NDLI: Determination of the rare earth elements La, Eu, and Yb using solidified floating organic drop microextraction and electrothermal vaporization ICP-MS

Content Provider	Springer Nature Link
Author	Chen, Shizhong Cheng, Xiuli He, Yuanyuan Zhu, Shengping Lu, Dengbo
Copyright Year	2013
Abstract	We have developed a method for the determination of trace levels of the rare earth elements La, Eu, and Yb in biological and environmental samples. It is based on solidified floating organic drop microextraction using 1-(2-pyridylazo)-2-naphthol (PAN) as a chelator, followed by electrothermal vaporization (ETV) and quantification by inductively coupled plasma mass spectrometry. PAN also acts as a modifier in ETV. The effects of pH, amount of PAN, extraction time, stirring rate, volume of sample solution, and temperature program were examined. Under optimized conditions, the detection limits are 2.1, 0.65 and 0.91 pg mL−1 for the elements La, Eu and Yb, respectively. The relative standard deviations are <6.0 % (c = 0.1 ng mL−1, n = 9). When applied to the analysis of (spiked) natural water samples, the recoveries range from 92 to 105 %. The accuracy was validated with certified reference materials (combined sample of branch and leaf of shrub: GBW 07603 and human hair: GBW 07601), and the results were in good agreement with the certified values. Figure ►Solidified floating organic drop microextraction was combined with ETV for ICP-MS. ►PAN acted as both a chelating agent and a chemical modifier. ►The method was used for analysis of rare earth elements in real samples. ►The method has the merits of low detection limit, good precision and accuracy.
Starting Page	1479
Ending Page	1486
Page Count	8
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	180
Issue Number	15-16
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2013-10-03
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Solidified floating organic drop microextraction Electrothermal vaporization Inductively coupled plasma mass spectrometry Rare earth element Biological and environmental samples Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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