Method for preparing aluminum alloy solution example when detecting aluminum alloy constituent by plasma spectroscopic method

Abstract

The invention relates to method of sample solution when using plasma spectroscopy method to measure aluminum alloying composition. The method first place solid aluminum alloying samples in the plastic container, then add enough non-oxidative strong acid solution to plastic container and make the strong acid and aluminum alloying samples fully contact, there are bubbles generate in the mixtures in the plastic container, until no bubbles generate then drop nitric acid and hydrofluoric acid aqueous solutions to the compound mixture until solid aluminum alloying samples all dissolve, stewing to make the solution clarified then dilute to calibration volume and shake to uniform then the aluminum alloying sample solution will be obtained; or stewing to make the solution clarified, after the after treatment then dilute to calibration volume and shake to uniform then the aluminum alloying sample solution will be obtained. The aluminum alloying samples solution made by the method of this invention are of low salinity, low spectral background and easy to measure trace impurity elements.

Description

technical field [0001] The invention relates to a method for preparing aluminum alloy solution samples when measuring alloy components by plasma spectrometry. Background technique [0002] Inductively coupled high-frequency plasma atomic emission spectrometry (ICP-AES) is to allow the sample solution to be tested to be atomized to form an aerosol with argon gas, and the carrier gas (argon gas) is introduced into the plasma light source, and the sample aerosol is passed through the plasma Evaporate and excite to form high-energy state particles (atoms and ions of elements). When this unstable high-energy state particle transitions to the ground state, it will emit spectral lines of a certain wavelength, which are called characteristic spectral lines of elements, and characteristic spectral lines of different elements. After being separated by the optical system, the intensity of these characteristic spectral lines is measured by the measuring element, and the qualitative and ...

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of using the aluminum alloy solution sample prepared by this alkali dissolution method to measure the composition of the aluminum alloy by plasma spectrometry are: first, the operation is complicated and takes a long time; second, in order to promote the dissolution of the solid aluminum alloy, it is necessary to The container is heated, which consumes more energy; third, the amount of sodium hydroxide or potassium hydroxide and hydrogen peroxide required by this method is relatively large; fourth, the salinity is high, and with the addition of different strong acids, the sample solution contains more High concentrations of sodium sulfate (or potassium sulfate), sodium chloride (or potassium chloride) or sodium nitrate (or potassium nitrate) make the spectral background in the plasma spectrometry measurement large and disturbing, and are not suitable for plasma spectroscopic analysis Fifth, due to high salinity and high interference, it is difficult to accurately determine trace impurity elements in aluminum alloys