title: Uranium isotopes in groundwater from the "Jeffara coastal aquifer" (southeastern Tunisia).
abstract: The distributions of (238)U and (234)U in groundwater from the "Jeffara aquifer" were studied by using alpha spectrometric methods. The concentration ranges of (238)U and (234)U/(238)U activity ratios were 1.34 +/- 0.17 to 3.43 +/- 0.38 ppb, and 1.43 +/- 0.23 to 1.82 +/- 0.27 respectively. Variations in concentrations can be related not only to lithostratigraphic formations but also to different origins of groundwater. U content of Jeffara are found very similar to those of Continental Intercalaire aquifer in both El Hamma and Chenchou regions, indicating that the Continental Intercalaire is the dominant source of the groundwater.
authors.affiliation: Laboratory of Radio-Analysis and Environment, National School of Engineering of Sfax, Route de Soukra BP 1173, 3038 Sfax, Tunisia. frihadj@yahoo.fr
authors.forename: Friha
authors.initials: F
authors.lastname: Hadj Ammar
authors.forename: Najiba
authors.initials: N
authors.lastname: Chkir
authors.forename: Kamel
authors.initials: K
authors.lastname: Zouari
authors.forename: Zohra
authors.initials: Z
authors.lastname: Azzouz-Berriche
mesh_terms: D005618:Fresh Water / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D011834:Radiation Monitoring; D013696:Temperature; D014416:Tunisia; D014501:Uranium / Q000032:analysis*
chemical_list: D014501:Uranium