Levels and Distributions of (210)Pb and (210)Po in Selected Seafood Samples in China and Assessment of Related Dose to Population

In this study, the activity concentrations levels of (210)Pb and (210)Po in the edible portions of eight seafood samples collected from the Fujian coast of China were determined. The activity concentrations ranged from 0.74 ± 0.08 to 12.6 ± 1.0 Bq/kg for (210)Po and from the minimum detectable limit (MDL, 0.80 Bq/kg) to 11. 7 ± 1.1 Bq/kg for (210)Pb. The (210)Po activity concentration in all the fish organs ranged from 0.68 to 204 Bq/kg (w.w.), and the (210)Po activity was mainly concentrated in the stomach, spleen, heart, liver, gonad, and intestine samples. The (210)Pb activity concentration in all the fish organs ranged from the MDL to 15.2 Bq/kg (w.w.), and the (210)Pb activity was concentrated in the head, fish scale, and gill samples. The annual effective ingestion doses ranged from 82.8 to 255 μSv/a for all age groups, and the lifetime risk of cancers were estimated. Both the effective ingestion doses and cancer risk to humans were within the acceptable ranges.