Analysis of bromine in brines using energy dispersive x-ray fluorescence



Publisher: U.S. Geological Survey in Jiddah, Saudi Arabia

Written in English
Published: Downloads: 13
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Subjects:

  • Bromine -- Analysis.

Edition Notes

Statementby Cole L. Smith.
SeriesOpen-file report -- 81-750., Open-file report (Geological Survey (U.S.)) -- 81-750.
ContributionsGeological Survey (U.S.)
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17653766M

The following periodic table provides access to sample XRF spectra of pure elements (flat disk or nuggets unless specified otherwise) taken with an Innov-X a X-Ray Fluorescence spectrometer with a Si-PiN detector (Hardware settings: Source: Ta; Voltage: 40 kV; Current: 24 uA; Filter: uM Cu, Analytical Mode-FP algorithm, acquisition time 34s). Elemental Analysis by X-ray Fluorescence See below the available XRF calibration modules and reference materials: Omnian for standardless elemental analysis of a wide range of materials. The method described is x-ray fluorescence applied to PM10, fine ( um) and coarse ( um) aerosols particles captured on membrane samplers which collect these particles are designed to separate particles on their inertial flow characteristics producing size ranges which simplify x . ISO Petroleum and related products — Determination of chlorine and bromine content — Wavelength-dispersive X-ray fluorescence spectrometryCategory: p.

1. Scope. This method covers the determination of bromine (Br) and chlorine (Cl) in uranium hexafluoride (UF 6) and uranyl nitrate method as written covers the determination of bromine in UF 6 over the concentration range of to 8 μg/g, uranium basis. The chlorine in UF 6 can be determined over the range of 4 to μg/g, uranium basis. Four different techniques are evaluated for borehole analysis of uranium and thorium ores. Methods involving (1) detection of fission product photons following /sup /Cf activation, (2) detection of low-energy uranium and thorium gamma-rays, (3) direct measurement of the keV photon from /sup. ENERGY DISPERSIVE X-RAY SPECTROSCOPY (EDS) Energy Dispersive X-Ray Spectroscopy (EDS) is an analytical technique to qualitatively and quantitatively identify the elemental composition of materials analyzed in an SEM. EDS analyzes the top few microns of File Size: 72KB. X-ray photoelectron spectroscopy (XPS or ESCA) curve fitting procedures, reference materials and useful notes are listed here to provide a starting point for the consistent interpretation of XPS spectra. These reference pages contain tips and techniques that are designed .

Qualitative analysis of solid phase synthesis reaction products by x-ray spectrometry Robert A. Carlton This thesis presents some results ofthe application of energy dispersive x-ray spectrometry (EDS) in the environmental scanning electron microscope (ESEM) to this problem. AAPG Search and Discover Article #© AAPG Annual Convention and Exhibition April Strategy for Developing and Calibrating Shale and Mudstone Chemostratigraphies Using Hand‐Held X‐ray Fluorescence Units Rowe, Harry 1; Hughes, Niki 1 (1) Earth and Environmental Sciences, UT Arlington, Arlington, TX. Atomic spectrometry update-X-ray fluorescence spectrometry. Margaret West * a, Andrew T. Ellis b, Philip J. Potts d, Christina Streli c, Christine Vanhoof e, Dariusz Wegrzynek f and Peter Wobrauschek c a West X-ray Solutions Ltd, Whirlowdale Road, Sheffield, S11 9NF, UK b Oxford Instruments X-ray Technology, El Pueblo Road, Scotts Valley, CA , USA c Vienna University of Technology. So we analyzed the elements using energy-dispersive x-ray spectroscopy. And in the spectrum I got were the characteristic Dysprosium emission line and the one from Sodium pretty much on the same spot. So we had to do a wavelenght-dispersive test as well and then I was able to confirm the sodium.

Analysis of bromine in brines using energy dispersive x-ray fluorescence Download PDF EPUB FB2

Get this from a library. Analysis of bromine in brines using energy dispersive x-ray fluorescence. [Cole L Smith; Geological Survey (U.S.)]. Energy-dispersive X-ray fluorescence (EDXRF) spectrometry is a nondestructive, rapid, multielement, highly accurate, and environment friendly analysis compared with other elemental detection methods.

Thus, EDXRF spectrometry is applicable for production quality control, ecological environment monitoring, geological surveying, food inspection, and heritage analysis, among by: 1.

The feasibility of wavelength dispersive X-ray fluorescence spectrometry (WDXRF) for a simplified analysis of bromine (Br) in water samples with the aid of strong anion exchange (SAX) disk Cited by: 5. ANALYSIS OF BROMINE IN BRINES USING ENERGY DISPERSIVE X-RAY FLUORESCENCE by Cole L.

Smith U.S. Geological Survey Open-File Report ~7^~o This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards. Use of Cited by: 1. Energy Dispersive X-ray Fluorescence (EDXRF) is one of two general types of X-ray Fluorescence techniques used for elemental analysis applications.

X-ray optics can be used to enhance EDXRF instrumentation. For conventional XRF instrumentation, typical focal spot sizes at the sample surface range in diameter from several hundred micrometers. Total reflection X-ray fluorescence spectrometry (TXRF) is a trace elemental micro analysis technique based on conventional energy dispersive X-ray fluorescence.

It has become increasingly popular in the last few decades and is applied in almost every field of trace elemental analysis where low detection limits and multi element capabilities. The bromide limit of detection by this approach was 10 μg L(-1). Good agreement was obtained between the TXRF results for the total bromine and bromide determinations in soils and those obtained by other popular analytical techniques, e.g.

energy dispersive X-ray fluorescence spectrometry (total bromine) and ionic chromatography (bromide).Cited by: Energy dispersive X-ray fluorescence spectrometry (EDX) enables rapid, non-destructive, multi-elemental analysis. Using EDX, bromide was detected in seawater but not in freshwater.

Research Analysis of bromine in brines using energy dispersive x-ray fluorescence book Element Analysis Based on Energy-Dispersive X-Ray Fluorescence MinYao,DongyueWang,andMinZhao College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Yudao Street, Nanjing, China.

Analysis of bromine in brines using energy dispersive x-ray fluorescence [] Smith, Cole L. Analysis of bromine in brines using energy dispersive x-ray fluorescence [microform] [ distributed by the Office of Scientific and Technical Information, U.S.

Dept. of Energy, ; Description Book — 1 online resource (p. An X-ray fluorescence (XRF) device using polarizing X-rays for trace element analysis of rocks, soils, sewage sludges, ashes and other related materials is described.

During a measuring time of 20 min, 40 elements (19⩽⩽92) can be determined with high precision with. X-ray Fluorescence For example, XRF is used in analysis of rocks and metals with an accuracy of ~% of the major elements. X-ray fluorescence (XRF) is the phenomenon where a material is exposed to X-rays of high energy, and as the X-ray (or photon) strikes an atom (or a molecule) in the sample, energy is absorbed by the atom.

Total bromine in brines may be determined directly by x-ray fluorescence by measuring the peak-to-background intensity ratio of the bromine K-alpha radiation. The accuracy of the determination is unaffected by wide differences in the specific gravity of the brines.

Bromine concentrations of 1 to ppm may be determined in about one minute with an accuracy comparable to that of usual. Wavelength Dispersive X-ray Fluorescence (WDXRF) is one of two general types of X-ray Fluorescence instrumentation used for elemental analysis applications.

In WDXRF spectrometers, all of the elements in the sample are excited simultaneously. Energy-dispersive X-ray spectroscopy (EDS, EDX, EDXS or XEDS), sometimes called energy dispersive X-ray analysis (EDXA) or energy dispersive X-ray microanalysis (EDXMA), is an analytical technique used for the elemental analysis or chemical characterization of a sample.

It relies on an interaction of some source of X-ray excitation and a characterization capabilities are due in. Monitoring total bromine and bromide concentrations in soils is significant in many environmental studies. Thus fast analytical methodologies that entail simple sample preparation and low-cost analyses are desired.

In the present work, the possibilities and drawbacks of low-power total reflection X-ray fluorescence spectrometry (TXRF) for the determination of total bromine and bromide contents Cited by: Detection of High Levels of Bromine in Vegetables Using X-Ray Fluorescence Spectrometry Article in Journal of health science 51(3) June with 77 Reads How we measure 'reads'.

The x-ray region is that part of the electromagnetic spectrum between about and Å (Ångstrom units) where Å= m. Only a relative small part of the total x-ray region is covered by the conventional x-ray spectrometer, about Å, this being referred to as the analytical x-ray region.

That is why. Abstract. Recent interest in the use of automated or semi-automated energy dispersive X-ray fluorescence analysis has created the need for improved mathematical techniques and computer software for use with this type of by: 9.

X-RAY FLUORESCENCE ANALYSIS I. QUALITATIVE ANALYSIS THEORY. When a sample is irradiated with high energy x-ray photons it will emit characteristic x-ray lines whose energy depends on the atomic number of the element of the sample material.

If a sample consists of a chemical compound or mixture, its fluorescence spectrum will also be complex. [Use of x-ray fluorescence analysis for determination of bromine in drug synthesis, with a look at chlorine (sulfur) and fluorine].

[Article in German] Sanner G, Usbeck H. In this paper the determination of bromine as represented in the literature is briefly reviewed with Author: Sanner G, Usbeck H.

Analysis by Energy Dispersive X-Ray Fluorescence (ED-XRF) technique of liquid samples and specimens in aqueous media requires that the sample chamber be flushed with helium gas.

Moreover the sample should also be covered with mylar foil to hold the sample. The helium environment and the X-ray beam but also affect the sensitivity of different : R.

Khatri. Determination by energy dispersive X-ray fluorescence displays excellent precision, but a linear calibration of intensity versus concentration for many elements exhibits significant deviation from a straight line.

Particle size effects that could cause errors in Cited by: 2. Both types rely on an energy dispersive detector and an x-ray tube; the difference is in the optic path. Direct Excitation Geometry (2D optics) In direct excitation geometry, the detector, sample and x-ray tube are positioned in the same plane.

Primary x-rays from the tube are filtered according to which elements are being : Nathalie Keng. energy dispersive X-ray (EDX) spectroscopy analysis system is attached to the scanning electron microscope, both qualitative and quantitative chemical analysis can be carried out.

In oxidation research the SEM is commonly used for imaging and chemical analysis of the microstructure ofFile Size: 1MB. the identification and quantification of several metals in homogenous polymeric material using energy dispersive X-ray spectrometry in (ASTM F ).

A Standard Operating Procedure of the U.S. Consumer Product Safety Commission allows the use of XRF for determining lead in polymeric materials, with certain limitations (CPSC-CH-E). In the present work, energy-dispersive X-Ray fluorescence (EDXRF) is used to determine the element composition of samples of Fucus vesiculosus.

X-ray fluorescence analysis is a powerful technique for elemental analysis of environmental samples ([14], [15]). It is a fast, non-destructive analytical method,Cited by: use of elementary analysis and analysis on plane surfaces with Philips PV wavelength dispersive X -ray fluorescence spectrofotometer.

On the basis of these results the EDAX equipment was calibrated. In this wa y it became possible to carry out a quantitative analysis for bromine and antimony of samples not being shaped as plane surfaces.

Elemental Analysis Using a Handheld X-Ray Fluorescence Spectrometer. The U.S. Geological Survey is collecting geologic samples from local stream channels, aquifer materials, and rock outcrops for studies.

of trace elements in the Mojave Desert, southern California. These samples are collected because geologic materials can release a varietyAuthor: Krishangi D. Groover, John A. Izbicki. XRF Spectrum of Bromine in the form of LiBr, taken with an Innov-X a X-Ray Fluorescence spectrometer with a Si-PiN detector (Hardware settings: Source: Ta; Voltage: 40 kV; Current: 24 uA; Filter: uM Cu, Analytical Mode-FP algorithm, acquisition time 34s).The anhydrous salt (92 wt% Br) was placed in a sealed cup with a miL Kapton® window.

X-ray standing wave analysis for bromine chemisorbed on germanium. M. Bedzyk *, G. Materlik * Corresponding author By combining the structure determining capabilities of X-ray diffraction with the chemical sensitivity of X-ray fluorescence, it was possible to measure the bonding geometry for a submonolayer of chemisorbed Br atoms on a real Cited by: cal data; however, energy dispersive x-ray fluorescence (ED-XRF) provides a more efficient means of data collection by using portable equipment that allows the investigator to take non-destructive, direct measurements.

While undertaking ED-XRF analysis of mudstones. The method is applicable to products or additives having chlorine contents in the range 0, 5 % (m/m) to 0, 0 % (m/m), and bromine contents in the range 0, 0 % (m/m) to 0, 0 % (m/m).

Other elements do not generally interfere, although lead may interfere at contents above 0, 0 % .