A combined SFE-SFC system has enabled the simultaneous determination of the partition coefficient (K) values of three organic compounds distributed as mixtures between SF-CO₂ and water phases. The system used a single valve SFE-SFC recirculation interface. The compounds were: o-toluidine, o-cresol and indole prepared as mixtures in aqueous solutions at concentration levels applicable to industrial process waters and of relevance to potential groundwater contamination that may arise from geological carbon capture and storage facilities. Sets of three compound K values were simultaneously obtained at temperatures 313 K, 323 K, 333 K, and five pressures from 8.62 MPa to 22.41 MPa. At each temperature, the SFE vessel pressure was incremented in controlled SF-CO₂ pressure steps applied to a single stirred water sample to rapidly obtain complete series of individual K values. The instrumentation and method demonstrate considerable potential to achieve significant time savings to construct an expanded organic compound K database.

结合使用SFE-SFC系统可以同时确定三种有机化合物的分配系数（K）值，这些有机化合物作为SF-CO ₂和水相之间的混合物分布。该系统使用单阀SFE-SFC再循环接口。这些化合物为：邻甲苯胺，邻甲酚和吲哚在水溶液中以混合物的形式制备，其浓度水平适用于工业过程用水，并与地质碳捕获和储存设施可能引起的潜在地下水污染有关。三件套K套在温度313 K，323 K，333 K和5.62 MPa至22.41 MPa的五个压力下同时获得这些值。在每个温度下，将SFE容器压力按施加到单个搅拌水样品上的受控SF-CO ₂压力步骤增加，以快速获得完整的单个K值序列。该仪器和方法显示出巨大的潜力，可以节省大量时间来构建扩展的有机化合物K数据库。