Emission spectrometry

Abstract

HISTORY OF THIS REVIEW dates to the first fundamental review issue in 1949. Five consecutive reviews were written by Meggers (S7A) followed by three reviews by Scribner {66A), and four reviews during the past eight years by Scribner and Margoshes {36A, 67A). A change in reviewer for this 13th installment is not intended to discontinue the tradition established in previous years.The initial section presents a general summary of new books, review articles, and spectral atlases. New fundamental atomic spectral data are presented in the second section. A section on developments in spectroscopic optics and systems is included with discussion of new instrumentation, techniques, and stdndards. A portion of the review

Analytical applications of supersonic jet spectroscopy

“…Fluorescent analysis of organic compounds provides a selective and sensitive analytical method (1)(2)(3). Traditional fluorescence excitation spectra and emission spectra of large organic molecules in solution at room temperature are extremely broad (4).…”

“…The utility of the Shpol'skii effect as an analytical technique has during the last decade been proved by the efficiency of the method for the qualitative analysis of certain chemical compounds at trace levels of concentration (1)(2)(3)(4)(5)7). The type of substances studied with this low-temperature fluorescence technique has mostly been pure hydrocarbons due to the fact that the well-resolved spectra derived from polyaromatic hydrocarbons (PAHs) in n-alkane solutions usually become drastically less well resolved when more polar atoms are introduced in the fluorescing molecule.…”

Matrix isolation Fourier transform infrared spectrometry of polycyclic aromatic hydrocarbons

“…In the technique of matrix isolation (hereafter denoted "MI"), sample species, in the gas phase, are mixed with a large excess of inert diluent gas (the matrix); the gaseous mixture is then deposited onto an optical surface for spectroscopic examination at low temperature. Since the initial description of the technique by Whittle, Dows, and Pimentel (1) in 1954, MI has been widely used, particularly for spectroscopic characterization of transient species; infrared (IR) absorption spectroscopy has often been employed in such studies (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). However, MI-IR spectroscopy has received very little consideration as a technique for the qualitative and quantitative (15) analysis of stable species, though Rochkind (16,17) has demonstrated that a variant of the conventional MI procedure can be successfully employed for the quantitative IR analysis of specific compounds in mixtures of gases.…”