Development of a copper-substituted, Prussian blue-impregnated, nonwoven cartridge filter to rapidly measure radiocesium concentration in seawater

作者：Yasutaka Tetsuo^*; Miyazu Susumu; Kondo Yoshihiko; Tsuji Hideki; Arita Koichi; Hayashi Seiji; Takahashi Akira; Kawamoto Tohru; Aoyama Michio

来源：Journal of Nuclear Science and Technology, 2016, 53(9): 1243-1250.

DOI：10.1080/00223131.2015.1135302

• Dissolved radiocesium
• seawater
• Prussian blue copper analog
• rapid preconcentration
• cartridge filter
• nonwoven fabric
• monitoring

This paper presents a cartridge filter incorporating a nonwoven fabric impregnated with Prussian blue copper analog (Cu-CF) to effectively concentrate and quantify radiocesium dissolved in seawater. The recovery ratio of the Cu-CF was >95% in laboratory experiments at a flow rate of 0.5L min(-1) through the filter and >93% in field experiments. Test measurements of Cs-137 concentrations in seawater using Cu-CF agreed with the results obtained by using a conventional coprecipitation method that employed ammonium phosphomolybdate (within the counting error of the detector). The proposed method can shorten the preconcentration and pretreatment times for radiocesium, to just 40min in 20L of seawater, which is much faster than the approximate to 1 week required by traditional ammonium phosphomolybdate methods.

• 出版日期2016