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Graphite furnace atomic absorption spectrometry for determining content of trace elements in GH4169

A GH4169, graphite furnace atomic technology, applied in the field of graphite furnace atomic absorption spectrometry, can solve the problems of time-consuming, poisonous organic reagents, complicated operation, etc., and achieve the effects of high accuracy, low detection cost and simple measurement process

Inactive Publication Date: 2019-11-22
中航金属材料理化检测科技有限公司
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Problems solved by technology

GJB5404-2005 is an analysis method for trace elements in superalloys. Parts 10 and 15 are graphite furnace atomic absorption spectrometry. This method is a classic analysis method, but because the operation is extremely complicated and time-consuming, it is harmful to the human body. Poisonous organic reagents are not easy to be popularized and used in daily production

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  • Graphite furnace atomic absorption spectrometry for determining content of trace elements in GH4169
  • Graphite furnace atomic absorption spectrometry for determining content of trace elements in GH4169
  • Graphite furnace atomic absorption spectrometry for determining content of trace elements in GH4169

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The invention provides a graphite furnace atomic absorption spectrometry method for measuring trace element content in GH4169, which is specifically implemented according to the following steps:

[0026] Step 1, weigh 0.1gGH4169 sample and place it in a polytetrafluoroethylene beaker;

[0027] Step 2, add 5ml of nitric acid with a mass concentration of 16.25-17% and 0.7ml of hydrofluoric acid with a mass concentration of not less than 40% to the beaker described in step 1, shake well, cover the beaker, and place the beaker on a low-temperature electric furnace Heating, the heating temperature is 150 ° C ~ 200 ° C, after the sample is completely dissolved, take off the lid and continue heating for 10 min ~ 12 min, turn along the beaker wall and add water, continue heating and dissolving the beaker, wait until the solution in the beaker ...

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Abstract

The invention discloses graphite furnace atomic absorption spectrometry for determining the content of trace elements in GH4169, which is characterized by specifically comprising the following steps:1, a GH4169 sample is weighed and placed in a beaker; 2, nitric acid and hydrofluoric acid are added to the beaker in the first step, the beaker is heated to dissolve the sample, a test solution is obtained, and the test solution is subjected to standing and cooling; and 3, the test solution obtained in the second step is subjected to absorbance measurement, the content of trace elements in the GH4169 sample is obtained, and drawing of a standard curve is carried out. According to the method disclosed by the invention, the test solution is simple to prepare, the operability is strong, the testresult accuracy is high, the service life of a graphite tube can be prolonged, and the damage to the furnace end of the graphite furnace is reduced.

Description

technical field [0001] The invention belongs to the technical field of trace element analysis, and relates to a graphite furnace atomic absorption spectrometry for measuring the content of trace elements in GH4169. Background technique [0002] With the development of material science, the control of material technical performance is particularly important. The content of each element in metal materials directly determines its performance, so higher requirements are put forward for metallurgical analysis, and the analysis of trace elements in complex systems is a major problem facing metallurgical analysis in the 21st century. The composition of the superalloy is extremely complex, and the mutual interference between elements is serious. The residual amount of elements such as lead, tin, bismuth, silver, antimony, thallium and selenium in GH4169 is very small, but it has a great influence on the performance of the alloy, especially the alloy Therefore, it is of great signif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/28
CPCG01N1/28G01N21/3103
Inventor 赵娟红
Owner 中航金属材料理化检测科技有限公司
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