Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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THE CONTENT OF LEAD, ZINC AND ARSENIC IN SOIL OF CAT TIEN NATIONAL PARK OF SOUTH VIET NAM

Nguyen V.T. 1 Okolelova А.А. 1
1 Volgograd State Technical University
Abstract. Soils of Cat Tien National Park formed from basaltic deposits and argillte. On the first time analysis contents of heavy metals Pb, Zn and metalloid As in soils at six different sites of the monsoon tropical forest under different types of vegetation: Lagerstroemia topland; Lagerstroemia lowland; Lagerstroemia Tower; Ficus, Afzelia and Dipterocapus. The maximum of Zn content in the ferralitic soil under Ficus (210 mg/kg), which over the Vietnam norm for heavy metals in soils (200 mg/kg). The minimum concentration of Zn - in red-yellow soil from argillte: 51 mg/kg (DG). The concentration of Pb was below the Norm (100 mg/kg). The maximum accumulation of Pb in the red-yellow soil: 11,4 mg/kg (DG), the lowest in brown ferralitic soil (LVK - 2,3 mg/kg). The lowest of As content in the brown ferralitic soil (LVK): 1,2 mg/kg, maximum - 22,9 mg/kg in the red-yellow soil (DG). The share of As content over the Vietnam norm (MPC = 12 mg/kg).