Development of homogeneous liquid-liquid extraction method and its application to high performance separation-detection system

均相液液萃取方法的研制及其在高性能分离检测系统中的应用

基本信息

批准号：
08650959
负责人：
IGARASHI Shukuro
金额：
$ 1.41万
依托单位：
IBARAKI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

This study has developed a new high-performance separation-detection system by combinating homogeneous liquid-liquid extraction method as preconcentration and some instrumental methods of analysis. The produced fruits during the term of two years are as follows.1.Research of new phase separation phenomenon : Nine kinds of metal ion were examined as a counter ion for fluorosurfactant (perfluorooctane sulfonic acid). Among them, the use of calcium ion led to liquid sedimented phase by ion-pair phase separation phenomenon. The extraction method developed is well suited for concentration of vital substance, because this sedimented phase contains much water.2.Fluorescent X-rays analysis (XRF) : The selective separation and concentration for high-valence metal ions {Ti (IV), V (V), Zr (VI), Nb (V), Ta (V)}, simultaneous determination of 10^<-8> M levels for these ions by XRF and analysis of Ti, Zr, V as impurity element in Al-Cu alloy were established.3.Total reflection X-ray fluorescence : … More Homogeneous liquid-liquid extraction method based on pH dependent phase separation phenomenon using perfluorooctanoic acid was applied as a preconcentration of TXRF.In this extraction method, the purpose element was concentrated to a few ul of volume without having influence of much molten agent. Moreover, small amounts of impurity element such as Fe, Ni and Cu in ceramics or graphite sample were simultaneously determined by TXRF.4.High-performance liquid chromatography : Homogeneouse liquid-liquid extraction method based on pH dependent phase separation of water/acetic acid/chloroform ternary components system was applied as preconcentration of HPLC.Spectrophotometric detection-HPLC of ppb levels of copper (II) and palladium (II) was developed with ultra-highly sensitive chelating reagent {i.e.tetrakis (4-pyridyl) porphine}.In conclusion, satisfactory results were, obtained in this study according to the original plan. In the near future, this useful method will be applied to wide range of practical sample. Less

本研究将均质液液萃取预浓缩方法与一些仪器分析方法相结合，开发了一种新型的高性能分离检测系统，历时两年取得的成果如下：1.新型相分离的研究。现象：检查了九种金属离子作为含氟表面活性剂（全氟辛烷磺酸）的抗衡离子，其中，使用钙离子导致液体沉淀相。所开发的萃取方法非常适合重要物质的浓缩，因为该沉淀相含有大量的水。2.荧光X射线分析（XRF）：高价金属离子的选择性分离和浓缩。 {Ti(IV)、V(V)、Zr(VI)、Nb(V)、Ta(V)}，通过XRF和Ti、Zr的分析同时测定这些离子的10^ -8 M水平， V为建立了 Al-Cu 合金中的杂质元素。3.全反射 X 射线荧光：… 更多基于 pH 依赖性相现象分离的均相液-液萃取方法，使用全氟辛酸作为 TXRF 的预浓缩。在该萃取方法中，目的元素浓缩至几ul体积，不受大量熔融剂的影响，同时测定陶瓷或石墨样品中的少量Fe、Ni、Cu等杂质元素。 TXRF.4.高效液相色谱法：采用基于水/乙酸/氯仿三元体系pH依赖性相分离的均相液液萃取方法作为HPLC的预浓缩。分光光度检测-HPLC测定ppb级铜（II））和钯（II）是用超高灵敏度螯合剂{即四（4-吡啶基）卟啉}显色的。结论是，本研究按照原计划取得了满意的结果，在不久的将来，这种有用的方法将被广泛应用到实际样本中。