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A hybrid material as a sorbent phase for the disposable pipette extraction technique enhances efficiency in the determination of phenolic endocrine-disrupting compounds.
Corazza, Gabriela; Merib, Josias; Magosso, Hérica A; Bittencourt, Otávio R; Carasek, Eduardo.
Afiliación
  • Corazza G; Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, SC, Brazil.
  • Merib J; Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, SC, Brazil.
  • Magosso HA; Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, SC, Brazil.
  • Bittencourt OR; Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, SC, Brazil.
  • Carasek E; Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, 88040-900, SC, Brazil. Electronic address: ecarasek@hotmail.com.
J Chromatogr A ; 1513: 42-50, 2017 Sep 01.
Article en En | MEDLINE | ID: mdl-28734604
In this study, the hybrid material 3-n-propyl(3-methylpyridinium) silsesquioxane chloride (Si3Py+Cl-) was synthesized and investigated as a novel sorbent phase for the disposable pipette extraction (DPX) technique coupled to high-performance liquid chromatography-florescence detection. This sorbent phase was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Aqueous samples containing the phenolic endocrine-disrupting compounds bisphenol A (BPA), 17α-ethynylestradiol (EE2), 4-tert-octylphenol (4-t-OP), 4-octylphenol (4-OP) and 4-nonylphenol (4-NP) were subjected to DPX procedures and a series of optimizations was performed to determine the ideal extraction conditions using this approach. The proposed sorbent phase exhibited higher extraction efficiency than DPX-RP (reversed phase tips containing styrene-divinylbenzene), commonly used for the determination of the phenolic endocrine- disrupting-compounds under study. Satisfactory analytical performance was achieved with linear ranges from 2 to 100µgL-1 for 4-t-OP and 1-100µgL-1 for the other analytes. Limits of detection of 0.60µgL-1 for 4-t-OP and 0.30µgL-1 for other analytes, RSDs ranging from 1 to 20% and relative recoveries of 83-116% were obtained. Based on these satisfactory results, this sorbent phase represents a valuable alternative for the extraction of compounds with polar moieties in their structure.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Piridinio / Siloxanos / Contaminantes Químicos del Agua / Fenol / Disruptores Endocrinos Tipo de estudio: Diagnostic_studies Idioma: En Revista: J Chromatogr A Año: 2017 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Piridinio / Siloxanos / Contaminantes Químicos del Agua / Fenol / Disruptores Endocrinos Tipo de estudio: Diagnostic_studies Idioma: En Revista: J Chromatogr A Año: 2017 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos