Temperature(Pre) -- Gas Chromatography Question

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Discussion Overview

The discussion revolves around the use of Gas Chromatography (GC), specifically focusing on the Temperature(pre) setting related to thermal conductivity detectors (TCD). Participants share their experiences and seek advice on method development for analyzing gases like CO2, CO, H2, and short-chained hydrocarbons.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about the Temperature(pre) setting for TCD in GC and seeks suggestions.
  • Another participant suggests consulting the Operator's manual or searching online for the specific make and model of the GC to find relevant information.
  • Some participants express a preference for flame ionization detectors (FID) over TCD, questioning the choice of detector for the analysis.
  • A later reply clarifies that the analysis is already set up for TCD due to limited experience with GC and mentions the specific gases being analyzed.
  • There is a note that the manual does not provide clear information regarding the Temperature(pre) setting.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the use of TCD versus FID, indicating differing opinions on the suitability of detectors for the analysis. The discussion remains unresolved regarding the specifics of the Temperature(pre) setting.

Contextual Notes

Limitations include a lack of detailed information in the manual regarding the Temperature(pre) setting and the participants' varying levels of experience with different types of detectors.

rwooduk
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Does anyone here have any experience with GC? I am developing a method for analyses and I understand all the settings but there is one related to the TCD called Temperature(pre). Does anyone have any ideas?

Thanks for any suggestions!
 
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Do you have access to the Operator's manual? Maybe google around for the make and model of your GC. Sometimes you can find manuals online.
 
Why are you using a thermal conductivity detector? Flame ionization detectors are so much better. To be honest, I've never used TCD or electron capture, FID all the way, or mass spec. Is you analysis specific for TCD?
 
Kevin McHugh said:
Why are you using a thermal conductivity detector? Flame ionization detectors are so much better. To be honest, I've never used TCD or electron capture, FID all the way, or mass spec. Is you analysis specific for TCD?

Apologies for the late reply. Simply put we have limited experience using the GC and it is already set up for TCD analysis. I'll be using it for analysis of gases such as CO2, CO, H2 and short chained hydrocarbons.

^^ The manual mentions noting of the Temp(Pre) unfortunately.
 

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