Direct Analysis of Trace Rare EartHElements Through Nanometer-size Titanium Dioxide Separation/Concentration and Fluorination Assisted ETV-ICP-AES with Slurry Sampling

Abstract

Abstract: In this paper, nanometer-size titanium dioxide(NSTD) is employed as a new type of adsorption material to separate and concentrate trace rare eartHElements(Y, Yb, Eu, La, Dy, Tm, Sm, Ho, Nd, Pr).The results show that NSTD can quantitatively adsorbed the ions of the elements under the condition of optimal pH(7.0).The ions adsorbed on NSTD can be directly determined with fluorination assisted electrothermal vaporization inductively coupled plasma atomic emission spectrometry(FETV-ICP-AES) through slurry sampling without elution at proper ashing temperature(600℃) and vaporization temperature(2400℃).The detection limit of those elementSIs 0.1, 0.08, 0.2, 0.3, 0.4, 0.1, 0.4, 0.1, 0.3 and 0.5 ng, respectively, and the corresponding RSD is 2.0%, 1.6%, 2.9%, 2.1%, 3.0%, 1.6%, 2.2%, 1.4%, 2.7% and 3.1%, respectively.

Key words: Nanometer-size material, Adsorption, Slurry sampling, Fluorination assisted electrothermal vaporization, Rare eartHElement

CLC Number:

O657.31

TrendMD:

HANG Yi-Ping, QIN Yong-Chao, JIANG Zu-Cheng, HU Bin . Direct Analysis of Trace Rare EartHElements Through Nanometer-size Titanium Dioxide Separation/Concentration and Fluorination Assisted ETV-ICP-AES with Slurry Sampling[J]. Chem. J. Chinese Universities, 2003, 24(11): 1980.

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Direct Analysis of Trace Rare EartHElements Through Nanometer-size Titanium Dioxide Separation/Concentration and Fluorination Assisted ETV-ICP-AES with Slurry Sampling

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