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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.〔 *Hecht, Friedrich, & Kroupa, Edith. (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.〕 The team determined the sample to be over 1,725,000,000 years old.〔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.〕〔Muench, O.B. (November 1938). “Glorieta” Monazite. J. Am. Chem. Society. 60(11): 2661–2662.〕〔Editor. (1934). Fraulein Edith Kroupa. Personalities in Science. Scientific American. 151: 227.〕 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.〔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.〕 Kroupa worked as a chemist in the Inorganic Chemicals Research Division for the Monsanto Company, in Dayton, Ohio, where her research focused on phosphates.〔Karl-Kroupa, E. (1956). Use of paper chromatography for differential analysis of phosphate mixtures. Analytical Chemistry. 28(7): 1091-1097.〕〔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〕〔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.〕〔Karl-Kroupa, E., Callis, C. F., & Seifter, E. (1957). Stability of condensed phosphates in very dilute solutions. Industrial & Engineering Chemistry. 49(12): 2061-2062〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Edith Kroupa」の詳細全文を読む スポンサード リンク
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