Fast sequential injection determination of benzo[A]pyrene using variable angle fluorescence with on-line solid-phase extraction

The Analyst
J A ErustesV Cerdà

Abstract

A methodology for the analysis of drinking water for one of the most potent carcinogenic agents known; benzo[a]pyrene (BaP), in the presence of other interfering PAHs is presented. The methodology described is based on the sequential injection analysis of the sample on to a microcolumn (containing 5 mg of C18) where extraction and preconcentration of BaP takes place, followed by elution of BaP with 1 ml of 1,4-dioxane and subsequent detection by using variable angle fluorescence. The advantages of the method include the small amount of stationary phase employed together with the possibility of re-using the phase in order to carry out a large number of injections without the need for column re-packing. Also noteworthy is the small volume of 1,4-dioxane used to elute the BaP retained on the column and the small sample volumes required (9-10 ml) for achieving detection limits at the ng l-1 level. Thus, a methodology for BaP determination is obtained which complies with the requirements of the 98/83/EC Directive which fixes a maximum admissible concentration for this pollutant in waters for public consumption of 10 ng l-1. The variable angle spectra obtained are further processed by means of the multiple linear regression technique...Continue Reading

Citations

Jul 21, 2009·Analytica Chimica Acta·Raquel B R Mesquita, António O S S Rangel
Jan 9, 2007·Chemosphere·A Valero-NavarroA Fernández-Gutiérrez
Mar 3, 2021·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·Yejin LiGuomin Cao

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