Method for detecting ferric iron content in powder material

A powder material and detection method technology, applied in the detection field, can solve problems such as poor accuracy, lack of uniform standards, strong subjectivity, etc., and achieve the effects of improving accuracy, fast detection speed, and low environmental requirements

Inactive Publication Date: 2006-08-02
CHINA AGRI UNIV
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Problems solved by technology

This method is simple and fast, but has poor accuracy, strong subjectivity, and lack of uniform standards

Method used

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Embodiment Construction

[0013] The invention proposes a method for detecting the content of ferric iron in powder materials based on computer chromaticity identification, aiming at the limitation of the prior art. The detection method of ferric iron content in the powder material comprises the following steps:

[0014] Step 1, prepare the reagent required for the color reaction, the reagent is prepared by mixing 2M hydrochloric acid and 10wt% potassium thiocyanate solution in a volume ratio of 1:1;

[0015] Step 2, prepare a standard sample with known ferric content, add 10, 20, 30, 40, 50 mg / kg of ferric fortifier to the samples that have not been strengthened with iron and whose inherent iron content has been measured, respectively. The iron content of the sample is the sum of the inherent iron content in the sample and the amount of added iron. Mix carefully to obtain a standard sample with known iron content; the ferric iron fortifiers are: NaFeEDTA, ferric ammonium citrate or iron pyrophosphate;...

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Abstract

The present invention relates to a semiquantitative detection method of ferric content in powder material. Said method includes the following steps: firstly, preparing various reagents required for developing color; respectively preparing standard sample and sample to be detected; then collecting original image information of developed standard sample and sample to be detected; comparing chromatic values of them to obtain ferric content range of sample.

Description

technical field [0001] The invention belongs to the technical field of detection, in particular to a method for detecting the content of ferric iron in powder materials based on computer chromaticity identification. Background technique [0002] Iron deficiency is a worldwide nutritional disorder, especially in developing countries. In my country, iron deficiency is also common. In order to solve this problem, following the addition of iodine to salt and iron to soy sauce, the Chinese government has taken another measure to fortify iron in flour. It is worth noting that excessive iron intake can also cause superoxidative damage and cause cardiovascular disease, so its content needs to be monitored. At present, the quantitative detection methods of iron in flour mainly include atomic absorption spectrometry and spectrophotometry. Atomic absorption method has long sample processing time, expensive equipment, high detection cost, and is not easy to popularize. However, usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/31
Inventor 侯彩云王小伟冯婧耿然
Owner CHINA AGRI UNIV
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