Detection and quantification of PAH in drinking water by front-face fluorimetry on a solid sorbent and PLS analysis
Manuel Algarra1, Victoria Jiménez, Philippe Fornier de Violet
1Department of Analytical Chemistry, University of Málaga, Campus de Teatinos s/n, 29071 Málaga, Spain.
Abstract:
The direct determination in drinking water of perylene, chrysene, pyrene, benzo[a]pyrene, and benzo[k]fluoranthene, by front-face synchronous fluorimetry on a commercial SPE disk, has been evaluated. Sorbent treatment, influence of humic substances, and pH effect are discussed. In pure water the detection limits were estimated to be in the range 0.03-0.01 microg L(-1). A working pH in the range 10-11 was found to minimize the fluorescence quenching effect of humic substances. The proposed method combined with a partial-least-square (PLS) treatment was tested for quantitative analysis of mixtures of four PAH in a spiked drinking water.
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