Nitrous oxide in the sea
Nitrous oxide in the sea
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DOI：
10.1016/0304-4203(76)90007-4
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发表时间：
1976-06
期刊：
影响因子：
3
通讯作者：
T. Yoshinari
中科院分区：
文献类型：
--
作者：
T. Yoshinari
建立了一种测定海水中氧化亚氮(N2O)的新方法。对640毫升海水样品的分析时间为15分钟，对1000多个不同深度、不同海域的样品进行了分析。在北大西洋西部，海洋深度范围内的N2O浓度特征剖面与氧气剖面呈负相关，达到最大值(C.A.1μg/L)。在加勒比海，N2O的最高浓度达到了比北大西洋更高的浓度。在大西洋表层水中，N2O与大气中的N2O接近平衡，但6月初在圣劳伦斯湾的表层水中观察到N2O的过饱和，3月份在加勒比海的大部分表层样品中观察到N2O的过饱和。从结合氮向大气的地球化学循环来看，海洋中N2O的生成速率可能是重要的。
A new gas chromatographic method was developed for the measurement of nitrous oxide (N2O) in seawater. It takes 15 min for the analysis in a sample of 640 ml seawater.By this method, more than 1000 samples taken over various depths and areas in the sea were analyzed. In the western North Atlantic, the N2O concentration over a range of oceanic depths gave characteristic profiles that were negatively correlated with oxygen profiles, reaching its maximum (c.a. 1 μg/l) in the oxygen-minimum layer at mid-depths. In the Caribbean, the N2O maximum reached higher concentrations than in the North Atlantic. N2O was near equilibrium with that in the atmosphere in Atlantic surface waters, but supersaturation of N2O was observed in surface waters of the Gulf of St. Lawrence in early June and in most surface samples from the Caribbean Sea in March.The estimated rate of N2O production in the sea may be significant in terms of geochemical cycling of combined nitrogen to the atmosphere.