Chemical variability of water and sediment over time and along a mountain river subjected to natural and human impact | Knowledge and Management of Aquatic Ecosystems

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Table 4

The concentrations of heavy metals (median, range, in μg·dm⁻³) in the water of the Biała Tarnowska River.

Metal		Stations

		1	2	3	4	5	6	7	8	9	10
Cd	Median	0.007	0.015	0.015	0.007	0.008	0.011	0.011	0.017	0.021	0.011
	Range	nd–0.083	nd–0.040	nd–0.026	nd–0.050	nd–0.022	nd–0.057	nd–0.062	nd–0.036	nd–0.057	nd–0.054
Pb	Median	0.4	0.3	0.3	0.3	0.4	0.5	0.6	0.5	1.0	0.4
	Range	0.04–3.05	0.01–0.98	0.01–1.93	0.01–1.19	0.01–3.17	0.01–0.96	0.01–1.61	0.01–1.39	0.01–3.57	0.07–2.52
Zn	Median	2.0	2.0	2.5	3.0	3.0	5.0	5.0	4.0	9.0	9.0
	Range	0.5–90.0	0.5–44.0	0.5–85.0	0.5–76.0	0.5–33.0	0.5–40.0	0.5–115.0	0.5–56.0	0.5–137.0	0.5–75.0
Mn	Median	9	11	19	14	21	37	42	42	96	84
	Range	1–45	1–38	1–34	1–46	7–111	12–96	14–65	14–84	36–180	28–180
Fe	Median	66	84	51	109	54	134	187	188	213	210
	Range	4–575	4–439	4–339	4–485	1–401	46–317	81–628	69–627	58–1068	59–1289
Cr	Median	0.39	0.47	0.50	0.69	0.70	0.40	0.86	0.73	0.41	0.39
	Range	0.01–2.72	0.01–4.53	0.01–6.01	0.01–1.80	0.01–7.13	0.01–4.82	0.01–2.81	0.01–6.23	0.01–7.62	0.01–23.83
Ni	Median	0.16	0.32	0.46	1.00	0.85	0.54	0.89	1.14	1.77	2.24
	Range	0.01–4.15	0.01–12.33	0.01–2.05	0.01–5.00	0.01–4.19	0.01–1.37	0.01–3.81	0.01–5.81	0.01–8.60	0.01–12.17

nd − not detected.

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