تلوث المياه الجوفية بالعناصر الثقيلة بمنطقة طرابلس

Abstract

Tripoli and the surrounding areas are distinguished with several agricultural and industrial activities which produce several residuals that contain heavy metals. These metals might be arrived to the groundwater with different ways. The goal of this study is to determine the groundwater contamination with heavy metals because of that residuals. According to the expected sources of contamination 64 wells were chosen that have been used for domestic, agricultural, and industrial activities. The heavy metals included in this study are Zinc (Zn), Chromium (Cr ), Cadmium ( Cd ), Mercury ( Hg ), and Lead ( Pb ). To achieve the goal of this study some field and laboratory investigations were carried out that include: the lithological structure and hydrogeological properties of the aquifer, determining the water table level, and processing the chemical analysis on the collect samples. The results of the study showed that, the temperature and pH values of samples were closed in spite of the different well’s depths. Also, natural groundwater flow is in the northwest direction. Concerning the TDS values most of the wells were polluted according to standard specifications. The mentioned heavy metals were existed with different concentrations. However, in the most samples were below the permissible limit according to the standard specifications except Hg in well (B₁₅), Cr in wells ( B₁₅, B₁₉, D₂ ), and Cd in well (B₁₉ ). Therefore, the area is considered unpolluted with heavy metals.