GROUND WATER HEAVY METALS CONTENT IN MID NILE DELTA REGION | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 6, Volume 30, Issue 3, March 2005, Pages 1787-1794 PDF (363.95 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2005.226390 | ||
| Author | ||
| Hamida M.A. El-Sanafawy | ||
| Soil, Water and Environment Res. Inst., ARC, Cairo, Egypt | ||
| Abstract | ||
| The current study has been carried out to investigate the concentration of heavy metals; Pb, Cd, Ni, Zn, Cu and Mn in ground water of the area located between longitudes 30o/30' and 31o/43' E and latitudes 30o/57' and 31o/30' N covering a total area of 37974 km2. The studied area included four governorates; El-Gharbia, Kafr El-Sheikh, El-Dakahlia and Damietta up to the Mediterranean sea/or Burullus lake in the north. Fifteen ground water samples were taken from soil profiles, twelve of them were irrigated with water drains which extended to the pump stations which rise the wastewater to the Mediterranean sea and /or Burullus lake. These area which suffering from the water shortage and obligate to reuse drainage water again in planting. The rest of studied soil profiles were irrigated with canal waters. Results revealed that the heavy metals content in the studied ground water samples can be arranged according to their contents in this order: Zn > Cu > Mn > Ni > Pb > Cd and also showed that the concentration of Cd, Ni, Cu, Zn and Mn were higher than the permissible concentration limits for irrigation water, according to FAO , 1985, while the concentration of Pb was lower than the permissible limit. Statistical analysis revealed that Pb, Cd, Zn and Ni were slightly increased with the depth of ground water while Cu and Mn have an opposite trend. Other relations of significant positive correlation were found between Mn and each of Cu (0.601*), Zn (0.576*), Ni (0.591*) and highly significant positive correlation between Ni and each of Pb & Zn (0.733** & 0.660**) due to the isomorphous substitution in soils. Heavy metals are not normally included in routine analysis of regular irrigation water but more attention should be paid to them and printing it harmful effect to public health. | ||
| Keywords | ||
| Heavy metals; pollution; groundwater; pump stations | ||
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