An improved ion-exchange/diffusion method for ～(15)N isotope tracing analysis of nitrate in surface waters from watersheds

Weiqi Chen; Weicai Chen; Huanhuan Rao

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An improved ion-exchange/diffusion method for ～(15)N isotope tracing analysis of nitrate in surface waters from watersheds

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摘要

An improved method,suitable for collecting nitrate from surface waters in the watershed for 15 N isotope tracing analysis,was developed on the basis of the anion exchange coupled with diffusion through systematic simulation and comparison experiments.The results showed that the nitrate could be separated and enriched from the waters efficiently by using the improved method.Being simple and practical in operation principle and procedures,cost-economic,and highly efficient in nitrate separation/enrichment,the method met the requirements of δ 15 N mass spectrum analysis and would lay a foundation for the application of 15 N isotope tracing approach to the research on non-point source pollution in watershed.

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《环境科学学报：英文版》 |2010年第5期|784-788|共5页
作者
Weiqi Chen; Weicai Chen; Huanhuan Rao;
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作者单位

State Key Laboratory of Marine Environmental Science;

Xiamen University;

Xiamen 361005;

China;

Environmental Science Research Center;

Xiamen University;

Xiamen 361005;

China;

Coastal and Ocean Management Institute;

Xiamen University;

Xiamen 361005;

China;

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原文格式 PDF
正文语种 chi
中图分类水质监测;地下水动力学;
关键词
同位素示踪; 硝酸盐; 地表水; 流域; 盐分析; 非点源污染; 交换耦合; 示踪分析;

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An improved ion-exchange/diffusion method for ～(15)N isotope tracing analysis of nitrate in surface waters from watersheds

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