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Determination of Some Inorganic Anions in Saline Water by Ion Chromatography with UV Detection
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.2, pp.99-104
Han,
S. H., Park,
Y. S., Park,
S. D., Joe,
K. S., &
Eom,
T.
Y.
(1999). Determination of Some Inorganic Anions in Saline Water by Ion Chromatography with UV Detection. Analytical Science and Technology, 12(2), 99-104.
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Abstract
A stepwise gradient elution with two wavelengths detection was performed for the separation and determination of some anions in saline water. The eight anions such as iodate, bromate, nitrite, bromide, nitrate, chromate, iodide and thiocyanate were successfully separated using AS-7 column and sodium chloride/sodium phosphate buffer solution as an eluant within 40 min. The separation behaviors of anions were studied at various sodium chloride concentrations. The peak shapes of anions of bromate, nitrite, bromide and nitrate gradually broadened as the concentration of sodium chloride increased until 1.0 M in the sample solutions. However, no effect was observed in the peak shapes of chromate, iodide and thiocynate. A good linearity was obtained at the range of ppm(mg/L). The detection limit was proved to be <TEX>$10-720{\mu}g/L$</TEX> for the eight anions with <TEX>$50{\mu}L$</TEX> injection volume. This method was applied to the determination of <TEX>$Br^-$</TEX>, <TEX>${NO_3}^-$</TEX> and <TEX>$I^-$</TEX> in sea water.
- keywords
- ion chromatography, saline water, inorganic anions analysis
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