改良离子选择电极法测定水样中氟化物

利用带有统计功能的计算器处理离子选择电极法测定数据,可以直接得到水样中氟化物浓度。结果表明,该方法不需要建立标准曲线,相关系数r=0.999 5,检出限0.1 mg/L,相对标准偏差为1.3%,平均回收率98%。

Improved ion selective electrode determination of fluoride in water samples

Using a calculator with statistical functions of the ion selective electrode method of data processing can obtain the concentration of fluoride in water samples.The results showed that this method did not need to establish a standard curve.Correlation coefficient r=0.999 5,detection limit was 0.1 mg/L,the relative standard deviation was 1.3%,the average recovery was 98%.