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پایین دست
We collected 18 surface water samples from the river located downstream from the tailing pond, and the water is mainly used
Eighteen surface water samples, which were taken along the downstream of river, and seven groundwater samples from wells were collected to analyze the heavy metal contamination in water.
A similar variation appeared in the concentrations of Zn, Cd, Ni, and As; the concentrations decreased along the downstream of river, and the highest recorded concentrations existed in site "W1".
Sites "W1", "W2", "W3", and "W4" were downstream and closer to the tailing pond than other sites, and their concentrations were relatively high.
The elevated heavy metal concentrations in the study area resulted from continuous dispersal downstream from the tailings and waste water from tailing pond.
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