A Method for Sampling Halothane and Enflurane Present in Trace Amounts in Ambient Air

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A method for the sampling of small amounts of halothane and enflurane in ambient air is described. Sampling is performed by drawing air through a sampling tube packed with Porapak Q,± which absorbs the anesthetic agent. The amount absorbed is determined by gas chromatography after thermal desorption. This method can be used for “spot” or personal sampling or for determining mean whole-room concentrations over relatively long periods (several hours).

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