77
91
105
121
164
149
121
149
77
91
105
164
29
43
55
69
83
97
111
125 140
168
196
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210
29
43
55
70 83
97
111
125
140
168
196
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
A
B
m/z
m/z
OH
HO
OH
Fig. 5.16 Mass spectra of 6-methyl-2-isopropylphenol and 4-methyl-2-isopropylphenol (a) as well
as 1-tetradecanol and 1-tetradecene (b) exhibiting high similarity, respectively
118
5 GC/MS Data Evaluation