Northwest Institute of Eco-Environment and Resources, Cas

Beijing Jiaotong University

Hitgen, Inc.

Rong Ma

Tong Wang

Jin Li

Zhiyu Wang

Yingqin Wu

Yanhong Liu

Longmiao Yuan

Fei Pan

Yan Liu

Dengyou Zhang

Lantian Xing

Si Li

Chuntao Tian

Yongxin Chen

Weiping Liu

A method for analyzing light n-alkane components and carbon isotopes in deep and ultra-deep source rocks includes: (S1) subjecting a 5A molecular sieve column to aging; (S2) pyrolyzing a source rock; and allowing a pyrolysis product to enter the 5A molecular sieve column; where n-alkanes are adsorbed and retained by the 5A molecular sieve column; allowing an outflow to pass through a fractionation plate and an empty column or a weak polarity column to be discharged; and (S3) performing programmed heating such that the n-alkanes adsorbed on the 5A molecular sieve column are successively desorbed according to molecular weight, and then pass through the fractionation plate and the HP-5 or DB-5 column to enter a mass spectrometer for composition analysis or isotopic analysis. An analysis system is further provided.

System and method for analyzing light n-alkane components and carbon isotopes in deep and ultra-deep source rock

A preparation method of a molecularly imprinted polymer (MIP) for separation and concentration of 4-methylsterane compounds is provided. A template molecule, a functional monomer, a porogen, an initiator and a cross-linking agent are mixed and subjected to polymerization to prepare a polymer with the template molecule, which is then treated to remove the template molecule, so as to give the desired MIP. The template molecule is β-sitosterol or deoxycholic acid. The obtained molecularly imprinted polymer has multiple stable hole structures and binding sites inside, and has memory and recognition functions for the 4-methylsterane compounds, exhibiting excellent specific adsorption performance. The MIP can contribute to the accurate identification of correlation between depositional environment and maturity of crude oils or source rocks. A molecularly imprinted polymer prepared by such method, a chromatographic column and an application thereof are also provided.

Molecularly imprinted polymer for separation and concentration of 4-methylsterane compounds and preparation and application thereof, and chromatographic column

Astrain with salinity-alkalinity tolerance is provided. The strain is9-2, which has been deposited in China General Microbiological Culture Collection Center (CGMCC) on Oct. 25, 2021, with an accession number of CGMCC No. 23666; and an internal transcribed spacer (ITS) sequence is shown in SEQ ID NO: 1. This application further provides an application of thestrain in the degradation of petroleum hydrocarbons in a saline-alkali environment.

strain and application thereof in the degradation of petroleum hydrocarbons in saline-alkali environment

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Lanzhou, China

Rong Ma