LI Ting,LI Bing-ning,LIU Ling-ling,AN Hao-yue,WANG Shen-nan,ZHAO Chong-yan,WU Yan-wen.Research on the Detection Method of Mineral Oil Aromatic Hydrocarbons with Three or More Benzene Rings in Printing Inks[J].Journal of Instrumental Analysis,2025,44(09):1994-2000.
LI Ting,LI Bing-ning,LIU Ling-ling,AN Hao-yue,WANG Shen-nan,ZHAO Chong-yan,WU Yan-wen.Research on the Detection Method of Mineral Oil Aromatic Hydrocarbons with Three or More Benzene Rings in Printing Inks[J].Journal of Instrumental Analysis,2025,44(09):1994-2000. DOI: 10.12452/j.fxcsxb.25060904.
Research on the Detection Method of Mineral Oil Aromatic Hydrocarbons with Three or More Benzene Rings in Printing Inks
Addressing the challenges of the lack of detection methods and severe matrix interference for mineral oil aromatic hydrocarbons with three or more rings(3P-MOAH) in printing inks,this study developed a quantitative analytical method based on multi-stage purification coupled with liquid chromatography-gas chromatography-hydrogen flame ionization detection. Through solvent extraction,silica gel column and amino column purification technology,mineral oil saturated hydrocarbons,1-2 ring mineral oil aromatic hydro
carbons and olefin interfering components in the ink are effectively removed. An optimized gradient elution program(
n
-hexane/dichloromethane system) on the amino column achieved online separation of three or more rings in mineral oil aromatic hydrocarbons. The methodological investigation results indicated that the quantification limit reached 1.0 mg/kg,and the recoveries ranged from 82.3% to 109% with RSD ranged from 7.6% to 9.7%. This research provides a practical solution for the quantitative detection of three or more rings in mineral oil aromatic hydrocarbons in printing inks. The findings offer a reliable analytical tool for the safety assessment of printing inks and food contact materials.
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