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本文提出了氟离子选择电极二参数逼近法测定自来水中氟的方法。通过实验比较了柠檬酸钠及DCTA 作掩蔽剂时自来水中氟的回收率。讨论了络合剂浓度对测定结果的影响。确定氟电极测定自来水中氟时采用DCTA 作掩蔽剂较好。
This paper presents a fluoride ion selective electrode two parameter approximation method for the determination of fluoride in tap water. The recovery of fluoride in tap water was compared by experiments with sodium citrate and DCTA as masking agent. The effect of complexing agent concentration on the determination results was discussed. It is better to use DCTA as masking agent to determine the fluoride electrode when measuring fluoride in tap water.