In the laboratory experiment the influence of (V) sodium arsenate on the quantitative composition and qualitative content of free and bound amino acids of the dissolved organic matter in the dark-gray forest soil is established. Depending on the As(V) introduction dose, the free amino acid content varied from 53,0±7,5 to 240,2±53,7 microgram/kg, the bound amino acids content varied from 106,9±13,9 to 527,5±93,4 microgram/kg. The amino acidquality composition in the arsenic contamination didn’t change.
soil, free amino acids, dissolved organic matter, arsenic, soil amino acids
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