Method for simultaneous determination for Mo, Ti and W element of uranic fluoride

Abstract

The invention relates to a method for simultaneously determining Mo element, Ti element and W element in uranic fluoride, belonging to the chemical analysis field. The invention is characterized in that the method for simultaneously determining the Mo element, the Ti element and the W element through a neutral network spectrophotometry is as follows: the dosage of 4 to 8 mol / L hydrochloric acids is between 0.5 and 1.0 mL; the dosage of (1-3)x10<-3>mol / L salicyl fluorone is between 2.5 and 3.5 mL; the dosage of (1-3) x10<-2>mol / L cetrimide is between 3.0 and 6.0 mL; and the color development time is between 10 and 60 minutes. The method combines a neutral network and a spectrophotometry, gives full play to the advantages of the spectrophotometry and simplifies the chemical treatment process when a plurality of compositions are determined simultaneously. The method not only can provide an accurate chemometrics method for simultaneously determining a plurality of impurity elements in the uranic fluoride through the spectrophotometry but also can be promoted to the other uranium compound analysis field. The content ranges of the Mo element, the Ti element and the W element in the uranic fluoride determined by the method are respectively 0.5 to 7.0mu g / gU,0.3 to 5.0mu g / gU and 0.5 to 7.0mu g / gU.

Description

Simultaneous Determination of Mo, Ti and W Elements in UF6 technical field The present invention relates to a method for simultaneously determining the three elements Mo, Ti and W in uranium hexafluoride, in particular to a neural network spectrophotometric method for simultaneously determining the three elements Mo, Ti and W in uranium hexafluoride The method belongs to the field of mass spectrometry. Background technique Molybdenum, titanium and tungsten in nuclear fuel UF6 are the main impurity elements to be controlled. Spectrophotometry is usually used for the determination of a single component. In multi-component analysis, due to the overlap of component spectra, the measurement interferes with each other, and the chemical treatment process is cumbersome, time-consuming and labor-intensive. Combining artificial neural network with spectrophotometry, the advantages of spectrophotometry are brought into play, and the chemical treatment process is simplified when mult...

AI Technical Summary

Problems solved by technology

Spectrophotometry is usually used for the determination of a single component. In multi-component analysis, due to the overlap of component spectra, the measurement interferes with each other, and the chemical treatment process is cumbersome and time-consuming.