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Application of Variable-angle Synchronous Phosphorimetry in a Microemulsion Medium for the Simultaneous Determination of Three Polyaromatic Hydrocarbons by Antonio Segura Carretero; Carmen Cruces Blanco; Alberto Fernández Gutiérrez is a Chemistry article available to read on EtoBox.

What is Application of Variable-angle Synchronous Phosphorimetry in a Microemulsion Medium for the Simultaneous Determination of Three Polyaromatic Hydrocarbons about?

The applicability of variable-angle synchronous scanning (VASS) phosphorimetry at room temperature has been demonstrated, for the first time, for the simultaneous determination of the polycyclic aromatic hydrocarbons phenanthrene, fluoranthene and benz[a]anthracene. This technique permits linear or non-linear paths to be scanned at preselected angles through the excitation-emission phosphorescence matrix in order to obtain the highest signal values and interference-free bands. The phosphorescence emissions of the three compounds have been obtained using microemulsion aqueous solutions in an apolar solvent. In order to obtain the optimum spectrophosphorimetric responses, a statistical model of central composite design type was applied. The increased selectivity afforded by the VASS technique has permitted the simultaneous determination of the three phosphorescent compounds with closely overlapping profiles added to coffee samples giving mean recoveries of 94% with a relative standard deviation of 1.5%.

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Author

Antonio Segura Carretero; Carmen Cruces Blanco; Alberto Fernández Gutiérrez

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0003-2670)

Published

1996

Language

EN

Field

Chemistry (Physical Sciences)