부산대학교 도서관

With a target to increase local seafood production to fulfil Singapore's goal of producing 30% of its nutritional needs by 2030, the local population is expected to consume more seafood produced domestically as part of their daily diet. It is therefore valuable to acquire radioactivity levels to evaluate the radiation exposure to the public from consumption of these domestic seafood produce. In this study, we evaluated domestically farmed fish and shellfish for natural and anthropogenic radionuclides using gamma spectrometry and inductively coupled plasma mass spectrometry. Mean activity concentrations of 228Ra, 226Ra, 40K, 137Cs, 238U and 232Th in farmed fish were determined to be 0.166 Bq/kg, 0.277 Bq/kg, 119.9 Bq/kg, 0.069 Bq/kg, 0.0190 Bq/kg and 0.0026 Bq/kg respectively, while activity levels observed in shellfish were 0.272 Bq/kg for 228Ra, 0.195 Bq/kg for 226Ra, 39.2 Bq/kg for 40K, < MDA for 137Cs, 0.2390 Bq/kg for 238U and 0.2013 Bq/kg for 232Th. The derived annual total effective dose arising from the intake of radionuclides has also been found to be significantly lower than the maximum dose of 1 mSv/yr allowable to the public. [ABSTRACT FROM AUTHOR]