Determination of Trace Metals in Biological Samples by Inductively Coupled Plasma Atomic Emission Spectrometry with Discrete Nebulization after Microwave Decomposition

Trace metals in some biological samples were measured by the discrete nebulization technique in inductively coupled plasma atomic emission spectrometry. The small spray chamber and the time-sharing background correction system were used for the rapid measurements. Small amounts of the samples were decomposed quickly in a sealed PTFE vessel in a microwave oven. The analytical results for Al, Cu, Fe, Mn and Zn agreed well with the certified values and also with those obtained by continuous nebulization.