海洋科学2017，Vol.41Issue(10)：58-66,9.DOI:10.11759/hykx20160331006
NOBIAS PA1螯合树脂富集——ICP-MS定量测定近海水体中的稀土元素
Determination of REEs in the seawater adjacent to China using ICP-MS with a Nobias-chelate PA1 resin
摘要
Abstract
The concentration of rare earth elements (REEs) in seawater (pmol/kg) is generally estimated at the pmol/L level.As REEs are useful tools in the study of marine geochemistry,it is necessary to accurately determine their abundance in seawater.In this study,a highly sensitive and precise method is developed using the chelating resin Nobias-chelate PA1 in an offline preconcentration manifold.Magnetic sector detection using inductively coupled plasma mass spectrometry (ICP-MS) was used to analyze the REEs in coastal seawater samples.The optimal experimental parameters were determined when the pH ranges from 4.59-4.69,buffer volume is 6 mL,and elution volume is 2 mL.The detection limits of this method are 0.001 and 0.424 pmol/kg.The relative standard deviations (RSD) of the five replicate analyses of REEs in seawater were observed to be better than 5％.This method can be used to analyze REEs in rivers,estuaries,and seawater.关键词
稀土元素/NOBIAS PA1螯合树脂/固相萃取/小体积/近海水样Key words
rare earth elements/NOBIAS-chelate PA-1/solid-phase extractions/small volume/the adjacent China seawater sample分类
海洋科学引用本文复制引用
梁杰,何会军,麻洪良,杨士凤,张劲..NOBIAS PA1螯合树脂富集——ICP-MS定量测定近海水体中的稀土元素[J].海洋科学,2017,41(10):58-66,9.基金项目
国家自然科学基金项目(41276071,41530965)National Natural Science Foundation of China,No.41276071,41530965 （41276071,41530965）
