X-Ray Fluorescence Analysis Applied to Small Samples

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We describe an adaptation of photon excited x-ray fluorescence analysis which is optimized for the analysis of small samples. A fine focus x-ray tube is used in conjunction with small diameter detector collimators in order to focus on a small sample volume with as high sensitivity as possible. Sample areas of less than 1 mm diameter can be analyzed with ppm detectability. In applications involving the analysis of human hair samples, a minimum detectable limit of 10 ppm Hg can be realized in a 1 mm long segment of a single hair in a counting time of 200 seconds. Simultaneous ... continued below

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15 p.

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Jaklevic, J. M.; French, W. R.; Clarkson, T. W. & Greenwood, M. R. August 1, 1977.

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Description

We describe an adaptation of photon excited x-ray fluorescence analysis which is optimized for the analysis of small samples. A fine focus x-ray tube is used in conjunction with small diameter detector collimators in order to focus on a small sample volume with as high sensitivity as possible. Sample areas of less than 1 mm diameter can be analyzed with ppm detectability. In applications involving the analysis of human hair samples, a minimum detectable limit of 10 ppm Hg can be realized in a 1 mm long segment of a single hair in a counting time of 200 seconds. Simultaneous measurements of the sample mass can be obtained from the intensity of the incoherent scattering. An automated x-ray fluorescence analysis system using the technique for the scanning of elemental profiles in such hair samples will be described.

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15 p.

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  • 26th Annual Conference of Applications of X-Ray Analysis, Denver, Colorado, August 2-5, 1977

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  • Report No.: LBL-6451
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 991741
  • Archival Resource Key: ark:/67531/metadc1012704

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • August 1, 1977

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 18, 2017, 12:55 p.m.

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Jaklevic, J. M.; French, W. R.; Clarkson, T. W. & Greenwood, M. R. X-Ray Fluorescence Analysis Applied to Small Samples, article, August 1, 1977; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1012704/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.