离子色谱法测定中国实验快堆三回路水中痕量Cl^-和SO_4^(2-)

The determination of trace chloride and sulfate in tertiary circuit water of CEFR by ion chromatography

用离子色谱法对中国实验快堆三回路水中痕量氯离子和硫酸根的测定进行了研究。通过手工配制NaOH淋洗液,1mL大体积直接进样,并使用高容量色谱柱,优化最佳工作条件,使Cl-和SO42-浓度在(1～200)μg/L范围内线性关系良好,线性相关系数分别为0.999 1和0.999 0,背景电导和检出限低,其中Cl-检出限为0.45μg/L,SO42-检出限为0.71μg/L,精密度和准确度高,该法可作为快堆三回路水中痕量Cl-和SO42-的测定方法。

The paper was studied the determination of trace chloride and sulfate in tertiary circuit water of CEFR by ion chromatography. The method was adopted sodium hydroxide eluent compounding by handwork,large-volume direct injection technique and a high capability anion-exchange column. Working conditions were optimized. Experimental results showed that the analysis linearities of chloride and sulfate in each range of （1 200） μg/L were good, and the correlative coefficients were 0. 999 1 and 0.999 0 separately for chloride and sulfate. The background conductance and detection limits were low,Cl^-0.45 μg/L and SO42- 0. 71μg/L. The result of precision and accuracy was also satisfactory. The method can be used to determine the trace anions of chloride and sulfate in tertiary circuit water of CEFR.