%0 Journal Article %A Yinhua, Pan %A Maowen, Li %A Yongge., Sun %A Zhiming, Li %A Peng, Liu %A Yuhong, Liao %T Variations of Polar Nso Compounds in Free and Bound Bitumens from a Thermal Maturation Shale Sequence by Esi Ft-Icr Ms %D 2019 %J , %V 2019 %N 1 %P 1-2 %@ 2214-4609 %R https://doi.org/10.3997/2214-4609.201902788 %I European Association of Geoscientists & Engineers, %X %U https://www.earthdoc.org/content/papers/10.3997/2214-4609.201902788