Page 27 - วารสารปีที่15ฉบับที่1

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μ“√“ß∑’Ë 4 Õߧåª√–°Õ∫∑“߇§¡’∫“ß™π‘¥¢Õߧ«—π∑’ˉ¥â®“°°“√‡º“À≠⓬ÿà¡ «‘‡§√“–Àå‚¥¬‡∑§π‘§ GC-MS

Compounds Formula MW Retention time Area %

Benzyl alcohol C H O 108 5.74 0.81
7 8
Resorcinol C H O 110 8.36 1.46
6 6 2
2,3-Dihydrobenzofuran C H O 120 8.78 1.21
8 8
Diosphenol C H O 168 10.11 2.20
10 16 2
Syringol C H O 154 10.98 4.00
8 10 3
4-Hydroxybenzaldehyde C H O 122 11.15 1.40
7 6 2
Vanillin C H O 152 11.80 4.89
8 8 3
Vanillic acid C H O 168 12.50 0.69
8 8 4
2,6-di-tert-Butyl-p-benzoquinone C H O 220 12.88 1.38
14 20 2
4-tert-Butylcatechol C H O 166 13.16 1.09
10 14 2
2,5-di-tert-Butylphenol C H O 206 13.51 1.61
10 22
5-tert-Butylpyrogallol C H O 182 13.70 1.02
10 14 3
Guaiacylacetone C H O 180 13.78 1.65
10 12 3
Lauric acid C H O 200 14.30 1.57
12 24 2
Syringic aldehyde C H O 182 15.67 0.93
9 10 4
3,4,5-Trimethoxy benzaldehyde C H O 196 16.68 1.42
10 12 4
Palmitic acid C H O 256 19.66 5.22
16 32 2
Oleic acid C H O 282 20.11 2.59
18 34 2
α-Tocopherol acetate C H O 472 31.75 2.09
31 52 3

RT: 5.00 - 35.03 SM: 15G
RT: 25.58
AA: 644778
100
80 RT: 11.80 RT: 19.66 RT: 27.47
AA: 426596
AA: 458699
Relative Abundance 60 RT: 8.36 13.51 RT: 22.42 RT: 29.47
AA: 490226
RT: 14.80
AA: 284553
AA: 178759
AA: 263779
40
20
5.74 AA: 136806 33.94
0
6 8 10 12 14 16 18 20 22 24 26 28 30 32 34
Time (min)
√Ÿª∑’Ë 4 GC-MS Chromatogram ¢Õߧ«—π∑’ˉ¥â®“°°“√‡º“À≠â“ (grass smoke)
°≈ÿà¡øïπÕ≈∑’Ë¡’À¡Ÿà·∑π∑’Ëμà“ß Ê (other substituted known compounds)
phenols) [‡™àπ resorcinol, hydroquinone ·≈– 4- 5. °“√·¬°Õߧåª√–°Õ∫∑“߇§¡’¥â«¬‡∑§π‘§

tert-butylcatechol] °√¥‰¢¡—π (fatty acids) Column Chromatography
·≈– “√Õ◊Ëπ∑’ˉ¡à∑√“∫ Ÿμ√‚§√ß √â“ß∑“߇§¡’ (un- °“√·¬°Õߧåª√–°Õ∫∑“߇§¡’¥â«¬ Sephadex