Open Access
Table 5.
Copper content in three soil sample
| Experiment variant | Gross copper content, mg/kg | Mobile copper compounds, mg/kg | pH of soil | ||
|---|---|---|---|---|---|
| № | Soil type | The extracting solution | |||
| acetate‐ ammonium buffer solution with pH 4.8 | 1н. HNO3 | ||||
| 1 | «pure» soil | 69 | 3.0 | 5.1 | 6.27 |
| 2 | soil+Cu2+ | 170 | 3.9 | 22.6 | 5.91 |
| 3 | soil+Cu2+ + clay | 110 | 2.6 | 19.0 | 6.26 |
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