摘要
通过对212块马兰黄土样品的分析,获得了其微量元素Zn、Cu、Mn、Co、Ni的常见含量范围和自然背景值。它们在马兰黄土中的组合特征具有明显的同步变化趋势,而且组成比例稳定。上述各元素在黄河中游马兰黄土中的含量均自西北而东南增加。虽然它们在马兰黄土中的含量正常,但由于马兰黄土的介质环境不利于各元素的活化,活性较小,有效态含量较低。黄土性土壤中的情况与其黄土母质相似。
212 samples of the MaLan loess were chemically analyzed for the normal and natu-ral background values of the trace elements Zn. Cu, Mn, Co, and Ni. The analytical re-sults show a tendency of synchronous variation in t race element assoeiation and a stable compositional ratio. In the Malan loess from the middle reaches of the Yellow River these trace elements show an increase in content from nor hwest to southeast. Although the content of these elements falls within a, normal range, their effective content is re-latively low because of the medium conditions for the Malan loess unfavourable for the activation of these elements, In this aspect there is no difference between loessic soil and its parent material-loess.
出处
《地球化学》
CAS
1986年第3期284-291,共8页
Geochimica
