Determination of trace elements in plants by the X-ray fluorescence analysis for environmental pollution investigations

A new approach to solving matrix problems in x-ray fluorescence analysis of trace elements has been applied to the determination of bromine in saline waters and zinc in silicates. The method requires no prior knowledge of the chemical composition of the sample. Marked matrix effects are minimized by dilution, and the problem of variable backgrounds due to residual matrix effects is solved by using a slope-ratio technique. In this proposed technique, the slope of a standard curve prepared from pure solutions is compared with that of spiked samples. The ratio of the slopes of these two curves permits the calculation of an adjusted background which does not significantly differ from that of an absorbent impregnated with the sample matrix free of the element sought. Experimental parameters concerning the technique are presented. The excellent agreement of the zinc and bromine data with analytical results obtained by more conventional methods suggests that the technique can be used for the determination of other trace constituents in geologic materials. Application of the slope-ratio technique to other modes of instrumental analysis appears feasible.

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Fast determination of trace elements on aerosol-loaded filters by X-ray fluorescence analysis considering the inhomogeneous elemental distribution

Fresenius Journal of Analytical Chemistry ◽

10.1007/s002160050034 ◽

2000 ◽

Vol 366 (2) ◽

pp. 174-177 ◽

Cited By ~ 16

Author(s):

G. Steinhoff ◽

O. Haupt ◽

W. Dannecker

Keyword(s):

Trace Elements ◽

Fluorescence Analysis ◽

Elemental Distribution ◽

Fast Determination ◽

X Ray

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Determination of Trace Elements in Wheat Flour by X-Ray Fluorescence Analysis and Its Application to Identification of Their Production Area

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.58.1011 ◽

2009 ◽

Vol 58 (12) ◽

pp. 1011-1022 ◽

Cited By ~ 10

Author(s):

Akiko Otaka ◽

Yoko Yanada ◽

Akiko Hokura ◽

Kenji Matsuda ◽

Izumi Nakai

Keyword(s):

Trace Elements ◽

Wheat Flour ◽

Fluorescence Analysis ◽

X Ray ◽

Production Area

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Determination of Sulfur, Ash, and trace Element Content of Coal, Coke, and Fly Using Multielement Tube-Excied X-ray Fluorescence Analsis

Advances in X-ray Analysis ◽

10.1154/s0376030800012039 ◽

1976 ◽

Vol 20 ◽

pp. 431-436

Author(s):

J. A. Cooper ◽

B. D. Wheeler ◽

G. J. Wolfe ◽

D. M. Bartell ◽

D. B. Schlafke

Keyword(s):

Trace Elements ◽

Fly Ash ◽

Trace Element ◽

Trace Element Content ◽

Fluorescence Analysis ◽

Major And Trace Elements ◽

Average Concentration ◽

Ash Content ◽

X Ray

A procedure using tube excited energy dispersive x-ray fluorescence analysis with interelement corrections has been developed for multielement analysis of major and trace elements and ash content of coal, coke, and fly ash. The procedure uses pressed pellets and an exponential correction for interelement effects. The average deviations ranged from about 0.0003% for V at an average concentration of about .003% to 0.1% for S at an average concentration of 4%. About 25 elements were measured and 100 second minimum detectable concentrations ranged from about one part per million for elements near arsenic to about one tenth of one percent for sodium.

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DETERMINATION OF TRACE ELEMENTS OF EMBOLI (CLOT) IN THE CARDIOVASCULAR SYSTEMS OF PATIENTS BY ENERGY DISPERSIVE X-RAY FLUORESCENCE ANALYSIS

Instrumentation Science & Technology ◽

10.1081/ci-120015452 ◽

2002 ◽

Vol 30 (4) ◽

pp. 449-454 ◽

Cited By ~ 3

Author(s):

Azman Ates ◽

Mehmet Ertugrul

Keyword(s):

Trace Elements ◽

Fluorescence Analysis ◽

Energy Dispersive ◽

X Ray ◽

Cardiovascular Systems

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The Application of Tunable Monochromatic Synchrotron Radiation to the Quantitative Determination of Trace Elements

Advances in X-ray Analysis ◽

10.1154/s037603080001377x ◽

1984 ◽

Vol 28 ◽

pp. 53-60

Author(s):

R. D. Giauque ◽

J. M. Jaklevic ◽

A. C. Thompson

Keyword(s):

Trace Elements ◽

Quantitative Analysis ◽

High Resolution ◽

Fluorescence Analysis ◽

Excitation Energies ◽

Incident Flux ◽

Polarization Effects ◽

X Ray ◽

Monochromatic Synchrotron

The potential advantages of synchrotron sources for x-ray fluorescence analysis have been discussed by several authors. These advantages include high incident flux, tunable excitation energies using crystal monochromators, and reduction of scattered background due to polarization effects. Minimum detectable limits have both been calculated and measured, and have demonstrated the improvements that can be achieved vising synchrotron sources. In this paper we present results obtained using tunable, monochromatic excitation and a high resolution lithium-drifted silicon, Si(Li), spectrometer for the quantitative analysis of a variety of sample types. Our experiments were designed to investigate the advantages and limitations of tunable monochromatic excitation with respect to optimum sensitivity, accuracy, and elemental selectivity in energy dispersive x-ray fluorescence analysis.

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