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Determination of bromate ion in drinking water by capillary zone electrophoresis with direct photometric detection

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dc.creator Takayanagi, Toshio
dc.creator Ishida, Makoto
dc.creator Mbuna, Julius
dc.creator Driouich, Rim
dc.creator Motomizu, Shoji
dc.date 2016-07-14T20:47:57Z
dc.date 2016-07-14T20:47:57Z
dc.date 2006-09
dc.date.accessioned 2018-03-27T08:54:53Z
dc.date.available 2018-03-27T08:54:53Z
dc.identifier Takayanagi, T., Ishida, M., Mbuna, J., Driouich, R. and Motomizu, S., 2006. Determination of bromate ion in drinking water by capillary zone electrophoresis with direct photometric detection. Journal of chromatography A, 1128(1), pp.298-302.
dc.identifier http://hdl.handle.net/20.500.11810/3196
dc.identifier 10.1016/j.chroma.2006.06.056 · Source: PubMed
dc.identifier.uri http://hdl.handle.net/20.500.11810/3196
dc.description Full text can be accessed at http://www.sciencedirect.com/science/article/pii/S0021967306012143
dc.description Bromate ion in drinking water was determined by capillary zone electrophoresis (CZE) with direct photometric detection. Bromate ion in the sample solution was introduced and concentrated into the capillary by electrokinetic injection for 50s at -10 kV. Electrophoretic separation was made at an applied voltage of -25 kV and bromate ion was detected at wavelength 193 nm, at which the baseline was stabilized with less UV-absorbing acidic phosphate buffer. Bromate ion was detected within 5 min in the electropherogram. By increasing the electric conductivity in the migrating solution with 10 mM Na2SO4, a limit of detection (LOD) of 9 x 10(-10)M (0.1 microg/L BrO3-) was achieved. The proposed method was applied to the analysis of tap water and river water samples, but bromate ion was not detected. Because the practical samples contain relatively large amount of foreign ionic substances, the tap water sample was diluted to avoid the matrix ions. Bromate ion added in a tap water at the concentration of 8 x 10(-8)M was quantitatively recovered by diluting it 1/10.
dc.language en
dc.subject Bromate ion
dc.subject Capillary zone electrophoresis
dc.subject Transient isotachophoresis
dc.title Determination of bromate ion in drinking water by capillary zone electrophoresis with direct photometric detection
dc.type Journal Article


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