201718th International Congress of Metrology
|Number of page(s)||3|
|Section||Metrology for a cleaner environnement / Métrologie pour un environnement plus propre|
|Published online||18 September 2017|
Verification of 137Cs determination in seawater using Cu-hexacyanoferrates filters
Office of Atoms for Peace, Bureau of Technical Support for Safety and Regulation, 10900 Bangkok, Thailand
* Corresponding author: email@example.com
A rapid method to determine 137Cs in seawater using Cu-hexacyanoferrates ion exchanger has been developed and verified for purpose of Thailand routine and emergency environmental radiation monitoring. The Cu-hexacyanoferrate supported cotton-wound cartridge filters were used to absorb 137Cs from spiked synthesis seawater by passing various large volumes i.e. 200 L, 300 L and 400 L over the filters with slow flow rate at 240 L/hr. The filter samples were converted to ash through a heating step and directly measured with gamma ray analysis using HPGe detector. The result showed acceptable accuracy with bias below ± 25%, in the range from - 24.63% to + 3.29%. This developed method is cost-effective and easily to performed in sampling fields and can be optimised its accuracy with analysis time when it needed.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.