Research on a simple analysis method for aqueous solution via total reflection x-ray fluorescence and argon peak normalization

Abstract

The commonly used internal standard method process for total reflection x-ray fluorescence (TXRF) is too cumbersome for online analysis. The accuracy of the method using argon peak in air as normalization standard is tested. It is compared with external standard method and Compton scattering line normalization method. The calibration curve was established using Ga standard solution. For the results of the argon peak normalization and external standard method, the correlation coefficients were 0.9995. For the results of the argon peak normalization and Ga peak normalization, the correlation coefficients were 0.997. The argon peak and Compton peak at different incident angles were compared. At the total reflection angle, the stability of the argon peak in low concentration samples is better than that of the Compton scattering line peak. This provides a theoretical basis for a simple analysis method of aqueous solutions based on argon peak normalization.