Comparison of the solid-phase extraction efficiency of a bounded and an included cyclodextrin-silica microporous composite for polycyclic aromatic hydrocarbons determination in water samples.
Solid-phase extraction is one of the most important techniques for sample purification and concentration. A wide variety of solid phases have been used for sample preparation over time. In this work, the efficiency of a new kind of solid-phase extraction adsorbent, which is a microporous material made from modified cyclodextrin bounded to a silica network, is evaluated through an analytical method which combines solid-phase extraction with high-performance liquid chromatography to determine polycyclic aromatic hydrocarbons in water samples. Several parameters that affected the analytes recovery, such as the amount of solid phase, the nature and volume of the eluent or the sample volume and concentration influence have been evaluated. The experimental results indicate that the material possesses adsorption ability to the tested polycyclic aromatic hydrocarbons. Under the optimum conditions, the quantification limits of the method were in the range of 0.09-2.4μgL(-1) and fine linear correlations between peak height and concentration were found around 1.3-70μgL(-1). The method has good repeatability and reproducibility, with coefficients of variation under 8%. Due to the concentration results, this material may represent an alternative for trace analysis of polycyclic aromatic hydrocarbons in water trough solid-phase extraction.
Departament de Química Analítica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain. Electronic address: adela.mauri@uv.es.
Adela
A
Mauri-Aucejo
Institut Ciència dels Materials, Universitat de València, P.O. Box 22085, 46071 València, Spain.
Pedro
P
Amorós
Institut Ciència dels Materials, Universitat de València, P.O. Box 22085, 46071 València, Spain.
Alaina
A
Moragues
Institut Ciència dels Materials, Universitat de València, P.O. Box 22085, 46071 València, Spain.
Carmen
C
Guillem
Departament de Química Analítica, Facultat de Química, Universitat de València, Dr Moliner 50, 46100 Burjassot, València, Spain.
Carolina
C
Belenguer-Sapiña
D000327:Adsorption; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003505:Cyclodextrins / Q000737:chemistry*; D004867:Equipment Design; D057230:Limit of Detection; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000302:isolation & purification*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification*
D003505:Cyclodextrins; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D014867:Water; D012822:Silicon Dioxide
Cyclodextrin-silica bounding; Polycyclic aromatic hydrocarbons; Preconcentration; Solid phase extraction; Water