The Stable Isotope Laboratory is dedicated to measuring the stable isotope ratios (¹⁸O and ²H) of natural water samples. Our goal is to provide analytical services for isotope-based environmental and hydrological research. Primarily serving hydrogeology applications, services are also extended to researchers in biology, medicine, environmental engineering, and anthropology.

The laboratory is equipped with 1 unit of Los Gatos LT-100 Model Stable Isotope Analyzer coupled with an integrated CTC Analytics PAL System Autosampler.

Laboratory procedures strictly adhere to International Atomic Energy Agency (IAEA) quality standards:

Aggarwal, P.K., Aráguas-Aráguas, L., Kulkarni, K.M., Kurttas, T., Newman, B.D. and A. Tanweer, 2009. Laser Spectroscopic Analysis of Liquid Water Samples for Stable Hydrogen and Oxygen Isotopes, IAEA Training Series No.35, 36p., Vienna, Austria. (www.iaea.org/topics/water)

Maximum analytical uncertainties are ±2‰ for Deuterium (²H) and ±0.3‰ for Oxygen-18 (¹⁸O). All reported analytical values are normalized to the VSMOW2-SLAP2 international reference scale.

Natural water samples should be collected as close to the source as possible (IAEA, 2017). Well sampling requires purging at least three well volumes prior to collection. Snow samples must thaw naturally at room temperature away from sunlight. Precipitation collection should follow GNIP manuals (Precipitation Sampling Document).

Samples must be stored in 50 ml clean plastic or glass bottles, filled completely to eliminate air bubbles, tightly sealed, protected from heat/sunlight, and delivered promptly.

Address: Hacettepe University, Dept. of Geological Engineering, Div. of Hydrogeological Engineering, 06800 Beytepe / Ankara / TURKEY
Phone: +90 (312) 297 77 00  |  Fax: +90 (312) 299 20 34
E-Mail: jeo@hacettepe.edu.tr