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Sulfur dioxide rapid detection reagent tube and detection method thereof

A technology for sulfur dioxide and detection reagents, which can be used in chemical instruments and methods, material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials. Stability, test result error and other problems, to achieve the effect of stable test results, exquisite and unique design, safe and reliable use

Active Publication Date: 2015-04-08
南昌富泰力诺检测应用系统有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why vendors are so bold in producing toxic food with excessive sulfur dioxide is mainly because the detection methods of law enforcement agencies are too backward to quickly detect sulfur dioxide in food on a large scale
The traditional pararosaniline hydrochloride colorimetric method has cumbersome operation, low sensitivity, unstable color development system, and poor reproducibility, which often lead to large errors in detection results

Method used

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  • Sulfur dioxide rapid detection reagent tube and detection method thereof
  • Sulfur dioxide rapid detection reagent tube and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the solution is as follows:

[0027] Solution A: Formaldehyde 40mL + 1-ethyl-3-methylimidazole bistrifluoromethanesulfonimide salt 0.5mL, add water to make up to 1000mL.

[0028] Solution B: pararosaniline hydrochloride 0.5g + hydrochloric acid 100mL, add water to make up to 1000mL.

[0029] Such as figure 1 As shown, a detection reagent tube includes: a reagent cup and a reaction cup, the reagent cup and the reaction cup are connected by a plastic belt, and the reagent cup is divided into two chambers, chamber 1 is filled with 500uL of solution A, and chamber 2 is filled with 500uL of solution B , chamber 1 and chamber 2 are sealed by aluminum foil, the size of the bottom opening of the reagent cup is smaller than or equal to the size of the top opening of the reaction cup, so that the lower end of the reagent cup can be inserted into the inner cavity of the reaction cup, and the lower end of the reagent packaging cup can be inserted into the...

Embodiment 2

[0031] Production of sulfur dioxide detection standard color card:

[0032] Take 12 detection reagent tubes prepared in Example 1, add 0.0, 0.1, 0.2, 0.5, 1.0, 2.0, 4.0, 8.0, 12.0, 16.0, 20.0, 32.0 mg / kg sulfur dioxide standard solution 3.0 mL into the reaction cup respectively . Put the reagent cup upside down into the reaction cup, press down firmly, the puncture needle will pierce the reagent sealing aluminum foil, and the reagent will flow into the reaction cup. Mix evenly by blowing and sucking, and let it stand at room temperature for 5 minutes to make a standard color card for sulfur dioxide detection.

Embodiment 4

[0041] The preparation method of the solution is as follows:

[0042] Solution A: Formaldehyde 50mL + 1-ethyl-3-methylimidazole bistrifluoromethanesulfonimide salt 2mL, add water to make up to 1000mL.

[0043] Solution B: pararosaniline hydrochloride 2g + hydrochloric acid 200mL, add water to make up to 1000mL.

[0044] The chamber 1 of the detection reagent tube is filled with 500 uL of solution A, and the chamber 2 is filled with 500 uL of solution B to obtain a detection reagent tube.

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Abstract

The invention provides a detection reagent tube which is integrated, has good reagent sealing performance, is convenient to transport, continuously and rapidly combines the steps of multi-component reagent sampling, reaction, color comparison and the like, is safe, convenient, accurate and rapid. The detection reagent tube comprises a reagent cup and a reaction cup, wherein the reagent cup is connected with the reaction cup by a plastic tape; the reagent cup is divided into two cavities; the cavity 1 is internally filled with 500 microliters of solution A and the cavity 2 is internally filled with 500 microliters of solution B; the cavity 1 and the cavity 2 are sealed by an aluminum foil; the size of an opening formed in the bottom of a reagent packaging cup is smaller than or equal to the size of an opening formed in the top of a reaction colorimetric cuvette; the reaction cup is internally provided with two pricking needles; and the two pricking needles correspond to the cavity 1 and the cavity 2 of the reagent cup respectively. By virtue of the detection reagent tube, the limitation of a traditional laboratory detection instrument that the volume is large, the cost is high and an analysis method is complicated is effectively overcome, and the rapid detection requirements of supervision law-enforcing departments including quality supervision, industry and commerce, agriculture, sanitation and the like, and units including wholesale markets, supermarkets, restaurants, hotels and the like are met.

Description

technical field [0001] The invention relates to a detection reagent tube and a detection method for sulfur dioxide content, in particular to a rapid detection reagent tube for sulfur dioxide content and a detection method for sulfur dioxide in food. Background technique [0002] In the process of food production and processing, in order to keep the food with its unique color, manufacturers often add color control components such as bleaching agent, relying on its oxidation or reduction ability to inhibit and destroy the discoloration factor of food, so that food fades or fades. Free from browning. In my country's food industry, sulfur dioxide and sulfite are the most commonly used components. These components have a certain corrosive effect, and excessive use in food will affect human health. Especially sulfur dioxide, it is an effective bleaching and antiseptic effect on food. It is a bleaching agent and preservative commonly used in food processing. However, excessive use...

Claims

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Application Information

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IPC IPC(8): B01L3/14G01N21/78
Inventor 张鸿孙珽铨曾建华
Owner 南昌富泰力诺检测应用系统有限公司
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