Edith Kroupa

Margaret Reed Lewis
Edith Kroupa, 1934
Born	1910
Died	1991
Nationality	Austrian
Fields	Chemistry
Institutions	Monsanto Company
Alma mater	University of Vienna
Spouse	Hugo Karl

Edith Kroupa (1910–1991) was a research chemist who utilized microchemical analysis in the laboratory of Professor A. Franke at the University of Vienna. In 1930, Kroupa and Friedrich Hecht analyzed a sample of radioactive rock from the Huron Claim, Manitoba near Winnipeg, Canada.^[1][2][3] The team determined the sample to be over 1,725,000,000 years old.^[4][5][6] Also in 1930, Kroupa and her colleague Friedrich Hecht had discovered triple-weight hydrogen.

Monsanto

Kroupa emigrated to the United States in the 1950s. According to US Customs records, on 3 June 1953, Editha Karl-Kroupa, age 43 and Hugo Karl, age 43, arrived at New York City, New York, and listed a local address as the Hotel Almac on Broadway and 71st Street in New York City. The couple embarked from Bremerhaven, Germany on 26 May 1953 aboard the USNS General Alexander M. Patch (T-AP-122) and traveled in Cabin Class. They arrived in New York on 3 June 1953 and presented Austrian passports to US Customs officials. The couple traveled with 6 pieces of baggage.^[7]

Kroupa worked as a chemist in the Inorganic Chemicals Research Division for the Monsanto Company, in Dayton, Ohio, where her research focused on phosphates.^{[8][9][10][11]}

Triple-weight hydrogen

• Giauque, W. F., & Johnston, H. L. (1928). Symmetrical and antisymmetrical hydrogen and the third law of thermodynamics. Thermal equilibrium and the triple point pressure. Journal of the American Chemical Society, 50(12), 3221-3228.
• Urey, H. C., Brickwedde, F. G., & Murphy, G. M. (1932). A hydrogen isotope of mass 2. Physical Review, 39(1), 164.
• Urey, H. C., Brickwedde, F. G., & Murphy, G. M. (1932). A hydrogen isotope of mass 2 and its concentration. Physical Review, 40(1), 1.
• Urey, H. C. (1933). The separation and properties of the isotopes of hydrogen. Science, 78(2034), 566-571.
• Davis, W. (1934). Hydrogen's Heavy Twin Has Already Had Romantic Life. The Science News-Letter, 324-325.
• Science Service Staff. (1934). Science Strides Forward. The Science News-Letter, 388-400.
• Sueltz, B. A. (1934). The Diffraction of Light, X-Rays and Material Particles, by Charles F. Meyer, Associate Professor of Physics, University of Michigan.
• Lawrence, E. O. (1939). Atoms, new and old. In Science in Progress (Vol. 1, p. 18). Yale University Press New Haven.

Publications

• Hecht, F., & Kroupa, E. (1935). Eine Methode zur Analyse sehr kleiner Monazitmengen. Zeitschrift für analytische Chemie, 102(3-4), 81-99.
• Hecht, F., & Kroupa, E. (1936). Die Bedeutung der quantitativen Mikroanalyse radioaktiver Mineralien für die geologische Zeitmessung. Fresenius' Journal of Analytical Chemistry, 106(3), 82-103.
• Kroupa, E. (1938). Mikrogravimetrische Trennung von Nickel und Uran. Microchimica Acta, 3(4), 306-312.
• Kroupa, E., & Hecht, F. (1938). Die Bestimmung von Blei, Thorium und Uran in Allaniten zum Zweck geologischer Zeitmessung. Zeitschrift für anorganische und allgemeine Chemie, 236(1), 181-199.
• Kroupa, E. (1939). Geologische Zeitmessung durch Monazitanalyse. Mikrochemie vereinigt mit Mikrochimica acta, 27(3), 165-175.
• Kroupa, E. (1939). Mikrogravimetrische Trennung von Zink und Uran. Mikrochemie vereinigt mit Mikrochimica acta, 27(1-2), 1-7.
• Cimerman, C., Wenger, P., Kroupa, E., Rây, P. R., & Sarkar, T. C. (1941). Mikroanalyse von Zink. Fresenius' Journal of Analytical Chemistry, 122(5), 216-224.
• Hecht, F., Kroupa, E., & Koss-Rosenqvist, I. T. (1941). Beiträge zur Mikro-Mineralanalyse. Mikrochemie vereinigt mit Mikrochimica acta, 29(1-2), 94-99.
• Fresenius, R., & Kroupa, E. (1941). Über die Bestimmung von Kieselsäure und Fluor in Mineralwasser. Fresenius' Journal of Analytical Chemistry, 121(3), 138-139.
• Kroupa, E. (1944). Mikrogravimetrische Trennung von Vanadin und Uran mit nachfolgender Bestimmung des Vanadins als Silberorthovanadat. Mikrochemie vereinigt mit Mikrochimica acta, 32(3-4), 245-251.
• Kroupa, E. (1947). Äußerst empfindliche Mikro-Krystallisationsreaktionen für freies und gebundenes Wismut und Antimon. Fresenius' Journal of Analytical Chemistry, 128(1), 88-89.

References

1. Hecht, Friedrich, & Kroupa, Edith. (1935). Eine Methode zur Analyse sehr kleiner Monazitmengen. Zeitschrift für analytische Chemie. 102(3-4): 81-99.
2. • Hecht, F., & Kroupa, E. (1936). Die Bedeutung der quantitativen Mikroanalyse radioaktiver Mineralien für die geologische Zeitmessung. Fresenius' Journal of Analytical Chemistry. 106(3): 82-103.
3. Kroupa, E. (1938). Mikrogravimetrische Trennung von Nickel und Uran. Microchimica Acta. 3(4): 306-312.
4. Lane, Alfred Church & Marble, John Putnam. (3 May 1930). Committee on the Measurement of Geologic Time by Atomic Disintegration. National Research Council. National Academies. Washington, D.C.
5. Muench, O.B. (November 1938). “Glorieta” Monazite. J. Am. Chem. Society. 60(11): 2661–2662.
6. Editor. (1934). Fraulein Edith Kroupa. Personalities in Science. Scientific American. 151: 227.
7. New York, New York Passenger and Crew Lists, 1909, 1925-1957. Database. FamilySearch. Editha Karl-Kroupa, 1953. Immigration. New York City, New York. United States. NARA microfilm publication T715. Washington, D.C.: National Archives and Records Administration.
8. Karl-Kroupa, E. (1956). Use of paper chromatography for differential analysis of phosphate mixtures. Analytical Chemistry. 28(7): 1091-1097.
9. Van Wazer, J. T., & Kroupa, E. K. (1956). Existence of ring phosphates higher than the tetrametaphosphate. Journal of the American Chemical Society. 78(8): 1772
10. Langguth, R. P., Osterheld, R. K., & Karl-Kroupa, E. (1956). Verification by Chromatography of the Thermal Formation of Barium and Lead Tetrapolyphosphates. The Journal of Physical Chemistry. 60(9): 1335-1336.
11. Karl-Kroupa, E., Callis, C. F., & Seifter, E. (1957). Stability of condensed phosphates in very dilute solutions. Industrial & Engineering Chemistry. 49(12): 2061-2062