Trace and major elements in rock samples from Itinguss¨² River Basin, Coroa-Grande, Rio de Janeiro
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- 作者：D. R. Araripe ; L. F. Bellido ; S. R. Patchineelam ; A. V. B. Bellido ; M. T. Guimar?es and M. B. A. Vasconcellos
- 刊名：Journal of Radioanalytical and Nuclear Chemistry
- 出版年：2006
- 出版时间：October, 2006
- 年：2006
- 卷：270
- 期：1
- 页码：103-109
- 全文大小：169 KB
文摘
The goal of the present work was to determine the concentration of 23 elements by instrumental neutron activation analysis in rock samples from the vicinity of Itinguss¨² River, in order to investigate the contribution of trace and major elements from the local lithology to the river basin. The Itinguss¨² River Basin ends in a mangrove area not yet largely impacted by antropogenic activities. So far, there are no data for the concentration of trace elements in that region, even though these data are important to the understanding of the influence of the rocks on the composition of the mangrove sediments. The results showed some enrichment of Th and some light rare earths, probably because of the presence of the mineral allanite and other accessory minerals, as identified by petrographic analysis.