The Nitrogen Detector in Gas Chromatography

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Abstract
The flameless alkali sensitized detector and the ECD have excellent response characteristics for the general detection of nitrogen-containing compounds. Choosing between these detectors is not a simple matter since they have both advantages and disadvantages. The FASD usually exhibits an order of magnitude of greater sensitivity than the ECD. Although it is very sensitive, it is not totally selective for nitrogen. It also responds to phosphorus, and the phosphorus response is normally about ten times greater than the nitrogen response. The response depends upon the condition of the source and may require frequent adjustments of the source temperature to minimize source aging effects. Response of this detector is dependent upon the structure of the compound and is therefore difficult to predict.