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Benzoyl peroxide test paper and preparation method and detection method thereof

A technology of benzoyl peroxide and detection test paper, which is applied in the direction of chemical reaction of materials and material analysis by observing the influence of chemical indicators. Technical personnel and other problems, to achieve the effect of low detection cost, prolonged storage time, and shortened reaction time

Active Publication Date: 2018-11-13
BEIJING PRIMEBIOTEK COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have the advantages of high detection accuracy, low detection limit, and good repeatability, there are also problems such as cumbersome and time-consuming sample pretreatment steps, expensive detection instruments, long detection cycle, high cost, and excessive reliance on professional and technical personnel. It is conducive to the large-scale preliminary screening of the grassroots quality inspection department, which is not conducive to the rapid detection on the spot
[0003] And though the kit colorimetric method and test paper method existing at present are more convenient than the above-mentioned method, there are still many problems, such as authorization announcement number is CN102323258B, the name is a kind of detection test paper for detecting benzoyl peroxide in flour And preparation method thereof, it adopts starch-potassium iodide test paper, and the detection limit of flour sample is 36mg / kg, and detection limit is too high, and sensitivity is low, and the 28th announcement of AQSIQ in 2011: since May 1, 2011 Since then, it is forbidden to add benzoyl peroxide in flour production; in addition, the current test paper or kit detection methods need to be improved in terms of operation convenience, accuracy, reaction time, detection cost, and storage time

Method used

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  • Benzoyl peroxide test paper and preparation method and detection method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1.1 Benzoyl peroxide detection test paper and its preparation

[0037] 1) The mass concentration of the preparation is 0.3g / L of thio-Michler's ketone, 0.2g / L of Tween-80, 1g / L of 3,3,5,5-tetramethylbenzidine, and methyl vinyl ether-maleic anhydride Copolymer 10g / L, absolute ethanol 600g / L, and the rest is pure water color solution;

[0038] 2) Pour the prepared color-developing solution into a special enamel tray, soak the absorbent paper in the color-developing solution at a constant speed, take it out, hang it to drain, and put it in a 60°C drying oven to dry for 10-25 minutes to obtain a color-developing layer of absorbent paper;

[0039] 3) Cut the absorbent paper with the color-developing layer obtained in step 2) into strips with a width of 0.6 cm, paste them on a 30×8 cm test paper substrate, and cut them into 8×0.6 cm strips Thickness obtains the benzoyl peroxide detection test paper.

[0040] 1.2 The detection method of benzoyl peroxide in the sample measur...

Embodiment 2

[0064] 2.1 Benzoyl peroxide detection test paper and its preparation

[0065] 1) The mass concentration of the preparation is 0.5g / L of thio-Michler's ketone, 0.05g / L of Tween-80, 0.1g / L of 3,3,5,5-tetramethylbenzidine, and methyl vinyl ether-malay Acid anhydride copolymer 3g / L, absolute ethanol 500g / L, and the rest is a color developing solution of pure water;

[0066] 2) and 3) with embodiment 1.

[0067] The detection method of benzoyl peroxide in the present embodiment is the same as 1.2 in Example 1, and the preparation of the standard color card is the same as 1.3 in Example 1, and will not be repeated here.

[0068] The determination of the detection limit of the benzoyl peroxide detection test paper obtained in the above 2.1, the detection accuracy verification, the specific detection method and the results are basically the same as those in Example 1, and will not be repeated here.

Embodiment 3

[0070] 3.1 Benzoyl peroxide detection test paper and its preparation

[0071] 1) The mass concentration of the preparation is thio-Michler's ketone 1g / L, Tween-80 0.5g / L, 3,3,5,5-tetramethylbenzidine 0.7g / L, methyl vinyl ether-maleic anhydride Copolymer 15g / L, anhydrous ethanol 800g / L, and the rest is a color developing solution of pure water;

[0072] 2) and 3) with embodiment 1.

[0073] The detection method of benzoyl peroxide in the present embodiment is the same as 1.2 in Example 1, and the preparation of the standard color card is the same as 1.3 in Example 1, and will not be repeated here.

[0074] The determination of the detection limit of the benzoyl peroxide detection test paper obtained in the above 3.1, the detection accuracy verification, the specific detection method and the results are basically the same as those in Example 1, and will not be repeated here.

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Abstract

The invention provides benzoyl peroxide test paper. The benzoyl peroxide test paper comprises a test paper substrate and a detection layer arranged on the test paper substrate, wherein the detection layer comprises a detection base layer and a color development layer, and the color developing layer is formed by drying the detection base layer after infiltrated in a color developing solution; the color developing solution comprises the following components calculated by mass concentration: 0.3 to 2g / L of thiomidone, 0.05 to 0.5g / L of Tween-80, 0.1 to 1.5g / L of 3,3,5,5-tetramethylbenzidine, 3 to15g / L of a methyl vinyl ether-maleic anhydride copolymer, 500 to 800g / L of absolute ethanol, and the balance of pure water. The benzoyl peroxide test paper disclosed by the invention has simple and convenient operation, short reaction time, low detection limit, high sensitivity, high accuracy, low single detection cost and long shelf life.

Description

technical field [0001] The invention belongs to the field of food detection, and in particular relates to a benzoyl peroxide detection test paper, a preparation method and a detection method thereof. Background technique [0002] In the field of food safety testing, analytical methods for benzoyl peroxide include gas chromatography, liquid chromatography, spectrophotometry, chemiluminescence, ion chromatography, and the like. Although these methods have the advantages of high detection accuracy, low detection limit, and good repeatability, there are also problems such as cumbersome and time-consuming sample pretreatment steps, expensive detection instruments, long detection cycle, high cost, and excessive reliance on professional and technical personnel. It is conducive to the large-scale preliminary screening of the grass-roots quality inspection department, which is not conducive to the rapid detection on the spot. [0003] And though the kit colorimetric method and test ...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 张晓梅邓乾民
Owner BEIJING PRIMEBIOTEK COMPANY
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