A mechanistic study on ion pair extraction using single microdroplet injection and microelectrochemical techniques
A mechanistic study on ion pair extraction using single microdroplet injection and microelectrochemical techniques
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单微滴注射和微电化学技术离子对萃取的机理研究
DOI：
10.1039/b208431g
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发表时间：
2003
影响因子：
3.3
通讯作者：
K. Nakatani
中科院分区：
文献类型：
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作者：
T. Negishi;K. Nakatani
在二茂铁甲基三甲基溴化铵-六氟磷酸钠体系中，通过注入和操纵10−8cm3的单个油滴，以及单个液滴与微电极接触的电化学，研究了离子对从水中萃取到油中的动力学。在分配平衡时FcTMA+被提取到油相中的浓度取决于水相中FcTMABr、NaPF6和氯化钠的浓度。离子对萃取的初始速率与水中FcTMABr的浓度成正比，而与水中NaPF6和氯化钠的浓度无关。这些结果表明，离子对的提取速度是由FcTMA+从水到液滴的离子转移控制的，通过Pf6−转移保持液滴中的电子中性性。
Ion pair extraction from water into oil in a (ferrocenylmethyl)trimethylammonium bromide (FcTMABr)–sodium hexafluorophosphate (NaPF6) system was studied kinetically by injection and manipulation of a single oil droplet of 10−8 cm3 and electrochemistry of the single droplet contacting a microelectrode. The FcTMA+ concentration extracted into the oil phase at the distribution equilibrium was dependent on the FcTMABr, NaPF6, and NaCl concentrations in the water phase. The initial rate of the ion pair extraction was directly proportional to the FcTMABr concentration in water, while it was independent of the NaPF6 and NaCl concentrations in water. These results indicate that the ion pair extraction rate is governed by the ion transfer of FcTMA+ from water into the droplet, maintaining the electroneutrality in the droplet by the PF6− transfer.
单皮升液滴液液萃取及原位电化学微量分析研究
DOI：
--
发表时间：
2000
期刊：
Analytical Chemistry 77・2
影响因子：
--
作者：
J.Shikata;K.Kawase;T.Taniuchi;H.Ito;中谷 清治
通讯作者：
中谷 清治