Muramatsu Y, Hamilton T, Uchida S, Tagami K, Yoshida S, Robison W
Environmental and Toxicological Researches Group, National Institute of Radiological Sciences, Chiba, Japan.
Sci Total Environ. 2001 Oct 20;278(1-3):151-9. doi: 10.1016/s0048-9697(01)00644-1.
Nuclear weapons tests conducted by the United States in the Marshall Islands produced significant quantities of regional or tropospheric fallout contamination. Here we report on some preliminary inductively coupled plasma-mass spectrometry (ICP-MS) measurements of plutonium isolated from seven composite soil samples collected from Bikini, Enewetak and Rongelap Atolls in the northern Marshall Islands. These data show that 240Pu/239Pu isotopic signatures in surface soils from the Marshall Island vary significantly and could potentially be used to help quantify the range and extent of fallout deposition (and associated impacts) from specific weapons tests. 137Cs and 60Co were also determined on the same set of soil samples for comparative purposes.
美国在马绍尔群岛进行的核武器试验产生了大量的区域性或对流层沉降物污染。在此，我们报告了一些初步的电感耦合等离子体质谱（ICP-MS）测量结果，这些测量针对从马绍尔群岛北部的比基尼、埃尼威托克和朗格拉普环礁采集的七个复合土壤样本中分离出的钚。这些数据表明，马绍尔群岛表层土壤中的240Pu/239Pu同位素特征差异显著，有可能用于帮助量化特定武器试验的沉降物沉积范围和程度（以及相关影响）。为作比较，还对同一组土壤样本测定了137Cs和60Co。
