Ideas and perspectives: the same carbon behaves like different elements - an insight into position-specific isotope distributions | |
He YY(何雨旸)4; Cao XB1,2; Bao HM1,2,3 | |
刊名 | BIOGEOSCIENCES |
2020-10-02 | |
卷号 | 17期号:19页码:4785-4795 |
ISSN号 | 1726-4170 |
DOI | 10.5194/bg-17-4785-2020 |
英文摘要 | It is expected that information on the source, reaction pathway, and reaction kinetics of an organic compound can be obtained from its position-specific isotope compositions or intramolecular isotope distribution (Intra-ID). To retrieve the information, we could use its predicted equilibrium Intra-ID as a reference for understanding the observed Intra-IDs. Historically, observed, apparently close-to-equilibrium carbon Intra-ID has prompted an open debate on the nature of biosystems and specifically the pervasiveness of reversible biochemical reactions. Much of the debate remains unresolved, and the discussion has not clearly distinguished between two states of equilibrium: (1) the equilibrium among the corresponding bond-breaking and bond-forming positions in reactant and product and (2) the equilibrium among all carbon positions within a compound. For an organic molecule with multiple carbon positions, equilibrium carbon Intra-ID can be attained only when a specific reaction is in equilibrium and the sources of each position are also in equilibrium with each other. An observed Intra-ID provides limited information on if the sources and pathways are both unconstrained. Here, we elaborate on this insight using examples of the observed Intra-IDs of hydroxyl-bearing minerals, N2O, and acetic acid. Research effort aiming to calibrate position-specific equilibrium and kinetic isotope fractionation factors for defined processes will help to interpret observed Intra-IDs of a compound accurately and fully. |
分类号 | 二类/Q1 |
资助项目 | China Postdoctoral Science Foundation[2019M660811] ; National Natural Science Foundation of China[41490635] ; Chinese Academy of Sciences[XDB18010104] |
WOS关键词 | C-13 DISTRIBUTIONS ; ACTIVATED COMPLEX ; SULFATE REDUCTION ; SITE PREFERENCE ; NORTH PACIFIC ; NITROUS-OXIDE ; ACETIC-ACID ; FRACTIONATION ; OXYGEN ; EQUILIBRIUM |
WOS研究方向 | Environmental Sciences & Ecology ; Geology |
语种 | 英语 |
WOS记录号 | WOS:000577142500002 |
资助机构 | China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; Chinese Academy of Sciences |
其他责任者 | He, Yuyang |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/85348] |
专题 | 力学研究所_高温气体动力学国家重点实验室 |
作者单位 | 1.Nanjing Univ, Int Ctr Isotope Effects Res, Nanjing 210023, Peoples R China; 2.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China; 3.Louisiana State Univ, Dept Geol & Geophys, E235 Howe Russell Kniffen, Baton Rouge, LA 70803 USA 4.Chinese Acad Sci, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China; |
推荐引用方式 GB/T 7714 | He YY,Cao XB,Bao HM. Ideas and perspectives: the same carbon behaves like different elements - an insight into position-specific isotope distributions[J]. BIOGEOSCIENCES,2020,17(19):4785-4795. |
APA | 何雨旸,Cao XB,&Bao HM.(2020).Ideas and perspectives: the same carbon behaves like different elements - an insight into position-specific isotope distributions.BIOGEOSCIENCES,17(19),4785-4795. |
MLA | 何雨旸,et al."Ideas and perspectives: the same carbon behaves like different elements - an insight into position-specific isotope distributions".BIOGEOSCIENCES 17.19(2020):4785-4795. |
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