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http://dx.doi.org/10.13103/JFHS.2021.36.4.310

Levels of Perfluorinated Compounds in Liquid Milk Products in Korea  

Park, Na-youn (Department of Health Environment Safety, Eulji University)
Kho, Younglim (Department of Health Environment Safety, Eulji University)
Kim, Junghoan (Food Technology & Service, Eulji University)
Publication Information
Journal of Food Hygiene and Safety / v.36, no.4, 2021 , pp. 310-315 More about this Journal
Abstract
This study was carried out to monitor the level of 17 perfluorinated compounds (PFCs) present in liquid milk products sold on the Korean market. The liquid milk samples were extracted via liquid-liquid extraction and analyzed by LC-MS/MS. Excellent linearity over the calibration range (r2>0.99), and the limit of quantification of perfluorooctane sulfonate (PFOS) was 0.021 ng/g, and perfluorotetradecanoic acid (PFOA) was 0.057 ng/g. The accuracy was in the range of 72.5-115.3%, and the precision was under 20%. The preprocessing method for this experiment is considered appropriate for analysis of milk samples. The proposed analytical method was applied for the determination of PFCs in 98 liquid milk product samples, and the average content of total PFCs was 0.6576 ng/mL. PFOA and PFOS were detected in most samples, and their levels were less than 0.1 ng/mL, which was lower than those in other studies.
Keywords
Perfluorinated compounds; Milk; PFOA; PFOS; LC-MS/MS;
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