公开(公告)号：US12216071B2

公开(公告)日：2025-02-04

申请号：US17142601

申请日：2021-01-06

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Hao Wang ,  Chengrong Wang ,  Amy C Clingenpeel ,  Kuangnan Qian

IPC: G01N24/08 ,  A01G33/00 ,  C11B1/10 ,  C12Q1/02 ,  C12Q1/06

Abstract: A method and system for direct quantification of the concentration of biomolecules in algal biomass. The biomolecules include lipids, proteins, and carbohydrates. An algae slurry is cultivated within a cultivation vessel, and algal biomass is harvested therefrom. A portion of biomass is analyzed using solvent-lipid analysis to extract lipids and nuclear magnetic resonance spectroscopy is used to quantify the biomolecular concentration of the biomass.

公开(公告)号：US11821868B2

公开(公告)日：2023-11-21

申请号：US17205528

申请日：2021-03-18

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Ashley M. Wittrig ,  Kuangnan Qian ,  Thomas R. Fredriksen

IPC: G01N27/626 ,  H01J49/16 ,  G01N1/38 ,  H01J49/38

CPC classification number: G01N27/628 ,  G01N1/38 ,  H01J49/165 ,  H01J49/38

Abstract: A method for detecting and analyzing olefins in petroleum by electrospray ionization mass spectrometry can include obtaining a hydrocarbon sample comprising at least about 90 wt % of saturate compounds; producing a solution comprising the hydrocarbon sample and a metal salt, the metal salt comprising a metal ion; forming olefin-metal ion complexes by electrospray ionization; and detecting the olefin-metal ion complexes using mass spectrometry.

公开(公告)号：US11674934B2

公开(公告)日：2023-06-13

申请号：US17142786

申请日：2021-01-06

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Anding Zhang ,  Kuangnan Qian ,  Chengrong Wang ,  Amy C. Clingenpeel

IPC: G01N31/12

CPC classification number: G01N31/12 ,  G01N2333/405

Abstract: The present disclosure relates to methods for compositional analysis of algal biomass, specifically weight percent elemental composition. In at least one embodiment, a method for compositional analysis of an algae sample includes flash combusting a first portion of the algae sample to provide a carbon wt %, a hydrogen wt %, and a nitrogen weight %. The method includes pyrolysing a second portion of the algae sample to provide an oxygen wt %. The method includes scanning a third portion of the algae sample using x-ray fluorescence to provide an elemental intensity. The method includes normalizing the elemental intensity using the carbon wt %, the hydrogen wt %, the nitrogen wt %, and/or the oxygen wt %.