公开(公告)号：US20220334093A1

公开(公告)日：2022-10-20

申请号：US17624396

申请日：2020-07-03

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Kanetomo SATO ,  Norio NUMATA

IPC: G01N30/88 ,  G01N33/44

Abstract: Provided is a method for determining origin of carbon source of chemical substance, which makes it possible to determine whether resource-recycled carbon is used as a carbon raw material from a chemical substance in various goods. The method for determining origin of carbon source of chemical substance includes: a step S1 of acquiring a carbon-14 content rate R1 of a standard chemical substance having carbon element in which carbon has been recycled as a resource; a step S2 of acquiring a carbon-14 content rate R2 of a chemical substance to be identified; a step S3 of calculating a ratio (R2/R1) of the content rate R2 to the content rate R1; and a step S4 of determining that a carbon raw material in the chemical substance to be identified contains resource-recycled carbon based on the ratio (R2/R1).