Patents by Inventor Wenguang WU

Wenguang WU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for analyzing stable isotopes of particulate organic carbon (POC) and nitrogen in seawater using elemental analysis-isotope ratio mass spectrometry (EA-IRMS)
    Patent number: 11307123
    Abstract: A method for analyzing stable isotopes of particulate organic carbon (POC) and nitrogen in seawater using elemental analysis-isotope ratio mass spectrometry (EA-IRMS), including: using a glass fiber filter membrane to filter a collected water sample and then filter 100 ml of distilled water; subjecting a resulting membrane sample to acidification; and subjecting an acidified membrane sample to EA-IRMS analysis on a machine, where an oxygen addition time is set to 80 s and a combustion tube temperature is set to 700° C. for an elemental analyzer, and a trap current is set to 300 ?A to 400 ?A for an isotope ratio mass spectrometer. The method of the present disclosure can reduce a detection cost and improve the data accuracy and work efficiency.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: April 19, 2022
    Assignee: YELLOWSEA FISHERIES RESEARCH INSTITUTE, ACADEMY OF FISHERY SCIENCES
    Inventors: Yi Liu, Jihong Zhang, Wenguang Wu, Ke Sun
  • METHOD FOR ANALYZING STABLE ISOTOPES OF PARTICULATE ORGANIC CARBON (POC) AND NITROGEN IN SEAWATER USING ELEMENTAL ANALYSIS-ISOTOPE RATIO MASS SPECTROMETRY (EA-IRMS)
    Publication number: 20220034772
    Abstract: A method for analyzing stable isotopes of particulate organic carbon (POC) and nitrogen in seawater using elemental analysis-isotope ratio mass spectrometry (EA-IRMS), including: using a glass fiber filter membrane to filter a collected water sample and then filter 100 ml of distilled water; subjecting a resulting membrane sample to acidification; and subjecting an acidified membrane sample to EA-IRMS analysis on a machine, where an oxygen addition time is set to 80 s and a combustion tube temperature is set to 700° C. for an elemental analyzer, and a trap current is set to 300 ?A to 400 ?A for an isotope ratio mass spectrometer. The method of the present disclosure can reduce a detection cost and improve the data accuracy and work efficiency.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 3, 2022
    Applicant: YELLOW SEA FISHERIES RESEARCH INSTITUTE, CHINESE ACADEMY OF FISHERY SCIENCES
    Inventors: Yi LIU, Jihong ZHANG, Wenguang WU, Ke SUN