Hydrogeochemical Assessment of Groundwater in the Precambrian Rocks, South Eastern Desert, Egypt  

作　　者：Ashraf Embaby Moumtaz Razack Mathieu Lecoz Gilles Porel Ashraf Embaby;Moumtaz Razack;Mathieu Lecoz;Gilles Porel(Department of Hydrogeology, University of Poitiers, Poitiers, France;Geology Department, Faculty of Science, Sohag University, Sohag, Egypt)

机构地区：[1]Department of Hydrogeology, University of Poitiers, Poitiers, France [2]Geology Department, Faculty of Science, Sohag University, Sohag, Egypt

出　　处：《Journal of Water Resource and Protection》2016年第3期293-310,共18页水资源与保护（英文）

摘　　要：This work refers to the characterization of the hydrochemistry of the southern part of the Eastern Desert in Egypt, on the basis of physico-chemical properties of groundwater occurring in the fractured Precambrian rocks inland and in sedimentary formations on the coastline of the Red Sea. Thirty-five groundwater samples have been collected from the study area for hydrochemical investigations to understand the sources of dissolved ions and assess the chemical quality of the groundwater. Several methods were used to interpret the hydrochemical data, i.e. graphical methods, principal components analysis, ions exchanges indices and saturation indices of various minerals. The results show that the major ionic relationships are Na⁺ > Ca²⁺ > Mg²⁺ and Cl^&#45 > > HCO^3&#45 and that groundwater chemical characteristics are controlled by natural geochemical processes but also, to a lesser extent, by anthropogenic activities. Natural minerals dissolution, ion exchanges and evaporation play a prominent role in the ion enrichment of groundwater. A comparison of groundwater quality in relation to WHO water quality standards proved that most of the water samples are not totally suitable for drinking water purpose.This work refers to the characterization of the hydrochemistry of the southern part of the Eastern Desert in Egypt, on the basis of physico-chemical properties of groundwater occurring in the fractured Precambrian rocks inland and in sedimentary formations on the coastline of the Red Sea. Thirty-five groundwater samples have been collected from the study area for hydrochemical investigations to understand the sources of dissolved ions and assess the chemical quality of the groundwater. Several methods were used to interpret the hydrochemical data, i.e. graphical methods, principal components analysis, ions exchanges indices and saturation indices of various minerals. The results show that the major ionic relationships are Na⁺ > Ca²⁺ > Mg²⁺ and Cl^&#45 > > HCO^3&#45 and that groundwater chemical characteristics are controlled by natural geochemical processes but also, to a lesser extent, by anthropogenic activities. Natural minerals dissolution, ion exchanges and evaporation play a prominent role in the ion enrichment of groundwater. A comparison of groundwater quality in relation to WHO water quality standards proved that most of the water samples are not totally suitable for drinking water purpose.

关 键 词：Eastern Desert Pre-Cambrian Rocks GROUNDWATER HYDROCHEMISTRY Principal Components Analysis EGYPT 

分 类 号：P64[天文地球—地质矿产勘探]