同位素示踪技术在环境领域中的应用研究

摘要

As an effective tracing method, stable nitrogen isotope is significant for studying the nitrogen cycling and contributions of exogenous organic matters to the sediments, especially for identifying source of nitrogen pollution. This paper has briefly summarized the nitrogen isotope application and fractionation effect, reviewed and discussed its applications for tracing and identifying nitrogen sources in the eutrophication lake, and proposed the prospective of the research on the nitrogen isotope for tracing environmental pollution sources.%稳定碳氮同位素作为一种有效的示踪手段,在研究外源有机质来源和氮循环,特别是污染源的识别方面有着重要意义.在简要总结碳氮同位素的应用现状、分馏效应的基础上,重点论述和分析了稳定氮同位素在富营养化湖泊中的氮源识别,并结合研究现状探讨了研究前景.