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Accurate Quantification of Cadmium, Chromium, Mercury and Lead in Plastics for RoHS Compliance using the Agilent 7500ce ICP-MS

This paper relates to work carried out under project Project OA1– International Chemical Metrology of the NMS Chemical and Biological Metrology programme.

This application note describes the quantification of cadmium, chromium, lead and mercury in plastic materials by external calibration using the Agilent 7500ce ICP-MS system equipped with an Octopole Reaction System (ORS). Isotope dilution analysis with ICP-MS was used as a confirmatory technique. Good agreement of the results obtained by the two calibration approaches was achieved. The sample digestion methodology, tuning considerations, results and uncertainty estimations are discussed. The method validated with IDMS results has potential as a fast analytical tool for compliance testing laboratories.

Further information can be obtained from the Agilent website or by contacting the authors via the NMS helpdesk at LGC.