Solubility and partitioning studies with polycyclic aromatic hydrocarbons using an optimized SPME procedure |
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Authors: | A Paschke Peter Popp and Gerrit Schüürmann |
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Institution: | (1) Department of Chemical Ecotoxicology, UFZ-Centre for Environmental Research, Permoserstrasse 15, D-04318 Leipzig, Germany, DE;(2) Department of Analytical Chemistry, UFZ-Centre for Environmental Research, Permoserstrasse 15, D-04318 Leipzig, Germany, DE |
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Abstract: | In order to determine the water solubilitiy (S
W) and octanol/water partition coefficient (K
OW) of polycyclic aromatic hydrocarbons, we have optimized the direct solid-phase microextraction (SPME) of selected compounds
(fluoranthene (FLU), phenanthrene (PHE), pyrene (PYR), benza]anthracene (BaA), benza]pyrene (BaP), and coronene) from the matrices water and octanol-saturated water. By the use of a 100 μm polydimethylsiloxane fibre and
magnetic stirring of the sample with glass-coated mini-impellers in combination with gas chromatography we obtained limits
of determination (GC-MS) comparable to standard HPLC procedures. Only coronene could not be quantified. The determined S
W of FLU agree with reference data; for Ba]P we have obtained a 2 to 3 times higher value than described in recent literature. The obtained K
OW values are close to reference data for both single components. For a mixture of FLU, PHE, PYR, and Ba]A the measured K
OW values are 0.2–0.3 log units below tabulated values for the single components.
Received: 22 July 1998 / Revised: 28 October 1998 / Accepted: 1 November 1998 |
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