RT info:eu-repo/semantics/article
T1 Determination of phthalic acid esters in water samples using core-shell poly(dopamine) magnetic nanoparticles and gas chromatography tandem mass spectrometry
A1 González Sálamo, Javier
A1 Socas Rodríguez, Bárbara
A1 Hernández Borges, Javier
A1 Rodríguez Delgado, Miguel Ángel
K1 Phthalic acid esters
K1 Water
K1 Magnetic-nanoparticles
K1 Poly(dopamine)
K1 Gas chromatography
K1 Tandem mass spectrometry
AB 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 60 mg of sorbent and the elution with 6 mL 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 20 ng/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 1.23 μg/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.
SN 0021-9673
YR 2017
FD 2017
LK http://riull.ull.es/xmlui/handle/915/36094
UL http://riull.ull.es/xmlui/handle/915/36094
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 30-may-2024