Method for determining iron content in ferrovanadium solution by EDTA complexing-hydrogen peroxide chromogenic matrix matching spectrophotometry

A hydrogen peroxide, matrix matching technology, used in the measurement of color/spectral properties, material analysis by observing the effect on chemical indicators, and analysis by chemically reacting materials, etc., to achieve high accuracy, improve sensitivity and Accurate, easy-to-use effects
CN112730292APending Publication Date: 2021-04-30大连融科储能集团股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
大连融科储能集团股份有限公司
Publication Date
2021-04-30

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Abstract

The invention provides a method for determining the iron content in a ferrovanadium solution by EDTA complexing hydrogen peroxide chromogenic matrix matching spectrophotometry. According to the method, EDTA, hydrogen peroxide and iron ions form a chromogenic group under the condition of an alkaline solution, a chromogenic signal is enhanced, the detection sensitivity is improved, interference of vanadium to iron detection is eliminated in a vanadium matrix matching mode, the detection accuracy is improved, accurate and rapid detection of the iron content in the ferrovanadium solution is achieved, and the method is suitable for industrial production; technical problems in the prior art are solved.
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Description

technical field

[0001] The invention relates to iron content determination technology, in particular to a method for determining iron content in ferrovanadium solution by EDTA complexation-hydrogen peroxide chromogenic matrix matching photometry. Background technique

[0002] There are many methods for the determination of iron, including ultraviolet-visible spectrophotometry, redox titration, ICP and so on. Among them: the determination of iron content by potentiometric titration requires the iron to be completely reduced to divalent. This operation control condition is relatively harsh. When there are other redox reaction elements in the solution at the same time, it is more complicated to eliminate interference; the relative error of ICP determination of iron content is relatively large. High, and it is difficult to eliminate interference peaks. Due to low investment in equipment, simple operation, and under the condition of eliminating the influence of interfering eleme...

Claims

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