Abstract

A mathematical method is described for comparing spectrochemical results, by calculating and comparing the areas of the contour ellipses which surround the points of density scatter diagrams. By employing this comparison method, it was found that, when using lithium carbonate as a buffer for plant ash analysis, the best results are obtained when the arc is burned with a surrounding air stream, as first suggested by Stallwood, but with a constant current generator used as the energy source.

Spectrochemical Analysis by the Copper Spark Method*

Mark Fred, Norman H. Nachtrieb, and Frank S. Tomkins
J. Opt. Soc. Am. 37(4) 279-287 (1947)

A Spectrochemical Method for the Determination of Boron in Synthetic Mixtures of Soil Materials

R. Q. Parks
J. Opt. Soc. Am. 32(4) 233-237 (1942)

A Method of Quantitative Spectrochemical Analysis Based on Line Widths

Pierre Coheur
J. Opt. Soc. Am. 36(9) 498-500 (1946)

Mathematical morphology operations with a comparator array processor

Ryszard Buczynski, Tomasz Szoplik, Mohammad R. Taghizadeh, Irina P. Veretennicoff, and Hugo Thienpont
Opt. Lett. 27(20) 1818-1820 (2002)

Spectrochemical Analysis of Ceramics and Other Non-Metallic Materials*

Edwin K. Jaycox
J. Opt. Soc. Am. 37(3) 162-165 (1947)