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

Tran Thi Lieu Kieu Thi Lan Phuong Do Thi Thu Hang Hoang Quoc Anh Nguyen Thị Quynh Hoa Doan Duy Khanh Le Huu Tuyen Nguyen Thi Anh Huong Dang Thu Hien
Received: 10 Aug 2022
Revised: 16 Sep 2022
Accepted: 16 Sep 2022
Published: 10 Oct 2022

Article Details

How to Cite
Tran Thi Lieu, Kieu Thi Lan Phuong, Do Thi Thu Hang, Hoang Quoc Anh, Nguyen Thị Quynh Hoa, Doan Duy Khanh, Le Huu Tuyen, Nguyen Thi Anh Huong, Dang Thu Hien. "Determination of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in paper-based food packaging samples". Vietnam Journal of Food Control. vol. 5, no. 4 (en), pp. 589-597, 2022
PP
589-597
Counter
596

Main Article Content

Abstract

In this study, a method for simultaneous determination of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) by liquid chromatography-tandem mass spectrometry (LC-MS/MS) in paper-based food packaging was validated. 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 0.2 μm filters before LC-MS/MS analysis. The method detection limit and method quantification limit of both PFOA and PFOS were 0.1 and 0.3 ng/g, respectively. Correlation coefficients > 0.99 were obtained over concentration ranges from 0.3 to 10 ng/mL. The method recovery ranged from 100 - 106% with good repeatability (RSD < 5%). The method was applied to analyze 23 paper samples, however, PFOA and PFOS were not detected in any of these samples.

Keywords:

PFOA, PFOS, paper-based food packaging, LC-MS/MS.

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