Organic geochemistry

Lab # 1233

The organic geochemistry lab is designed to provide the capability to develop scientific understanding of organic compounds in solid, liquid and gaseous samples (e.g., soils, sediments, waters, biological materials) with a continuous work-flow between freeze-drying, solvent extraction, fractions separation, purification, derivatization, and ultimately the compound specific structural and isotopic analysis by gas chromatography–mass spectrometry (GC-MS) and gas chromatography–combustion/pyrolysis–isotope ratio mass spectrometry (GC-C/P-IRMS).

 

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Agilent Technologies HP 61800A GC

The GCD system furnishes qualitative structural and quantitative information for quick identification of a broad range of organic compounds. It consists of a HP 5890 gas chromatograph (GC) with split/splitless injector and an electron ionization (EI) detector, all controlled by a data system (GCD software, HB Vectra 486).

 

 

 

 

 

 

 

 

 

   Contact: Jorge.Spangenberg@unil.ch

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Agilent Technologies GC-MSD

The GC-MSD system is used to obtain molecular structural and quantitative information on complex mixtures of organic compounds. It is based on a HP 6890 gas chromatograph equipped with a split/splitless and an on-column capillary injector ports, a 5973N mass selective detector (MSD) with diffusion pump. It has electron ionization (EI) and it is single ion monitoring (SIM) capable, which increases sensitivity 5-100 times. The GC is also equipped with a flame ionization detector (FID) for quantitative analysis.

 

 

 

 

 

 

 

 

 

 

      Contact: Jorge.Spangenberg@unil.ch

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The GC-C/P-IRMS system

The GC-C/P-IRMS consists of a HP 6890 gas chromatograph coupled to a Thermo Fisher Scientific Delta V Plus isotope ratio mass spectrometer via a combustion interface III for online conversion of organic compounds to CO2 and N2 (for carbon and nitrogen isotope analysis) and an online pyrolysis interface for quantitative conversion of organic H and O to H2 or CO (for hydrogen and oxygen isotope analysis).

   Contact: Jorge.Spangenberg@unil.ch

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CH-1015 Lausanne
Switzerland
Tel. +41 21 692 44 00