Abstract
A quantificational method for 7 phthalate esters in non-alcoholic beverages was developed. Dimethyl phthalate, di-ethyl phthalate, di-propyl phthalate (DPP), di-butyl phthalate (DBP), benzyl butyl phthalate, di-(2-ethylhexyl) phthalate (DEHP), and di-octyl phthalate (DOP) were extracted from non-alcoholic beverages with the optimized solid-phase extraction method, and quantification was achieved by gas chromatography–mass spectrometry with isotope internal standard of d4-di-(2-ethylhexyl) phthalate (DEHP-d4). The inter-day method repeatability (RSD) was 8–13 %, whereas the intra-day method repeatability (RSD) was 9–15 %. The mean spiking recoveries were 84–105 %. A wide variety of phthalate concentrations was observed in 48 non-alcoholic beverages. DEHP was the most abundant phthalate compound followed by DBP, DPP, and DOP. DEHP was found in sport drinks (0.015–0.098 mg L−1), tea (0.016–0.123 mg L−1), coffee (0.028–0.159 mg L−1), and fruit juices (0.022–0.126 mg L−1).
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Acknowledgments
This work was supported by the National High Technology Research and Development Program of China (863 Program, No. 2012AA101603); we are thankful to China National Center For Food Safety Risk Assessment for the technical advice.
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Wu, PG., Pan, XD., Ma, BJ. et al. Determination of phthalate esters in non-alcoholic beverages by GC–MS and optimization of the extraction conditions. Eur Food Res Technol 238, 607–612 (2014). https://doi.org/10.1007/s00217-013-2139-y
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DOI: https://doi.org/10.1007/s00217-013-2139-y