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 XRF |
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X-rays from the X-ray tube (or isotope source) pass through an optional filter on their way to
the sample (which may be in air, He or vacuum). X-rays from the sample then travel to the
detector, which is cooled either electrically or with liquid nitrogen. The signal at the detector
is then processed by electronics and sent to a computer or microprocessor. An inner shell
electron is excited by an incident photon in the X-ray region. During the de-excitation
process, an electron is moving from a higher energy level to fill the vacancy. The energy
difference between the two shells appears as an X-ray, emitted by the atom. The X-ray
spectrum acquired during the above process reveals a number of characteristic peaks. The
energy of the peaks leads to the identification of the elements present in the sample
(qualitative analysis), while the peak intensity provides the relevant or absolute elemental
concentration (quantitative analysis).
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X-Ray Spectroscope |
XRF(X-ray Fluorescence Spectroscope) is the emission of characteristic ＾Secondary￣ (or
fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-
rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical
analysis, particularly in the investigation of metals, glass, ceramics and building materials.
When materials are exposed to short-wavelenght x-rays or to gamma rays, Ionisation of their
component atoms may take place.?Each element has electronic orbitals of characteristic
energy, This Energy information shows elemental Z and the intensity of each characteristic
radiation is directly related to the concentration of element in the material.
The XRF spectroscopy is widely used for the qualitative and quantitative elemental analysis
of environmental, geological, biological, industrial and other samples.
iEDX-100A. Made by ISP
The radiation from the X-Ray tube excites atoms in a sample, emitting secondary X-Rays.
The crystal analyzer expands this radiation into a spectrum registered with a proportional
detector. The computer recalculates the intensities of spectral lines into concentrations of
elements.
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Qualitative Analysis
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If the sample composition is unknown, the qualitative analysis mode
， provides an express determination of any of the 73 chemical elements in the chosen
range ， without preliminary sample preparation
， subtracts background & estimates elemental concentrations
， displays the spectrum together with a reference table of wavelengths
， saves and prints the spectrum showing the line labels
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Quantitative Analysis
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This mode provides measuring the concentrations with accuracy comparable to chemical
analysis.
The measurement takes place in two stages: first, the instrument is calibrated
using standard samples, then the elemental composition of the sample is determined. When
a series of similar samples is measured, the calibration is done only once. The matrix effects
are calculated using the multiple regression method, the latest version of the standard-
background method or by the internal standard method. The results of calibration and sample
measurement are displayed and printed. The duration of one element determination varies in
the range of 5-100 sec. This method is especially convenient when a large variety of
samples with different chemical compositions are measured in a short time.
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Application
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， Electronic, Automobile Resine, Jewelry
， Catapulting, Plating
， RoHS, WEEE, ELV Screening
， Lead and Nickel Screen in Jewelry and Toy
， Environmental Pollution analysis
， Research, Education, Elemental analysis
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Advantage
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， Broad analysis scope(ppm ~ wt%)
， Analysis numerous elements at the same time
， High sensitive, High precise analyzer
， Simple operating environment
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Specification: CX-100S
| Measure Method |
Energy Dispersive X-ray Analysis |
| Sample Type |
Solid/Liquid/Powder |
| X-ray Tube |
Solid/Liquid/Powder |
| Filter |
5 Filter Auto Change |
| Detection System |
Si-Pin Diode (Peltier System) |
| Energy Resolution |
149eV at Mn-Kメ(5.9eV) |
| Detection Element |
Al(13) ~ U(92) |
| Analyze Method |
FP/Calibration Curve , Absorption, Fluorescence |
| Stage monitoring |
CCD Camera |
| Control System |
Desk-Top, Notebook, USB interface |
| Power |
220VAC 50/60Hz |
| Weight |
38Kg(NET) |
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