Vestnik of Saint Petersburg University Earth Sciences, Год журнала: 2023, Номер 68(4)
Опубликована: Янв. 1, 2023
Speciation of ore and accompanying elements (Cu, Zn, Fe, Ni, Pb, Cd, Cr, V, Ba, Sr) in steppe soils the Transurals (vicinity city Sibay, Bashkortostan) was studied with sequential extraction method. Attention given to change elements’ speciation area affected by mining (Cu-Zn deposit). The results are supplemented chemical analysis humic acids (isolated alkaline extraction) granulometric fractions. It revealed that background areas characterized low mobility a relatively uniform distribution over soil profile. Residual fraction percentage (fraction’s share element’s total content) is highest. Percentage exchangeable carbonate fractions insignificant (Sr Ba exceptions). crystalline Fe hydroxides, reduceable oxidizable varies from shares percent 15%. Cd stands out for high (up 30% residual 50%). Comparison obtained allows us suggest near objects industry dust enriched Cu, Pb Sb comes surface. This leads shard increase content upper layer chernic horizon, these among Increase not only due prevailing fraction; fraction, reducible hydroxides significantly increase. Sharp (largely sulfides) noted.
Язык: Английский