Abstract：A method of Xray fluorscence spectrometry（XRFS） was proposed to determine 11 elements of Al, P, S, K, Ca, Mn, Fe, Ni, Cu, Zn and Pb in the tea.The peak area method was widely used in the determination model of traditional energy dispersion Xray fluorescence,which easily resulted in a major error due to the peak location overlaps of different elements. The peak method modeling was adopted to analyze the data from Xray fluorescence and achieve good prediction efficiency. The 11 elements were detected by PLS+ANN to establish calibration model.The results show that 10 elements have good correlation coefficients except Ni element with 0.6. The correlation coefficients of Ca and Zn are above 0.7, and those of P, S, K, Cu and Pb are exceed 0.8 with those of Al, Mn and Fe greater than 0.9.It is reasonable to apply the peak method into Xray fluorescence for determining element content.
2016, Vol. 37 
