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由氟化稀土元素的单晶截面构成的电极,感应于氟离子活度时,不但超过五个数量级,而且具有对氟离子较其它一般阴离子更高的选择性。这种电极可被用来直接测量氟离子的活度,也可用来检定滴定终点。
Electrodes composed of a single crystal section of fluorinated rare earth elements react with fluoride ion activity of not only more than five orders of magnitude but also have a higher selectivity for fluoride ions than other general anions. This electrode can be used to directly measure the activity of fluoride ions, can also be used to test titration end point.