Tracing the origin of salts in groundwater by Sr isotopic composition (the Crystalline Complex of the southern Sinai, Egypt)

Hydrogeochemical Evaluation of the Quaternary Aquifer in El Sadat City, Egypt

“…The chosen ion ratios, which are found to be important in the present study ( through the addition of sodium salts of terrestrial origin to the water. The increase in the concentration of the Na + ions in these water samples reflects meteoric origin of water recharge where [12] concluded that the increasing Na + ions might have theoretically originated by dissolution of sodium-bearing silicates from the country rocks. This is due to the complete flushing of marine deposits or old sea water through movement of rain water that horizontally or vertically infiltrated and settled in siliceous aquifer materials in the past time.…”

“…Todd [9] categorized groundwater according to this ratio as follows: normal good groundwater (less than 1), slightly contaminated water (more than 1 and less than 2), moderately contaminated water (2-6), seriously contaminated water (more than 6-15) and highly contaminated water (more than 15) [12].…”

Assessment of Groundwater Quality for Different Uses Case Study: El Minya Governorate, Egypt

“…The rNa + /rCl -equivalent ratios are less than unity(<1) in water wells collected in 2011 and 2015 indicating that water was marine origin (Starinsky et al, 1983). Water wells collected in 2013 & 2014 have rNa + /rCl -somewhat higher than 1 indicating that the water was affected by meteoric water via leaching and cation exchange process.…”

Application of density-dependant finite element model for studying seawater intrusion in coastal aquifer of Ras El-Hekma, Northwestern Coast, Egypt

“…Group I (SWMI<0.5) with TDS values range from 722.8 to 3068 mg/L at sites 1, 2, 3, 4, 5, 14 and 15 affected by rainfall and Group II with TDS ranges from 4993 to 7408 mg/L at sites 8, 9, 10 and 12 which may be affected by overpumping and mineral dissolution and finally, Group III with TDS values which ranges from 8761.8 to 10048 mg/L at sites 6, 7, 13 and 17 and may be affected by mixing with seawater. As ionic ratios are commonly used to evaluate the salinization sources and origin of groundwater in coastal aquifers (Barbecot et al, 2000), Na/Cl ratio can discriminate brackish and saline water, where the values of this ratio are higher than unity in fresh and meteoric water while it is less than unity in seawater or saline water (Starinky et al, 1983). In this study, most groundwater samples (Table 3) a Br/Cl ratio of 0.005 in Mediterranean countries (Jones et al, 1999;Vengosh et al, 1999).…”