Technikatörténeti szemle 19. (1992)

KÖNYVISMERTETÉS - Papers of the First „MINERALKONTOR” International Conference on the History of Chemistry and Chemical Industry (Veszprém, 12-16 August, 1991)

the 1940s as the advent of the Duboscq colorimeter had been almost 90 years earlier, with respect to the development of commercial chemical instrumentation." (10) The advent of the DU sounded the death-knell for visible and photographic means of molecular identification and analysis through absorption spectrophotometry. Its effect can be compared with the introduction of the camera a century earlier. When John W. Draper took the first photograph of a human face in 1841 the achievement opened up a new era of preserving the human form for posterity. Previously, only the wealthy could afford the portrait painter who would produce a magnificent likeness for the historical record. The camera brought that possibility within reach of a much wider audience and gave birth to an entire new industry. Ltterautre 1. Beckman, A. O. — Gallaway, W. S. — Kaye, W. — Ulrich, W. F.: History of Spectrophotometry at Beckman Instruments, Inc., Analytical Chemistry, 49. (1977) 280A—296A. 2. Woodward, Robert B.: Structure and the Absorption Spectra of alpha, beta-Unsaturated Ketones. Journal of the American Chemical Society, 63. (1941) 1123—1126. 3. Morgareidge, Kenneth: Influence of Solvent on the Ultraviolet Absorption Maximum of Vitamin A Industrial and Engineering Chemistry, 14 (1942) 700—702. 4. Yoe, John H.: Photometric Chemical Analysis, New York, John Wiley and Sons, Inc. 1928. 5. Harrison, George R. — Lord, Richard C. — Loofbourow, John R.: Practical Spectroscopy. New York, Prentice-Hall, Inc., 1948. p. 377. 6. Holcombe Muller, Ralph: Instrumental Methods of Chemical Analysis. Industrial and Engineering Chemistry-Analytical Edition, 13. (1941) 667—754, quote on page 702. 7. Brode, Wallace R: Chemical Spectroscopy. New York, John Wiley and Sons, Inc., 1st ed. 1939, 2nd ed. 1943. 8. Hogness, T. R — Zscheile, F. P. — Sidwell A. E. (Jr.): Photoelectric Spectrophotometry. An Apparatus for the Ultraviolet and Visible Spectral Regions: Its Construction, Calibration, and Applications to Chemical Problems. Journal of Chemical Physics, (1937) 379—415. 9. McFarlan, Ronald L. — Reddie, J. Wallace — Merrill, Edward C: A New Photoelectric Method for Measuring Vitamin A. Industrial and Engineering Chemistry-Analytical Edition, 9. (1937) 324—326, Holcombe Muller, Ralph: American Apparatus, Instruments, and Instrumentation. Industrial and Engineering Chemistry-Analytical Edition, 12. (1940) 571—630, picture on p. 597. 10. Laitinen, Herbert A. — Erwing, Galen W.: A History of Analytical Chemistry, Washington, DC, American Chemical Society, Division of Analytical Chemistry, 1977. pp. 144—145.