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Method for measuring and analyzing Fe content of carbon material

A carbon material, determination and analysis technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of complex composition of iron oxide, great difference in results, and many affected factors, and achieve short color development time, easy operation, and easy to use wide range of effects

Inactive Publication Date: 2012-07-04
SNTO TECH GRP
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Problems solved by technology

Visible spectrophotometry is used to measure the iron content in carbon materials. First, the iron must be separated. At present, the oxalic acid-ammonium oxalate method is mainly used to extract iron. However, iron exists in different forms in different carbon materials, and the composition of iron oxide is complex. Oxalic acid - The ammonium oxalate method is affected by many factors, resulting in large differences in results and low accuracy

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  • Method for measuring and analyzing Fe content of carbon material

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Embodiment Construction

[0022] The specific embodiment of the present invention will be described in detail below in combination with specific experimental data.

[0023] Instruments and equipment that the present invention needs to use: disc mill, high temperature furnace, balance (0.1mg), porcelain boat, platinum crucible (with cover, 30ml).

[0024] Configuration of main reagents and samples:

[0025] 1. Anhydrous sodium carbonate.

[0026] 2. Boric acid.

[0027] 3. Hydrochloric acid, 3mol / L.

[0028] 4. Hydroxylamine hydrochloride solution, 1%.

[0029] 5. O-phenanthroline solution, 0.25%.

[0030] 6. Preparation of sample A: a. Take the measured carbon material sample in a disc grinding bowl and grind it into powder; b. Accurately weigh 2.0000g (m) of the air-dried ground sample and put it in a porcelain boat , spread flat; c. Put the porcelain boat on the porcelain boat rack, put the rack on the furnace mouth of the high-temperature box-type furnace, leave a gap for the air in the furnace...

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Abstract

The invention discloses a method for measuring and analyzing Fe content of a carbon material. The method is characterized by comprising the following steps of: melting the carbon material by using anhydrous sodium carbonate or / and boracic acid as a melting agent, extracting the sample by using a diluted hydrochloric acid solution, reducing Fe (III) in the sample into Fe (II) by using hydroxylamine hydrochloride, regulating the pH value, adding a color development agent, and analyzing and determining the Fe content by using a colorimetric method. The method for measuring and analyzing the Fe content of the carbon material is easy to operate and high in accuracy.

Description

1. Technical field [0001] The invention relates to a method for measuring and analyzing Fe content in carbon materials, in particular to a method for measuring Fe content in carbon materials by using a spectrophotometric method. 2. Background technology [0002] At present, the determination of iron content in carbon materials mainly uses visible spectrophotometry. Visible spectrophotometry is used to measure the iron content in carbon materials. First, the iron must be separated. At present, the oxalic acid-ammonium oxalate method is mainly used to extract iron. However, iron exists in different forms in different carbon materials, and the composition of iron oxide is complex. Oxalic acid - The ammonium oxalate method is affected by many factors, resulting in large differences in results and low accuracy. Therefore, it is an urgent need for the industry to invent a high-accuracy, simple-to-operate Fe content determination and analysis method. 3. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27
Inventor 吴玉华金汉卿
Owner SNTO TECH GRP
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