Page:NIOSH Manual of Analytical Methods - 9109.pdf/25

 METHAMPHETAMINE. . . on Wipes by SPE: METHOD 9109, Issue 1, dated 17 October 2011 - Page 25 of 33

Figure 1. Typical chromatogram of mixed heptafluorobutyryl and trimethylsilyl derivatives by GC-MS in scan mode (time in minutes)

GC Peak Identification: See Table 11 for identification of numbered GC peaks. (But note that retention times in Table 11 do not correspond to those in Figure 1 because a different DB-5 column and instrument was used.)

NIOSH Manual of Analytical Methods (NMAM), Fifth Edition

Method rev. 1.1.1