
Molly Karnes
SIRF Technical Manager
- mokarnes@iu.edu
- 812-856-1556
- MSBII 001A
Molly comes to us from UC Merced, where she received her MS looking at carbonate isotopes in shark teeth.
The Stable Isotope Research Facility (SIRF) in the Department of Earth and Atmospheric Sciences houses four isotope ratio mass spectrometers dedicated to analysis of hydrogen, carbon, nitrogen, oxygen, and sulfur. Since 2009, SIRF has occupied space in the new Multidisciplinary Science Building II, where it continues a long tradition of serving faculty, students, and visitors to Indiana University, as well researchers from other institutions.
The Stable Isotope Research Facility employs a range of continuous-flow inlets for the analysis of solid, liquid, and gas samples. These include two Costech ECS4010 Elemental Analyzers for solid and liquid samples (carbon, nitrogen, and sulfur), a ThermoFinnigan Gas Bench for carbonate minerals, waters, and air samples, and two Thermo Trace Ultra GCs for compound-specific isotope analysis. The MAT253, Delta Plus XP, and MAT252 are configured with variable volume dual-inlets for materials prepared off-line. In addition, SIRF houses a methane preconcentrator inlet for the hydrogen and carbon isotopic analysis of methane, ethane, and propane.
We welcome inquiries from faculty, students, and professionals. Fees are charged for analytical services.
For further information contact:
SIRF Technical Manager
Molly comes to us from UC Merced, where she received her MS looking at carbonate isotopes in shark teeth.
Assistant Scientist, Earth and Atmospheric Sciences
Director, Stable Isotope Research Facility
My research makes use of geochemical proxies to reconstruct the paleoclimatic history of the earth.
SIRF Laboratory
Department of Earth and Atmospheric Sciences
Indiana University
702 N. Walnut Grove Room 001A
Bloomington, IN 47405-1405 U.S.A.