The stable isotopes hydrogen and oxygen (δ2H and δ18O, respectively) in soil water are widely used in ecological studies, which rely on the accurate extraction of unfractionated water from different soil types. Cryogenic vacuum distillation (CVD) is the laboratory-based technique most widely used in eco-hydrological studies. However, the reliability of this technique in reflecting soil water δ2H and δ18O is still of concern.
Click here for original story, Researchers investigate reliability of cryogenic vacuum distillation for soil water extraction
Source: Phys.org