Fast qualitative test agent for salt and common industrial salt and its production principle
A testing agent and qualitative detection technology, applied in material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve problems such as harming consumers, iodine deficiency diseases, food poisoning, etc. To achieve the effect of simple and practical operation, good use prospects, and convenient detection
Inactive Publication Date: 2011-11-16
曹恒
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Problems solved by technology
[0003] Now some unscrupulous traders use non-iodized salt or even industrial salt and other fake iodized salt to sell in the market, making illegal profits and defrauding consumers, which has caused some adverse consequences such as food poisoning and iodine deficiency diseases, especially in rural areas
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[0019] Take the production of 105ml of the test reagent as an example:
[0020] 1. Take 3g of soluble starch, add it to 100ml of distilled water at 70°C, stir well, keep the temperature for 5 minutes, let stand, and take the clear liquid to obtain the amylose solution.
[0021] 2. Take 3 g of soluble starch and add it to 100 ml of distilled water at 80° C. The operation is the same as in Example 1.
[0022] 3. Take 5 g of soluble starch and add it to 100 ml of distilled water at 70° C. The operation is the same as in Example 1.
[0023] 4. Take 5 g of soluble starch and add it to 100 ml of distilled water at 80° C. The operation is the same as in Example 1.
[0024] 5. Take 100ml of 2mol / l HCl solution, add 6.2g of iron powder, fully react at room temperature until no bubbles are formed, stand still and take emerald green solution to obtain the reducing agent.
[0025] 6. Take 100 ml of 3 mol / l HCl solution, add 9.0 g of iron powder, the operation is the same as in Example 5...
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The present invention provides an agent for rapid qualitative test of common salt and common industrial salt, and a manufacturing principle thereof. The agent mainly consists of a reducing agent and an amylase solution. With the changes in colors of iodine-starch and ferrous ion used for producing a colorimetric card, the agent can verify very quickly whether common salt for sale on the market is the formal KIO3 contained-iodized salt as specified by the state through quantitative test, and at the same time can also determine rapidly the properties of partial industrial salt, such as sulfite, nitrite and nitrate. The operation is simple and convenient, that is, the judgment can be made by changes in colors for 0.5-3 minutes after adding drops of the testing agent onto salt particles to be tested. For sale together with common salt, the agent which is of high use value can be separated and packed in a small bottle, thereby facilitating public examination. In addition, the agent can help salt policy enforcement inspectors conduct rapid quantitative tests on salt on the market. The agent plays an important role in cleansing the iodized salt market, cracking down on illegal salt market, and preventing merchants from defrauding the public by substituting industrial salt for iodized salt, and has a good prospect of utilization.
Description
technical field [0001] The invention relates to a chemical mixture for qualitative detection of salts and its production principle, especially for edible iodized salt and common industrial salt: sodium nitrite (potassium, etc.), sodium nitrate (potassium, etc.), sodium sulfite (potassium, etc.), Chloride and sulfate without iodine for qualitative detection. Background technique [0002] Iodine deficiency is currently our government has attached great importance to. Although people have a certain understanding of goiter, but more importantly, iodine deficiency affects the quality of the next generation of population. A large number of research data show that iodine deficiency during pregnancy will affect the brain development of the fetus. Iodine deficiency during fetal development, the part of the cerebral cortex in charge of language, hearing and intelligence cannot be fully differentiated and developed. The consumption of industrial salt by people will cause more seriou...
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IPC IPC(8): G01N21/78
Inventor 曹恒
Owner 曹恒