Download Advances in atomic spectroscopy. / Volume 2 by J. Sneddon PDF

By J. Sneddon

ISBN-10: 0080546374

ISBN-13: 9780080546377

ISBN-10: 1281026816

ISBN-13: 9781281026811

This sequence describes chosen advances within the sector of atomic spectroscopy. it really is promarily meant for the reader who has a heritage in atmoic spectroscopy; compatible to the beginner and professional. even if a time-honored and authorized technique for steel and non-metal research in various complicated samples, Advances in Atomic Spectroscopy covers quite a lot of fabrics. each one bankruptcy will thoroughly conceal a space of atomic spectroscopy the place speedy improvement has occurred.

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Extra info for Advances in atomic spectroscopy. / Volume 2

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2 laJ; N 25 gJ; Y (continued) Table 4. Reference Wei et al. (1990) Element ~x/Lf]uor LOD (fg) A1 308/394, 396 Fe 297/373 Mn Pb 279/403 283/405 Sn TI Wittman and Winefordner (1984) Mn Na Sn Womack et al. 3 ng/mL FS; continuous flow fum. 5 ng/mL T; continuous flow fum. ; ? ; ? /? /? /? 6 laJ; N Laser-Excited Fluorescence 23 involatile elements (Ba, Bi, Eu, Ir, Li, Mo, Ni, Pd, Pt, Rh, V) that to this time have only been investigated using cup furnaces. Table 5 is a comparison of the best graphite furnace LEAFS detection limits to the most sensitive, commercially available atomic spectrometry techniques: graphite furnace AAS and inductively coupled plasma-mass spectrometry (ICP-MS).

Much of the work up to now has concentrated on "easy" elements, such as lead and thallium. The determination of involatile elements by LEAFS needs to be further investigated, as well as work concerning the types of backgrounds present. 0ram TANTALUM JET / TO PUMP (b) HOLDER GRAPHITE TUBE / ~I ~ ! JET WITH lmm DIAMETER NOZZLE (c) RUBBER O-RING TU ~ MAIN CHAMBER GRAPHITE TUBE HOLDER Figure 26. Threeviews of the impaction chamber usedfor graphitefurnace LEAFS: (a) generalview; (b) impactiondevice mounted into the graphitefurnace;(c) close up of the nozzle insidethe graphitetube.

8 nm. Taken with permission from Liang et al. (1993). work. The other disadvantage is that approximately 25% of the light was lost in the use of the optical fibers. Remy et al. (1990) employed a slightly different method of multichannel background correction for graphite furnace LEAFS. They used a beamsplitter to produce two beams of fluorescent light that were collected by two monochromators. One of the monochromators was set at the analyte fluorescence wavelength and used to measure the fluorescence plus background signals.

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