【摘要】 水泥样品经超声提取、0.22μm微孔过滤膜过滤,以1.8 mmol/L Na2CO3和1.7 mmol/L NaHCO3溶液作淋洗液,通过阴离子分离柱分离,最后由数据采集系统分析得到结果。Cl-的检出限为30μg/L,工作曲线的线性相关系数为0.9999,通过验证方法正确度与精密度实验,离子色谱法测定水泥中的Cl-含量结果与标准值基本吻合,相对标准偏差不大于1%。该方法线性范围宽,操作简单,干扰因素少,分析速度快,测定结果准确可靠,具有良好的重复性和再现性。更多还原

【Abstract】 The cement sample is extracted with the ultrasonic method.The extracted solution is filtered using a 0.22 μm filter membrane.A Supp 4 type anion separation column is used to purify the obtained solution with the 1.8 mmol/L Na2CO3 and 1.7 mmol/L NaHCO3as eluents.The results show that the detection limit of Cl-is 30 μg/L.The linear correlation is good for the work curve and the linearly dependent coefficient is greater than 0.9999.The Cl-content determined by ion chromatography is basically consistent with the standard value.The relative standard deviation is not more than 1%.The method has wide linear range,simple operation,rapid analysis and less interference factors.The results are accurate and reliable with good repeatability and reproducibility,so it is a good method for determination of chloride ion content in the cement and cement clinker.更多还原