Stable Isotope Signatures of N2O in the Ocean

海洋中 N2O 的稳定同位素特征

• 批准号: 8911425
• 负责人: Tadashi Yoshinari
• 金额: $ 10万
• 依托单位: Health Research Incorporated/New York State Department of Health
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8911425&HistoricalAwards=false
• 关键词: Stable; Isotope; Signatures; N2O; Ocean

Measurements of isotopic ratios of nitrogen and oxygen will be made to evaluate the global significance of denitrification. Recent studies suggest the prevailing view that most marine nitrous oxide arises from nitrification may be in error. It is expected that Monterey Canyon and adjacent waters will provide a representative site for testing this hypothesis. Nitrous oxide is formed as an important intermediate in the marine nitrogen cycle, and all parts of the ocean contribute to the "greenhouse effect" by the evolution of this gas. Laboratory examination of the ratios of N-15/N-14 and 0-18/0-16 also will shed light on the question of whether or not globally significant denitrification can occur in water with oxygen concentrations greater than 2.5 micromolar.

氮和氧的同位素比率的测量将是 以评估反硝化作用的全球意义。 最近的研究表明，大多数海洋生物 由硝化作用产生的氧化亚氮可能是错误的。 是 预计蒙特雷峡谷和邻近的沃茨将提供 一个有代表性的网站来测试这个假设。 二氮 氧化物是海洋中重要的中间体， 氮循环，海洋的所有部分都有助于 “温室效应”是由这种气体的演变引起的。 实验室 对N-15/N-14和0-18/0-16比值的检查也将 揭示了全球是否 在有氧的水中可以发生显著的反硝化作用 浓度大于2.5微摩尔。