734 Noshkin et al. Table 3. Transuranium concentrations and plutonium activity ratios. Estimated year of 2394240, 238, « ahiat 1971-1972 0.1347 0.005418 0.09451 1970 1969 1968 1967 O.10t5 0,10+h 0.1042 0,1045 0.005411 0,00h222 0.003419 0.004411 1965 0.1124 1966 “ oo Me yo — . a a ‘ a a o ; 0.09437 O.L8th1 0.14439 0.0945 0.006424 0.14430 1964 O.4e+th 0.02346 0.62113 1962 0.2042 0.011418 0.2727 1963 ; a, pCi/g dry weight - decay corrected to year of srowth + % error growth section 0.003t21 O.1k+3 1961 0.007414 0.6043 0.022t9 0.14452 0.18429 O.50th1 1960 1959 1.2543 0.8243 0.05848 0.04945 0.50453 0.68433 1958 4.5043 0.26642 3.29217 1.2043 0.14043 1.35428 1957 1956 13.1943 1954-1955 0.90049 38.9743 2.18 +2 9.0027 17.55413 ‘ 240, 239,# Ou, 239put 0.799t9.9 21.9045.5 0.754 0.ThO 0.769 0.775 28.7 31.3 26.6 32.8 (0.225)8 fo.0228)8 0.770 39.6 0.779 42.7 0.753t0.9 (0.204) 0.851 0.75422.3 (0.204) 0.821 30,146.21 (0.0184) 36.2 —_ ' 6.5 0.822 0.68740.8 46.9 37.543.8 0.87940.5 (0.238) 0.567 36.642,.2 (0.023) 35.2 (0.186) (0.0229) 0,.83840.2 36.1+0.8 (0.227) (0.0222) o.80640.1 (0.218) 39.140.6 (0.0239) *Determined by alpha spectrometry. +Determined by gamma spectrometry. Determined by mass spectrometry. 8Atom ration shown within parentheses. 240py : 239 py activity ratio divided by 3.69; 2hlpy:23%Py activity ratio divided by 1638. Table 4. Estimated year of , ‘ po Ce : oe , _ 7 ye . ue 1555, 2075, 1971-1972 9.11425 0.06428 * 1969 1968 1967 1966 1965 0.14428 0.18+27 0.18424 0.18426 0,23422 0.09414 0.09414 0.10415 0.09415 0.09417 0.15t2h 0.13275 0.11428 0.2241) 0.15480 1963 0.45480 O.14437 1964 . 0.90467 1961 1.80453 1960 4 lo5th1 5.63447 31.5217 1957 1956 rr re ¢ 1962 1958 . rr ~« 1,22+9 1959 we 5.85460 117.045 1954-1955 : pci/g dry weight + % error growth section L970 , . Other gamma-emitting radionuclides detected, decay corrected to year of coral growth. 288,. 046 0.2346 0.42428 0.50429 0.86229 604, 125. 0. 54+h3 . 1.08434 ’ 0.68239 1.33+22 3.50438 1.49433 13.424 7.20432 30.6410 37.621 102m, 0.37412 0.90447 5.13410 137¢. 9.90430 88.242 O.4otho o.41thg 1.04418 2.16411 192420 126+h7 . *A Dliank space indicates the data werenot collated or the concentration was below detection limits. ay, ARCHES ‘° D - ‘oR :