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Restriction of use of certain hazardous substances
— directives on waste electrical and electronic equipment

European Union (EC) environmental legislation contributes towards a better environment but has significant implications for many manufacturing companies in terms of marketing, design, manufacturing and "end-of-life" recovery and recycling. The Directives on Waste Electrical and Electronic Equipment (WEEE), 2002/96/EC, and the Restriction of Use of Certain Hazardous Substances (RoHS), 2002/95/EC, will require producers to recycle waste electrical/electronic equipment and remove certain hazardous substances.

Specifically, RoHS provides that new electrical and electronic equipment put on the market for the first time from July 1, 2006 should not contain certain heavy metal toxins, including: lead (Pb), cadmium (Cd), mercury (Hg), and hexavalent chromium (Cr). Rigaku Energy Dispersive X-ray Fluorescence (EDXRF) can help manufacturers comply with RoHS/WEEE by providing rapid elemental analysis.

Semiquantitative elemental analysis without standards 

The Rigaku NEX CG EDXRF is powered by a new qualitative and quantitative analytical software, RPF-SQX, that features Rigaku Profile Fitting (RPF) technology. The software allows semi-quantitative analysis of almost all sample types without standards—and rigorous quantitative analysis with standards. Featuring Rigaku's famous Scatter FP method, the software can automatically estimate the concentration of unobserved low atomic number elements (H to F) and provide appropriate corrections.

RPF-SQX greatly reduces the number of required standards, for a given level of calibration fit, as compared to conventional EDXRF analytical software. As standards are expensive, and can be difficult to obtain for newly developed materials, the utility of having a NEX CG spectrometer can significantly lower costs and reduce workload requirements for routine elemental analysis needs.

RoHS / WEEE information and resources


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