Determination of ¹³⁷Cs in large volume seawater using Cu-hexacyanoferrate cartridge filters

Abstract

Abstract.A simple method to determine 137 Cs in seawater has been developed based on the use of a Cu-hexacyanoferrate scavenger. The Cu-hexacyanoferrate supported on cotton wound cartridge filter was used to absorb 137 Cs from seawater by passing large volumes over the cartridge filters with flowrate of 240 L hr -1 . Results from the Cu-hexacyanoferrate method were proved acceptable for accuracy with bias below  20 % i.e. -9.16 to + 18.55 % when compared with the traditional ammonium molybdophosphate pre-concentration method. This developed method is cost-effective and less time consuming. In addition it can be easily performed at sampling fields.