RT Journal Article
T1 Application of hydrochemical and multi-isotopic (87Sr/86Sr, δ13C-DIC, δ2H-H2O, δ18O-H2O) tools to determine contamination sources and processes in the Guadalhorce river basin, Southern Spain
A1 Glok-Galli, Melisa
A1 Vadillo-Pérez, Iñaki
A1 Jiménez-Gavilán, Pablo
A1 Ojeda-Rodríguez, Lucía
A1 Urresti-Estala, Begoña
A1 Martínez, Daniel E.
K1 Agua - Química
AB The integrated use of multi-isotopic (87Sr/86Sr, δ13C-DIC, δ2H-H2O, δ18O-H2O) and hydrochemical data was applied in the highly anthropized Guadalhorce river basin, southern Spain, to improve the knowledge about water contamination sources and processes and to achieve improved water resource management. The results obtained highlight the impor- tance of the use of isotopes as tracers of pollutants. DIC, δ2H-H2O, δ18O-H2O and δ13C-DIC allowed differentiating two water recharge end members: direct rainwater, infiltrated into the upper and lower detritic aquifers of the sub-basins, and the Guadalhorce dam system, which act as a source in some groundwater and surface waters of the lower sub- basin. 87Sr/86Sr data supported the existing conclusions in relation to pollution sources in the study area. The Triassic basement (evaporites) of the carbonate and detritic aquifers of the basin generally controls the natural 87Sr/86Sr com- position in waters of the upper sub-basin. Only one groundwater sample reflects the influence of a human organic source (sewage) in its composition. On the other hand, mixing of human inorganic (fertilizers and detergents) stron- tium sources is required to explain the 87Sr/86Sr contents of the lower sub-basin waters. Discriminating the use of do- mestic detergents as another anthropogenic source of strontium and sulphate in waters is a novel finding in this research. The conclusions reached can be extrapolated to other anthropized basins
PB Elsevier
SN 0048-9697
YR 2022
FD 2022
LK https://hdl.handle.net/10630/35645
UL https://hdl.handle.net/10630/35645
LA eng
NO https://openpolicyfinder.jisc.ac.uk/id/publication/15487
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026