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九龙江—厦门湾河口区溶解226Ra的分布

, PP. 50-55

Keywords: 226Ra,河口,非保守,分布

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Abstract:

利用锰纤维富集和直接射气法测定海水中226Ra的方法,对九龙江-厦门湾溶解226Ra的分布进行了一次调查。结果发现在河口区内溶解态的226Ra呈非保守行为,与世界上几大河流河口区226Ra的行为极为相似。在海门岛附近的水体中(S≈9)发现溶解态226Ra浓度最大,其值为0.598dpm/dm3,说明咸淡水在此处混合最激烈。本河口区溶解226Ra的最大值比Mississippi河的值小,比其他河流的值大2~5倍。

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