High Resolution Pore Water δ2H and δ18O Measurements by H2O(liquid)−H2O(vapor) Equilibration Laser Spectroscopy

摘要: A new H2O(liquid)−H2O(vapor) pore water equilibration and laser spectroscopy method provides a fast way to obtain accurate high resolution δD δ18O profiles from single core samples saturated unsaturated geologic media. The precision accuracy of the H2O(liquid−H2O(vapor) was comparable or better than conventional IRMS-based methods, it can be conducted on cores that contain volumetric contents as low 5%. Significant advantages isotopic analysis include dual hydrogen- oxygen-isotope assays small samples, consumable instrumentation costs, potential for field-based hydrogeologic profiling. is sufficient detailed vertical depth in geologic, soil, lacustrine water, dramatically reducing cost obtaining by wells physical extraction methods. In additi...