分析测试学报2011，Vol.30Issue(12)：1430-1435,6.DOI:10.3969/j.issn.1004-4957.2011.12.019
聚丙烯酸螯合-超滤分离富集电感耦合等离子体质谱测定近岸及河口海水中24种痕量稀土及金属元素
Determination of 24 Trace Level of Rare Earth and Metal Elements in Coastal and Estuarine Seawater by Polymer Complexation -Ultrafiltration Technique and Inductively Coupled Plasma Mass Spectrometry
摘要
Abstract
A method of polyacrylic acid-complexation and ultrafiltration for matrix modification and inductively coupled plasma mass spectrometry (ICP - MS ) was developed for the determination of 24 trace level of rare earth elements ( REEs ) and metal elements in coastal and estuarine seawater. REEs ions, Cu , Pb 2+ , Cd , Co 2+ , Ni could reacted with polyacrylic acid (PAA) to form stable complexes when the pH value was above 7. 5, which could be separated and enriched absolutely after trapped and eluted from the ultrafilter. Full quantitative data collection mode and internal standard calibration curve were used for the ICP - MS determination. Under the optimized conditions, the relative standard deviations ( RSDs) were in the range of 1. 7% -7. 3% , and the spiked recoveries were between 73% and 96% . The limits of quantitation (LOQs, 10σ) ranged from 0. 23 ng/L to 13. 9 ng/L. The method blank ranged from 0. 09 ng/L to 8. 38 ng/L. The developed method could be applied in the simultaneous determination of REEs and metal elements in coastal and estuarine seawater.关键词
聚丙烯酸-金属螯合物/超滤/电感耦合等离子体质谱/海水/稀土及金属元素Key words
poly ( acrylic acid ) - metal complex/ ultrafiltration/ inductively coupled plasma mass spectrometry/ seawater/ rare earth and metal elements分类
化学化工引用本文复制引用
林继军,林文博,弓振斌,段华玲,黄佳华..聚丙烯酸螯合-超滤分离富集电感耦合等离子体质谱测定近岸及河口海水中24种痕量稀土及金属元素[J].分析测试学报,2011,30(12):1430-1435,6.基金项目
厦门大学近海海洋环境科学国家重点实验室自主创新项目(MELRI0703) （MELRI0703）
