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The Effect of High Concentration Cation Matrix on the Analysis of the Low Anion Concentration in Suppressed Ion Chromatography
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.6, pp.495-498
Kang,
M., &
Lee,
S.
(1998). The Effect of High Concentration Cation Matrix on the Analysis of the Low Anion Concentration in Suppressed Ion Chromatography. Analytical Science and Technology, 11(6), 495-498.
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Abstract
The effect of high concentration ion matrix on the analysis of low anion concentration in the suppressed ion chromatography was studied. The anions studied were <TEX>$Br^-$</TEX>, <TEX>$NO_3{^-}$</TEX>, <TEX>$HPO_4^{2-}$</TEX>, <TEX>$SO_4^{2-}$</TEX>, and <TEX>$C_2O_4^{2-}$</TEX> in the presence of excess NaCl and <TEX>$CaCl_2$</TEX>. In this study we suggested that the erroneous results in the suppressed ion chromatographic determination of small concentration of anions were not caused by the interaction of large amount of cation in the suppressor, but by the interaction of cation with concerned anion in the original solution. The error in the analysis of such anion can not be eliminated just by dilution. Therefore, we suggested that standard addition method might be adequate for analyses of those samples.
- keywords
- suppressed ion chromatography, low anion concentration analysis
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