Simultaneous Determination of Macro-amount and Trace Elements in Soil and Stream Sediment Samples by Inductively Coupled Plasma- Optical Emission Spectrometry with Multi-direction Viewing Mode

A method for the determination of 23 macroamount and trace elements， including Al, Fe, Ca, Mg, K, Na, P, Ba, Be, Cd, Ce, Co, Cr, Cu, Li, Mn, Mo, Ni, Pb, Ti, V, W and Zn in soil and stream sediment samples by inductively coupled plasmaoptical emission spectrometry (ICP-OES) was reported. Multidirection viewing mode (axial, radial, axial attenuation and radial decay) was selected for each element with less spectral interference. The use of multi-component spectral fitting technology for spectral interference correction remarkably improved the detection limits and precision of the method. The recovery was 94.0%~103.4% with the precision of less than 3.0%RSD (n＝10). The method has been applied to the determination of macro-amount and trace elements in National Standard Reference Materials and the results are in agreement with certified values.