Gas Chromatography - Tandem Techniques - Examples of GC/MS Spectrometry Applications > Analysis of Waxes and Lipid Type Materials > Page 80


. An example of the chromatograms and spectra obtained are shown in figure 65. Figure 65A is the total ion current chromatogram from a sample of Rhine river water containing 200 ppt of the herbicides Atrazine and Simazine. The peaks are depicted somewhat enlarged in the insert. Figure 65 B shows a section of the same chromatogram presented in the selected ion mode. Atrazine (eluted at 16. 30 minutes) and Simazine (eluted at 16.36 min.) are shown.

Figure 65. Chromatogram and Spectra from a Sample of River Water Containing 200 ppt of the Atrazine and Simazine (after. ref. 25.