共查询到10条相似文献,搜索用时 78 毫秒
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《Spectrochimica Acta Part B: Atomic Spectroscopy》2002,57(4):659-688
Tungsten devices have been employed in analytical atomic spectrometry for approximately 30 years. Most of these atomizers can be electrically heated up to 3000 °C at very high heating rates, with a simple power supply. Usually, a tungsten device is employed in one of two modes: as an electrothermal atomizer with which the sample vapor is probed directly, or as an electrothermal vaporizer, which produces a sample aerosol that is then carried to a separate atomizer for analysis. Tungsten devices may take various physical shapes: tubes, cups, boats, ribbons, wires, filaments, coils and loops. Most of these orientations have been applied to many analytical techniques, such as atomic absorption spectrometry, atomic emission spectrometry, atomic fluorescence spectrometry, laser excited atomic fluorescence spectrometry, metastable transfer emission spectroscopy, inductively coupled plasma optical emission spectrometry, inductively coupled plasma mass spectrometry and microwave plasma atomic spectrometry. The analytical figures of merit and the practical applications reported for these techniques are reviewed. Atomization mechanisms reported for tungsten atomizers are also briefly summarized. In addition, less common applications of tungsten devices are discussed, including analyte preconcentration by adsorption or electrodeposition and electrothermal separation of analytes prior to analysis. Tungsten atomization devices continue to provide simple, versatile alternatives for analytical atomic spectrometry. 相似文献
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介绍了食品中无机盐前处理和检测技术研究进展,主要阐述了包括火焰原子吸收光谱法、石墨炉原子吸收光谱法、电感耦合等离子体原子发射光谱法、原子荧光光谱法、X射线荧光光谱法及联用等技术在近年来的应用,并对以后的发展方向进行了展望。 相似文献
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Duran Karakas Ilhan Olmez Gurdal Tuncel 《International journal of environmental analytical chemistry》2013,93(10):705-720
Instrumental neutron activation analysis, flame atomic absorption spectrometry, flame atomic emission spectrometry, graphite furnace atomic absorption spectrometry, ion chromatography and visible spectrometry were applied to determine the compositions of atmospheric aerosols, which were collected at a rural site in the Western Black Sea Coast of Turkey. A total of 354 daily aerosol samples were analyzed for about 46 trace and major elements and ions. Sample preparation, quality control procedures, and instrumental operating conditions were reported. Most of the elements measured commonly by the above techniques have very large correlation coefficients and low intercept values indicating the agreement between the results. 相似文献
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F. S. Diver D. Littlejohn T. D. B. Lyon G. S. Fell 《Fresenius' Journal of Analytical Chemistry》1988,332(6):627-629
Summary An investigation through interlaboratory comparison using different analytical techniques has been carried out in order to assess the suitability of a plasma protein solution as a source for a trace element reference material in clinical analysis. Reasonable agreement was obtained for a number of elements from the range studied: Al, Ba, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Se, Sr, V and Zn. The techniques used included flame and furnace atomic absorption spectrometry (FAAS and ETA-AAS), furnace atomic emission spectrometry (ETA-AES), inductively coupled plasma atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS), and simultaneous multi-element atomic absorption spectrometry (SIMAAC). Results indicated that this plasma protein solution may prove useful as a source for a reference material covering trace element levels outwith the range found in normal human plasma.
Humanalbumin als Referenzmaterial für Spurenelemente相似文献
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提出了矿石中0.00X~XX%不同含量范围内锑的极谱-原子吸收法快速分析方法。该方法使锑在2%H2SO4-10%HCl同一被测体系中既可以应用于极谱法,也可应用于原子吸收法测定;方法快速简便,高效准确,已用于锑矿的采、选、冶生产过程控制分析,效果良好。 相似文献
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An HCl/HNO3/HF PTFE bomb dissolution technique using microwave heating was tested on several environmental and biological materials. Nearly 25 elements in the dissolved samples were determined mainly by inductively coupled plasma—atomic emission spectrometry or graphite furnace atomic absorption spectrometry. Results of the analysis of several hundred samples are discussed. 相似文献