Development of Online Dilution System for Quantification of 90Sr Using Automatic Solid-phase Extraction Inductively Coupled Plasma Mass Spectrometry

• Published in: Analytical Sciences Vol. 36; no. 9; pp. 1131 - 1135
• Main Authors: YANAGISAWA, Kayo, MATSUEDA, Makoto, FURUKAWA, Makoto, TAKAGAI, Yoshitaka
• Format: Journal Article
• Language: English
• Published: Singapore The Japan Society for Analytical Chemistry 10-09-2020; Springer Nature Singapore; Japan Science and Technology Agency
• Subjects: Analytical Chemistry; Cascade ICP-MS; Chemistry; Dilution; Inductively coupled plasma mass spectrometry; Ions; On-line systems; online dilution system; radioactive strontium; Scientific imaging; Solid phases; Strontium; Strontium 90; Strontium radioisotopes; strontium 90; radioactive strontium; Cascade ICP-MS; online dilution system
• ISSN: 0910-6340; 1348-2246
• DOI: 10.2116/analsci.20N009

In this paper, we propose an online dilution system for the rapid quantification of radioactive strontium-90 (90Sr) with inductively coupled plasma mass spectrometry coupled solid-phase extraction and O2 dynamic reaction (cascade ICP-MS). The proposed system automatically provides a higher dilution ratio, which is at most 3.3 ± 0.2-times the ratio obtained by the previous method, without increasing the analysis time (<15 min). A detection limit of 2.7 Bq/kg wet (0.54 pg/kg wet) was achieved. The recovery test results were consistent with two different spiked values.