Determination of Available Fluorine in Soil Samples by Ion Chromatography

An ion chromatographic method with ionexchange and conductivity detection was used to determine available fluorine in soil samples. Using 30 mmol/L of KOH solution as eluent and at flow rate of 1.20 mL/min, the content of available fluorine in sample solution could be determined. The recovery of method for available fluorine was 95%～108%. The method provides the advantages of good precision, lower detection limit, simple operation, environment friendly and can be used in the soil contamination survey.