Bi Guiying, Wang Zhizhong, Ma Shuying. Fluorine determination of the soil on loess area[J]. Bulletin of Soiland Water Conservation, 1989, 8(4): 46-49.DOI:
In the determination of soil fluorine on the loess area the method of alkali melting-ion opting eletrode
compared with colorimetric analysis by fluorine reagent and by atizarin-zirconium sulphonate
titration by the thorium nitrate
is with the characters of wider measuring range of 0.05-1
900mg/l
better selection
simple and faster determination
etc..The results obtained with the method show that the rate of recovery is 93-101%
the variation coefficient is mostly less than 5%. The comparison with fluorine content of standard sample demonstrates that the determined results obtained with alkali melting-ion opting electrode are accurater and preciser.