Monitoring analysis of perfluoroalkyl substances and F-53B in bottled water, tea and juice samples by LC-MS/MS

Abstract

Monitoring analysis of 14 per- and polyfluoroalkyl substances (PFAS), 9-chlorohexadecafluoro-3-oxa-nonane-1-sulfonate (F-53B) and dodecafluoro-3H-4,8-dioxanonanoate (ADONA) in bottled drinking water, tea and juice samples was performed using LC coupled with tandem mass spectrometry (LC-MS/MS) and solid-phase extraction (SPE). In the electrospray negative ion mode, the limit of detection and limit of quantification (LOQ) values were 0.1 to 0.8ng/mL and 0.2 to 1.6ng/mL, respectively. The calibration curves were linear from LOQ to 50ng/mL (r2>0.999). The SPE procedure (Presep PFC-II) was utilized for sample preparation and recovery rates for three standards (35, 70 and 140ng/L) were 80.4-118.8% with relative standard deviation (RSD)≤0.6%. Using the developed method, various samples (n=54) from Japanese markets were investigated for PFAS and F-53B contamination, and values below the LOQ were observed. It is concluded that for monitoring products in the Japanese market, our method represents a significant improvement over complex techniques for the quantification of PFAS and related compounds from various foods.