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To separate sulfonamides using capillary zone electrophoresis, citrate buffer is superior to phosphate buffer as a background electrolyte. Separation parameters affecting the selectivity and resolution of sulfonamides were optimized. Complete separation of thirteen sulfonamides was rapidly and efficiently achieved within 2.1 min with citrate buffer at pH 6.9. The resolution of peaks between sulfamethoxypyridazine...
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