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3Â¥2009-02-12 18:15:19
ckj33
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clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-12 21:03
clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-12 21:03
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2Â¥2009-02-12 16:33:31
shitou0307
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clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-13 18:53
clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-13 18:53
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ºÇºÇ ÎÒ¾õµÃÄãÐèÒªÒ»¸öÖ¸µ¼ÀÏʦ¡¤¡¤¡¤¡¤¡¤¡¤ÏÈ´óÁ¿Ñо¿ÎÄÏ×°É£¬´ÓÎÄÏ׿ªÊ¼¡£ÊµÑéÒ»µ©¿ªÊ¼ÁËÒÔºó½øÕ¹¾Í¿ìÁË 2Â¥µÄÒâ˼ÊÇÈÃÄãÏȰÑÕâ¸öÖ²ÎïÖеÄÓйػ¯Ñ§³É·ÖµÄÀí»¯ÐÔÖÊŪÇå³þ£¬È»ºó¸ù¾ÝÕâЩÀ´È·¶¨ÌáÈ¡·ÖÀëµÄ·½·¨£¬»òÕß¿ÉÒԲο¼ºÍÌ×ÓÃÀàËÆµÄÐÔÖʵϝºÏÎïµÄÌáÈ¡·½·¨£¬²»ÒªÖ¸ÍûÖ±½Ó¾ÍÄܲ鵽Ïֳɵķ½·¨£¬Òª²»È»Äã×öÁË»¹ÓÐʲôÒâÒåÄØ£¿ |
4Â¥2009-02-12 23:25:20
albert3250
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clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-13 18:53
clkk216(½ð±Ò+1,VIP+0):лл²ÎÓë³æÓÑÌÖÂÛ~~£¡ 2-13 18:53
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i supported ckj33's word whats ur compounds? u have to find the polarity of ur compounds first then choose the solvent to rechromatography that compounds if they are major compounds i think its easy to get them u also have to research some literatures about ur compounds |
5Â¥2009-02-13 00:50:24














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