Figure 2: Typical GC-MS chromatography and spectra of GSM and 2-MIB. (A) Total ion chromatography (TIC) of water sample with 2-MIB and GSM spiked, extraction ion chromatograms (XIC) of m/z 95 for 2-MIB (B) and m/z 112 for GSM (C), spectra of 2-MIB (D) and GSM (E).