Shimadzu introduces its improved compact tabletop energy-dispersive
X-ray fluorescence EDX-720 spectrometer
The EDX-720 is released with improved sensitivity for Lead
(Pb) and Cadmium (Cd) which are most important elements for
the environmental analysis of green product (see RoHS below).
Furthermore, EDX-720 also has new attractive functions such
as the auto-selection of suitable calibration curve (e.g.
PE/PVC calibration curve), the auto-reduced measurement time
or the report generator for the RoHS/WEEE analysis.
Analysis using X-rays
Energy Dispersive X-ray fluorescence spectrometer (EDX) is
the instrument to perform qualitative and quantitative element
analysis in the range from 6C/11Na to 92U and is the ideal
tools for non-destructive applications. EDX is used in many
different applications areas in the chemical, electronic and
food industries as well as refineries. It can be used with
solid, powder and liquid samples. This is achieved by applying
X-ray to the sample and then analysing the re-emitted element
characteristic fluorescent X-ray. Security functions effectively
prevent exposure to X-rays at all times.
Easy handling and improved detection limits
With a simple push of a button, elements ranging from sodium
to uranium can be analysed quickly and easily. In addition,
the software enables measuring conditions to be adapted to
the sample characteristic. For precise analysis of lighter
elements the systems can be operated optionally under vacuum
or under a helium atmosphere. The built-in five-filter assembly
effectively reduces interference and increases the signal
quality. This way, the limits are markedly improved for detection
of e.g. lead, cadmium, chlorine or chromium.
The large sample chamber accepts samples up to 300 mm diameter
and 150 mm height. Additionally, many accessories are available,
for instance a precision stage for accurate sample positioning
as well as various sample turrets for 8 or 16 samples. The
detector system requires liquid Nitrogen (N2) but
a thermoelectric cooled detector system is also available.
For the measurement of small samples, the X-ray is decreased
easily using the two optional collimator assemblies. Two different
assemblies are available:
- 1, 3, 5, 10 mm
- 0.3, 1, 3, 10 mm
The exact positioning of small samples can be monitored accurately
using an optional colour CCD camera.
WEEE and RoHS
In addition, the EDX series offers, with respect to WEEE (Waste
Electrical and Electronic Equipment) and RoHS (Restriction
of the use of certain Hazardous Substances in electrical and
electronic equipment) simple and fast decision-making criteria
in order to adhere to these directives. The EDX systems enable
analyses of mercury, cadmium and lead in polymer building
parts (such as casings and cable solderings) down to the ppm
range. During EDX analysis, hexavalent chromium, PBB (polybrominated
biphenyls) and PBDE (polybrominated diphenyl ether) are detected
as elemental chromium and elemental bromine.