Musculoskeletal
发表于 2025-3-25 07:24:43
Filters, Prisms, Gratings, and Lenses, together with other optical devices to direct and focus the radiant energy. Spectral isolation is achieved by using a filter, a prism, or a grating, depending on the degree of wavelength resolution required. The collection and focusing of the light from the source are usually accomplished by using
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发表于 2025-3-25 10:04:19
Spectrometers,tion device—filter, prism, or grating; a slit to permit the radiation to strike the monochromator as a narrow beam; a device to allow observation of the spectrum; and the necessary optics, lenses, mirrors, etc. to collect and focus the incident light beam. These devices, assembled into one instrumen
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发表于 2025-3-25 14:43:21
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发表于 2025-3-25 18:02:56
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发表于 2025-3-25 21:38:15
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发表于 2025-3-26 02:51:45
Flame Emission Spectroscopy,e to Chapter 1 will provide some information concerning the historical development of this method of spectral excitation and its early use to detect the presence of metal elements in samples aspirated into a flame. Modern analytical flame emission spectroscopy can be considered to date from the work
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发表于 2025-3-26 06:40:31
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通知
发表于 2025-3-26 11:27:06
Atomic Fluorescence Spectroscopy,in 1964, when Winefordner and Vickers. published a paper describing the principles involved in the method, and Winefordner and Staab. published another describing use of atomic fluorescence for the determination of small amounts of zinc, cadmium, and mercury.
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发表于 2025-3-26 15:55:46
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发表于 2025-3-26 20:47:17
Analytical Atomic Absorption Spectroscopy,aper suggesting similar procedures. The work of Walsh, however, was much more detailed, since he examined the theory of the method, the basic principles involved, the instrumentation requirements, and its advantages over flame emission.