(1999): Composition of organic matter from samples of massive sulfides, bottom sediments, and seawater collected within the Logachev and Broken Spur hydrothermal fields, Mid-Atlantic Ridge. doi:10.1594/PANGAEA.761011...
The composition of soil includes organic matter, minerals, water and air. Which part mainly comes from the atmosphere? A. Organic matter B. Minerals C. Water D. Air 相关知识点: 试题来源: 解析 D。解析:土壤的组成成分中,矿物质(B选项)主要来源于岩石圈;有机物(A选项)主要由生物遗体分解而来,...
Variability in Isotopic ( delta delta 13C, delta delta 15N, delta delta 34S) Composition of Organic Matter Contributing to Detritus-Based Food Webs of the Columbia River Estuary Sources of variability in elemental (C:N) and isotopic (δ13C, δ15N, δ34S) composition of organic matter ...
Carbon isotopes of organic matter were low prior to the onset of stratification, increased to maximum values in late summer, and then decreased following fall overturn. This pattern is controlled mainly by the timing of stratification and primary productivity, which preferentially removes12CO2from the...
The hydrocarbon compositions of atmospheric particulate matter from urban areas of Rio de Janeiro city have been studied to assess the different pollution levels. Samples were acquired using a standard high-volume air sampler (Hi-Vol), extracts were prepared and fractionated into aliphatic and aromatic...
The organic carbon of 280–320 m deep Laurentian Trough sediments at landward and seaward sites (13–24 mgN/g) consisted of carbohydrates (15–22%), hydrolysable amino acids (7–13%), lipids (1–5%), labile proteins (0.3–1%) and a non-characterized fraction (62–74%). Amino acids,...
Linking temperature sensitivity of soil organic matter decomposition to its molecular structure, accessibility, and microbial physiology. Glob. Change Biol. 19, 1114–1125 (2013). Google Scholar Waksman, S. A. & Iyer, K. R. N. Contribution to our knowledge of the chemical nature and origin ...
The organic matter extracted from various mineral horizons of two forest soils, one under silver fir (Abies alba Mill.), the other under European beech (Fagus sylvatica L.), was fractionated by dialysis into three fractions, 100-1000, 1000-8000, and >8000Da. On a C basis, in all horizon...
Dissolved organic matter (DOM) of 27 prairie saline lake ecosystems was investigated in the Northern and Central Great Plains of the United States using absorbance, fluorescence, lignin concentration, and stable C isotope values. The majority of variation in DOM fluorescence among lakes was due to ...
aInfluence of dissolved organic matter character on mercury incorporation by planktonic organisms: An experimental study using oligotrophic water from Patagonian lakes 被溶化的有机物字符的影响对水银并网由planktonic有机体: 一项实验性研究使用oligotrophic水从Patagonian湖 [translate] aAn endless cycle 一个不尽...