Abstract
Misunderstandings and misconceptions have held back the use of the sensitive helium ionization detector, particularly for the analysis of liquid samples. Some recent work on this detector and the development of fused-silica capillary columns have led to new applications utilizing both tools. In this report we evaluated helium ionization detector applications for the analysis of liquid samples. The water content of various solvents and reagents was determined using a split injection technique and a Carbowax fuxed-quartz column. We used both isothermal and temperature-programmed conditions. Concentrations as low as 2 ppm of water were detected. The system is linear up to 700 ppm although the lower detection level is dependent upon the water present in the system blank. Other potential applications as well as the advantages and limitations of the helium ionization detector will be discussed.
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