Results 271 to 280 of about 389,099 (341)

The Determination of Oxides of Sulfur by X-Ray Emission Spectrometry

American Industrial Hygiene Association Journal, 1968
Abstract Determination of sulfur dioxide, sulfur trioxide, or sulfuric acid mist becomes difficult in the presence of other acid gases or where collected samples are highly colored or turbid. A method is described by which all oxides of sulfur are oxidized and precipitated as barium sulfate.
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Determination of Catalyst Residues in Polyolefins by X-Ray Emission Spectrometry.

Analytical Chemistry, 1962
AbstractX-ray fluorescence methods for the direct determination of aluminum, chlorine, titanium, and iron in polyolefins have been developed. The procedures require no preconccntration of elements, are satisfactory for any polyolefin, and are free from matrix effects.
G. D. Smith, R. L. Maute
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Analysis of metal-laden water via portable X-ray fluorescence spectrometry

Journal of Hydrology, 2018
A rapid method for in-situ elemental composition analysis of metal-laden water would be indispensable for studying polluted water. Current analytical lab methods to determine water quality include flame atomic absorption spectrometry (FAAS), atomic ...
D. Pearson, D. Weindorf, S. Chakraborty, Bin Li, Jaco Koch, P. V. Deventer, J. D. Wet, N. Y. Kusi   +7 more
semanticscholar   +1 more source

Applications of wavelenght-dispersive spectrometry in particle-induced X-ray emission analysis

Nuclear Instruments and Methods, 1977
Abstract The high-resolution cpabilities of wavelenght-dispersive spectrometry can be profitably employed in the analysis of materials containing elements which cannot be early resolved by Si(Li) spectrometers. This situation frequently arises in cases where the concentration of an element must be determined in the presence of large quanities of ...
R.L. Watson, A.K. Leeper, B.I. Sonobe
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Analysis of phospholipids by thin-layer chromatography and X-ray emission spectrometry

Journal of Chromatography A, 1972
The use of X-ray emission spectrometry for in situ quantitative analysis of phospholipids after separation by two-dimensional thin-layer chromatography is described. With this procedure, microgram quantities of phospholipids can be analyzed.
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Application of X-Ray Emission Spectrometry to the Determination of Mercury in Biological Samples

Review of Scientific Instruments, 1973
This paper describes the application of x-ray emission spectrometry to quantitative determination of mercury in biological samples. Measurement of mercury in blood, water, kidney, and urine has been accomplished. Matrix effects were detectable but not critical.
P, Walsh, P, Hamrick, N, Underwood
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X-Ray Secondary-Emission (Fluorescence) Spectrometry; General Introduction

1975
Having considered the excitation, nature, and properties of x-rays and x-ray spectra, we now begin our study of the application of x-ray spectra to chemical analysis. However, first we define some terms used throughout the book.
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Determination of trace selenium in biological material by preconcentration and x-ray emission spectrometry

Analytica Chimica Acta, 1983
Selenium is determined in the ng g−1 to μg g−1 range in biological and environmental samples. A wet digestion procedure was optimized with respect to volatility losses and recovery yields, by using 75Se metabolically incorporated into rat organs. Selenium is preconcentrated from the digestion liquid by a two-step reduction with 4 M HCl and ascorbic ...
Robberecht, Harry, Van Grieken, René
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Proton-induced X-ray emission (PIXE) spectrometry — state of the art

Fresenius' Zeitschrift für analytische Chemie, 1986
The development of the PIXE method for multielemental analysis is described. A brief account is given of the physical principles and the experimental arrangements. The use of PIXE is illustrated by a number of typical applications in geology, biology, medicine and environmental research.
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A laser plasma X-ray source for the analysis of wafer surfaces by grazing emission X-ray fluorescence spectrometry

Spectrochimica Acta Part B: Atomic Spectroscopy, 2004
Abstract A wavelength-dispersive X-ray fluorescence spectrometer incorporating a novel X-ray source with which X-rays are generated by means of light pulses from a powerful femtosecond laser is described. The instrument has been designed in order to explore whether laser-induced X-rays can replace conventional X-ray sources in the examination of ...
H. Schwenke, J. Knoth, P.A. Beaven, R. Kiehn, J. Buhrz   +4 more
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