Analysis of stable isotopes of nitrates in water samples by mass spectrometry

Abstract

Currently, a major concern revolves around nitrate pollution affecting various rivers, lakes, and underground aquifers in the kingdom. To assess the extent of this contamination, in-depth analyses of water samples are required. The results of these analyses reveal a daily increase in nitrate levels in the water, with detrimental consequences for the environment and human health. Faced with this issue, researchers are exploring techniques to eliminate nitrates from the water. Before undertaking this elimination, it is imperative to trace the origin of nitrates using more advanced methods. Among these, the isotopic method, renowned for its precision and effectiveness, emerges as the optimal solution. To address this specific problem, the National Center for Energy, Sciences, and Nuclear Techniques, in collaboration with the International Atomic Energy Agency, has committed to this study. The main objective is to identify the origin of nitrates using the isotopic method, involving the analysis of surface water samples through isotopic mass spectrometry. Following the analysis of the obtained results, it was observed that the primary source of nitrate pollution predominantly lies in the waste present in manure zones and septic tanks. This observation underscores the importance of understanding and addressing the specific origins of this pollution to implement effective solutions.