Abstract: A novel method for the rapid determination of high concentration benzene indoor air using ionic liquid-based ultraviolet spectrophotometry（UV）has been developed. The effects of different extraction conditions(such as ionic liquids support，ionic liquids volume，enrichment time，extraction temperature，extraction time and so on)on extraction efficiency are investigated. The optimal conditions are as follows：absorbent cotton for carrier，enrichment time 1 h，extraction temperature 20℃，extraction time 10 min，extraction volume of ［BMIm］NTf₂ 30μl. The results show better enrichmennt effects for high concentration benzene vapor when using ultraviolet spectrophotometry for detection. This method is simple，fast，convenient and easy for detection. Besides，the cost is quite low. Satisfactory results can be obtained for high concentration benzene determination.

摘要： 建立了基于离子液体的紫外分光光度法快速测定室内空气中高浓度苯的新方法。考察了离子液体载体、富集时间、萃取温度、萃取时间以及离子液体体积等因素对萃取效率的影响。通过条件优化得出最佳实验条件：以脱脂棉纤维为载体，富集时间1 h，20℃超声10 min，选用离子液体［BMIm］NTf₂ 的体积为30 μl。结果表明，用紫外分光光度法检测的离子液体对高浓度苯蒸气的富集效果明显。本方法装置简单、操作方便、快速并且成本低易于检测，对高浓度苯可以得到较满意的实验结果。

关键词: 1-丁基-3-甲基咪唑六氟磷酸盐, 1-丁基-3-甲基咪唑双三氟甲烷磺酰亚胺盐, 苯, 紫外分光光度法, 富集