Abstract
The high-resolution emission spectra measured using a microscope Raman spectrometer and direct-inlet electron ionization mass spectrometry (DI-EIMS) were studied for the rapid analysis of a trace amount of various europium β-diketonates in order to utilize them as fluorescent markers. Five kinds of europium β-diketonates were distinguished from the emission spectra obtained using the Raman spectrometer. For DI-EIMS, the electron ionization mass spectra of the europium β-diketonates showed the characteristic fragment ion peaks due to the isotope effect of 151Eu and 153Eu. The DI-EIMS was very useful for identifying the compounds compared with spectrofluorometry. The scan and selected ion-monitoring modes of DI-EIMS showed the detection limits of the samples at levels of hundreds and tens of nanograms (ng), respectively.
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Kurata, S., Nagai, M. Identification of Luminescent Europium β-Diketonates Using High-Resolution Emission Spectrometry and Direct-Inlet Electron Ionization Mass Spectrometry. ANAL. SCI. 17, 1079–1084 (2001). https://doi.org/10.2116/analsci.17.1079
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DOI: https://doi.org/10.2116/analsci.17.1079