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吐鲁番是我国最低的盆地,终年极少降雨,日照时间长,是一个典型的干旱地区。该地区自然地理条件独特,没有工业污染,研究该盆地中稀土元素的含量及其分布特征,对土壤学、地球化学和环境科学都有重要意义。 相似文献
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Quantitative analysis of Apollo-17 mare basalt (70017-291) was carried out for its containing 26 elements by instrumental neutron activation technique with the rock standard BCR-1 prepared by the U.S. Geological Survey as the multielement irradiation standard. For most of the elements, the analytical error is confined to 10%. A comparison was made of the analytical results with those obtained from Apollo-11 and Apollo-12 mare basalt samples. 相似文献
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