Abstract
The analytical merits of laser-induced phosphorescence spectrometry for the multicomponent analysis of halogenated aromatic hydrocarbon derivatives have been assessed for a prototype system consisting of chloronaphthalenes and bromonaphthalenes. By preparation of samples in low-temperature, vapor-deposited parent molecule matrices and use of laser excitation, the high resolution, high selectivity, and low detection limits that characterize laser-induced fluorescence spectrometry have been extended to analytical phosphorimetry. A detection limit of ca. 0.8 pg for 1,4-dichloronaphthalene is demonstrated, and high-resolution phosphorescence spectra with monochromator-limited bandwidths of ca. 10 cm{sup {minus}1} are presented, along with examples of analytical selectivity in the spectral and time domains.
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