equipment, calibration procedures, bias indicated that there was no and GAMANAL are given in the Enewetak significant. difference in the results Radiological Survey report. from the two facilities and that on Most of the Bikini samples were the average, for a series of samples, packaged in 3.3- or 3.9-cm-high both would obtain the same result. aluminum cans with nominal volumes Statistical variation does, of course, of 95 and 210 cm, respectively. exist in the measurement of any indi- Isotopic activities are reported vidual sample, as disintegrations per minute per the average value of many samples gram (dpm/g). is the important factor. Eleven nuclides have been observed in Bikini samples: 60 Co, 13 102 0 Teh, 106, 4, 1b toe, 15 a 20755 235y, and "os, 241 Am. 13354, . . When these radionuclides were but for dose assessment In addition to the interfacility comparison, a series of samples ori- ginally measured in the Biomedical facility was resubmitted to the not detected, upper limits were facility at a later date for compari- calculated by defining the upper limit son of the analytical results. The photopeak area to be twice the square data are presented in Table 3. Again root of the number of counts observed there is no indication of any statis- in the continuum normally occupied tical bias in the data. by the photopeak. These comparisons reconfirm the Thirty-one samples were submitted reproductibility of results within for comparative measurement to both a facility and between facilities the Biomedical and Radiochemistry observed during the course of the facilities. The results are presented analytical work for the 1972 Enewetak in Table 2. Testing the ratio for survey. Wet-Chemistry Analyses amount of elemental carrier or GENERAL tracer, Wet-chemistry analyses were chemical separation and puri- fication of the desired element, required to quantify a number of gravimetric or tracer yielding, and nuclides quantification by an appropriate that could not be determined by gamma spectrometry. Briefly, this technique. Table 4 presents a list of procedure involves the dissolution of the measured nuclides, their half- a sample in the presence of a known lives, principal radiation, and