Food-Chain Relationships of Radiostrontium in the Sedan Fallout Field

Abstract

ACKNOWLEDGMENTSWe wish to express our gratitude for the advice and assistance given

Effects of nuclear and conventional chemical explosions on vegetation

“…Mills and Shields (1961) found the absorption coefficients (uc/100 g plant part x 100) uc/100 g soil for Bromus rubens to be 29.13 for 90 Sr, 6.54 for 106Ru-Rh, 1.75 for lanthanide rare earths and only 0.61 for 9^ZrRb. Martin and Turner (1965) found that 89 Sr on D+5 (5 days after the Sedan detonation) was 100 times higher than 9^Sr in non-washed plants samples. 89 Sr on dried twigs and foliage of shrubs ranged from 6,487 pci at sites where readings of 75 mr/hr were recorded to 228 pci where 1.5 mr/hr were recorded.…”

“…58), 100 mr/hr at 51 km, and 1 mr/hr at 160 km. Martin and Turner (1965) made a broad study of radiostrontium in the food chain of the fallout area by collecting plants and rabbits before and for 60 days after the detonation at stations that registered 75 to 1.5 mr/hr 5 on days after the event and covered a distance of 160 km. They found that o:7 Sr on D+5 (5 days after the detonation) was 100 times higher than 9^Sr in plants and that Sr was not significantly higher than in pre-explosion samples at 12 of these 20 stations.…”

INTERCEPTION AND RETENTION OF RADIOACTIVE FALLOUT BY DESERT SHRUBS IN THE SEDAN FALLOUT FIELD. Project 62.83 (of) Project SEDAN

“…The methods used in collecting, processing, and analyzing these samples have been described in previous reports (5,8) Analyses were also made to determine the time of collection concentra- ation. The dose rate contours (mr/hr, 3 ft. above ground, 24 hr.…”

“…For example, the data for logloPo (I ) S < 10 (Table 5) indicates The results given in Table 1 showed that the maximum concentrations 131 89 of I and Sr in plant samples and rabbit tissues decreased with increasing distance from ground zero and decreasing gamma dose rates at H + 24. In this respect, the four study areas --Groom, Penoyer, Railroad, The formulation of deterministic and stochastic models to represent these relationships and the potential uses of such models in predicting radionuclide levels and tissue doses resulting from a single fallout event were (4)(5)(6)(7)(8)(9) discussed in earlier papers 4.2 Fallout Particles and Radioactivity on Plant Foliage.…”