期刊
ANALYTICA CHIMICA ACTA
卷 1180, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.aca.2021.338854
关键词
Pseudo isotope dilution; Spectral interference; Barium; Europium; ICP-MS
资金
- Japan Society for the Promotion of Science (JSPS) [19K12300]
- Grants-in-Aid for Scientific Research [19K12300] Funding Source: KAKEN
A practical method called pseudo isotope dilution (PID) was proposed to correct barium-related spectral interferences on the measurement of europium. Results confirmed its validity by determining europium in standard solutions with different concentrations of barium.
Pseudo isotope dilution (PID) was suggested as a simple and practical approach for the correction of barium-related spectral interferences on the measurement of europium by inductively coupled plasma mass spectrometry (ICP-MS). The interferents, i.e. oxides and hydroxides of barium, were regarded as pseudo europium isotopes. An equation for calculating the concentration of europium was deduced and the net contribution of europium isotopes can be obtained by measuring the signal intensity ratios of I-151/I-153 in a sample, a europium standard, and a barium standard, respectively. The validity of the approach was confirmed by the determination of europium in standard solutions with different concentrations of barium. Determination of europium in river water and seawater certified reference materials was carried out, whose results were in coincidence with reference values. (C) 2021 Published by Elsevier B.V.
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