Today's disturbance of the global carbon cycle induced by anthropogenic processes has raised new interest in the history of the global carbon cycle and its relationship to climate and other geochemical cycles. Carbon-isotope stratigraphy proves to be most useful as a monitor of the history of the...
carbon fixation 碳固定 carbon isotope 碳同位素 carbon isotope analysis 碳同位素分析 carbon isotope composition 碳同位素组成 carbon monoxide 一氧化碳 carbon source 碳源 carbonate 碳酸盐,碳酸酯 carbonate plant 碳化植物 carbonic anhydrase 碳酸酐酶 carbonium ion 碳正离子 carbonyl 羰基 carbonylation 羰基化 carbox...
& Fine Chemicals;Isotope Labelled Compounds;Used in medicine and Food Additives;vitamin;Inhibitors;通用生化试剂-维生素;维生素C 系列;工业化;医用;临床检测标准物质;bc0001 Mol文件50-81-7.mol 结构式 维生素C 性质 熔点190-194 °C (dec.) 比旋光度20.5 º (c=10,H2O) ...
4.3. Isotope systematics Carbonate δ13C (PDB) and δ18O (SMOW) data of forty nine QCV samples from trenches and drill cores of different mines of the GGF are given in Table 3. All these isotopic ratios in QCVs, are not only similar to the isotopic ratios in hydrothermal carbonates (δ...
Supplements;Vitamin Ingredients;Carbohydrates & Derivatives;Intermediates & Fine Chemicals;Isotope Labelled Compounds;Used in medicine and Food Additives;vitamin;bc0001 Mol文件50-81-7.mol 结构式 纳米脂质体维生素C 性质 熔点190-194 °C (dec.)
C-H-O-S isotope 0. 引言 “双碳”目标下,地热资源作为非碳基能源、清洁能源和可再生能源,迎来了难得的发展机遇。云南省位于印度板块和欧亚板块的碰撞带内,构造活动强烈,大地热流值高,区内温泉露头数量众多,是我国地热最丰富的省份之一,具有广阔的地热资源开发利用前景。
相比而言,宁国组底部灰岩的碳氧同位素组成与正常海相或湖相碳酸盐岩均有一定的差异。 表3.浙江江山宁国组底部灰岩碳氧同位素数据‰ Table 3.Carbon and oxygen isotope data of limestones at the bottom of Ningguo Formation, in Jiangshan, Zhejiang
22. The lack of tools to effectively characterize DIC sources across multiple catchments without requiring mass balance exercises or controlled experiments is one of the key reasons for this persistent knowledge gap. The stable carbon isotope value of DIC,13C-DIC/12C-DIC (δ13C-DIC) bears the...
To advance isotope ratio analysis of an additional element, we present compound-specific 15N/14N analysis of glyphosate and AMPA by a two step derivatization in combination with gas chromatography/isotope ratio mass spectrometry (GC/IRMS). The N-H group was derivatized with isopropyl chloroformate ...
For labeling experiments, NaHCO3 and glucose were replaced by NaH13CO3 and [U-13C]-glucose, respectively (both 99% purity; Cambridge Isotope Laboratories, Andover, MA). Quenching and extraction of intracellular metabolites Quenching and metabolite extraction were carried out as previously described ...