Page 6 - Material Characterizations

Wavelength

Dispersive

X-Ray

Fluorescence

Spectrometer

WDX

High Resolution Elemental Analysis

How It Works
An X-ray source irradiates a sample, which in turn emits fluorescent
x-rays. The fluorescent X-rays are characteristic of the material. This
information is used to identify an unknown sample. The intensity of the
X-rays is indicative of the concentration of the material within a sample.
If standards are available, a calibration curve can be developed to
measure the concentration accurately. On the other hand, it is possible to
use theoretical method to estimate the concentration, if a standard is not
available.

Unlike EDX spectrometers, WDX spectrometers use crystals to diffract the
wavelengths of fluorescent X-rays before they reach detectors. As a
result, the WDX spectrometers typically have better resolution several
times over EDX spectrometers.
XRF-1800
Major Advantages Areas of Application
Unlike ICP analysis or AAS analysis • Electrical & Magnetic Materials
which requires meticulous sample • Chemical industry
pre-treatments, WDX analysis requires • Petroleum & Coal Industry
minimum or no sample pre-treatment. • Ceramic, Building &
For example, grinding a solid sample to Construction Materials
homogenize the compound. Quantitation • Papers & Pulps
is possible in the absence of a standard. • Agriculture and Food Products
This Is accomplished using theoretical • Iron, Steel & Non-Ferrous Metals
approximation. • Environment Pollutants MXF-2400

10 Excellence in Science