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Abstract
A simple and rapid method for the determination of ethanolamine in water was developed. The problem of ethanolamine preconcentration was solved by adding octane-1-sulfonic acid (OSA) to the water sample and ion pair was sorbed on the precolumn C18. After flushing ion pair of ethanolamine was desorbed to the analytical column with lower concentration of OSA in mobile phase. Electrochemical detection was used. The limit of the detection at 0.88 V and signal/noise ratio of 5 was about 2 ppb. The mean relative standard deviation was 10% at 10 ppb level.