Andrews, C. J., Dwyer, L. M., Stewart, D. W., Dugas, J. A., Bonn, P. (2000): Distribution of carbohydrate during grainfill in Leafy and normal maize hybrids.
Canadian Journal of Plant Science
, and some kind of meat). All food establishments that use vegetables should adopt good practice procedures to ensure proper hygiene of the leaves and, consequently, to offer safer food to consumers. The majority of vegetables (mainly leafy greens) are
]. In the crop of leafy vegetables, cabbage and kale are regarded as registered crop in most countries [ 5 , 6 ]. However, the residual behavior difference between cabbage/kale and other leafy vegetables have never been reported. Therefore, the
The paper deals with the transfer factors (TF) generated for a few varieties of leafy vegetables (spinach, fenugreek, and
amaranths) consumed by the locals around Tarapur atomic power station environment in India. The soil and leafy vegetable samples
collected from the ambient environment of nuclear site were used for the determination of the TFs and they were compared with
TFs generated from pot experiments under controlled conditions for 137Cs. The activity of 137Cs in soil and each vegetable was determined by gamma spectrometry using HPGe detector (35 and 160% relative efficiency) and
was reported on dry weight basis for both ambient environment and pot samples. The radioactive effluent containing 137Cs (pH ~7) from nuclear power station was used to spike the soil for pot (size 90 cm × 45 cm × 42 cm) experiment. The TFs
obtained for ambient environment and pot experiment were found to be in the range of 0.035–0.592 and 0.0054–0.29, respectively.
It is observed that TFs of ambient environment are in good agreement with those obtained in the pot experiment conducted under
controlled conditions. Further, the observed TF values at Tarapur nuclear site are comparable with the range of typical IAEA
transfer factor values for general leafy vegetation (0.11–2.9) for tropical environment.
A radiation dose assessment exercise was carried out for the Ipomea batata, Allium sativum, Dacaus carota, and Solanum tuberosum due to naturally available radionuclide 40K, 238U and 232Th in the Domiasiat area of Meghalaya. The concentration of radionuclides in biota as well as corresponding soil was measured
by precipitation method using NaI detector for continuous 12 months. Transfer factor was calculated and was, for 40K(3.96E−05, 3.40E−05, 3.40E−05, 2.70E−05), for 232Th(3.94E−05, 3.20E−05, 3.20E−054.93E−05), for 238U(3.60E−05, 3.89E−05, 3.85E−054.57E−05), respectively in each biota due to each radionuclide. The point source dose distribution
(source ↔ target) hypotheses was applied for the consideration of absorbed fraction. The generated data were modeled using
the FASSET method and obtained dose was 8.42E−03, 8.36E−03, 7.78E−03, 7.74E−03 μGy h−1, respectively and finally compared with the IAEA and UNSCEAR dataset for screening level dose for terrestrial biota.