Correction of Spectral Interference of Zn to W in Geological Samples by ICP-AES

A method for the determination of W in geological samples by inductively coupled plasma-atomic emission spectrometry(ICP-AES) has been developed. The sample was decomposed by HNO₃-HF-HClO₄. The spectral interference of Zn 207.908 to W 207.911 was discussed,and the interference can be corrected using the interference correction method (IEC).The results showed that the spectral interference of Zn to W can be thus effectively eliminated,the results after the spectral correction were evidently better than the results without the spectral interference correction by the IEC.