engleski

On Column Cherenkov Detection of Sr-89, 90

In recent years fully automated approach for monitoring pure beta emitters have been developed [1–5]. In our laboratory semi-­‐ automated procedure for determination of Sr-­‐ 89, 90 in water samples was established [6]. Procedure includes separation of strontium on SuperLig 620, from matrix followed by off line on column detection via Cherenkov counting, on commercially available instrument, LSC Tri-­‐ Carb 3180 TR/SL. The goal is further development of mentioned method for monitoring environmental occurrence of Sr-­‐90. The major influence on detection limit have separation and preconcentration on the column as well as detection efficiency. Therefore, optimal conditions for Cherenkov on column detection will be established by varying type of column and vial material, thickness of column walls as well as media around the column. The influence of mentioned parameters on Cherenkov counting efficiency of Sr-­‐89, 90 will be discussed.

Cherenkov detection; strontium

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