Accession Number : ADA299293

Title :   Rapid Screening of Metals Using Portable High-Resolution X-Ray Fluorescence Spectrometers,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Hewitt, Alan D.

PDF Url : ADA299293

Report Date : APR 1995

Pagination or Media Count : 20

Abstract : Analysis of copper, zinc, arsenic, lead, chromium, cobalt, nickel, mercury, thallium, selenium, silver, antimony, cadmium, tin, and barium was performed on soils and other particle matrices using two field-portable high-resolution X-ray fluorescence spectrometers (XRF). Quantitative determinations were based on fundamental parameter analysis and a second method that relies on analyte response factors and uses the Compton K(sub a) incoherent backscatter peak far matrix normalization. These two methods af instrumental analysis require only a few reference materials and are relatively insensitive to sample matrix composition. This study assessed the capability of these two rapid XRF analysis methods by determining metal concentrations in reference materials, field samples, and laboratory spiked soils. With the exception of nickel, cobalt, and chromium, concentrations within 50% of the expected values were consistently obtained at and below 1000 micro g/g. jg p.2

Descriptors :   *METALS, *FLUORESCENCE, *HIGH RESOLUTION, *X RAYS, *SOILS, *SPECTROMETERS, PORTABLE EQUIPMENT, PARAMETRIC ANALYSIS, MATRIX MATERIALS, BACKSCATTERING, CHEMICAL COMPOSITION, RESPONSE, COPPER, SAMPLING, MERCURY, ZINC, CADMIUM, TIN, NICKEL, CHROMIUM, ANTIMONY, ARSENIC, BARIUM, SILVER, CONCENTRATION(CHEMISTRY), METAL COMPOUNDS, COBALT, SPIKES, THALLIUM, SELENIUM.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy
      Optics
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE