분석과학 (Analytical Science and Technology)
- 제8권4호
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- Pages.427-434
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- 1995
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- 1225-0163(pISSN)
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- 2288-8985(eISSN)
Determination of Li by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
- Park, Chang J. (Korea Research Institute of Standards and Science) ;
- Chung, Bag S. (Research Center, Korea Electric Power Corporation)
- 발행 : 1995.12.25
초록
Inductively coupled plasma mass spectrometry combined with the isotope dilution method is used for the determination of lithium. The isotope dilution method is based on the addition of a known amount of enriched isotope (spike) to a sample. The analyte concentration is obtained by measuring the altered isotope ratio. The spike solution is calibrated through so called reverse isotope dilution with a primary standard. The spike calibration is an important step to minimize error in the determined concentration. It has been found essential to add spike to a sample and the primary standard so that the two isotope ratios should be as dose as possible. Since lithium is neither corrosive nor toxic, lithium is used as a chemical tracer in the nuclear power plants to measure feedwater flow rate. 99.9%