B DETERMINATION OF CADMIUM BY ICP-OES

1 Solutions with cadmium compounds are nebuiised into an argon piasma, where all components are vaporised. Cadmium compounds are dissociated and excited, and then emit radiation of which the intensity is measured at a wavelength of 214.439 nm. 

1 This procedure yields a standard curve that is linear up to at least 2 mg/L Cd. 

2 The detection limit is approximately 0.002 mg/L in the digest. The determination limit is approximately 0.006 mg/L (0.7 respectively 2.0 mg/kg in dried plant 

1 The reproducibility of determinations by this procedure should give, at reasonable control and thorough sample preparation, a coefficient of variation within 5 % + 5 

1 Inductively coupled plasma optical emission spectrometer. 

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