Abstract

The purpose of this investigation was to evaluate the application of a spark-source mass spectrograph equipped with a spinning-electrode system for the study of various high molecular-weight materials derived from coal. Eight structural types having molecular weights from 178 to 252 corresponding to those substances previously seen in an electron-impact mass spectrum of the coal-tar pitch were affirmed by this technique. Easily interpreted mass spectra of phenanthrene, anthracene, and chrysene were obtained by the spinning-electrode system. Mass spectra obtained from synthetic mixtures of anthracene and chrysene demonstrated that the technique is applicable for semiquanitative analysis.

Shifts and Asymmetries in Condensed Spark Spectra of Electroplated Electrodes

Leon Blitzer
J. Opt. Soc. Am. 45(7) 564-567 (1955)

Spark Spectra of Elements 43 and 61*

D. L. Timma
J. Opt. Soc. Am. 39(11) 898-902 (1949)

Electrode Phenomena in a High Current 20-Nanosecond Spark

Heinz Fischer and C. C. Gallagher
Appl. Opt. 6(12) 2176-2178 (1967)

Wavelength Shift of Spectrum Lines in Spark Spectra

A. Bardócz, U. M. Vanyek, and T. Voros
J. Opt. Soc. Am. 51(3) 283-288 (1961)

Subpicogram laser-induced fluorescence detection of aromatic hydrocarbons in vapor-deposited aromatic crystals

Charles F. Pace and Jon R. Maple
J. Opt. Soc. Am. B 2(9) 1582-1588 (1985)