Accession Number : ADD009021

Title :   Application of Inductively Coupled Plasma Emission Spectrometry to the Elemental Analysis of Organic Compounds and to the Determination of the Empirical Formulas for These and Other Compounds.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Denton,Medona B ; Windsor,David L

Report Date : 06 Oct 1981

Pagination or Media Count : 13

Abstract : An inductively coupled plasma torch (ICP) provides an efficient means for thermally degrading many organic molecules and exciting the resulting atomic species into optical emission. Spectrometric analysis produces reliable data for qualitative and quantitative simultaneous, multi-element analyses. To determine the empirical formula of a molecular compound, a gas chronometer is used to separate a mixture and atomic emission monitored continuously by a multi-channel spectrometer over the period of time required for the rise and fall of the elution. The plural channels provide parallel outputs defining intensity relationships or ratios of the excited elements. Instantaneous sampling repetitively made during the elution period provides a large number of discrete ratios that are averaged to provide the desired empirical formula. Molecular formulas then are derivable. (Author)

Descriptors :   *Patents, *Emission spectroscopy, *Induction systems, *Coupling(Interaction), *Plasma devices, Chemical composition, Quantitative analysis, Excitation, Organic compounds, Inventions, Torches, Emission spectra, Degradation, Formulations(Chemistry), Elution, Ratios, Molecular structure, Optical properties, Reliability

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE