Article Detail

Home > Article Detail
  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

A rapid separation of Cs, Sr and Ba using gas pressurized extraction chromatography with inductively coupled plasma-mass spectrometry

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2024, v.37 no.2, pp.123-129
https://doi.org/10.5806/AST.2024.37.2.123
Sojin Jeong (University of Science and Technology & Korea Atomic Energy Research Institute)
Jihye Kim (Korea Atomic Energy Research Institute)
Hanul Cho (Korea Atomic Energy Research Institute)
Hwakyeung Jeong (Korea Atomic Energy Research Institute)
Byungman Kang (Korea Atomic Energy Research Institute)
Sang Ho Lim (University of Science and Technology & Korea Atomic Energy Research Institute)
  • Downloaded
  • Viewed

Abstract

We present a rapid method for the determination of Cs, Sr, and Ba, heat generators found in highly active liquid wastes, by gas-pressurized extraction chromatography (GPEC) using a column containing a cationexchange resin. GPEC is a microscale column chromatographic technique that uses a constant flow rate of solvent (0.07 mL/min) with pressurized nitrogen gas supplied through a valve. In particular, because this method uses a small sample volume (a few hundred microliters), it produces less chemical waste and allows for faster separation compared to traditional column chromatography. In this study, we evaluated the separation of Cs, Sr, and Ba using GPEC. The eluate from the column (GPEC or conventional column chromatography) was quantitatively analyzed using inductively coupled plasma-mass spectrometry to measure the column recovery and precision. The column reproducibility of the proposed GPEC system (RSDs of recoveries) ranged from 2.7 to 4.1 %, and the column recoveries for the three elements ranged from 72 to 98% when aqueous HCl was used as the eluent. The GPEC results are slightly different in efficiency and separation resolution compared to those of conventional column chromatography because of the differences in the eluent flow rate as well as the internal diameter and length of the column. However, the two methods had similar recoveries for Cs and Sr, and the precision of GPEC was improved by two-fold. Remarkably, the solvent volume required for GPEC analysis was five times lower than that of the conventional method, and the total analysis time was 11 times shorter.

keywords
gas-pressurized extraction chromatography, column chromatography, inductively coupled plasmamass spectrometry, separation, reducing waste, cesium, strontium, barium


상단으로 이동

Analytical Science and Technology