Determination of Nitrogen and Oxygen Isotopes in Nitrates: A Minireview
文献类型: 外文期刊
第一作者: Dai, Shouhui
作者: Dai, Shouhui;Xu, Huilong;Shen, Qi;Zhang, Yun;Sun, Aijun;Xie, Luhua;Peng, Long;Bi, Xinhui;Yang, Hui
作者机构:
关键词: Isotope ratio mass spectrometry;nitrate;nitrogen isotopes;oxygen isotopes
期刊名称:ANALYTICAL LETTERS ( 影响因子:2.329; 五年影响因子:1.738 )
ISSN: 0003-2719
年卷期: 2017 年 50 卷 13 期
页码:
收录情况: SCI
摘要: Nitrogen and oxygen isotope ratios (delta N-15 and delta O-18) in nitrates are important in hydrology, oceanography, atmospheric chemistry, and agriculture. This paper reviews current isotope ratio mass spectrometry methods for the determination of nitrogen and oxygen isotopes in nitrates that include graphite combustion, AgNO3-ion exchange, Ba(NO3)(2)-acetone, two-step chemical conversion, bacterial approaches, and off-axis integral cavity output laser spectroscopy. This paper introduces the principles, processes, advantages, and disadvantages of these procedures. Future studies should focus on the determination of oxygen isotopes. The development of novel spectroscopic or other isotopic methodology may also be new research directions. In addition, in some nitrates, delta O-17 is more sensitive than traditional delta O-18 and further development for this isotope is of interest. In addition, the determination of delta O-17 may be used to more accurately evaluate delta O-18.
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