Determination of rare earth elements in seawater by ICP-MS after preconcentration with a chelating resin-packed minicolumn
- 標題
- Determination of rare earth elements in seawater by ICP-MS after preconcentration with a chelating resin-packed minicolumn
- 作者
- Yanbei Zhu, Akihide Itoh, Eiji Fujimori, Tomonari Umemura, Hiroki Haraguchi
- 文件屬性
- 國外期刊
- 知識分類
- 礦物質分離
- 出版年
- 2006
- 刊名
- Journal of Alloys and Compounds
- 關鍵字
- Rare earth elements; Seawater; ICP-MS; Chelating resin-packed minicolumn
- 點閱數
- 2448
摘要
Rare earth elements (REEs) in seawater were preconcentrated 20-fold (from 50 to 2.5 ml) by a chelating resin-packed minicolumn device and determined by inductively coupled plasma mass spectrometry (ICP-MS). The recoveries for REEs were in the range from 90% for Eu and Dy to 98% for Yb, and their standard deviations were less than 4%. The lower detection limits for REEs ranged from 0.06 ng l−1 for Lu to 0.5 ng l−1 for Sm. The analytical results for REEs in seawater reference materials (NASS-5, CASS-3, and CASS-4), the Take Island coastal seawater, and the Ise Bay coastal seawater were evaluated as the REE distribution patterns with shale-normalization and deep seawater-normalization. Slight relative enrichments of heavy REEs were observed in the Take Island coastal seawater and the Ise Bay coastal seawater, which might be attributed to the input from the river flows containing more dissolved heavy REEs. In addition, positive anomalies of Sm were found in the normalized REE distribution patterns for NASS-5, CASS-3, and CASS-4, which would be attributed to the contamination in the preparation process of reference materials by NRC.