Assessment of bioaccumulation of REEs by plant species in a mining area by INAA

被引：24
作者：
Anawar, Hossain Md [1 ]
Freitas, Maria do Carmo [1 ]
Canha, Nuno [1 ]
Dionisio, Isabel [1 ]
Ho Manh Dung [1 ]
Galinha, Catarina [2 ]
Pacheco, A. M. G. [2 ]
机构：
[1] URSN, ITN, P-2686953 Sacavem, Portugal
[2] Univ Tecn Lisboa, Ctr Studies Nat Resources & Environm CERENA IST, P-1049001 Lisbon, Portugal
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2012年 / 294卷 / 03期
关键词：
Rare earth elements; Copper-sulphide mine; Native plants; Lichens; Tailings; RARE-EARTH-ELEMENTS; SOIL;
D O I：
10.1007/s10967-012-1669-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Native plant species, lichens and tailings, sampled from a copper-sulphide mining area located in southern-eastern Portugal, were analysed by neutron activation analysis (INAA) for determination of rare earth elements (REEs). Values of I REEs pound and individual REEs concentration of tailing samples are higher than those of natural background concentrations. The higher values of REEs are found in modern slags and the mixture of oxidized gossan and sulphide disseminated country rocks when compared with the alluvial sediments contaminated by mine tailings. The total concentrations of light REEs are higher than those of heavy REEs in all tailing samples. Distribution patterns of PAAS-normalized REEs in mine tailings show slightly LREE enriched and flat HREE pattern with negative Eu anomaly. Lichens accumulated higher concentration of lanthanides than vascular plants. The elevated levels of REEs in lichen, native plant species and tailing samples reflect the contamination of REEs in So Domingos mining area. The Carlina corymbosa, Erica australis and Lavandula luisierra accumulated the higher amounts of La, Ce and other REEs than the other plant species grown in this mining area.
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页码：377 / 381
页数：5
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