Ion-exchange method in the collection of nitrate from freshwater ecosystems for nitrogen and oxygen isotope analysis: a review
2015
Li, Wen-Bing | Song, Yao-Bin | Xu, Hong-Ke | Chen, Ling-Yun | Dai, Wen-Hong | Dong, Ming
Nitrate (NO₃ ⁻) contamination of freshwater is considered one of the most prevalent global environmental problems. Dual stable isotopic compositions (δ¹⁵N and δ¹⁸O) of NO₃ ⁻ can provide helpful information and have been well documented as being a powerful tool to track the source of NO₃ ⁻ in freshwater ecosystems. The ion-exchange method is a reliable and precise technique for measuring the δ¹⁵N and δ¹⁸O of NO₃ ⁻ and has been widely employed to collect NO₃ ⁻ from freshwater ecosystems. This review summarizes and presents the principles, affecting factors and corresponding significant improvements of the ion-exchange method. Finally, potential improvements and perspectives for the applicability of this method are also discussed, as are suggestions for further research and development drawn from the overall conclusions.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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