tailieunhanh - Determination of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in paper-based food packaging samples

The paper samples were extracted with ethanol/water (1 : 1, v/v) mixture at 70°C for 2 h by using an incubator shaker. The extracts were passed through μm filters before LC-MS/MS analysis. The method detection limit and method quantification limit of both PFOA and PFOS were and ng/g, respectively. |