Table 1. . Analytical program for Bikini samples. Sample type Total collected Gamma counting Wet chemistry Bikini soil 648 369 333 Eneu soil 167 118 118 Bikini vegetation 96 96 96 Eneu vegetation 31 31 31 Bikini animal 10 LO 10 . the samples analyzed by gamma gamma spectrometry. spectrometry. from each large soil sample were sub- All radionuclide Separate aliquots . concentrations, whether determined mitted for wet chemistry and for gamma by gamma spectrometry or wet chemis- spectroscopy. try, were reported to a reference quired for certain nuclides that could time of 1 Jan 1975 not be measured by gamma counting; (001.000 Z, 75). All initial processing was the majority of these nuclides were conducted at LLL and consisted either alpha or beta emitters. primarily of drying, homogenizing, and packaging the samples. Wet chemistry was re- Discussions of the individual Soil quality control programs are included and vegetation samples were dried in the sections dealing with gamma by heating in ordinary ovens. spectrometry and wet chemistry. Ten samples of pig and chicken tissue Reproducibility of measurements was collected on Bikini were lyophilized. examined by statistically comparing Wet-chemistry analyses performed ratios of the individual measurements by MCL involved the dissolution of of a given isotope. a sample aliquot, and standard deviation of chemical separation The mean value the ratios of the desired elements, and radiation were then calculated. measurement of the elemental samples. of a mean value differing from unity, In no case was an entire sample i.e., consumed in a single dissolution. was tested by calculating the standard All vegetation and animal tissue error, samples submitted for wet chemistry mean} multiplying Sy by a factor t, had been analyzed previously by which is based upon the 95 percent ~2- The significance indication of possible bias, Ss» of the mean }! (logarithmic