Energy dispersive x-ray fluorescence spectrometry for determination of twenty-six trace and two major elements in geochemical specimens

Journal Article · Sat Jan 01 04:00:00 EST 1977 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50009a025· OSTI ID:7223233

Giauque, R D; Garrett, R B; Goda, L Y

A method for analyzing geochemical specimens by energy dispersive x-ray fluorescence is described. The fact is used that at any given x-ray energy between adjacent major element absorption edges, both the reciprocal of the specimen mass absorption coefficient and the spectral background intensity vary linearly with the intensity of the Compton scattered excitation radiation. Hence, Compton scattered excitation radiation serves a dual role: as an internal standard and as a measure of spectral background intensity. Several pure compounds, for which the x-ray cross sections vary over a wide range, are used to develop individual x-ray line spectral background curves. Standardization is achieved utilizing geochemical reference standards. Accuracies typically obtained are 5% or better using 20-in analysis periods.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 7223233
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 49:1; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
58 GEOSCIENCES
580400 -- Geochemistry-- (-1989)
ALKALI METALS
ALKALINE EARTH METALS
ANTIMONY
ARSENIC
BARIUM
BASALT
BASIC INTERACTIONS
BROMINE
CADMIUM
CESIUM
CHEMICAL ANALYSIS
CHROMIUM
COMPTON EFFECT
COPPER
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELEMENTS
GALLIUM
GEOCHEMICAL SURVEYS
GERMANIUM
GRANITES
HALOGENS
IGNEOUS ROCKS
INDIUM
INTERACTIONS
IODINE
IRON
LEAD
MANGANESE
METALS
MINERALS
MULTI-ELEMENT ANALYSIS
NICKEL
NONDESTRUCTIVE ANALYSIS
NONMETALS
PALLADIUM
PLATINUM METALS
ROCKS
RUBIDIUM
SCATTERING
SELENIUM
SEMIMETALS
SERPENTINE
SILVER
STRONTIUM
TELLURIUM
TIN
TITANIUM
TRANSITION ELEMENTS
VANADIUM
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS
YTTRIUM
ZINC
ZIRCONIUM