US 11,860,138 B2
Analysis method and analytical device
Masaki Yamada, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 16/972,174
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Mar. 8, 2019, PCT No. PCT/JP2019/009393
§ 371(c)(1), (2) Date Apr. 19, 2021,
PCT Pub. No. WO2019/235011, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 2018-109023 (JP), filed on Jun. 6, 2018.
Prior Publication US 2021/0262993 A1, Aug. 26, 2021
Int. Cl. G01N 30/72 (2006.01); G01N 27/62 (2021.01); G01N 30/86 (2006.01)
CPC G01N 30/7233 (2013.01) [G01N 27/62 (2013.01); G01N 30/8675 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An analysis method, comprising:
subjecting a sample to liquid chromatography;
performing first mass spectrometry of the sample subjected to the liquid chromatography to detect a first ion corresponding to cholesteryl ester and a second ion corresponding to cholesteryl ester peroxide; and
analyzing a degree of oxidation of the sample based on a ratio between an intensity of the detected first ion and an intensity of the detected second ion.