Table 5. GC/MS Results of Pinewood Tar Compounds.

			relative concentration (%)
R.T. (min)	compound	M.W.	pinewood	plywood	coconut shell
2.48	furfural	96	3.38	1.83	0.45
7.02	phenol	94	18.37	3.33	4.02
8.01	3-methyl-1,2-cyclopentanedione	112	1.46	0.94	0.43
8.94	2-methoxyl-phenol	124	4.8	2.44	2.07
10.76	creosol	138	1.56	1.12	1.46
11.43	2-isopropoxyphenol	152	0.78	1.15	0.39
12.08	2-methoxy-4-ethylphenol	152	2.35	1.37	1.53
13.26	2,6-dimethoxyphenol	154	4.83	2.98	2.62
14.41	1,4-methoxy-3-(methoxymethyl)phenol	168	2.47	2.2	2.13
15.38	3,4,5-trimethoxyl-toluene	182	1.41	1.42	1.55
17.37	2,6-dimethoxy-4-(1E)-1-propen-1-y1-phenol	194	1.24	1.27	1.37
18.15	trans-sinapyl alcohol	210	0.66	0.97	1.14