title: Characterization of the Oum Er Rbia (Morocco) high basin karstic water sources by using solid state nuclear track detectors and radon as a natural tracer.
abstract: Uranium and thorium contents as well as radon alpha-activities per unit volume were evaluated inside different water samples by using a method based on calculating the CR-39 and LR-115 type II solid state nuclear track detectors (SSNTDs) detection efficiencies for the emitted alpha-particles and measuring the resulting track density rates. The validity of the SSNTD technique utilized was checked by analysing uranyl nitrate (UO2(NO3)26H2O) standard solutions. A relationship between water radon concentration and water transmission of different water sources belonging to two regions of the Middle Atlas (Morocco) water reservoir was found. The influence of the water flow rate as well as the permeability and fracture system of the host rocks of the sources studied was investigated.
authors.affiliation: Laboratory of Hydrogeology, Faculty of Sciences Semlalia, University Cadi Ayyad, Marrakech, Morocco.
authors.forename: N
authors.initials: N
authors.lastname: Khalil
authors.forename: M A
authors.initials: MA
authors.lastname: Misdaq
authors.forename: S
authors.initials: S
authors.lastname: Berrazzouk
authors.forename: J
authors.initials: J
authors.lastname: Mania
mesh_terms: D009018:Morocco; D011834:Radiation Monitoring / Q000379:methods; D011886:Radon / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D011886:Radon