将常规离子液体1-丁基-3-甲基咪唑六氟磷酸盐([Bmim]PF6)与特定萃取剂磷酸三丁酯(TBP)结合，建立了超声辅助的微萃取富集目标物苯酚的方法，研究了萃取剂种类、用量、pH值、超声水浴温度及离子强度等因素对富集效果的影响，得到微萃取的最佳实验条件，对该方法的富集机理进行了探讨. 结果表明，在较少的萃取剂用量(30 mL [Bmim]PF6-30 mL TBP)、较低的水浴温度(273.15 K)及无盐效应和pH值影响的条件下，富集倍数最佳达128. 二元萃取剂对苯酚的高效富集，主要是由于TBP中P==O键与苯酚?OH中的?H缔合，形成配合物.

1-Butyl-3-methyl imidazolium hexafluorophosphate ([Bmim]PF6) and tributyl phosphate (TBP) were combined as a binary extractant to extract phenol. Influencing variables on the enrichment performance of the binary extractant such as the volumes of [Bmim]PF6 and TBP, pH, temperature and salt were investigated. The enrichment mechanism was explored. The results showed that a high enrichment factor of 128 was achieved in 30 mL TBP-30 mL [Bmim]PF6 system at a low temperature of 273.15 K without addition of salt and buffer solution. The high enrichment performance was attributed to the interaction between P==O of TBP and ?H of phenol OH.