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Nitrite powder detection reagent and preparation method thereof

A technology for detecting reagents and nitrite, which is applied in the direction of material analysis by observing the influence on chemical indicators, and analysis by making materials undergo chemical reactions, etc. Problems such as carrying and transportation, to achieve the effect of facilitating carrying and transportation, improving detection sensitivity, and facilitating transportation

Inactive Publication Date: 2018-07-20
云南商测质量检验技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both types still have problems to varying degrees. The sensitivity of the detection test paper is relatively low, the uneven amount of reagent adsorbed by the test paper leads to uneven color development after the reaction, and the detection repeatability is poor, which is not conducive to the interpretation of the results.
The operation of the detection kit is cumbersome, and the reagents in the box are basically liquid reagents, which are not conducive to carrying and transportation, and are not easy to store

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A nitrite powder detection reagent, consisting of the following reagents in parts by mass: 60 parts of sodium chloride, 2 parts of p-aminobenzenesulfonic acid, 3 parts of N-1-naphthylethylenediamine hydrochloride, sodium benzoate 1 part, vitamin C 1 part, tea polyphenols 1 part.

[0018] Weigh the above-mentioned reagents in parts by mass, place them in a mortar, grind and mix them repeatedly until they are uniform, and then obtain the nitrite powder detection reagent.

[0019] When in use, take 2ml of the prepared sample solution, add 1 / 2 of the above-prepared nitrite powder detection preparation, shake well, observe the color depth change after 30 seconds, and interpret the result.

Embodiment 2

[0021] A nitrite powder detection reagent, consisting of the following reagents in parts by mass: 70 parts of sodium chloride, 2.5 parts of p-aminobenzenesulfonic acid, 3.5 parts of N-1-naphthylethylenediamine hydrochloride, sodium benzoate 1.5 parts, vitamin C 1 part, tea polyphenols 2 parts.

[0022] The preparation method is the same as in Example 1.

[0023] When in use, take 4ml of the prepared sample solution, add the above-prepared nitrite powder detection preparation, shake well, observe the color depth change after 60 seconds, and interpret the result.

Embodiment 3

[0025] A nitrite powder detection reagent, consisting of the following reagents in parts by mass: 80 parts of sodium chloride, 4 parts of p-aminobenzenesulfonic acid, 5 parts of N-1-naphthylethylenediamine hydrochloride, sodium benzoate 2 parts, vitamin C 1.2 parts, tea polyphenols 2 parts.

[0026] The preparation method is the same as in Example 1.

[0027] When in use, take 5ml of the prepared sample solution, add 2 parts of the above prepared nitrite powder detection preparation, shake well, observe the color depth change after 90 seconds, and interpret the result.

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PUM

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Abstract

The invention discloses a nitrite powder detection reagent and a preparation method thereof and belongs to the field of food and water quality detection. The detection reagent is prepared from components in parts by mass as follows: 50-100 parts of sodium chloride, 1-6 parts of sulfanilic acid, 2-8 parts of N-(1-naphthyl)ethylenediamine dihydrochloride, 0.5-4 parts of sodium benzoate, 0.5-2 partsof vitamin C and 1-5 parts of tea polyphenol. The nitrite powder detection reagent can detect nitrite in food and water conveniently, rapidly and accurately, is simple to operate during using and hashigh reaction sensitivity.

Description

technical field [0001] The invention belongs to the field of food and water quality detection, and relates to a nitrite powder detection reagent and a preparation method thereof. Background technique [0002] Nitrite is a good coloring agent and preservative, which can effectively increase the color of food, so it is widely used in food processing, but the probability of food poisoning caused by nitrite is relatively high. Nitrate can oxidize the normal oxygen-carrying low-iron hemoglobin in the blood to methemoglobin, thus losing the oxygen-carrying capacity and causing tissue hypoxia. Symptoms include cyanosis of the lips, tongue tip, and fingertips. In severe cases, cyanosis of the conjunctiva, face, and body skin . Dizziness, headache, fatigue, rapid heartbeat, drowsiness or irritability, difficulty breathing, nausea, vomiting, abdominal pain, diarrhea, etc. [0003] At present, the detection methods of nitrite in food mainly include flow injection method, polarographi...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 李丽蓉李美芬周从燕晏龙孙绍龙
Owner 云南商测质量检验技术服务有限公司
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