Method for detecting strontium content in magnesium-strontium intermediate alloy by flame atomic absorption spectrometry

A technology of flame atomic absorption and master alloy, which is applied in the measurement of color/spectral characteristics, etc., can solve the problem of less detection technology for strontium content, and achieve the effect of accurate and reliable test results and simple methods

Inactive Publication Date: 2009-04-01
CHANGAN AUTOMOBILE (GRP) CO LTD
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Problems solved by technology

However, there are few domestic and foreign researches on the detection technology for the determination of strontium content in magnesium-strontium master alloys.

Method used

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  • Method for detecting strontium content in magnesium-strontium intermediate alloy by flame atomic absorption spectrometry
  • Method for detecting strontium content in magnesium-strontium intermediate alloy by flame atomic absorption spectrometry
  • Method for detecting strontium content in magnesium-strontium intermediate alloy by flame atomic absorption spectrometry

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Experimental program
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Embodiment Construction

[0012] 1. Instruments and reagents

[0013] WYX-9004 atomic absorption spectrophotometer (Shenyang Analytical Instrument Factory), with a strontium hollow cathode lamp.

[0014] Other general laboratory instruments.

[0015] Magnesium standard solution: 1.000mg / mL. Weigh 1.0000g (99.999%) of pure magnesium into a 150mL Erlenmeyer flask, add 20mL (1+1) HCl in portions, after dissolution is complete, transfer to a 1000mL volumetric flask, dilute to the mark with distilled water, and shake well.

[0016] Aluminum standard storage solution: 10.000mg / mL. Weigh 10.0000g of pure aluminum (99.99%, no strontium) into a 500mL tall beaker, add 250mL (1+1) HCl in portions, after the dissolution is complete, transfer to a 1000mL volumetric flask, dilute to the mark with distilled water, shake well .

[0017] Aluminum standard solution: 1.000mg / mL. Pipette 100mL aluminum standard stock solution into a 1000mL volumetric flask, dilute to the mark with distilled water, and shake well.

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Abstract

The invention provides a method used for measuring the content of strontium in Mg-Sr preliminary alloy by a flame atomic absorption spectrometry; the method adopts the flame atomic absorption spectrometry to measure the content of the strontium in the Mg-Sr preliminary alloy and comprises the steps as follows: a sample is placed in a conical bottle and distilled water is added in the conical bottle; subsequently, hydrochloric acid solution and hydrogen peroxide are added; after the sample is completely dissolved, the solution is cooled and transferred to a volumetric flask, diluted to a calibration and uniformly mixed; the sample is measured under the working condition of an atomic absorption spectrophotometer; the content of the strontium is queried on the working curve of the strontium; and simultaneously, a recovery test is carried out by a recovery rate testing method. The method can detect the content of the strontium in the Mg-Sr preliminary alloy and provide the judgment basis for exactly measuring the content of strontium in the Mg-Sr preliminary alloy.

Description

technical field [0001] The invention relates to a general detection technology, especially capable of measuring the amount of strontium in a magnesium-strontium master alloy by using flame atomic absorption spectrometry. Background technique [0002] At present, the national standard for the determination of strontium in aluminum alloys is GB / T 6987.28-2001, but there is no unified national standard or industry standard for the determination of strontium in other alloys. Sometimes the purpose of determining strontium is also achieved by measuring strontium-containing compounds. For example, SJ / T 10895-1996 measures strontium oxide in electronic glass, DIN 51083 P11 measures strontium oxide in aluminate, and GB10304.4-1988 measures strontium oxide in aluminate. Determination of strontium carbonate in salt. At the same time, due to the limitations of technical level and capital, the detection level of our country and foreign counterparts is quite different. For example, the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 李启华马英樊朝英
Owner CHANGAN AUTOMOBILE (GRP) CO LTD
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