Yafteh

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With industrial and economic growth and production of different compounds and chemical materials which human being has gained using natural resources for his ease and comfort , in turn , he introduces matters such as heavy metals and toxic agents into the nature , an unwanted process which leads to serious problems and dangers either for environment or for himself. This study aims at determination of heavy metals concentration (As,Pb,Cd,Cr,Hg and Zn) in water resources and wells of Aleshtar during 4 seasons in the year 2009. Materials and Methods :This cross- sectional study was carried out to determine concentration of heavy metals including As, Pb,Cd, Cr, Hg, Zn in Aleshtar drinking water resources. twenty samples from five drinking water wells were systematiclly collected and carried to water lab. By use of express standard methods,samples were 10 times concentrated, then metals concentralion determined by AAP(WFX130) and data analyzed by SPSS and EXCELL soft wares. Results: The results showed that concentration average of Hg ,Zn and Cd was zero during the sampling and concentration average of As,Pb and Cr in drinking water wells were 0.0033, 0.0788 and 0.01 mg/l respectively. Conclusion: Findings indicated that concentration average of heavy metals in all studied drinking water wells were lower than standard limit and no significant difference was observed during 4 stages of sampling , consequently ,drinking water of the mentioned wells are not polluted to the heavy metals.

Keywords: Aleshtar, Heavy metals, Atomic absorption, Drinking water

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