Rotating-disk sorptive extraction coupled to gas chromatography mass spectrometry for the determination of phthalates in bottled water

The determination of eight phthalates in plastic bottled water, namely, dimethyl phthalate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, benzyl butyl phthalate, 2-ethylhexyl adipate, 2-ethylhexyl phthalate, and di- n -octyl phthalate, was carried out for the first time using a green ext...

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Bibliographic Details
Published inAnalytical methods Vol. 11; no. 48; pp. 6111 - 6118
Main Authors Manzo, Valentina, Becerra-Herrera, Mercedes, Arismendi, Daniel, Molina-Balmaceda, Alejandra, Caraballo, Manuel A, Richter, Pablo
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 28.12.2019
Subjects
Analytical methods
Bottled water
Butyl phthalate
Carbonation
Chemical industry
Chromatography
Detection limits
Dibutyl phthalate
Diethyl phthalate
Drinking water
Gas chromatography
Mass spectrometry
Mass spectroscopy
Phthalate esters
Phthalates
Plastics
Rotating disks
Rotation
Scientific imaging
Spectroscopy
Water analysis
Water sampling
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Summary:The determination of eight phthalates in plastic bottled water, namely, dimethyl phthalate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, benzyl butyl phthalate, 2-ethylhexyl adipate, 2-ethylhexyl phthalate, and di- n -octyl phthalate, was carried out for the first time using a green extraction/preconcentration technology by rotating disk sorptive extraction (RDSE) and gas chromatography-mass spectrometry. The detection limits and precision (% RSD) were in the ranges 0.01-0.04 μg L −1 and 1-16%, respectively, for all the analytes. Absolute recoveries were in the range of 73 to 100% with the only exception being di-propyl phthalate (DPP, 57%), which were satisfactory considering that RDSE is an equilibrium based extraction technique. The applicability of this methodology was confirmed through the analysis of two types of Chilean commercial plastic bottled waters where five of the eight studied phthalates were quantified. This method is significantly faster than its counterpart by stir bar sorptive extraction (SBSE) and requires a considerably lower volume of the sample and solvent than SBSE; therefore it is an excellent green analytical methodology. The determination of eight phthalates in plastic bottled water was carried out using rotating disk sorptive extraction and gas chromatography-mass spectrometry.
Bibliography:Electronic supplementary information (ESI) available: (1) estimated concentration of phthalates in LC-MS grade water, ultrapure water and commercial glass bottled water samples (Table A.1); (2) Doehlert design. The results obtained for phthalates (Table A.2); (3) concentration of phthalates in uncarbonated and carbonated plastic bottled water (Table A.3). See DOI
10.1039/c9ay02076d
ISSN:1759-9660
1759-9679
DOI:10.1039/c9ay02076d