Methods The fluoride contents were tested by fluoride selective ion electrode, dental fluorosis prevalence rate of children was examined according to clinical diagnosis standard.

方法：水氟含量采用氟离子选择电极法进行检测，儿童氟斑牙采用三型九度法。

youdao

We tested the quantity of fluoride in tea leaves by separately using fluorinion selective electrode and the ion chromatographys.

我们分别采用离子色谱法和氟离子选择电极法对茶叶中氟化物的含量进行测定。

youdao

The sources of the endemic fluorosis in Weixin, Zhaotong of Yunnan Province has been studied using an ion selective electrode(ISE) and X-ray diffraction analysis(XRD).

运用离子选择性电极（ISE）和X射线衍射分析（XRD）方法，对云南昭通威信地方病氟中毒区的氟源进行了研究。

youdao