Solid Surface Room Temperature Phosphorescence of Polychlorinated Dibenzofurans Enhanced by a Surface Active Agent

J. J. Santana Rodríguez Deparment of Chemistry, Faculty of Marine Sciences, University of Las Palmas de G.C, 35017, Las Palmas, Spain

J. Hernádez García Deparment of Chemistry, Faculty of Marine Sciences, University of Las Palmas de G.C, 35017, Las Palmas, Spain

Z. Sosa Ferrera Deparment of Chemistry, Faculty of Marine Sciences, University of Las Palmas de G.C, 35017, Las Palmas, Spain

A. J. Bermejo Martín Lázaro Deparment of Chemistry, Faculty of Marine Sciences, University of Las Palmas de G.C, 35017, Las Palmas, Spain

Pages 2413-2436 | Received 27 Mar 1995, Accepted 22 Jun 1995, Published online: 23 Aug 2006

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https://doi.org/10.1080/00032719508000382

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Abstract

Room temperature phosphorescence characteristics on filter paper of dibenzofuran (DF) and several polychlorinated dibenzofurans (PCDFs) in the presence of different heavy atoms in conjunction with a surface active agent, sodium lauryl sulfate (NaLS), have been studied. The use of this surfactant produces an enhancement of the phosphorescence intensity in all the cases studied, which improve the sensitivity in the determination of DF and PCDFs. The optimization of experimental conditions like type of filter paper, drying and cooling times of the filter paper after spotting the sample, irradiation time, concentration of heavy atom and concentration of surfactant has been carried out. Phosphorescence lifetimes, linear dynamic range, relative standard deviation and limit of detection of the different compounds were also determined.

Key Words:

Room Temperature Phosphorescence
Dibenzofuran
Polychlorinated Dibenzofurans
Heavy Atom
Surfactant

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