[Conclusion] Ion electrode method could meet the needs of determining fluoride content in the soil with higher detection precision and accuracy,which was helpful to be generalized.

This study indicates that the ART combined with the linear current distribution in arc root measured via split electrode method is an effective and practical approach to reconstruct the current density distribution in moving anode arc root.

Determination of sodium of salt lake by ion selective electrode method;

This paper expounds the significance of fluoride detection, and introduces some experiences of detecting the fluorine ions by using ion selective electrode method.

The analyses of fluoride by ion selective electrode method, colorimetry, ion chromatography, liquid chromatography, gas chromatography in the last few years have been introduced, and a prospect of its develo pments is also proposed.

The research of determining ammonium in the ground water with Ion-selective electrode;