Assaying method for Ni content in carbon material

A carbon material, measurement and analysis technology, applied in the direction of material analysis by chemical reaction of the material, and material analysis by observing the influence of chemical indicators and other problems, to achieve the effect of wide range of use, short color development time and easy operation

Active Publication Date: 2012-07-11
山东信发华源铝业有限公司
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Problems solved by technology

[0002] At present, there is no unified analysis method for Ni content in carbon materials in the industry, and the processing of samples is somewhat cumbersome
The determination and analysis method of Ni element content in the prior art mainly adopts the principle of atomic emission spectrometry, utilizes the spectrometer and refers to the spectrogram and the analysis mark, carries out self-evaluation to the spectrum emitted by the sample, this method relies too much on the spectrogram on the one hand, If the spectrogram is distorted, it will have a great impact on the results; on the other hand, there are very few matrix lines and element lines for Ni element content, and the corresponding spectral line intensity evaluation ratio cannot be reflected for small changes in element content, making the measurement results big deviation

Method used

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  • Assaying method for Ni content in carbon material
  • Assaying method for Ni content in carbon material
  • Assaying method for Ni content in carbon material

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Embodiment Construction

[0024] The specific embodiment of the present invention will be described in detail below in combination with specific experimental data.

[0025] 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), spectrophotometer, measuring cylinder.

[0026] Configuration of main reagents and samples:

[0027] 1. Anhydrous sodium carbonate.

[0028] 2. Boric acid.

[0029] 3. Hydrochloric acid, 3mol / L.

[0030] 4. Sodium tartrate solution, 100g / ml.

[0031] 5. Sodium hydroxide solution, 100g / ml.

[0032] 6. Ethanol solution of dimethylglyoxime, 10g / ml.

[0033] 7. Ammonium persulfate solution, 50g / ml, ready for immediate use.

[0034] 8. Preparation of sample A: a. Take the measured carbon material sample m 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 c. Put the p...

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Abstract

The invention relates to an assaying method for Ni content in a carbon material. The assaying method is characterized by comprising the steps of: burning the carbon material with anhydrous sodium carbonate or/and boric acid as a flux, carrying out fusion on ash obtained after burning, leaching with a dilute hydrochloric acid solution to obtain a test solution, reacting nickel and dimethylglyoxime in an alkaline medium in the existence of an oxidant to generate a soluble claret complex, and measuring Ni content by colorimetry. The assaying method for Ni content in the carbon material, provided by the invention, is simple in operation method and high in accuracy.

Description

1. Technical field [0001] The invention relates to a method for measuring and analyzing Ni content in carbon materials, in particular to a method for measuring Ni content in carbon materials by using a spectrophotometric method. 2. Background technology [0002] At present, there is no unified analysis method for Ni content in carbon materials in the industry, and the processing of samples is somewhat cumbersome. The determination and analysis method of Ni element content in the prior art mainly adopts the principle of atomic emission spectrometry, utilizes the spectrometer and refers to the spectrogram and the analysis mark, carries out self-evaluation to the spectrum emitted by the sample, this method relies too much on the spectrogram on the one hand, If the spectrogram is distorted, it will have a great impact on the results; on the other hand, there are very few matrix lines and element lines for Ni element content, and the corresponding spectral line intensity evaluati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 吴玉华金汉卿
Owner 山东信发华源铝业有限公司
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