Trace Analysis in End-Exhaled Air Using Direct Solvent Extraction in Gas Sampling Tubes: Tetrachloroethene in Workers as an Example

<table>Representative chromatogram of an end-exhaled air sample from a dry-cleaning worker (machine operator) exposed to tetrachloroethene; tetrachloroethene peak (retention time 5.2 min,<i> m/z</i> 166).</table>

International Journal of Analytical Chemistry

fig9

Figure 9

Figure 9: Trace Analysis in End-Exhaled Air Using Direct Solvent Extraction in Gas Sampling Tubes: Tetrachloroethene in Workers as an Example 