... cabonyl : Dựng phenylhydrazin Nhúm chc Than bựn Than nõu Than ỏ Antraxit -COOH 4-5 1-10 0-0,1 -OH 2-8 3- 2 0-0,5 1 ,3- 3,5 0,5-5 0, 03 -CO 1 -3 3-4 2 -3 -O- 2 0,1 0,1 -OCH3 Phng phỏp trớch ly bng dung mụi ... chc c trng 33 00 30 30 2940 2925 2860 1700 1600 1500 138 0 130 0-1000 900-700 -OH, -NH (streching) C-H thm (streching) Aliphatic C-H -CH3, CH2 C-H C=O Aromatic -C=C, -C=O Aromatic C=C, CH3 i xng -CH2 ... bitum A l sn cú than cũn bitum B v C l cỏc sn phm to thnh quỏ trỡnh phõn hu nhit ca than Loi than Than bựn Than nõu Than ỏ Bitum A (%) 8-22% 2,5-15% 0,1-0,5% Thy rng lng bitum A than ph thuc vo...