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angellove3626木虫 (著名写手)
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【求助完毕】10金币修改一段英文（语法、逻辑），如满意就追加金币
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0.6 gram of 1,4,5,8-tetrahydroxy-9,10-Anthracenedione(3.93mml) was dissolved in 160ml DMF, 6.0 gram of FeCl3.6H2O was then added and the resulting mixture was left stirring for 16h at room temperature. add 700ml de-ionized water under stiring standing 3h, Leaching the water and DMF. Then was add into 150 ml de-ionized water under ultrasonication to break Cl-1. After 2h, The precipitate was then collected by filtration, thoroughly washed with water. Then was added 100 ml ethyl acetate into the above solid white stiring constantly, After 7h, leaching of the product, The yield was about 80%. [ Last edited by qingshaojun0823 on 2009-9-4 at 21:27 ] |
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pitlord999
金虫 (小有名气)
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polymerpark(金币+3,VIP+0):好建议，谢谢应助 8-25 06:47
angellove3626(金币+5,VIP+0):3KS,欢迎以后继续合作 8-25 09:58
polymerpark(金币+3,VIP+0):好建议，谢谢应助 8-25 06:47
angellove3626(金币+5,VIP+0):3KS,欢迎以后继续合作 8-25 09:58
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试着修改了一下。另外，楼长尽量以后不要用数字做句子的开头吧，不合规矩，：） First, 0.6 gram of 1,4,5,8-tetrahydroxy-9,10-Anthracenedione(3.93mml) was dissolved in 160ml DMF, and 6.0 gram of FeCl3.6H2O was added to the same solution. The mixture was then left stirring for 16 hours at atpmosephere temperature. Following this, 700ml de-ionized water was added under stiring standing for 3 hours to leach the water and DMF. Then another 150 ml de-ionized water was added under ultrasonication to break Cl-1. After 2 hours, the precipitate was collected via filtration, completely washed with water. Then 100 ml ethyl acetate was added into the aforementioned solid white while stiring constantly. After another 7 hours, the product was leached with a yield rate of approximately 80%. [ Last edited by pitlord999 on 2009-8-24 at 16:46 ] |
2楼2009-08-24 22:32:23
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3楼2009-08-24 22:42:11
goodtimega
铁杆木虫 (著名写手)
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polymerpark(金币+2,VIP+0):谢谢应助 8-25 06:47
angellove3626(金币+5,VIP+0):3KS，感觉还不错 8-25 09:59
polymerpark(金币+2,VIP+0):谢谢应助 8-25 06:47
angellove3626(金币+5,VIP+0):3KS，感觉还不错 8-25 09:59
| Following the dissolvation of 0.6 gram 1,4,5,8-tetrahydroxy-9,10-Anthracenedione(3.93mml) in 160ml DMF, equal amount of FeCl3.6H2O was added to the same solution. The mixture was then left stirring for 16 h at ambient temperature. Consequently, 700ml de-ionized water was added under stiring standing for 3 h to leach the water and DMF. Another 150 ml de-ionized water was added under ultrasonication to break Cl-1. After 2 h, the precipitate was collected via filtration, completely rinsed with water. Then 100 ml ethyl acetate was added into the aforementioned solid white through constantly stiring. After another 7 h, the product was leached with a yield rate of approximately 80%. |
4楼2009-08-24 23:41:36