东太平洋多金属结核中稀土元素的测试及其地球化学特征
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摘要: 本文研究了大洋多金属结核中稀土元素的测试方法.多金属结核这种特殊地质样品,含铁、锰一般在20%～40%左右,而铁、锰属富线光谱元素,对稀土元素谱线均有干扰.本文根据样品特性,仅取250mg多金属结核样品,碱熔后,通过小型阳离子树脂交换柱,采用不同类型酸和不同酸度,洗脱交换柱上的杂质和稀土元素,使稀土元素与杂质元素分离.采用此方法测试国家一级多金属结核标准物质GBW07249中的稀土元素,取得了满意结果.同时利用本法测试了东太平洋多金属结核中稀土元素,并对其地球化学特征进行了初步研究.
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关键词:
- 多金属结核 /
- 稀土元素 /
- 感耦等离子体原子发射光谱
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