| 摘要: |
| 本文根据1980—1981年间渤海放射性调查获得的资料,探讨了渤海环境中90Sr的含量分布及其变化规律。认为大陆径流以及90Sr、137Cs两核素被土壤吸附和从土壤中解吸的能力差异,是影响渤海环境中90Sr分布及造成137Cs/90Sr比值严重反常的主要因素。 |
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| THE STUDY OF THE DISTRIBUTION OF 90Sr IN MARINE ENVIRONMENT OF BOHAI SEA |
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| Abstract: |
| 90Sr is a little bit higher in Bohai Sea than that in Japan sea and East China Sea, ranging from 7.0 to 24.4Bq/L. So far as the local distribution of 90Sr in Bohai seas is concerned, LiaoDong Bay si 1.5 times higher than central area, Bohai Bay and LaiZhou Bay are in the level of average. In estuaries, the activity of 90Sr decreases with the increase of salt sea-ward. In marine, the highest content of 90Sr is in bone, about 1-2 times higher than that elsewhere. The 90Sr content is high in fine sand, relatively low in mud and sand. The correlation of the distribution of 90Sr in salt, fallout, runoff, sediments and marine species are discussed. The reason why the ratio of 137Cs/90Sr is different from that in other areas s diseassed as well. |
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