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Method for improving iodine chromogenic sensitivity

A sensitive, solid iodine technology, applied in the field of color reaction, can solve the problems of great influence of solid iodine, uneven color development of iodine, fast volatilization, etc., and achieve the effects of reducing chemical hazards, uniform color development, and uniform volatilization.

Inactive Publication Date: 2017-01-04
SHANGHAI ATOM KEXING PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the volatilization of solid iodine is greatly affected by temperature, it volatilizes slowly when the temperature is low, and volatilizes quickly when the temperature is high, which will cause uneven color development of iodine, thus affecting the judgment of the result.

Method used

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Examples

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Embodiment 1

[0017] A method for improving the color sensitivity of iodine, the method comprises the following steps: putting solid iodine into a small container and then into a closed container, putting into a chromatographic plate, and avoiding that the put chromatographic plate is directly contacted with the solid iodine In addition, add a small glass of water to increase the humidity in the airtight container, which can improve the sensitivity of color development and make the color development of the sample uniform.

[0018] The small container is a petri dish with a diameter of 90 mm, and the volume ratio of the iodine to the small beaker is 1:1, that is, the iodine is spread in the small petri dish. The volume ratio of the small container to the airtight container is 1:50, and the humidity of the airtight container is controlled to be 70-80%. The volume ratio of the water volume in the small cup of water to the container is: 1:30. The airtight container is irradiated under an infra...

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Abstract

The invention relates to a method for improving iodine chromogenic sensitivity. The method comprises putting solid iodine into a small container, putting the small container into an enclosed container, putting a chromatography plate into the enclosed container, wherein the chromatography plate does not directly contact with solid iodine, and adding a small cup of water into the enclosed container to improve humidity in the enclosed container. The method improves chromogenic sensitivity and realizes uniform sample color development. Compared with the prior art, the method provided by the invention improves iodine steam chromogenic sensitivity, realizes uniform sample color development, reduces an iodine use amount and reduces chemical damage to people.

Description

technical field [0001] The invention relates to a color reaction, in particular to a method for improving the color sensitivity of iodine. Background technique [0002] The principle of iodine color development: Most organic compounds can show yellow-yellow-brown spots when they encounter iodine vapor. In the process of iodine color development, color is developed by combining iodine vapor molecules with compounds. Iodine dissolves in the compound to be measured, or undergoes an addition reaction with the compound, and the compound absorbs iodine to develop color. Iodine color development is more uniform and delicate than general color development solution spray color development. Therefore, iodine vapor color development is more intuitive and accurate for qualitative and quantitative detection of thin layer chromatography. [0003] General iodine color development method: put solid iodine in a closed container or desiccator, wait until the iodine vapor is saturated, put ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 赵瑜
Owner SHANGHAI ATOM KEXING PHARMA
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