Evaluation of phenylene-bridged periodic mesoporous organosilica as a stationary phase for solid phase extraction

A Carpio; D Esquivel; L Arce; F J Romero-Salguero; P Van Der Voort; C Jiménez-Sanchidrián; M Válcarcel

doi:10.1016/j.chroma.2014.10.048

Evaluation of phenylene-bridged periodic mesoporous organosilica as a stationary phase for solid phase extraction

J Chromatogr A. 2014 Nov 28:1370:25-32. doi: 10.1016/j.chroma.2014.10.048. Epub 2014 Oct 24.

Authors

A Carpio¹, D Esquivel², L Arce¹, F J Romero-Salguero³, P Van Der Voort², C Jiménez-Sanchidrián³, M Válcarcel⁴

Affiliations

¹ Department of Analytical Chemistry, University of Cordoba, Annex C3 Building, Campus of Rabanales, Cordoba, Spain.
² Department of Inorganic and Physical Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC), Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium.
³ Department of Organic Chemistry, Nanochemistry and Fine Chemistry Research Institute (IUIQFN), Campus of Rabanales, University of Cordoba, Campus de Excelencia Internacional Agroalimentario (CeiA3), Cordoba, Spain.
⁴ Department of Analytical Chemistry, University of Cordoba, Annex C3 Building, Campus of Rabanales, Cordoba, Spain. Electronic address: qa1meobj@uco.es.

PMID: 25454127
DOI: 10.1016/j.chroma.2014.10.048

Abstract

A periodic mesoporous organosilica, in particular, a phenylene-bridged material (Ph-PMO), was evaluated for the first time as a sorbent for retaining and eluting fenuron, simazine, atrazine, carbaryl and terbutryn in grape must by solid phase extraction (SPE) prior to their determination with capillary electrophoresis coupled with ultraviolet detection (CE-UV). The analytes were used as model compounds to demonstrate the potential of Ph-PMO for increasing the sensitivity of CE. Under optimal conditions, the limits of detection for the analytes ranged from 0.6 to 4 μg/L, and their limits of quantitation from 2 to 10 μg/L. These values were comparable and, in some cases, even better than those obtained with C18 and HLB materials. Ph-PMO was characterized physicochemically by X-ray diffraction analysis, N2 adsorption-desorption measurements and laser diffraction particle sizing. The sorbent afforded the extraction of atrazine, carbaryl and terbutryn from grape must with mean recoveries ranging from 86 to 105%. Therefore, periodic mesoporous organosilicas possess a high potential as SPE materials.

Keywords: Capillary electrophoresis; Periodic mesoporous organosilicas; Pesticides; Solid phase extraction.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Electrophoresis, Capillary / methods
Hydrogen-Ion Concentration
Particle Size
Porosity
Silicon Dioxide / chemistry*
Solid Phase Extraction / methods*
Surface Properties
X-Ray Diffraction

Substances

Silicon Dioxide