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.

Fullsize Image

中文翻译：

---

开发使用自动固相萃取电感耦合等离子体质谱法定量 90Sr 的在线稀释系统。

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 ₂动态反应（级联ICP-MS）快速定量放射性锶90 ( ^{90 Sr)。}所提出的系统自动提供更高的稀释比，最多是先前方法获得的稀释比的3.3±0.2倍，而不增加分析时间（<15分钟）。检测限达到 2.7 Bq/kg 湿（0.54 pg/kg 湿）。回收率测试结果与两个不同加标值一致。

全尺寸图像