Rodney K. Skogerboe

Use of electrothermal vaporization-multiple-wavelength absorption spectrometry to qualitatively screen for the presence of polycyclic aromatic hydrocarbons.

An electrothermal atomizer normally used for atomic absorption measurements has been used with a spectrometer designed to simultaneously record spectral data over a 150-nm wavelength range to characterize the vapor-phase absorption spectra of several polycyclic aromatic hydrocarbons. I t is shown that a combination of temperature and absorption wavelength discrimination can be used to qualitatively identify polycyclic aromatic hydrocarbon compounds present in mixtures. The specificity, sensitivity, convenience, and speed of the method indicate that it should offer an expedient means of screening for the presence of polycyclic aromatic hydrocarbons prior to analysis by other costly methods.

Crude oil identification with electrothermal vaporization-multiple wavelength absorption spectrometry

Abstract A spectrometric technique utilizing electrothermal vaporization (graphite furnace) and gas phase-multiple wavelength absorption with photodiode array detection is used to characterize crude oil.