The Simultaneous Determination of Silicic, Boric and Carbonic Acids in Natural Water via Ion-Exclusion Chromatography with a Charged Aerosol Detector

摘要: The simple and simultaneous determination of silicic, boric carbonic acids was made using ion-exclusion chromatography (IEC) a Corona™ charged aerosol detector (C-CAD). Silicic were separated by the column packed with weakly acidic cation-exchange resin in H+-form ultra-pure water eluent, responses improved addition acetonitrile to eluent. Under optimized conditions, weak inorganic acids, except for acid, successfully performed. When conversion strong Na+- or K+-form inserted between separation detector, including acid could be detected C-CAD. calibration curves linear range 0.5–10 mg·L−1 as Si silicic (r2 = 0.996), 10–100 B 0.998) 1.3–21 C 0.993). detection limits based on three times standard deviation 0.03 0.40 0.08 acid. This method applicable river, hot spring drinking water.