Digestion solution and method for determining content of elements in refined aluminum ingot for remelting
A technology of element content and digestion solution, which is applied in the field of digestion solution for determining element content in refined aluminum ingots for remelting, can solve problems such as low efficiency and long measurement process time, achieve faster dissolution rate, reduce sample digestion, and test results precise effect
Active Publication Date: 2021-04-20
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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[0004] In view of the above analysis, the present invention aims to provide a digestion solution and method for determining the content of elements in refined aluminum ingots for remelting, so as to solve the problem of long time and low efficiency in the existing determination process of element content in refined aluminum ingots for remelting The problem
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Embodiment 1
[0055] This embodiment provides a digestion solution for determining element content in refined aluminum ingots for remelting, the digestion solution includes: lead standard solution and mixed acid solution.
[0056] Specifically, the sample number of the lead standard solution is GSB 04-1742-2004, the mass concentration of lead in the lead standard solution is 1000 μg / mL, and the medium type is HNO 3 ; Hydrochloric acid in the mixed acid solution: nitric acid: the volume ratio of water is 6:1:7. Wherein, the concentration of hydrochloric acid is 5.2 mol / L, and the concentration of nitric acid is 1.2 mol / L.
[0057] The method for determining the content of elements in refined aluminum ingots for remelting in this embodiment includes:
[0058] S1. Sample pretreatment;
[0059] Put the refined aluminum ingot sample for remelting in a 250mL conical flask, add hydrochloric acid solution (hydrochloric acid: water volume ratio is 1:1) to cover the sample, heat to boil, cool, rins...
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The invention relates to a digestion solution and method for determining the content of elements in a refined aluminum ingot for remelting, belongs to the field of alloy element analysis, and solves the problem of low determination efficiency of the content of the elements in the refined aluminum ingot for remelting in the prior art. The digestion solution comprises a lead standard solution and a mixed acid solution. The method comprises the following steps: pretreating a sample; digesting the sample by using a digestion solution, transferring the digested sample to a volumetric flask, performing diluting and uniform shaking to obtain a sample solution; carrying out a blank test along with the sample, adding a certain amount of a liquid standard substance into the blank test solution, preparing at least three standard solutions in a volumetric flask, fixing the volume, and uniformly performing shaking to form a series of standard solutions; sequentially carrying out spectral intensity measurement on each element in the series of standard solutions by using ICP-OES, selecting proper characteristic spectral lines, and establishing a working curve; measuring the sample solution to obtain the spectral intensity of the related elements in the sample, and calculating the content of the related elements in the sample according to the working curve. According to the invention, the dissolution rate is increased, and the efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of detection of alloy element components, in particular to a digestion solution and a method for determining element content in refined aluminum ingots for remelting. Background technique [0002] The aluminum content of refined aluminum ingots for remelting is generally 99.95% to 99.998%. According to the national standard GB / T8644-2000, the composition requirements of refined aluminum ingots for remelting are (wt%): brand Al99.996: Al not less than 99.996%, Fe not more than 0.001%, Si not more than 0.001%, Cu not more than 0.0015 %, Zn not more than 0.001%, Ti not more than 0.001%; brand Al99.993: Al not less than 99.993%, Fe not more than 0.0015%, Si not more than 0.0013%, Cu not more than 0.003%, Zn not more than 0.001%, Ti No more than 0.001%; grade Al99.99: Al not less than 99.99%, Fe not more than 0.003%, Si not more than 0.003%, Cu not more than 0.005%, Zn not more than 0.002%, Ti not more than ...
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IPC IPC(8): G01N1/28G01N1/44G01N21/73
Inventor 张剑军苏晓文满玉王文静
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP