Cadmium determination in wrapping paper

The determination of cadmium in wrapping paper was carried out by the “Inorganic Constituents” working group in an interlaboratory comparison. Pressure digestion in PTFE bombs and high pressure ashing in quartz vessels with nitric acid were used. Eleven participants used ET AAS and only two DPASV for cadmium determination. The mean of all (13) participants was 0.059±0.027 mg/kg. Individual data are presented.