Uranium concentration analysis method

The invention belongs to the technical field of the analytic chemistry, and discloses a uranium concentration analysis method. The method comprises the following steps: 1, measuring the transmission spectrum of a blank solution under continuous energy X-ray irradiation to obtain the incident light intensities I0 of the uranium solution under different energies; 2, preparing uranium standard solutions, and respectively measuring the transmission spectrums through using the X-ray irradiation in step 1 to obtain the transmitted intensities I of all the uranium standard solutions under different energies at two sides of an LIII absorption edge; 3, calculating to obtain the transmissivities T of the uranium standard solutions under the different energies at two sides of the LIII absorption edge; 4, making an lnln(T)-ln(E) linear curve of the standard solutions under the different energies at two sides of the LIII absorption edge, and obtaining the transmissivity T1 at the low energy side and the transmissivity T2