| Abstract: | Abstract In previous papers the authors reported that nonsuppressed ion chromatography using potassium hydroxide solution as an eluent was a very sensitive and effective method for the analysis of anions and that this method could be applied to the determination of anions in environmental water samples. In this paper, this method was applied to the determination of silicate without the interference of fluoride ion when using 0.5mM potassium hydroxide solution, Moreover, this method was compared with silicomolybdate methods and good agreement was obtained between these two methods. The percent standard deviation was 5.5% when determining lppm of silicate and the calibration curve was linear at concentrations less than 2.5ppm. The detection limit was less than 50ppb. |
