| abstract |
The invention provides a method for improving the accuracy of element determination in a heteropoly acid catalyst, which comprises the following steps: dissolving a heteropoly acid sample to be detected by adopting an alkali solution to obtain a first material, and diluting by adopting an internal standard solution to fix the volume; according to the method, the heteropoly acid sample to be detected is dissolved by the alkali solution, and the internal standard substance solution is selected for dilution and volume fixing, so that the dissolving time of the heteropoly acid sample to be detected is remarkably reduced, the matrix effect of an external standard method is eliminated, pretreatment such as acid dispelling and pH adjusting is not needed, and the stability and efficiency of the measurement result are greatly improved. |