Abstract
This work studies the effects of solvent and of dissolved oxygen in the determination of benzo[ a]pyrene (B aP) by constant-wavelength synchronous spectrofluorimetry in smoke-flavour agents, as confirmation and quantification techniques. The wavelength of the most intense peak at the optimum excitation–emission wavelength interval (20 or 110 nm in most of nine solvents) varied by up to 5 nm, and the detection and quantification limits by a factor of up to 30. The best quantification limit was obtained with DMSO (0.09 μg l −1). The deoxygenation of the analyte solution decreased detection and quantification limits, by a variable factor (8–1.13 in the case of n-hexane and DMSO, respectively).
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