An Evaluation of Purging Methods for Organics in Water
Our evaluation of the purge and trap method as employed for analysis of over 2,000 drinking water samples is outlined in detail in this paper. Necessary documentation of this evaluation includes detector linearity, reproducibility of standards and detection levels. Variations of the purge method include different types of instrumentation. Discussion of purging units, desorbing devices and a cryogenic loop are included. An evaluation would not be complete without a discussion of the problems one can encounter using the purge methods.
KeywordsReporting Integrator Trap Method Trap Technique Chloroform Concentration Instrument Blank
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