Abstract
A gas chromatographic method, utilizing mass-selective detection, is described for the measurement of bis(chloromethyl) ether (BCME) in air. The method involves preconcentration of BCME on a porous polymer sorption tube, followed by solvent desorption and derivatization to bis(p-fluorophenoxymethyl) ether (BFPME) using p-fluorophenolate. The derivatization reaction is quantitative and specific, forming only one product when reacted with BCME. Laboratory validation of the procedure using sorbent tubes spiked with BCME at levels equivalent to a 10 L air sample of 0.1−2 ppb (v/v) showed that the overall method recovery is 94 ± 3%. The limit of detection under standard instrumental operating conditions is estimated to be 0.01 ppb for a 10 L air sample. Two sorbents, Tenax TA and Tenax GR, were evaluated as potential collection media for BCME. Sorbent tubes containing Tenax TA spiked with BCME were stored for up to 7 days without significant losses. In the absence of a reliable, broadly applicable, and fully v...
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