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

A plasma spectrum and solution sample technology, which is applied in the field of preparing aluminum alloy solution samples, can solve the problems of large spectral background, long time required, complicated operation, etc., and achieve the effects of low spectral background, fast dissolution speed and high light intensity

Active Publication Date: 2008-02-27
CRRC QISHUYAN CO LTD
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  • Abstract
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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,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment is a method for preparing the required aluminum alloy solution sample when the first part of aluminum alloy sample is measured by plasma spectrometry, and has the following steps:

[0020] ① Take the first aluminum alloy sample above, place it in a transparent 100ml plastic volumetric flask, then add 10ml of aqueous hydrochloric acid solution with a mass percentage concentration of 20% in the plastic volumetric flask, and make the solid aluminum alloy sample on the liquid surface of the mixture Under the action of hydrochloric acid, bubbles are formed in the mixed material in the container, and the aluminum alloy gradually dissolves;

[0021] ②When there are no more air bubbles in the mixed material in the plastic volumetric flask, add 2ml of 65% nitric acid aqueous solution and 10 drops of 40% hydrofluoric acid aqueous solution to the mixed material dropwise (the volume of 20 drops of hydrofluoric acid aqueous solution is about 1ml, that is, the volume ...

Embodiment 2 to Embodiment 5

[0025] Each embodiment in embodiment 2 to embodiment 5 is the method for preparing the required aluminum alloy solution sample when plasma spectrometry measures II to V aluminum alloy samples, and its preparation method is basically the same as embodiment 1, with the difference The reason is that the concentration and dosage of the medicines used in the preparation process of each embodiment are different, and the relevant data of the dosage and concentration of the medicines used in each embodiment in Example 2 to Example 5 are shown in Table 1.

[0026] The aluminum alloy solution samples prepared in Examples 2 to 5 were detected by an inductively coupled plasma spectrometer, and the detection and analysis methods were basically the same as in Example 1, except that: The analysis results of aluminum alloy solution samples are different, and the relevant data are shown in Table 1.

[0027] Table 1

[0028] Example serial number

Embodiment 6

[0030] This embodiment is a method for preparing the required aluminum alloy solution sample when measuring the composition of the VI aluminum alloy sample by plasma spectrometry. Be the sulfuric acid aqueous solution that mass percent concentration is 30%, and its consumption is 10ml; Step 2. in, when there is no bubble to generate in the mixed material in the plastic volumetric flask again, drip 1ml mass percent concentration in the mixed material again is 65% nitric acid aqueous solution and 15 drops of mass percent concentration are 40% hydrofluoric acid aqueous solution, find after standing for a period of time, only floating solid matter remains on the surface in the mixed material. Now, stop dripping the aqueous solution of hydrofluoric acid and only continue dripping the aqueous solution of 65% nitric acid to the solid matter floating on the surface of the solution by only continuing to drip the 1ml mass percent concentration; Add deionized water to the mixed solution ...

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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 ...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N21/66
Inventor 朱向阳
Owner CRRC QISHUYAN CO LTD
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