A survey on heavy metals pollution in water resources of Kouh-e Zar Mining area (The West of Torbat Heydarieh, Iran)
Paper Details
A survey on heavy metals pollution in water resources of Kouh-e Zar Mining area (The West of Torbat Heydarieh, Iran)
Abstract
Totally, eight samples of groundwater of the area were taken to test in order to studying the heavy metal pollution in Kouh-e Zar and eight heavy metal such as arsenic (As), cadmium (Cd), chromium (Cr), nickel (Ni), Copper (Cu) Lead (Pb) and Zinc (Zn) were analyzed by ICP (Inductively Coupled Plasma- Optical Emission Spectrometer), wherein average of As and Cd in water resources were higher than the WHO standards. Then, the quality of water resources around the area was measured and assessed by qualitative indices of heavy metals MI, Cd, HEI and HPI. Five samples were non-potable water based on MI index and one sample of the studied area waters was in the category of high pollution based on Cd index. Cadmium and arsenic had a great role in MI and Cd indices high amounts. There are two main sources related to the presence of these two elements, one is interaction of water-rock and the other one is mining activities in the area, It is possible that over time and with increasing in concentrations of these elements in ground water, we have the environmental problems in the mentioned area. According to the point that long-term and continuous consumption of water resources containing heavy metals, will cause problems for human health, in this regard, it is recommended that more detailed examinations of the mining activity be done on the water resources of the region by sampling alternatively.
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