TITLE

Determination of impurities in magnesium niobate by slurry introduction axially viewed inductively coupled plasma optical emission spectrometry

AUTHOR(S)
Wu, Dongmei; Qu, Haiyun; Dong, Min; Wang, Anbao; He, Pingang; Fang, Yuzhi
PUB. DATE
November 2007
SOURCE
Analytical & Bioanalytical Chemistry;Nov2007, Vol. 389 Issue 6, p2003
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A simple preparation scheme is described for the quantitative analysis of a magnesium niobate sample using slurry introduction axially viewed inductively coupled plasma optical emission spectrometry. Relationships between the stability of slurries and the conditions, such as particle size, pH, dispersant and amount of dispersant, were investigated experimentally. The MgNb2O6 slurry sample was prepared by adding the dispersant sodium polyacrylate and agitation in an ultrasonic bath to ensure good dispersion. Under optimization of pH and amount of dispersant, an analysis of minor and trace impurities (Ba, Ca, Cr, Cu, Fe, Mn, Ni, Pb) in magnesium niobate was accomplished. Applying a paired t test, we showed that the results were in agreement at a 95% confidence level with the reference values obtained by a fusion method for a magnesium niobate sample, which verified that the calibration curves could be established by aqueous standards. Analytical results demonstrate that the factors that affected the accuracy of determination for MgNb2O6 are mainly the particle size of the sample and the stability of slurry.
ACCESSION #
27734016

 

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