Fig. 1.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.
![Metal/metalloid concentrations in the vertical column of the mine pit lake: mean (μg · L–1). WRV means the global water reference value [μg · L–1] after Salminen et al. (2005).](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647351904e662f30ba539f38/j_quageo-2023-0028_fig_005.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKCDONMZAN%2F20260306%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260306T032517Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBAaDGV1LWNlbnRyYWwtMSJGMEQCIB8ZCgA%2BITwkrLg4cnkcH0tVrg7wv5sK6alW9sKaRKxzAiBBSg5OmnF7%2F1jtCsDBMVYEynvzFRAKOE5xlECGOFxzlirGBQjZ%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F8BEAIaDDk2MzEzNDI4OTk0MCIMSh2Fvmj%2BYJ6%2BFiFHKpoFcxj2xw7KvISCwH1sZjbeZrm00ICCP6Ukh2jgPIW0Liw5GZ5l1kxqph5PPXSq%2FYvg6PnJLnN%2BZdjqeAdSvDsQekqaIvGVEgidsjTbdoD3Qac7xVsRfX%2Fkva6c1f1mJLf2TevyZNPjmi4Xm2xareLUjdbR5hhtppSbX%2FRQMWPVDj6L3Q00KxoVWSVGHahflQP5Y1tJC1FdWR6oJ8HzmCNYUVP%2BJJbovvAwHYo8RPeKdRT7HgVqkwhu7ldFezF9LLxyi3a0SDJWicZE%2BdMgj3BJ5EulZodXYi2y3ogTvD0X064DGdaNILr2%2F9zjb4hEv%2B095o9ggYM0HV5Ygh1ymP2%2B%2BaSPPOIUaAhrt00KEmBdrJ%2FKxhKTzbNTrDwITf0TVMY0o04xGx7OZK1CgTxOpw2XkvGF4i3I2gI4ShVJZKPJFO0KqC0Sp0TSweAsE78NaLHzGMMHf74p5WheUWQPLNFIW3jO3Isxmi9q66jxGjVxOpXkGshxVgQrdStFsf1HYc3AJQEfeE2nQudzOjb7uVAgcqzahmsjQWKAxtQRbkzL6w9DejusPhGbTxH71UtCi542QG%2BSD1uA%2BmDvykaxiQD%2FI3SeA9sNZPikPCHfEBCzVgWI8x%2Bk8WoKArWdR8T%2FnVTjZi11bSozZIFQaoBJtjmn6AiEAA9NDvf2RqXB1B9uPCrX24Xi%2FotmhYXlm8BQA0wZQUvViJtCV1MfXvbd1GDkrMKQGe8fBahc8nwqhfJV5avSfUVeoR73%2F8MrVDKtiFoROZroDCOz4YmHkAKTxo%2BRVy%2FmfwJ5i%2FBl4auh%2FhqHz0IytWov2IKe3e2b3De40ODEX6YMNzsi03FkO1MrE7ZIp1q3MwjDbQPj18YrM2VLli4MvwZj7VtiWjanML2lqM0GOrIBP1LbySlujbP5H1A2gMMwwOQT7ZmxjRmm4tl%2B4oybsf2c378wHG%2BZjULMnmT4PpLnDc5B2Cq44GWkuqyURa2pGjJfMxWw%2BJiWgp2ix1pBBhMsxWMF1hPgBlgofobwrYWzcBNmxYXejlDmSou1sXRDnOhq9KFI4YAb9UNzvB1RNW1YlY6ndwwkGMCOaj1i%2FQH4ccph1FLpoOEUug4IesZijcbW8l2js12WkoIZVsT3s60QVA%3D%3D&X-Amz-Signature=1a4c9d0dc3fbf971a0f89bb8044b51d6b45fa39c4c42466f68fbb0be7bccb076&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

Global reference surface water values (Salminen et al_ 2005) and for the upper continental crust (McLennan 2001)_
| Feature | U | Cd | As | Tl | Co | Cu | Ni | Pb | Cr | Zn | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reference values | Surface water – world [μg · L–1] | 0.5 | 0.2 | 2.0 | 0.01 | 0.3 | 7.0 | 2.5 | 0.3 | 1.0 | 20 |
| Rock – upper continental crust [μg · kg–1] | 2800 | 98 | 1500 | 750 | 17,000 | 25,000 | 44,000 | 20,000 | 83,000 | 71,000 | |
| Standard WHO (2022) [μg · L–1] | 30* | 3 | 10 | – | – | 2000 | 70 | 10 | 50 | – | |
The results of the single pollution index (SPI) calculations for given metals/metalloids in the vertical column of the pit lake against mean values and standard deviations (SD)_ IPI – integrated pollution index_
| Depth [m] | SPI | IPI | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| As | Co | Cu | Ni | Cr | Tl | U | Pb | Cd | Zn | ||
| 0 | 5916 | 3760 | 784.1 | 492.4 | 528.0 | 294.0 | 187.6 | 66.0 | 22.4 | 5.1 | 1206 |
| 1 | 5957 | 3810 | 844.9 | 542.0 | 518.0 | 278.0 | 182.8 | 111.3 | 21.6 | 10.1 | 1228 |
| 2 | 6055 | 3777 | 826.7 | 546.0 | 525.0 | 176.0 | 195.2 | 108.7 | 25.8 | 13.2 | 1225 |
| 3 | 6041 | 3773 | 829.9 | 535.6 | 553.0 | 235.0 | 193.4 | 84.3 | 23.2 | 12.1 | 1228 |
| 4 | 6059 | 3780 | 819.6 | 516.4 | 500.0 | 270.0 | 190.2 | 89.0 | 24.1 | 7.7 | 1225 |
| 5 | 6583 | 4023 | 891.7 | 576.0 | 531.0 | 239.0 | 206.0 | 189.0 | 22.3 | 22.7 | 1328 |
| 6 | 6648 | 3957 | 920.7 | 558.0 | 568.0 | 328.0 | 200.0 | 161.3 | 26.7 | 26.1 | 1339 |
| 7 | 6909 | 4150 | 939.1 | 620.4 | 593.0 | 387.0 | 212.0 | 133.0 | 28.4 | 21.7 | 1399 |
| Mean | 6271 | 3879 | 857.1 | 548.4 | 539.5 | 275.9 | 195.9 | 117.8 | 24.3 | 14.8 | 1272 |
| SD | 356.1 | 137.2 | 50.6 | 36.1 | 28.0 | 59.6 | 9.1 | 38.7 | 2.3 | 7.2 | 67.7 |
Dry matter (TDS), salinity and concentration of selected ions in the water column (every 1 m) of the Podwiśniówka mine pit lake on 18 November 2018_
| Depth [m] | TDS [mg · L–1] | Salinity [%] | Fetot. = Fe(3+) + Fe(2+) | Fe2+ | SO42– | PO43– |
|---|---|---|---|---|---|---|
| [mg · L–1] | ||||||
| 0 | 2580 | 2.9 | 739 | 12 | 3110 | 16.2 |
| 1 | 2938 | 3.2 | 736 | 12 | 3110 | 13.3 |
| 2 | 3383 | 3.7 | 762 | 12 | 3090 | 11.6 |
| 3 | 3562 | 3.9 | 741 | 21 | 3000 | 15.6 |
| 4 | 3656 | 4.1 | 774 | 34 | 3060 | 14.2 |
| 5 | 3822 | 4.3 | 770 | 79 | 3090 | 15.3 |
| 6 | 4258 | 4.7 | 808 | 100 | 3460 | 15.6 |
| 7 | 4453 | 4.9 | 842 | 130 | 3390 | 18.4 |
Correlation matrix between metal/metalloid concentrations in water_
| As | Cu | Ni | Co | Cr | Zn | U | Pb | Cd | Tl | |
|---|---|---|---|---|---|---|---|---|---|---|
| As | 1.00 | |||||||||
| Cu | 0.95 | 1.00 | ||||||||
| Ni | 0.88 | 0.91 | 1.00 | |||||||
| Co | 0.97 | 0.92 | 0.91 | 1.00 | ||||||
| Cr | 0.77 | 0.75 | 0.72 | 0.72 | 1.00 | |||||
| Zn | 0.90 | 0.93 | 0.80 | 0.82 | 0.68 | 1.00 | ||||
| U | 0.93 | 0.82 | 0.86 | 0.90 | 0.72 | 0.82 | 1.00 | |||
| Pb | 0.77 | 0.81 | 0.70 | 0.74 | 0.35 | 0.90 | 0.68 | 1.00 | ||
| Cd | 0.67 | 0.63 | 0.61 | 0.55 | 0.70 | 0.55 | 0.66 | 0.23 | 1.00 | |
| Tl | 0.61 | 0.58 | 0.43 | 0.63 | 0.64 | 0.34 | 0.38 | 0.15 | 0.47 | 1.00 |