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| Determination of the Purity of［Mmim］DMP Ionic Liquid Rapidly by Utilizing Ultraviolet Spectrophotometry |
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| DOI：10.11980/j.issn.0254-508X.2014.12.007 |
| Key Words:［Mmim］ DMP ionic liquid purity UV spectrophotometry aqueous solution biomass |
| Author Name | Affiliation | | 许俊鑫 | 华南理工大学轻工与食品学院, 制浆造纸工程国家重点实验室,广东广州, 510640 | | 李友明 | 华南理工大学轻工与食品学院, 制浆造纸工程国家重点实验室,广东广州, 510640 | | 李一玫 | 华南理工大学轻工与食品学院, 制浆造纸工程国家重点实验室,广东广州, 510640 | | 侯 轶* | 华南理工大学轻工与食品学院, 制浆造纸工程国家重点实验室,广东广州, 510640 |
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| Abstract:The paper explored the possibility of utilizing ultraviolet spectrophotometry to determine the purity of synthetic ［Mmim］ DMP ionic liquid rapidly. Firstly, the stability of ［Mmim］DMP aqueous solution was studied, the results indicated that the ［Mmim］ DMP ionic liquid aqueous solution had better stability within 24 hours after preparation and that preferable linear relationship between concentration and absorbancy of ionic liquid emerged at 211nm of the maximum absorption wavelength. Then a working curve for standard sample of ［Mmim］DMP aqueous solution was plotted and, used to determine the purity of the ［Mmim］DMP sample prepared in lab, the recovery rate was analyzed. The result indicated that using ultraviolet spectrophotometry to determine the purity of ［Mmim］ DMP was rapid and accurate and the recovery rate ranges from 97% to 103%. |
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