Analyzing and detecting method for content of microelements in dedicated ferric oxide powder standard sample

A medium and trace element technology, which is applied in the preparation of test samples, thermal excitation analysis, material excitation analysis, etc., can solve the problems of cumbersome operation, influence on Na ion measurement results, low work efficiency, etc., and achieve the goal of improving efficiency Effect

Inactive Publication Date: 2014-05-07
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Problems solved by technology

This method has two major defects: 1. 14 element standard solutions must be added to the pure iron oxide powder sample solution for each operation, which is cumbersome and inefficient.
2. Due to the influence of the matrix in the standard solution, for example, the

Method used

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Embodiment Construction

[0011] The analysis detection method of trace element content in the special iron oxide powder standard sample of the present invention comprises the following steps:

[0012] Step 1. Take low-quality iron oxide powder as a sample, and control the content of each trace element in the sample. The mass content of each trace element in the sample is respectively controlled as B: 0.0005-0.003%, Mg: 0.005-0.03%, and Al: 0.005-0.03%, Si: 0.005-0.03%, SO 4 2- : 0.05-0.3%, Ca: 0.005-0.03%, Mn: 0.05-0.3%, Ti: 0.0005-0.003%, Na: 0.005-0.03%, K: 0.0005-0.003%, P: 0.005-0.03%, Ni: 0.005-0.03%, Cr: 0.005-0.03%, Cu: 0.005-0.03%;

[0013] Step 2. Accurately weigh 1.000 grams of sample, transfer it into a 150 mL quartz beaker, add 10 mL of concentrated hydrochloric acid, cover it with a watch glass, and heat it at 80-100 ° C to dissolve it. After the sample is completely dissolved, transfer it to a 100 mL volumetric flask and dilute with high-purity water To the full scale, the sample solu...

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Abstract

The invention discloses an analyzing and detecting method for the content of microelements in a dedicated ferric oxide powder standard sample. The method comprises the following steps: taking low-quality ferric oxide powder as the sample, and controlling the content of each microelement in the sample; accurately weighing the sample, adding concentrated hydrochloric acid, heating to dissolve, removing into a volumetric flask, and diluting with water so as to obtain a sample liquid; weighing 5 parts of high-purity iron powder, adding concentrated hydrochloric acid, heating to dissolve, respectively removing into five volumetric flasks, respectively adding a standard solution of each microelement according to different amount into the five volumetric flasks, diluting with water, agitating uniformly, and respectively carrying out spectral line intensity measurement on each microelement so as to obtain a working curve; uniformly mixing the sample liquid and measuring the line strength of each microelement, and obtaining the content of each microelement in the sample through the working curve. The content of each microelement in the ferric oxide powder standard sample, obtained by the method, satisfies the requirement of the microelement analysis and detection in the ferric oxide powder, and the method can be used for performing quality control in ferric oxide powder analysis and detection and used for evaluating and revising detecting instruments, and effectively improves the efficiency of analysis and detection.

Description

technical field [0001] The invention relates to an analysis and detection method for trace element content in a standard sample of special iron oxide powder. Background technique [0002] The metallurgical industry is very important to the analysis and detection of iron oxide powder. It usually uses inductively coupled plasma emission spectrometer (ICP-AES) to implement analysis and detection operations to evaluate the quality of iron oxide powder and detect the content of trace elements in it; while oxidation The iron powder standard sample is the reference standard in the detection of iron oxide powder, which can be used for the calibration of testing instruments and the supervision of the quality of iron oxide powder. At present, ICP-AES is used to detect the content of 14 trace elements in iron oxide powder, but there is a lack of standard samples of iron oxide powder containing 14 trace elements. Therefore, in the analysis of iron oxide powder and the detection of trace...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/38
Inventor 陈国明姜宝宇
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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