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| THE LIGNIN CONTENT IN BLACK LIQUID OF STRAW AS-AQ BY ULTRAVIOLET SPECTROPHOTOMETER | |
| 作者姓名： | Haiqiang Shi Bingyue Liu Xingqiang Li Longquan Xu Beihai He |
| 作者单位： | 1.State Key Laboratory of Pulp and Paper Engineering，South China University of Technology，Guangzhou 510640;2.Dalian Institute of Light Industry，Dalian 116034 |
| 摘 要： | 1INTRODUCTIONLignin is an aromatic compound. It has strong absorption of ultraviolet radiation but carbohydrates have little absorption. So we use an UV to measure the lignin quantitatively or qualitatively in black liquor from pulping1]. A single benzen… |
THE LIGNIN CONTENT IN BLACK LIQUID OF STRAW AS-AQ BY ULTRAVIOLET SPECTROPHOTOMETER |
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| Haiqiang Shi,,Bingyue Liu,Xingqiang Li,Longquan Xu,Beihai He.THE LIGNIN CONTENT IN BLACK LIQUID OF STRAW AS-AQ BY ULTRAVIOLET SPECTROPHOTOMETER[J].Journal of Tianjin University of Science & Technology,2004,19(Z2). | |
| Authors: | Haiqiang Shi Bingyue Liu Xingqiang Li Longquan Xu Beihai He |
| Institution: | 1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 510640;Dalian Institute of Light Industry, Dalian 116034 2. Dalian Institute of Light Industry, Dalian 116034 3. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology,Guangzhou 510640 |
| Abstract: | The measurement of lignin content in black liquid of straw AS-AQ by ultraviolet spectrophotometer(UV) is discussed in this paper. Different dilution multiple and contrast solutions have an effect on the measured results of the lignin content by UV. The calculation method for the absorption coefficient and the scanning spectrum property of liquor acidified by SO2 are introduced in this paper. |
| Keywords: | ultraviolet- spectrophotometer straw pulp of AS-AQ lignin black liquor |
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