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Deuterium- and 15N-signatures of organic globules in Murchison and Northwest Africa 801 meteorites
meteorites isotope imaging H and N isotope anomalies organic matter aqueous alteration
2017/4/10
Carbonaceous matter from the matrix of the Murchison (CM2) meteorite and Northwest Africa (NWA) 801 (CR2)
meteorite that were extremely rich in deuterium (D) and 15N was studied using in situ isotope...
Spatial relationship between δ15N and elevation in agricultural landscapes
Spatial relationship δ15N elevation agricultural landscapes
2009/10/30
Understanding of the nitrogen (N) cycle and its spatial variability is important for managing ecosystems. Soil δ15N, as an important indicator of different soil nitrogen cycling processes, may provide...
上海-南极洋面大气N2O的δ15N与δ18O时空变化特征
南极 氧化亚氮
2009/2/24
在中国第22次南极科学考察期间, 采用Tedlar气袋采集了“雪龙号”考察船航线上洋面大气样品以及东南极米洛半岛近地面大气样品(采样时间分别为地方时上午10:00和夜间22:00), 在室内通过带有全自动预GC浓缩接口(PreCon)的Thermo Finnigan MAT-253同位素质谱仪, 对这些大气样品中N2O的同位素组成进行了高精度地测量; 并分析了其δ15N与δ18O空间变化规律. 上...