Yanagisawa Kayo, Matsueda Makoto, Furukawa Makoto, Takagai Yoshitaka
Faculty of Symbiotic Systems Science, Cluster of Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan.
Fukushima Environmental Safety Center, Sector of Fukushima Research and Development, Japan Atomic Energy Agency, 10-2 Fukasaku, Miharu, Tamura, Fukushima, 963-7700, Japan.
Anal Sci. 2020 Sep 10;36(9):1131-1135. doi: 10.2116/analsci.20N009. Epub 2020 Apr 17.
In this paper, we propose an online dilution system for the rapid quantification of radioactive strontium-90 (Sr) with inductively coupled plasma mass spectrometry coupled solid-phase extraction and O 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.
在本文中，我们提出了一种在线稀释系统，用于通过电感耦合等离子体质谱联用固相萃取和O动态反应（级联电感耦合等离子体质谱）快速定量放射性锶-90（Sr）。所提出的系统自动提供更高的稀释比，在不增加分析时间（<15分钟）的情况下，该稀释比最高为先前方法所得稀释比的3.3±0.2倍。实现了2.7 Bq/kg湿重（0.54 pg/kg湿重）的检测限。回收率测试结果与两个不同的加标值一致。
