A rapid method for the determination of 137Cs in environmental water samples

Abstract This work deals with a simple, rapid, and efficacious design for the measurement of 137 Cs in seawater. An adsorption filter is fabricated by coating copper(II) hexacyanoferrate(II) (CuCf) onto a densely twilled nylon cloth. The CuCF-nylon cloth filter is cut into round pieces and screwed into a polyethylene (PE) column. The 137 Cs-containing seawater sample is allowed to pass through the CuCF-nylon cloth filter into the column and 137 Cs in seawater can thus be efficiently adsorbed. The analysis for less than μCi level of 137 Cs in 4 1 seawater is illustrated to have a recovery better than 97%. The detection limit for 137 Cs in seawater can be greatly improved by the enrichment of 137 Cs on the adsorption filter.