Rare earth elements distribution in marine sediments of Malaysia coasts
来源期刊：JOURNAL OF RARE EARTHS2009年第6期
论文作者：Abdi Mohammad Reza Rezaee Ebrahim Saraee Khadijeh Abdul Khalik Wood Salon B. Elias
Key words：enrichment factor; rare earth elements; marine sediments; South China Sea; shale average;
Abstract: In the east coast Peninsular Malaysia region, sediments are transported by several rivers from the east Malaysia into the South China Sea estuary. In the vicinity of the five river estuaries core sediments were collected in order to investigate rare earth elements (REEs) profile. Core sediments were divided into strata of between 2 to 4 cm intervals and prepared for analyzing by ICP-AES. REE concentrations of 54.3 μg/gr at 24-26 cm in EC4 increased to 114.1 μg/gr at 20-22 cm in EC5. The measured concentration of LREEs and Fe normalized enrichment factors indicated that sediments were not enriched with light rare earth elements derived from effluents of anthropogenic activi-ties. Results of the total concentration were used to establish baseline data in environmental pollution assessment and to develop the correla-lions between the Ce/Ce~* and Eu/Eu~* anomalies and the distribution patterns of some light rare earth elements (LREEs) and the heavy rare earth elements (HREEs). The chondrite-normalized ratios of REEs showed LREEs enrichment and flat HREE depletion.
Abdi Mohammad Reza1，Rezaee Ebrahim Saraee Khadijeh2，Abdul Khalik Wood3，Salon B. Elias2
(1.Department of physics,Faculty of Science,University of Isfahan,Isfahan 1747-73441,LR. Iran;
2.Universiti Putra Malaysia,Physics Department,43400 UPM SERDANG,Selangor,Malaysia;
3.Instrumental Technology Division,Malaysian Institute for Nuclear Technology Research MINT,Bangi,43000 Kajang,Selengor,Malaysia)
Abstract:In the east coast Peninsular Malaysia region, sediments are transported by several rivers from the east Malaysia into the South China Sea estuary. In the vicinity of the five river estuaries core sediments were collected in order to investigate rare earth elements (REEs) profile. Core sediments were divided into strata of between 2 to 4 cm intervals and prepared for analyzing by ICP-AES. REE concentrations of 54.3 μg/gr at 24-26 cm in EC4 increased to 114.1 μg/gr at 20-22 cm in EC5. The measured concentration of LREEs and Fe normalized enrichment factors indicated that sediments were not enriched with light rare earth elements derived from effluents of anthropogenic activi-ties. Results of the total concentration were used to establish baseline data in environmental pollution assessment and to develop the correla-lions between the Ce/Ce~* and Eu/Eu~* anomalies and the distribution patterns of some light rare earth elements (LREEs) and the heavy rare earth elements (HREEs). The chondrite-normalized ratios of REEs showed LREEs enrichment and flat HREE depletion.
Key words:enrichment factor; rare earth elements; marine sediments; South China Sea; shale average;
【全文内容正在添加中】
