International Journal of Analytical Chemistry / 2014 / Article / Fig 4

Research Article

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

Figure 4

Sketch of the lower side of a gas sampling tube in the vertical position: the exhaled breath extract (the isooctane phase) is located within the cylindrical hole.