US 12,222,284 B2
Method for quickly measuring content polycyclic aromatic hydrocarbon in carbon black
Hong-Zhang Chen, Kaohsiung (TW); and Jheng-Guang Li, Kaohsiung (TW)
Assigned to Linyuan Advanced Materials Technology Co., Ltd., Kaohsiung (TW)
Filed by LINYUAN ADVANCED MATERIALS TECHNOLOGY CO., LTD., Kaohsiung (TW)
Filed on Apr. 7, 2022, as Appl. No. 17/715,382.
Claims priority of application No. 110112877 (TW), filed on Apr. 9, 2021.
Prior Publication US 2022/0326146 A1, Oct. 13, 2022
Int. Cl. G01N 21/33 (2006.01); A61B 5/0215 (2006.01); A61B 6/58 (2024.01); G01N 21/31 (2006.01)
CPC G01N 21/33 (2013.01) [A61B 5/02156 (2013.01); A61B 6/582 (2013.01); G01N 2021/3125 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for measuring a content of a polycyclic aromatic hydrocarbon in a carbon black, consisting of the following steps:
extracting a carbon black to be measured using an organic solvent to obtain a sample to be tested;
testing the sample to be tested by an ultraviolet-visible spectrometer to obtain an absorbance measurement of the sample; and using the obtained absorbance measurement and a calibration curve to obtain a content of a polycyclic aromatic hydrocarbon in the sample to be tested, wherein the calibration curve illustrates a relationship between the absorbance measurement of the polycyclic aromatic hydrocarbon and the content of the polycyclic aromatic hydrocarbon, wherein the polycyclic aromatic hydrocarbon is soluble in the organic solvent, wherein the calibration curve is corrected by linear regression; and wherein the calibration curve takes the absorbance measurement of the polycyclic aromatic hydrocarbon as data on a vertical axis and the content of the polycyclic aromatic hydrocarbon as data on a horizontal axis.