Analysis of Fission Products Using Capillary Electrophoresis with On-Line Radioactivity Detection
详细信息 查看全文
- 作者：Gregory L. Klunder ; John E. Andrews ; Jr. ; Patrick M. Grant ; Brian D. Andresen ; and Richard E. Russo
- 刊名：Analytical Chemistry
- 出版年：1997
- 出版时间：August 1, 1997
- 年：1997
- 卷：69
- 期：15
- 页码：2988 - 2993
- 全文大小：165K
- 年卷期：v.69,no.15(August 1, 1997)
- ISSN：1520-6882
文摘
Capillary electrophoresis has been used to separate metalions characteristically associated with nuclear fission.Indirect UV absorbance and on-line radioactivitydetectionwere used simultaneously to monitor the analytes. Theradioactivity detector consists of conical plasticscintillating material with the capillary passing through the centerto provide a 4
detection geometry. The wide end ofthecone is optically coupled to a photomultiplier tube.Transient isotachophoretic techniques were employedtostack large volumes of samples which had low specificactivities. Radioactivity detection of 152Eu and137Cs wasachieved at the nanocurie level for 80-100 nLinjections.The detector is approximately 80% efficient,enablingsamples resident in the detector window for 0.1 min tobe reliably assayed. The separation of 137Cs and137mBaisotopes, which are in secular equilibrium, was modeledto demonstrate the effects of the rapid decay of137mBa.
detection geometry. The wide end ofthecone is optically coupled to a photomultiplier tube.Transient isotachophoretic techniques were employedtostack large volumes of samples which had low specificactivities. Radioactivity detection of 152Eu and137Cs wasachieved at the nanocurie level for 80-100 nLinjections.The detector is approximately 80% efficient,enablingsamples resident in the detector window for 0.1 min tobe reliably assayed. The separation of 137Cs and137mBaisotopes, which are in secular equilibrium, was modeledto demonstrate the effects of the rapid decay of137mBa.