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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 41, Iss. 12 — Dec. 1, 1951
  • pp: 1017–1022

A Possible Extension of the Density-Difference Method of Spectrographic Analysis

B. VERKERK  »View Author Affiliations

JOSA, Vol. 41, Issue 12, pp. 1017-1022 (1951)

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The density transformation according to Seidel, Dt=log[(d0/d)-1] results in a calibration curve that is nearly straight in the wavelength region normally used in spectrographic analysis.

The properties of the “transformed density curve” are studied in detail and it is shown that by choice of favorable conditions the remaining curvature is negligible. This offers the possibility to extend the density difference method to the (H and D) density range 0.1–2.

B. VERKERK, "A Possible Extension of the Density-Difference Method of Spectrographic Analysis," J. Opt. Soc. Am. 41, 1017-1022 (1951)

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  1. H. Kaiser, Spectrochim. Acta 2, 1 (1941).
  2. Honerjaerger-Sohm and H. Kaiser, Spectrochim. Acta 2, 396 (1944).
  3. H. Kaiser, Spectrochim. Acta 3, 159 (1948).
  4. H. K. Hughes and R. W. Murphy, J. Opt. Soc. Am. 39, 501 (1949).
  5. E. H. Cohen, "Investigations on the emulsion calibration for quantitative spectrochemistry" (Dutch), Thesis, Amsterdam, 1950.
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  8. Schmidt, Manders, and v. Wijk, with Verkerk, Compt. Rend. du 10-ième Congrès du Gams (1948).
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