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Titlebook: Applications of the Newer Techniques of Analysis; Ivor L. Simmons,Galen W. Ewing Book 1973 Springer Science+Business Media New York 1973 a

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61#
發(fā)表于 2025-4-1 02:57:41 | 只看該作者
Studies in Systems, Decision and Controlgy of arc spectrochemistry. Why, in the first place, is a symposium on arc emission spectroscopy necessary? Figure 1 provides some idea of the reason. Plotted in the figure are the number of publications cited in spectrochemical analysis each year for the past 52 years. The curve on the left is take
62#
發(fā)表于 2025-4-1 08:31:08 | 只看該作者
https://doi.org/10.1007/978-3-319-27568-0onsists of a dc current arc in a static-argon gas chamber. Figure 1 is a photograph of a typical spectrochemical analysis system. This unit is in operation at the University of Colorado Medical Center in Denver, Colorado, under the direction of Michael Hambidge, M.D. It employs a standard Jarrell-As
63#
發(fā)表于 2025-4-1 13:34:45 | 只看該作者
64#
發(fā)表于 2025-4-1 16:07:44 | 只看該作者
Liqiang Zhao,Kun Yang,Guogang Zhao was designed for respirable air-borne quartz. Silver membrane filters, because of their greater resistance to humidity, were being used for gravimetric determinations of inert or nuisance dusts. Further, it was determined that the x-ray diffraction pattern of the silver membrane was flat and even a
65#
發(fā)表于 2025-4-1 21:32:14 | 只看該作者
66#
發(fā)表于 2025-4-2 00:37:09 | 只看該作者
Wentao Huang,Moduo Yu,Hao Li,Nengling Tai among the naturally abundant representative and outer transition elements, possesses no isotope with a nuclear magnetic moment. Magnetic nuclei have properties that fall conveniently into two classes according to the magnitude of nuclear spin. Those with spins greater than one-half (shown hatched i
67#
發(fā)表于 2025-4-2 04:04:52 | 只看該作者
https://doi.org/10.1007/978-3-662-45676-7t have a suitable isotope. If one eliminates resonances over 100 times weaker than hydrogen, 32 elements remain. Of these, 24 have a spin greater than 1/2, and their spectra exhibit quadrupole broadening in varying degrees. Fortunately, the nuclei with broad lines also exhibit very wide chemical shi
68#
發(fā)表于 2025-4-2 08:55:58 | 只看該作者
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