Ion Pairing HPLC Used for Ink Analysis
Researchers at Beijing Normal University and the Institute of Beijing Criminal Science and Technology (China) used ion pairing high performance liquid chromatography (HPLC) to analyze 12 black inks and six red inks from various manufacturers in a number of countries.
Researchers at Beijing Normal University and the Institute of Beijing Criminal Science and Technology (China) used ion pairing high performance liquid chromatography (HPLC) to analyze 12 black inks and six red inks from various manufacturers in a number of countries. They extracted each ink-containing paper sample for 12 h with a acetonitrile–tetrabutylammonium bromide solution and analyzed the filtered extract without further preparation. They used a C18 column to separate the ink dyes with a mobile-phase gradient of acetonitrile in aqueous tetrabutylammonium bromide and UV–vis detection at 590 nm and 520 nm for the black and red inks, respectively.
RAFA 2024: Giorgia Purcaro on Multidimensional GC for Mineral Oil Hydrocarbon Analysis
November 27th 2024Giorgia Purcaro from the University of Liège was interviewed at RAFA 2024 by LCGC International on the benefits of modern multidimensional GC methods to analyze mineral oil aromatic hydrocarbons (MOAH) and mineral oil saturated hydrocarbons (MOSH).
RAFA 2024 Highlights: Contemporary Food Contamination Analysis Using Chromatography
November 18th 2024A series of lectures focusing on emerging analytical techniques used to analyse food contamination took place on Wednesday 6 November 2024 at RAFA 2024 in Prague, Czech Republic. The session included new approaches for analysing per- and polyfluoroalkyl substances (PFAS), polychlorinated alkanes (PCAS), Mineral Oil Hydrocarbons (MOH), and short- and medium-chain chlorinated paraffins (SCCPs and MCCPs).
