Determination of phthalic acid esters in water samples using core-shell poly(dopamine) magnetic nanoparticles and gas chromatography tandem mass spectrometry
| Autor: | Bárbara Socas-Rodríguez, Javier Hernández-Borges, Javier González-Sálamo, Miguel Ángel Rodríguez-Delgado |
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| Rok vydání: | 2017 |
| Předmět: |
Indoles
Dibutyl phthalate Polymers Phthalic Acids 02 engineering and technology Diethyl phthalate Diisodecyl phthalate 01 natural sciences Biochemistry Gas Chromatography-Mass Spectrometry Analytical Chemistry chemistry.chemical_compound Tap water Limit of Detection Adipate Magnetite Nanoparticles Diisononyl phthalate Chromatography 010401 analytical chemistry Organic Chemistry Phthalate Reproducibility of Results Water Esters General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences Phthalic acid chemistry 0210 nano-technology Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Journal of chromatography. A. 1530 |
| ISSN: | 1873-3778 |
| Popis: | In this work, the first application of core-shell poly(dopamine) magnetic nanoparticles as sorbent for the extraction of a group of eleven phthalic acid esters of interest (i.e. diethyl phthalate (DEP), dipropyl phthalate (DPP), dibutyl phthalate (DBP), bis-isopentyl phthalate (DIPP), bis-n-pentyl phthalate (DNPP), benzylbutyl phthalate (BBP), dicyclohexyl phthalate (DCHP), di-(2-ethylhexyl) phthalate (DEHP), di-n-octyl phthalate (DNOP), diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP)) and one adipate (bis (2-ethylhexyl) adipate, DEHA) from different water samples (Milli-Q, mineral, tap, pond and waste water) is proposed. Analysis were carried out by gas chromatography triple quadrupole tandem mass spectrometry. Parameters that affect the extraction performance were optimized following a step by step approach, being the optimum conditions the extraction of water at pH 6, with 60mg of sorbent and the elution with 6mL of dichloromethane. The methodology was validated for the five selected water samples using DBP-d4 as internal standard. Determination coefficients of matrix-matched calibration curves were above 0.9904 in all cases while relative recovery values ranged between 71 and 120%, with relative standard deviation values below 19%. The limits of quantification of the method ranged between 9 and 20ng/L. Matrix effects were found for most analytes and water samples. Real water samples were also analyzed, finding DEP and DBP at concentrations below 4.20 and 1.23μg/L, respectively, in mineral, tap and waste water. DCHP, DEHP and BBP were also found in some of the samples at concentrations below the LOQs of the method. |
| Databáze: | OpenAIRE |
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