收稿日期: 2007-07-14
修回日期: 2007-11-30
网络出版日期: 2007-12-10
基金资助
广东省自然科学基金项目“珠江水体中硝酸盐的氮氧同位素研究”（编号：04002136）资助.
The Application of Nitrogen and Oxygen Isotopes in the Study of Nitrate in Rivers
Received date: 2007-07-14
Revised date: 2007-11-30
Online published: 2007-12-10
贾国东 , 陈法锦 , 李学辉 . 氮氧同位素在河流硝酸盐研究中的应用[J]. 地球科学进展, 2007 , 22(12) : 1251 -1257 . DOI: 10.11867/j.issn.1001-8166.2007.12.1251
Nitrate pollution has become a serious problem for many years in many rivers of the world. Differentiation of various nitrate sources and knowledge of nitrogen cycling processes occurring in river systems are very important to establish suitable methods for controlling nitrate pollution. Since δ15N and δ18O values vary in different sources of nitrate, more and more researchers attach great importance to the application of nitrogen and oxygen isotopes in riverine nitrate studies. This review summarizes recent trends in the study of distinguishing different sources of nitrate (atmospheric deposition, fertilizer, animal waste, nitrification in soils, etc.) and tracing nitrogen cycling processes, especially denitrification, in river systems by the means of isotope analysis of nitrate. The review also gives a discussion on the study of nitrate in Chinese rivers and proposes some prospects for further studies.
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