TC/EA High Temperature Conversion / Elemental Analyzer

Thermo Scientific TC/EA is the technological breakthrough bringing the benefits of continuous flow IRMS to on-line oxygen and hydrogen isotope ratio analysis on solid and liquid bulk samples.

For many years the on-line isotope ratio analysis of organic bulk samples for 13C/12C, 15N/14N and 34S/32S have been performed rapidly, easily and precisely using a conventional Elemental Analyzer – continuous flow isotope ratio MS (IRMS). Measurement of 18O/16O and D/H ratios in organic and inorganic matter had been restricted to off-line sample preparation in the past. The Thermo Scientific TC/EA is the technological breakthrough offering the benefits of continuous flow IRMS to on-line oxygen and hydrogen isotope ratio analysis of solid and liquid bulk samples.

Direct Analysis of 18/O/16O and D/H in Organic and Inorganic Samples

  • Automated analysis with high sample throughput
  • Only small sample amounts required
  • Low blanks and negligible memory
  • Oxygen isotope ratios from organic compounds, water and selected inorganic compounds
  • Hydrogen isotope ratios from organic compounds and water
  • Nitrogen and oxygen isotope ratios from nitrates
  • Quantitative high temperature conversion, also referred to as pyrolysis, is a new technique in which oxygen present in a compound is converted to CO, and hydrogen contained in a compound is converted to H2.
  • The process is rapid and quantitative in a reducing environment at high temperature, typically exceeding 1400°C.
  • The TC/EA preparation system and ConFlo III interface combination facilitates the conversion reaction, separation of reaction gases, transfer into the IRMS and referencing against standard gases.
  • The proprietary reactor consists of a glassy carbon tube with glassy carbon filling, ensuring that neither sample nor reaction gases can get into contact with oxygen containing surfaces while at high temperature.
  • Only this technology enables memory-free conversion reactions with no restrictions on compound type.
  • The reaction gases are separated in an isothermal gas chromatograph, which also is part of the TC/EA.
  • The gases are admitted to the IRMS via the ConFlo III interface.
  • The ConFlo III interface allows automatic sample gas dilution and generation of reference gas pulses, enabling individual referencing of each sample gas peak.

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