Development of an online measurement system using an alpha liquid scintillation counter and a glass-based microfluidic solvent extraction device for plutonium analysis

Masahiko Yamamoto; Shigeo Taguchi; Van-Khoai Do; Takehiko Kuno; Naoki Surugaya

doi:10.1016/j.apradiso.2019.06.027

Development of an online measurement system using an alpha liquid scintillation counter and a glass-based microfluidic solvent extraction device for plutonium analysis

Appl Radiat Isot. 2019 Oct:152:37-44. doi: 10.1016/j.apradiso.2019.06.027. Epub 2019 Jun 20.

Authors

Masahiko Yamamoto¹, Shigeo Taguchi², Van-Khoai Do², Takehiko Kuno², Naoki Surugaya²

Affiliations

¹ TRP Decommissioning Center, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Ibaraki, 319-1194, Japan. Electronic address: yamamoto.masahiko@jaea.go.jp.
² TRP Decommissioning Center, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Ibaraki, 319-1194, Japan.

PMID: 31280105
DOI: 10.1016/j.apradiso.2019.06.027

Abstract

An online measurement system using an alpha liquid scintillation counter (α-LSC) coupled to microchip solvent extraction has been developed. A flow-through cell of α-LSC has been prepared by packing PTFE tube into glass tube to combine microchip. Two-phase flow in microchannel has been stabilized by using coiled tube. The Pu in organic phase has been mixed with scintillation cocktail by T-junction connectors. The system separates and detects Pu by online with detection limit of 6.5 Bq/mL, generating only μL-level wastes.

Keywords: Liquid radioactive waste; Liquid-liquid extraction; Microchip; Plutonium.