Uptake of iodine-131 in tropical crops. [Ipomoea batatas; Ipomoea reptans; Lycopersicon]
Vegetable crops which include sweet potato tops (Ipomoea batatas), kangkong (Ipomoea repitans) and tomato plants were grown in dark-painted jars containing Hoagland-Arnon modified nutrient solution, utilizing the technique of hydroponics. The experiments for sweet potato tops and kangkong plants were duplicated for replicate studies and steady-state conditions were simulated throughout. Tomato plants were grown in the same manner but growth was observed to be hampered when starting from mature plants. Radioiodine was added to the nutrient medium containing 0.5% non-radioactive NaI solution. The solution in the jar was adjusted daily so as to maintain a constant concentration which would simulate routine releases that are essentially continuous. After incorporating the radioiodine to the solution, 10 ml aliquot was taken and counted for radioactivity by means of a 5'' x 5'' NaI(T1) detector connected to the multichannel gamma analyzer. Both plants and solution were counted for radioactivity at different time intervals using the same geometry. Results indicate that the activity in the plants were relatively higher than that of the solution. The activity tends to level off or decrease after a few days. The concentration factor which is the ratio of the activity in the plant (uCi/gm) over the activity in the medium (uCi/ml) varied for each time interval. 12 references, 2 figures, 3 tables.
- Research Organization:
- Philippine Atomic Energy Commission, Quezon City
- OSTI ID:
- 6062632
- Report Number(s):
- CONF-860626-
- Journal Information:
- Trace Subst. Environ. Health; (United States), Journal Name: Trace Subst. Environ. Health; (United States); ISSN PUMTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Kinetics
& Toxicology-- Animals
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Microorganisms
& Cells
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
EXPERIMENTAL DATA
HERBS
INFORMATION
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PLANTS
RADIOACTIVITY
RADIOISOTOPES
RADIONUCLIDE KINETICS
UPTAKE