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Analysis detection method of iron element in vanadium carbide

A detection method, iron element technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as unsuitable spectrophotometric measurement, achieve stable results, eliminate interference, and good method reproducibility

Inactive Publication Date: 2013-02-06
长沙伟徽高科技新材料有限公司
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Problems solved by technology

[0003] In the analysis and detection methods of low-content iron elements, spectrophotometry and atomic absorption spectrophotometry are generally used, but the main element of vanadium carbide is vanadium, and the vanadium ion is dark green, so it is not suitable for spectrophotometry.

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  • Analysis detection method of iron element in vanadium carbide
  • Analysis detection method of iron element in vanadium carbide

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1: Determination of iron in vanadium carbide

[0038] To formulate a working curve or establish a linear equation:

[0039] a. Prepare iron standard solution with mass concentration of 0.100mg / mL: weigh 0.1000g of high-purity metal iron powder (ω 铁 ≥99.95%) in a 250mL beaker, add 40mL of nitric acid (volume concentration of 50%), heat at low temperature until completely dissolved, remove and cool, rinse the wall of the beaker with water, transfer it to a 1000mL volumetric flask, dilute with water to the mark, and mix well.

[0040] To prepare a vanadium matrix solution with a mass concentration of 8.1g / L: weigh 9.3g of ammonium metavanadate (ω 偏钒酸铵 ≥99.95%) in a 300mL beaker, add 40mL of nitric acid (volume concentration of 50%), heat at low temperature until completely dissolved, remove and cool, rinse the wall of the beaker with water, transfer it to a 500mL volumetric flask, dilute with water to the mark, and mix well.

[0041] b. The specific operation p...

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Abstract

The invention belongs to the field of analysis on difficulty-smelted compounds and discloses an analysis detection method of an iron element in vanadium carbide. The analysis method comprises the following analysis steps of: heating a sample by a nitric acid water solution to be dissolved; carrying out dry filtering on free carbon of an insoluble substance in the sample; preparing an iron standard solution and utilizing a substrate matching method to eliminate the inference on iron by vanadium; utilizing an atom absorption spectroscopy to measure the absorption value of an iron-based state atom; and calculating an analysis result according to a standard curve. The analysis detection method of the iron element in the vanadium carbide has the advantages of high sensitivity, simplicity and convenience for operation, and good reproducibility of the analysis result, and is suitable for measuring the iron content in the vanadium carbide.

Description

technical field [0001] The invention belongs to the analysis field of refractory compounds, and in particular relates to an analysis and detection method for iron elements in vanadium carbide. Background technique [0002] As a cemented carbide additive, vanadium carbide can effectively improve the properties of the alloy and increase the strength of the cemented carbide. There is currently no corresponding analysis method for the analysis of iron content in vanadium carbide. [0003] In the analysis and detection methods of low-content iron elements, spectrophotometry and atomic absorption spectrophotometry are generally used, but the main element of vanadium carbide is vanadium, and vanadium ions are dark green, so spectrophotometry is not suitable for determination. How to apply atomic absorption spectroscopy to the analysis and detection of iron in vanadium carbide is the purpose of the present invention. Contents of the invention [0004] The present invention aims ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 周学峰袁桂钦裘立奋
Owner 长沙伟徽高科技新材料有限公司
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