Abstract

A method for the quantitative spectrographic analysis of the materials used in oxide coated thermionic cathodes for Fe, Cu, Pb, Mg, Mn, and Al, is described. The materials consist of barium-strontium carbonate or barium-strontium-calcium carbonate. The basic raw materials consist of barium nitrate, strontium nitrate, and calcium nitrate. The method employs briquetted samples and a high voltage alternating current arc. Fifteen samples can each be analyzed for six elements in two hours with an elapsed time of eighty seconds per determination.

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  1. H. B. Vincent and R. A. Sawyer, "A new microphotometer," J. Opt. Soc. Am. 31, 639 (1941).
  2. S. L. Parsons, "Voltage regulator for a densitometer lamp," J. Opt. Soc. Am. 32, 153 (1942).
  3. H. B. Vincent and R. A. Sawyer, "Rapid processing of photographic plates for routine spectrographic analysis," Spectrochimica Acta 1, 131 (1939).
  4. R. A. Sawyer and H. B. Vincent, "Developments in the rapid spectrographic analysis of iron and steel," Proc. 5th Summer Conf. on Spect. and its Applications (1938).
  5. S. L. Parsons, "Spectrographic determination of thorium in tungsten filament wire," J. Opt. Soc. Am. 33, 659 (1943).
  6. E. A. Boettner and C. F. Tufts, "A study concerning characteristics of the high voltage a.c. arc," J. Opt. Soc. Am. 37, 192 (1947).

1947

1943

1942

1941

1939

H. B. Vincent and R. A. Sawyer, "Rapid processing of photographic plates for routine spectrographic analysis," Spectrochimica Acta 1, 131 (1939).

Boettner, E. A.

Parsons, S. L.

Sawyer, R. A.

H. B. Vincent and R. A. Sawyer, "A new microphotometer," J. Opt. Soc. Am. 31, 639 (1941).

H. B. Vincent and R. A. Sawyer, "Rapid processing of photographic plates for routine spectrographic analysis," Spectrochimica Acta 1, 131 (1939).

R. A. Sawyer and H. B. Vincent, "Developments in the rapid spectrographic analysis of iron and steel," Proc. 5th Summer Conf. on Spect. and its Applications (1938).

Tufts, C. F.

Vincent, H. B.

H. B. Vincent and R. A. Sawyer, "A new microphotometer," J. Opt. Soc. Am. 31, 639 (1941).

H. B. Vincent and R. A. Sawyer, "Rapid processing of photographic plates for routine spectrographic analysis," Spectrochimica Acta 1, 131 (1939).

R. A. Sawyer and H. B. Vincent, "Developments in the rapid spectrographic analysis of iron and steel," Proc. 5th Summer Conf. on Spect. and its Applications (1938).

J. Opt. Soc. Am.

Spectrochimica Acta

H. B. Vincent and R. A. Sawyer, "Rapid processing of photographic plates for routine spectrographic analysis," Spectrochimica Acta 1, 131 (1939).

Other

R. A. Sawyer and H. B. Vincent, "Developments in the rapid spectrographic analysis of iron and steel," Proc. 5th Summer Conf. on Spect. and its Applications (1938).

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