离子色谱法测定土壤中有效氟

Determination of Available Fluorine in Soil Samples by Ion Chromatography

利用离子交换-电导检测离子色谱法对土壤中有效氟进行测定。选用30 mmol/L氢氧化钾溶液作为淋洗液,流速1.20 mL/min,准确测定有效态（可提取态）氟含量。方法加标回收率为95%～108%,精密度好,检出限低,操作简单,对环境无污染,适合于土壤污染状况的调查。

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.