caa a22 4500 445300620 CHVBK 20180317142556.0 cr unu---uuuuu 170323e20100401xx s 000 0 eng 10.1007/s11430-010-0038-7 doi (NATIONALLICENCE)springer-10.1007/s11430-010-0038-7 Stable carbon isotope composition of monoterpanes in essential oils and crude oils [Elektronische Daten] [DaJiang Zhang, PeiRong Wang, ZhiChao Mao, GuanJun Xu] Twenty-five monoterpanes from six types of essential oils and hydrogenated turpentine oil have been identified and their stable carbon isotope composition determined. Monoterpanes in essential oils sourced from terrestrial higher plants display a δ13C value in the range of −34‰-26‰, and mostly between −29‰ and −27‰. The δ13C value of any single monoterpane is very consistent in different essential oils. Acyclic monoterpanes show closer isotope composition between −28.6‰ and −26.2‰, with an average value of −27.7‰. In contrast, the isotope composition of cyclic monoterpanes is more scattered with an average value of −28.6‰. Isotopic fractionation with 13C enrichment has been observed during both artificial and geological hydrogenation of monoterpenoids to monoterpanes, and this is more obvious for the acyclic monoterpenoids. In addition to higher plants, acyclic monoterpane 2,6-dimethylheptane in crude oil can also be originated from other organic inputs. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 monoterpenoids nationallicence stable carbon isotope nationallicence essential oil nationallicence crude oil nationallicence Zhang DaJiang Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut Wang PeiRong Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut Mao ZhiChao Geochemistry Department, Yangtze University, 434023, Jingzhou, China aut Xu GuanJun Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut Science China Earth Sciences SP Science China Press 53/4(2010-04-01), 522-528 1674-7313 53:4<522 2010 53 11430 https://doi.org/10.1007/s11430-010-0038-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-0038-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang DaJiang Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut NATIONALLICENCE 700 1- Wang PeiRong Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut NATIONALLICENCE 700 1- Mao ZhiChao Geochemistry Department, Yangtze University, 434023, Jingzhou, China aut NATIONALLICENCE 700 1- Xu GuanJun Research Institute of Petroleum Exploration & Development, PetroChina, 100083, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/4(2010-04-01), 522-528 1674-7313 53:4<522 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer