Determination of Phthalate Esters in Liquor by High Resolution Mass Spectrometry

Abstract

Phthalate esters are environmental hormones present in food due to their migration from packaging materials and other polymers. Gas chromatography and liquid chromatography coupled with mass spectrometry are the most widely used techniques for trace phthalate ester determination. However, a major problem in the analysis is contamination during the sample pretreatment, resulting in false-positive results or over-estimated concentrations. In this study, a simple, rapid, and sensitive method for the determination of seventeen phthalate esters in liquor using high resolution mass spectrometry was developed. Samples were directly analyzed without pretreatment, which reduced contamination and improved the accuracy of the results. In addition, the total time required for the analysis of one sample was only 15 minutes. The method showed good linearity (R 2 > 0.995) in the ranges of 1 to 100 µg/L and 100 to 500 µg/L. The limits of detection and quantification were between 0.1 and 1.0 µg/L and 0.4 and 2.0 µg/L, respectively. The precision was evaluated by intra-day and inter-day measurements and expressed as the relative standard deviation (RSD). The values were less than 4.32% and 7.43%, respectively. The recovery values of phthalate esters from liquor fortified at 10, 50, 100, and 200 µg/L were determined to be 88.7% to 119.2%, with relative standard deviations of 0.3% to 9.6% (n ¼ 6). The method was suitable for the rapid screening and confirmation of phthalate esters in liquor.

Determination of Phthalate Esters in Textiles by Solid Phase Extraction and Gas Chromatography–Mass Spectrometry

“…Several methods for the determination of phthalate esters have been reported (Penalver et al 1999;Polo et al 2005;Niu et al 2006;Carrillo et al 2007;Wang et al 2007;Chen et al 2009;Lee et al 2011;Chen and Zhang 2013;Wang et al 2013;Xu et al 2014;Chen et al 2015). To the best knowledge of the authors, these reports focused on plasticizers in food, drugs, water, and packing materials, which overlooked the potential hazardous effects of products with indirect contact to skin.…”

Determination of triazine pesticides in honey by ultra high performance liquid chromatography-high resolution isotope dilution mass spectrometry combined with dispersive micro-solid phase extraction

“…Full scan, targeted single ion monitoring (tSIM) and targeted MS/MS (tMS/MS) modes are three kinds of commonly used quantitative models for Q-Exactive in our previous studies. [31][32][33] Full scan mode is a full scan of all ions in the specied mass range. However, the precursor in the inclusion list (with retention times) can be selected in the quadrupole with a particular isolation width by tSIM mode.…”