46 | −0.10 |
| Fe | 0.09 | 0.12 | 0.22 | 0.79 |
| Hg | −0.10 | 0.25 | −0.04 | −0.51 |
| Mn | 0.85 | −0.08 | 0.22 | 0.13 |
| Ni | 0.17 | 0.11 | 0.94 | 0.07 |
| Pb | 0.35 | 0.75 | 0.24 | 0.23 |
| S | −0.06 | 0.26 | 0.89 | 0.08 |
| Sr | 0.44 | 0.23 | 0.47 | −0.15 |
| Zn | 0.04 | 0.90 | 0.26 | 0.00 |
| Variance % | 19.22 | 24.41 | 22.24 | 9.20 |
| Cumulative % | 75.07 | |||

Figure 9.
Content of arsenic in topsoil and stream sediments

Figure 10.
Content of cadmium in topsoil and stream sediments

Figure 11.
Content of zinc in topsoil and stream sediments