Mobility of rare earth elements in the system soils–plants–groundwaters: a case study of an arid area (Oman)حركة العناصر الأرضية النادرة في نظام التربة – النبات – الماء الجوفي : دراسةحالة من منطقة جافة (عُمان)

被引：0
作者：
Khadija Semhi
Osman A. E. Abdalla
Salah Al Khirbash
Tabisam Khan
Salim Asaidi
Sardar Farooq
机构：
[1] CNRS/Université Louis Pasteur,Centre de Géochimie de la Surface
[2] Sultan Qaboos University,College of Science
来源：
Arabian Journal of Geosciences | 2009年 / 2卷
关键词：
Rare earth elements; Fractionation; Transfer; Ophiolites; Trace elements; Oman;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Groundwater samples from six wells and various species of plants from soils developed on ophiolites were collected from an arid area (AlKhod area, Oman) and analyzed for trace elements including rare earth elements (REEs). The distribution patterns of REEs in plants indicated an enrichment in middle REEs (MREEs = Sm to Dy) and heavy REEs (HREEs = Ho to Lu), when they are normalized to the REE composition of the Post Archean Australian Shale (PAAS), with a significant negative anomaly in Ce and a positive anomaly in Eu. Compared to Oman ophiolites, the REEs in different species of plants are depleted in Ce and enriched in MREEs and slightly enriched in light REE (LREE = from La to Nd). Relative to PAAS, the distribution of REEs in groundwaters revealed similar patterns to the REE distribution in plants. The distribution patterns of REEs in plants relative to those in waters are nearly flat. These patterns suggest that the transfer of REEs from soil solutions to the groundwaters in Oman occurs without any significant fractionation.
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页码：143 / 150
页数：7
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