AIRBORNE PLUTONIUM 295 



TABLE 3 Extent of Translocation of ^ ^ ^Pu from Contaminated Foliage of 

 Bush Bean to Seed Tissues in the Absence and Presence of a Solution Vector*! 



*D. A. Cataldo, unpublished data. 



t All compounds were supplied from solutions at pH 5.8 to 7.0; aerosol characteristics for the fresh 

 and hydrated oxides are given in Table 1 ; aerosols of plutonium citrate had an AM AD of 1.61 Mm and 

 a GSD of 1.86, and the count mode was 0.200 jum; plutonium nitrate had an AM AD of 2.29 /nm and a 

 GSD of 1.91, and the count mode was 0.152 ^m. Plants were leached with 200 ml of solution 

 (equivalent to a 7-min rainfall of 0.4 cm). 



^Transport ratio = picocuries per gram of seed tissue/picocuries per gram of contaminated leaf 

 tissue; average of four replicate samples. 



§Aged in H^O at pH 7.0 for 10 months. 



TABLE 4 Extent of Translocation of ^ ^ ^ Pu from Contaminated Foliage of 

 Bush Bean to Root Tissues in the Absence and Presence of a Solution Vector*t 



*D. A. Cataldo, unpublished data. 



t All compounds were supplied from solutions at pH 5.8 to 7.0; aerosol characteristics are given in 

 Table 3. Plants were leached with 200 ml of solution (equivalent to a 7-min rainfall of 0.4 cm). 



:}: Transport ratio = picocuries per gram of root tissue/picocuries per gram of contaminated leaf 

 tissue; average of four replicate samples. 



§ Aged in HjO at pH 7.0 for 10 months. 



