Abstract
Ionic Liquids is called also room temperature molten salt, its performance is mainly dependent on composition of cation and anion, and through molecular design the adjustment. And the traditional organic solvent, water, supercritical fluid and chemical reaction than solvent, ionic liquid in the following several aspects to show its prominent advantages. OP-BF4 ionic liquid is prepared by the double decomposition reaction of OPB and NaBF4. The ionic liquid at room temperature used in the experiment has a significant absorption determined by UV spectrum within the range of 200-400nm, the maximum absorption wavelength of OP-BF4 ionic liquid is 255nm. The standard working curve of OP-BF4 ionic liquid is y=0.06476+0.00967X (0.99918). The recovery rate of OP-BF4 ionic liquid which is between 96.4% and 102%, is measured by standard addition method in water. The quantitative analysis of OP-BF4 ionic liquids in water using ultraviolet spectroscopy is simple, accurate and reliable.
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