Table 3.
pH, ETU, Mn and Zn concentration in surface water of the drain (D), creek (C), lake (L) subsurface (SS) and ground water (GW)
| Site | Depth cm/m | pH | ETU (mg L−1) | Mn (mg L−1) | Zn (mg L−1) |
|---|---|---|---|---|---|
| C | 0–10 cm | 7.4 ± 3.7 | 21.5 ± 15.2c | 2.4 ± 0.0 | <0.01 |
| C | 10–50 cm | 7.3 ± 3.7 | <0.01a | ND | ND |
| D | 0–10 cm | 7.4 ± 3.7 | 15.5 ± 16.7c | 2.3 ± 0.1 | <0.01 |
| D | 10–50 cm | 7.4 ± 3.7 | 22.5 ± 25.0c | ND | ND |
| L | 0–10 cm | 7.7 ± 3.8 | <0.01a | 2.3 ± 0.1 | <0.01 |
| L | 10–50 cm | 7.1 ± 0.1 | <0.01a | ND | ND |
| SS | 3–5 m | 7.6 ± 3.9 | 4.3 ± 5.3b | 2.3 ± 0.1 | <0.01 |
| GW | 70–80 m | 7.3 ± 0.2 | <0.01a | 2.4 ± 0.1 | <0.01 |
ND No data
Detection limit: ETU 0.01 ug L−1
Pesticide limit according to the European Union (European Commission 1998): 0.1 ug L−1
Means and standard deviation, significant differences between the water bodies (p < 0.05): a < b < c n = 3