Verifying suitability of sodium humate for decontamination of soils with high contents of copper and mercury
1997
Toth, J. | Hruskovicova, A. | Vollmannova, A.
Spring barley and maize at the first growing and development stages were sampled after increasing dosages of sodium humate were applied to soils with high copper and mercury contents. Subsequently, the effect of sodium humate on yields and on copper and mercury content in spring barley grain were evaluated by vegetative pot experiments. Sodium humate was prepared by alkaline extraction from lignite (deposit at Gbely, Slovakia), solid sodium humate containing 19.55 percent humic acid and 9.24 percent fulvic acids. Humates positively affected soils with high copper concentrations by reducing input of copper into spring barley grain. Results confirm the suitability of sodium humate prepared by lignite extraction for soil decontamination in immission areas of metallurgical works with extremely high concentrations of copper
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