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

Abstract

In this paper, we propose an online dilution system for rapid quantification of radioactive strontium-90 (90 Sr) with inductively coupled plasma mass spectrometry coupled solid-phase extraction and O 2 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.

A part per trillion isotope ratio analysis of 90Sr/88Sr using energy-filtered thermal ionization mass spectrometry

“…An alternative and less time-consuming method to analyze 90 Sr is mass spectrometry. Inductively coupled plasma mass spectrometry (ICP-MS) is a new mass spectrometric technique for 90 Sr detection 27 – 31 . Unlike radiometry, the target of mass spectrometric measurement is all the existing 90 Sr atoms in the sample.…”

Fast and high spatially resolved multielemental mapping of otoliths using IR&UV-femtosecond laser ablation-ICP-TOFMS

“…This method was based on two aerosols from an ablated sample and a nebulized isotopically enriched spike solution, which were online mixed using a dual-port spray chamber. 14 Otolith analyzes usually assume that the calcium carbonate matrix is deposited homogeneously, forming well-dened layers perpendicular to the axis of growth (approximately concentric). However, it has been documented that the heterogeneity in the elemental distribution within each growth ring is greater than assumed.…”

A Part Per Trillion Isotope Ratio Analysis of 90Sr/88Sr using Energy-Filtered Thermal ionization mass spectrometry

“…Inductively coupled plasma mass spectrometry (ICP-MS) is a new mass spectrometric technique for 90 Sr detection. [27][28][29][30][31] Unlike radiometry, the target of mass spectrometric measurement is all the existing 90 Sr atoms in the sample. The large difference in target numbers suggests that mass spectrometric methods are more sensitive for detecting 90 Sr.…”