Yoni Goldsmith |  yonig@mail.huji.ac.il

Manufacturer and model:
Gas Chromatography – isotope ration mass spectrometer (GC-iRMS)
(GC Isolink Trace 1310 connected to a Detla V by a ConFlo IV).

General Information:
The CG-iRMS measures the isotopic composition (δ 2 H and δ 13 C) of specific organic
molecules (e.g., alkanes, fatty acids etc.) and can be used for a variety of applications in
earth sciences, environmental sciences, chemistry and biology.

Key Features:
The CG-iRMS can measure a slue of volatile and thermally stable organic molecules.
Organic molecules extracted from sediments, plants, soils etc., are injected as liquids into
the GC, where they are thermally separated into different classes of molecules based on
their mass. Each class of molecules are pyrolyzed in a reactor, converted to gas (CO 2 or
H 2 ) and injected into the iRMS. In the iRMS, the gas is ionized, accelerated and sent
through a magnetic-sector mass analyzer that separates the isotopes. The magnetic field
bends the isotopes that collide into Faraday detectors, where they are counted.

Contact person:
Yoni Goldsmith yonig@mail.huji.ac.il

A figure of the instrument: