Method for analyzing and detecting lead impurity element in beryllium-aluminum alloy

A technology of beryllium aluminum alloy and impurity elements, which is applied in the field of analysis and detection of impurity element lead in beryllium aluminum alloy, can solve the problems of low detection sensitivity and interference of lead element, and achieve stable measurement results, high accuracy and good reproducibility Effect

Inactive Publication Date: 2010-12-29
CSIC NO 12 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an analysis and detection method for the impurity element lead in beryllium aluminum alloy, which solves the problem that the existing analysis and detection method is interfered by the matrix and the detection sensitivity of lead element is low

Method used

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  • Method for analyzing and detecting lead impurity element in beryllium-aluminum alloy
  • Method for analyzing and detecting lead impurity element in beryllium-aluminum alloy
  • Method for analyzing and detecting lead impurity element in beryllium-aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Step 1: Prepare lead-containing beryllium aluminum alloy sample solution to be tested

[0052] Weigh 0.5 g of the lead-containing beryllium aluminum alloy sample to be tested and 5 ml of 20% sodium hydroxide solution, place it in a polytetrafluoroethylene plastic beaker, and dissolve it at low temperature. After the lead-containing beryllium aluminum alloy sample to be tested is completely decomposed , add a small amount of 30% hydrogen peroxide dropwise for oxidation, heat and decompose excess hydrogen peroxide after oxidation, cool to obtain a mixed solution, add 30 ml of 50% hydrochloric acid and 10 ml of 50% nitric acid, after acidification Transfer to a glass beaker, heat until the solution is completely clear, transfer it into a volumetric flask after cooling, dilute to 100 ml with water, and shake well to obtain the lead-containing beryllium aluminum alloy sample solution to be tested;

[0053] Step 2: Draw the standard working curve of lead element

[0054] The...

Embodiment 2

[0072] Step 1: Prepare lead-containing beryllium aluminum alloy sample solution to be tested

[0073] Weigh 0.5 g of the lead-containing beryllium aluminum alloy sample to be tested and 10 ml of 20% sodium hydroxide solution, place them in a polytetrafluoroethylene plastic beaker, and dissolve them at low temperature. After the lead-containing beryllium aluminum alloy sample to be tested is completely decomposed , add a small amount of 30% hydrogen peroxide dropwise for oxidation, heat and decompose excess hydrogen peroxide after oxidation, cool to obtain a mixed solution, add 40 ml of 50% hydrochloric acid and 10 ml of 50% nitric acid, after acidification Transfer to a glass beaker, heat until the solution is completely clear, transfer it into a volumetric flask after cooling, dilute to 100 ml with water, and shake well to obtain the lead-containing beryllium aluminum alloy sample solution to be tested;

[0074] Step 2: Draw the standard working curve of lead element

[0075...

Embodiment 3

[0093] Step 1: Prepare lead-containing beryllium aluminum alloy sample solution to be tested

[0094] Weigh 0.5 g of the lead-containing beryllium aluminum alloy sample to be tested and 5 ml of 20% sodium hydroxide solution, place it in a polytetrafluoroethylene plastic beaker, and dissolve it at low temperature. After the lead-containing beryllium aluminum alloy sample to be tested is completely decomposed , add a small amount of 30% hydrogen peroxide dropwise for oxidation, heat and decompose excess hydrogen peroxide after oxidation, cool to obtain a mixed solution, add 30 ml of 50% hydrochloric acid and 10 ml of 50% nitric acid, after acidification Transfer to a glass beaker, heat until the solution is completely clear, transfer it to a volumetric flask after cooling, dilute to 100 ml with water, and shake well to obtain the lead-containing beryllium aluminum alloy sample solution to be tested;

[0095] Step 2: Draw the standard working curve of lead element

[0096] The w...

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Abstract

The invention discloses a method for analyzing and detecting a lead impurity element in beryllium-aluminum alloy, which comprises the following steps of: preparing to-be-detected sample solution of the beryllium-aluminum alloy, drawing a standard working curve of the lead element, enriching and separating the lead element, exciting the enriched and separated to-be-detected sample solution of the beryllium-aluminum alloy on a plasma emission spectrometer, measuring the emission intensity of the lead element, searching the mass concentration rho of the lead element in the beryllium-aluminum alloy standard solution according to the standard working curve of the lead element, and calculating the mass concentration Cx of the lead element in the to-be-detected sample solution of the beryllium-aluminum alloy. The method fills a gap in analysis and detection of the lead impurity element in the beryllium-aluminum alloy material by adopting plasma emission spectrography, has the characteristics of quickness, low interference, good precision, high accuracy and the like, meets the measurement requirement of the lead impurity element in the beryllium-aluminum alloy material, and has stable, consistent and repeatable measurement result.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and in particular relates to an analysis and detection method of impurity element lead in beryllium aluminum alloy. Background technique [0002] Among the existing chemical analysis methods for beryllium-containing materials, there are only chemical analysis methods for elements in beryllium copper and beryllium nickel materials with low beryllium content (<5%), and analysis methods for impurity elements in pure beryllium. There is currently no corresponding method for the analysis of lead as an impurity element in beryllium aluminum alloy materials (containing beryllium ≈ 60%). For beryllium aluminum alloy materials, it is a different matrix from beryllium copper, beryllium nickel and pure beryllium materials. In terms of analysis methods Cannot be used universally. As an impurity component in beryllium-aluminum alloy, lead element has obvious influence on the material proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
Inventor 王洁杨希文张兴荣
Owner CSIC NO 12 RES INST
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