摘要
水体硝酸盐污染已经成为一个相当普遍且重要的环境问题.为了保证人类的身体健康、水环境的良性演化,有效识别水体中硝酸盐污染的来源就显得尤为重要.水体中不同来源的硝酸盐具有不同的氮、氧稳定同位素组成,因此,可以利用氮、氧稳定同位素对水体中的硝酸盐污染进行源识别.本文介绍了氮、氧稳定同位素在氮循环主要过程中的分馏系数和主要硝酸盐来源的氮、氧稳定同位素组成,对比了5种硝酸盐氮、氧同位素分析预处理方法的优缺点,综述了国内外学者在该方向的研究进展并划分为3个阶段:单独使用氮稳定同位素;同时使用氮、氧稳定同位素;结合数学模型的应用.最后,对该领域今后的研究方向进行了展望.
Water body＇ s nitrate pollution has become a common and severe environmental problem. In order to ensure human health and water environment benign evolution, it is of great importance to effectively identify the nitrate pollution sources of water body. Because of the discrepant composition of nitrogen and oxygen stable isotopes in different sources of nitrate in water body, nitrogen and oxy- gen stable isotopes can be used to identify the nitrate pollution sources of water environment. This paper introduced the fractionation factors of nitrogen and oxygen stable isotopes in the main proces- ses of nitrogen cycling and the composition of these stable isotopes in main nitrate sources, com- pared the advantages and disadvantages of five pre-treatment methods for analyzing the nitrogen and oxygen isotopes in nitrate, and summarized the research advances in this aspect into three stages, i. e. , using nitrogen stable isotope alone, using nitrogen and oxygen stable isotopes simultaneously, and combining with mathematical models. The future research directions regarding the nitrate pollu- tion sources identification of water environment were also discussed.
出处
《应用生态学报》
CAS
CSCD
北大核心
2013年第4期1146-1152,共7页
Chinese Journal of Applied Ecology
基金
国家水体污染控制重大专项(2008ZX07101-006)资助
关键词
硝酸盐
源识别
稳定同位素技术
预处理方法
nitrate
source identification
stable isotope technique
pre-treatment method.
