Noshkin V E, Robison W L, Wong K M
Health and Ecological Assessment Div. L-453, Lawrence Livermore National Laboratory, Livermore, CA 94550-9900.
Sci Total Environ. 1994 Sep 30;155(1):87-104. doi: 10.1016/0048-9697(94)90364-6.
The concentrations of 210Po and 210Pb have been determined in many local foods consumed by societies residing on different atolls in the Marshall Islands. The average daily intake of these two naturally occurring radionuclides from local and imported food is estimated to be 2.18 and 0.36 Bq, respectively. Local foods contribute 87% of the 210Po and 47% of the 210Pb associated with the diet. The items contributing the majority of the activity to the diet are derived from the marine environment and include parts of fish, invertebrates, seabirds and eggs of seabirds. The committed effective dose from ingestion of 210Po and 210Pb is approximately 2 mSv/year (200 mrem/year). This pathway now contributes 83% of the natural background irradiation received by residents in the Marshall Islands. Because the naturally occurring radionuclides are omnipresent in terrestrial and marine foods at all atolls, the annual intake and computed dose can be considered as typical values for individuals with comparable diets and inhabiting other islands in the Pacific.
已对居住在马绍尔群岛不同环礁的社会群体所食用的多种当地食物中的钋 - 210和铅 - 210浓度进行了测定。据估计，从当地食物和进口食物中摄入这两种天然存在的放射性核素的平均日摄入量分别为2.18贝可勒尔和0.36贝可勒尔。当地食物分别占饮食中钋 - 210的87%和铅 - 210的47%。饮食中大部分放射性活度的来源是海洋环境中的食物，包括鱼类、无脊椎动物、海鸟及其蛋的部分。摄入钋 - 210和铅 - 210所致的待积有效剂量约为2毫希沃特/年（200毫雷姆/年）。这条途径目前占马绍尔群岛居民所接受的天然本底辐射的83%。由于天然存在的放射性核素在所有环礁的陆地和海洋食物中普遍存在，因此年摄入量和计算出的剂量可被视为饮食类似且居住在太平洋其他岛屿的个人的典型值。
