Concentrations of ~(210)Po in fish and shellfish from southern region of Japan and evaluation of ~(210)Po intake from seafood for Japanese people

摘要

Concentrations of ~(210)Po in fish and shellfish, mostly collected from southern region of Japan were analyzed. Values ranged from 0.2 to 229 Bq/kg fresh weight and higher concentrations were observed in samples analyzed with viscera. Intake of ~(210)Po through fish and shellfish was evaluated at different Japanese cities based on statistical consumption data. Phytoplankton, Heterosigma akashiwo was collected during a harmful algal bloom and ~(210)Po was analyzed. The phytoplankton occupied only 4.4% of ~(210)Po in seawater and a large fraction of ~(210)Po was observed in the particulate form.