Transfer factors of radioiodine from volcanic-ash soil (Andosol) to crops.
Transfer factors of radioiodine from volcanic-ash soil (Andosol) to crops.
复制标题
放射性碘从火山灰土壤 (Andosol) 到农作物的转移因子。
DOI：
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发表时间：
2003
影响因子：
2
通讯作者：
Y. Muramatsu
中科院分区：
文献类型：
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作者：
T. Ban;Y. Muramatsu
为了获得放射性碘从火山灰土到农作物的土壤-植物转移因子，我们进行了放射性示踪实验。从安多索尔到农作物可食用部分的放射性碘的TF值(以湿重计)如下：水芹，0.00098，洋葱，0.0011，萝卜，0.0044，萝卜，0.0013，茄子，0.00010。小麦可食用部分的放射性碘的TF值(以干重为基础)的平均值为0.00015。我们还研究了碘在农作物中的分布。叶片的TF值有高于块茎、果实和籽粒的趋势。对水芹有很高的Tf，因为这种植物是在淹水的条件下种植的，在这种条件下，碘从土壤中解吸到土壤溶液中，Eh值下降。本研究获得的数据应有助于评估与燃料循环有关的长寿命129I(半衰期：1.57×10(7)年)途径。
In order to obtain soil-to-plant transfer factors (TFs) of radioiodine from volcanic-ash soil to agricultural crops, we carried out radiotracer experiments. The mean values of TFs (on a wet weight basis) of radioiodine from Andosol to edible parts of crops were as follows: water dropwort, 0.24; lettuce, 0.00098; onion, 0.0011; radish, 0.0044; turnip, 0.0013 and eggplant, 0.00010. The mean value of the TFs of radioiodine for edible parts of wheat (on a dry weight basis) was 0.00015. We also studied the distributions of iodine in crops. There was a tendency for the TFs of leaves to be higher than those of tubers, fruits and grains. A very high TF was found for water dropwort, because this plant was cultivated under a waterlogged condition, in which iodine desorbed from soil into soil solution with a drop in the Eh value. The data obtained in this study should be helpful to assess the long-lived 129I (half life: 1.57 x 10(7) yr) pathway related to the fuel cycle.