摘要
有二硅酮表面活化剂， Dow Corning DC-190 和 DC-193 的浊点抽取(用户终端设备) 过程，作为 preconcentration 被学习，为水的处理由三踪迹多环芳香烃弄脏(哼) ：蒽，菲和分核。为所有情况，二硅酮表面活化剂获得的充满表面活化剂的阶段的体积是很小的，即在充满表面活化剂的阶段的更低的含水率被获得。例如，不到 3% 起始的答案被获得在一 1%( 由质量) 表面活化剂答案，它是比在一样的表面活化剂集中的 TX-114 的小得多的。并且 TX-114 非在大多数之中作为一个高紧缩的充满表面活化剂的阶段被知道离子型表面活性剂，因此，比较证明优秀丰富被用户终端设备进程与硅酮表面活化剂在分析应用程序保证，并且在充满表面活化剂的阶段获得的更低的含水率在大规模水处理也是重要的。恢复上的添加剂和析相作用方法论的影响哼被讨论。与 DC-193 作比较。DC-190 有一个下浊点和所有的更高的恢复(近的 100%) 三在一样的表面活化剂集中哼，它在 HPLC 以前作为 preconcentration 进程为申请被要求系统。然而， DC-190 答案是难的是而 DC-193 有一个相对更高的阶段由加热，而是一个高浊点分开速度，仅仅由加热分开的阶段(在 360K 附近) 限制它的申请。由于由加热的析相作用是对大规模水处理合适的用户终端设备的唯一的方法，二个硅酮表面活化剂答案的混合物在这研究被调查。包含 1% 混合 DC-190 和 DC-193 的一个答案(在 90:10 的比率) 有分开的一个相对低浊点和快阶段的 100% 附近的移开的蒽，菲和分核加速。
Cloud point extraction （CPE） processes with two silicone surfactants, Dow Coming DC-190 and DC-193, were studied as preconcentration and treatment for the water polluted by three trace polycyclic aromatic hydrocarbons （PAHs）： anthracene, phenanthrene and pyrene. For all cases, the volumes of surfactant-rich phase obtained by two silicone surfactants were very small, i.e. a lower water content in the surfactant-rich phase was obtained. For example, less than 3% of the initial solution was obtained in a 1% （by mass） surfactant solution, which was much smaller than that of TX-114 in the same surfactant concentration. And TX-114 is known as a high compact surfactant-rich phase among most nonionic surfactants, thus the comparison showed that an excellent enrichment was ensured in the analysis application by the CPE process with the silicone surfactants, and the lower water content obtained in the surfactant-rich phase is also important in the large scale water treatment. The influences of additives and phase separation methodology on the recovery of PAHs were discussed. Comparing with DC-193, DC-190 has a lower cloud point and a higher recovery （near 100%） of all the three PAHs in same surfactant concentration, which was required for application as a preconcentration process prior to HPLC system. However the DC-190 solution is hard to be phase separated only by heating, whereas DC-193 has a relative higher phase separating speed by heating, but a high cloud point （around 360K） limits its application. Due to the phase separation by heating is the only method of CPE suitable to the large scale water treatment, the mixtures of two silicone surfacrants solutions were investigated in this study. A solution containing 1% of mixed DC-190 and DC-193 （in the ratio of 90 ： 10） removed anthracene, phenanthrene and pyrene near 100% with a relative low cloud point and quick phase separating speed.
