| An improved ion-exchange/diffusion method for ～(15)N isotope tracing analysis of nitrate in surface waters from watersheds |
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| 作者姓名： | Weiqi Chen Weicai Chen Huanhuan Rao Luoping Zhang Huasheng Hong |
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| 作者单位： | Weiqi Chen,Luoping Zhang,Huasheng Hong(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);Weicai Chen,Huanhuan Rao(Environmental Science Research Center, Xiamen University, Xiamen 361005, China) |
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| 基金项目： | This work was supported by the Department of Science
and Technology of Fujian Province, China, under the
project No. 2002H009. |
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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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| 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 |
| 收稿时间： | 30 July 2009 |
| 修稿时间： | 30 September 2009 |
An improved ion-exchange/di usion method for 15N isotope tracing analysis of
nitrate in surface waters from watersheds |
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| Weiqi Chen,Weicai Chen,Huanhuan Rao,Luoping Zhang,Huasheng Hong.An improved ion-exchange/di usion method for 15N isotope tracing analysis of
nitrate in surface waters from watersheds[J].Journal of Environmental Sciences,2010,22(5):784-788. |
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| Authors: | Weiqi Chen Weicai Chen Huanhuan Rao Luoping Zhang and Huasheng Hong |
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| Institution: | 1. 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
2. Environmental Science Research Center, Xiamen University, Xiamen 361005, China |
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| Abstract: | An improved method, suitable for collecting nitrate from surface waters in the watershed for 15N isotope tracing analysis, was
developed on the basis of the anion exchange coupled with di usion through systematic simulation and comparison experiments. The
results showed that the nitrate could be separated and enriched from the waters e ciently by using the improved method. Being simple
and practical in operation principle and procedures, cost-economic, and highly e cient in nitrate separation/enrichment, the method
met the requirements of 15N mass spectrum analysis and would lay a foundation for the application of 15N isotope tracing approach to
the research on non-point source pollution in watershed. |
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| Keywords: | anion exchange and di usion nitrate 15N tracing approach surface water watershed |
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