Rapid iodized salt detection liquid

A detection solution and rapid technology, applied in the direction of chemical reaction of materials and material analysis by observing the influence of chemical indicators, etc., can solve the problems of inconvenience to carry, unsuitable for on-site detection, and inconvenient to operate. , to achieve the effect of ensuring sensitivity and stability, wide application range and fast response speed

Active Publication Date: 2013-12-25
HARBIN MEDICAL UNIVERSITY
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Problems solved by technology

Compared with the present invention, the invention patent of on-site rapid quantitative detection reagent and preparation process of iodine content in iodized salt (referred to as invention patent A) is compared with the present invention. Invention patent A is a full quantitative detection, while the present invention is a semi-quantitative detection; It is suitable for on-site detection, but it is inconvenient to carry, because it needs to bring on-site quantitative detection box, balance, sampler, pipette, etc. during the detection, and the operation is not convenient

Method used

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  • Rapid iodized salt detection liquid
  • Rapid iodized salt detection liquid

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 A kind of iodized salt rapid detection liquid, comprises following raw material:

[0030] The concentration of the reducing agent arsenous acid is 0.008g / mL, the concentration of the indicator amylose is 0.004g / mL, the concentration of the preservative zinc chloride is 0.001g / mL, and the concentration of sodium hydroxide is 0.0125g / mL, The pH of the detection solution is adjusted to 1.3 with hydrochloric acid;

[0031] The method for preparing the above-mentioned detection solution comprises the following steps:

[0032] 1 Weigh 50g of sodium hydroxide and dissolve it in 2L of distilled water, then add 32g of arsenous acid;

[0033] 2 Weigh 16g of amylose, stir the amylose with 100mL of distilled water evenly, then add it into 1900mL of boiling distilled water, cook for 10 minutes, add 140mL of hydrochloric acid after cooling, and then add 10g of zinc chloride;

[0034] 3 Mix the two solutions together.

[0035] The method for preparing above-mentioned a...

Embodiment 2

[0044] Embodiment 2 A kind of iodized salt rapid detection solution

[0045] On the basis of Example 1, before each raw material in the iodized salt rapid detection solution is mixed, the mass concentration of the reducing agent arsenous acid is 0.8%, the mass concentration of the indicator amylose is 0.4%, and the preservative zinc chloride The mass concentration of sodium hydroxide is 0.1%, and the mass concentration of sodium hydroxide is 1.25%.

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Abstract

The invention provides rapid iodized salt detection liquid. The rapid iodized salt detection liquid is prepared from the following raw materials: a reducing agent, namely arsenious acid with the concentration of 0.005-0.010g/mL, an indicator, namely amylose with the concentration of 0.002-0.006g/mL, a preservative, namely zinc chloride with the concentration of 0.0005-0.0015g/mL and sodium hydroxide with the concentration of 0.0100-0.0150g/mL; the pH of the detection liquid is 1-1.5. The rapid iodized salt detection liquid provided by the invention is suitable for the detection of iodized salt, the iodine preparation of which is potassium iodate, and iodized salt, the iodine preparation of which is potassium iodide. The rapid iodized salt detection liquid has the advantages that the reducing agent is the arsenious acid, so that the detection speed is relatively rapid; the appropriate pH and the purified amylose are used for preparation, so that the sensitivity and stability of reaction colors are ensured; the zinc chloride is used as the preservative, so that after the rapid iodized salt detection liquid is stored for a long term, the color gradation of the rapid iodized salt detection liquid is still obvious during detection.

Description

technical field [0001] The invention relates to a detection liquid, in particular to an iodized salt rapid detection liquid, and belongs to the field of component detection. Background technique [0002] The on-site detection method for the processing and sales of potassium iodate iodized salt at home and abroad is a semi-quantitative colorimetric method, and the rapid detection kit recommended by the World Health Organization, the United Nations Children's Fund, and the International Council for the Control of Iodine Deficiency Diseases The maximum concentration is 50 or 100mg / kg with an accuracy of ±10mg / kg. The name of the invention is on-site rapid quantitative detection reagent and preparation process of iodine content in iodized table salt, and the invention patent with application number 200810051460.1 discloses an on-site rapid quantitative detection reagent for iodine content in iodized table salt. The raw materials of the reagent include potassium iodide, soluble s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 李德安李延清曹艳红张芳鸣于钧
Owner HARBIN MEDICAL UNIVERSITY
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