摘要
为了测定开封市不同地点水源中氟的分布,采用氟离子选择电极作指示电极的直接电位法对7个地点水源中的氟进行了测定。该测定所建立的回归方程为E=-54.45pF-160.8,r=0.9991,线性范围0.4～2mg.L-1。平均回收率为100.8%,RSD=2.58%。开封市不同地点水源中氟的含量在0.5875～2.2744mg.L-1之间。
To determine distribution of fluoride content in water located in different places of Kaifeng,direct potential method with Fluoride ion selective electrode was used to determine the Fluoride in water located in nine places.The regression equation of potential E related to pF was E=-54.45pF-160.8,r=0.9991,the linear range was 0.4～2mg·L-1.The average recovery was 100.8%.Relative standard deviation was 2.58%.The range of fluoride content in water located in nine different places of Kaifeng was between 0.5875 mg·L-1 and 2.2744 mg· L-1.
出处
《开封教育学院学报》
2011年第4期107-108,共2页
Journal of Kaifeng Institute of Education
关键词
氟
离子选择电极
电位法
含量测定
Fluoride
ion-selective electrode
potential method
determination of content
