文档介绍：Effect of nitrogen fertilizer on fluorine species
and soil pH in fluorine –contaminate soil
Wen Chen1,2∗
1. Institute of life science and technology
University of electronic science and technology of China;
Chengdu ,China
2. College of material and chemistry & chemical
engineering
Chengdu University of technology
Chengdu ,China
E-mail: chenwen@
Abstract— In this paper, two kinds of fluorine–contaminate exchangeable fluoride (Ex-F), and they could easily migrate
soils, fluvo-aquic soil and paddy soil, were cultivated by nitrogen and transform each other. Therefore, the content of fluorine
fertilizer. Then, we studied the various fluorine species in the element in soil has significantly positive correlation with its
cultivated soil by sequential extraction method, and study the content level in human beings and domestic animals. Whether
effect of ponents in nitrogen fertilizer on pH of soils. the fluorine species in soil will be changed after fertilizer
After adding nitrogen fertilizer, the pH value of soil would
increase, which consequently led to the water soluble fluoride added? If yes, what is that? And what are the results if the
(Ws-F) increase. The result indicated that the pH value has fluorine species was changed? In order to answer those
significantly positive correlation with the content of Ws-F, and questions,