| 我国主要食物中239+240Pu、238Pu含量 |
| 摘要点击 623 全文点击 858 投稿时间：1989-08-28 |
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| 中文摘要 |
| 本文用化学分离、电沉积和α谱测量联合分析方法测定了我国主要食物中239+240Pu和238Pu放射性含量。结果表明,主要食物中239+240Pu和238Pu含量都在(1-10)×10-4Bq/kg范围,238Pu含量低于239+240Pu,茶叶中Pu放射性同位素含量偏高。 |
| 英文摘要 |
| Radioactive plutonium isotopes in 16 samples of the main foodstuff collected from nine provinces and autonomous regions of China have been determined by means of radiochemical separation, electrodeposition and alpha-spectrum measurements. The results show that specific radioactivities of both 239+240Pu and 238Pu in the foods-tuft vary from 1×10-4Bq/kg to 1×10-3 Bq/kg, the concentrations of 238Pu in foodstuff are less than 239+240Pu. However, by way of exception, the specific radioactivities of 239+240Pu and 238Pu in tea samples are 7.41×10-3 Bq/kg and 1.33×10-3 Bq/kg respectively. |
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