Scale	1:200 000
Sampling density	1x1 km
Area	2000 km²
Leaching	hydrochloric acid, 1:4
Analytical methods	ICP-AES, AAS, AAS-CV, potentiometry, conductometry
Maps of pH and elements content soil (2268 samples)	Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Ni, P, Pb, S, Sr, Ti, V, Zn, pH
Maps of elements content of aqueous sediments (1444 samples)	Ag, Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Ni, P, Pb, S, Sr, Ti, V, Zn
Maps of elements content of surface water (1402 samples)	Al, B, Ba, Ca, Co, Cu, Fe, K, Li, Mg, Mn, Na, Ni, SiO₂, SO₄, Sr, Ti, Zn, pH, EC
Additional maps	grain size of soil, geological, land development, land use,

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