CN2901307Y - Formaldehyde detection test paper - Google Patents
Formaldehyde detection test paper Download PDFInfo
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- CN2901307Y CN2901307Y CN 200520103346 CN200520103346U CN2901307Y CN 2901307 Y CN2901307 Y CN 2901307Y CN 200520103346 CN200520103346 CN 200520103346 CN 200520103346 U CN200520103346 U CN 200520103346U CN 2901307 Y CN2901307 Y CN 2901307Y
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- formaldehyde
- test paper
- aldehyde
- test
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Abstract
The utility model relates to a disposable semi-quantitative aldehyde test paper which relates to chemical testing field. The utility model comprises checker board, test paper, testing fluid and aldehyde test color code. The testing principle lies in that aldehyde and AHMT are condensed in basicity environment and oxygenized into mauve compound with potassium periodate, the color shade of which varies directly with aldehyde content. The utility model is applicable for aldehyde content test of food and drink, the method has advantages of being fast, sensitive, convenient for operation, low cost, unnecessary for professional test and convenient for in-house use.
Description
Technical field
The utility model is that a kind of disposable semiquantitative formaldehyde detects test paper, belongs to field of chemical detection.
Background technology
Formaldehyde (HCHO) claim wooden aldehyde or acetaldehyde again, and 40% formalin is called as formalin solution, is widely used as antiseptic.Formaldehyde is the protoplasmic toxin thing, and formaldehyde exceeds standard bigger to the human body cell functional lesion.Formaldehyde in food has spread effect to intestinal mucosa after entering human body, can cause pulmonary edema, liver, the nephremia and blood vessel peripheral edema, even may be carcinogenic.Formaldehyde can also reduce superoxide dismutase (SOD) in the human body, make body produce stress situation and lipid peroxidation, thereby cause the decline of histocyte damage and immunologic function, simultaneously neurobehavioral functions such as memory, notice, perception velocities are also had to a certain degree influence.
Formaldehyde can improve the sensory properties of food, has bleaching, corrosion-resistant effect.Illegal in recent years retailer is for making a profit, and formaldehyde added beverage, rice product, water as antiseptic send out in the food such as marine product.Be subjected to today of pay attention to day by day in food security, significant to the detection of formaldehyde in food.
The conventional method of measuring content of formaldehyde is generally used large-scale instrument at present.Its advantage comprises detection sensitivity height, quantitatively accurate.But the determination step complexity is time-consuming, need professional's operation, mensuration expense height, thereby is difficult for popularizing.Currently be necessary to develop a kind of simple to operate, method for determining formaldehyde that the result is rapid, reliable, cheap, be convenient to the common people and use voluntarily in the family.The existing patent of this type of method for quick is declared.
It is to utilize the principle of sodium bisulfite and formaldehyde addition to make that granted patent 03241474.9 formaldehyde detects meter; Granted patent 99117400.3 is used to detect test paper, test solution and the detection method thereof of formaldehyde, methanol content, and this patent is to utilize formaldehyde and Schiff reagent reacting colour developing principle to make; Publication 02129031.8 water is sent out marine product formaldehyde detection agent and pick-up unit thereof, and it is to adopt resorcinol and formaldehyde to carry out polycondensation to generate phenol-formaldehyde resin, again with NaOH chemical combination colour developing realization.The utility model is different with the making principle of above patent.
Formaldehyde repid test reagent bottle in publication 200410018305.1 air, it is made up of reagent bottle, developer, inflation syringe, aeration tube, is used for detecting airborne content of formaldehyde; Publication 03150570.8 visual type formaldehyde gas remover, invention is a kind of detection pearl, is used for detecting formaldehyde gas.The utility model is identical with the making principle of above patent, but the utility model is a kind of formaldehyde detects test paper, be mainly used in Determination of formaldehyde content in food, the drink, this method has fast, sensitive, easy and simple to handle, cost is low, need not the professional detects, and really reaches the organic unity of complicated principle and ease of Use.Have characteristics such as preserving convenient, term of validity length simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of formaldehyde and detect test paper, it detects principle: formaldehyde and 4-amino-3-hydrazine-5-sulfydryl-1,2,4-triazole (AHMT) condensation under alkali condition, be oxidized to 6-sulfydryl-5-triazole [4 through potassium metaperiodate then, 3-b]-S-tetrazine aubergine compound, its color and luster depth is directly proportional with content of formaldehyde.
The present invention is achieved by the following technical solutions according to this principle:
This formaldehyde detects test paper and forms by detecting base plate, test paper, colour developing liquid and formaldehyde colorimetric card; Test paper is attached to an end that detects base plate; Colour developing liquid, formaldehyde colorimetric card test paper are for this reason operated supporting part, the independent placement.
The reaction solution configuration:
0.1～10% edta solution: with EDTA-Na
2Be dissolved in the sodium hydroxide solution.
0.1～10% potassium metaperiodate solution: with KIO
4Be dissolved in the potassium hydroxide solution.
The liquid 0.05～5%AHMT develops the color: AHMT is dissolved in the hydrochloric acid, puts in the brown bottle and preserve.
Thieving paper is fixed on plastic plate one end with double faced adhesive tape, with edta solution and potassium metaperiodate solution according to any than mixing, test paper dips in wet back lucifuge and dries.Draw sample with the plastic sample suction pipe, slowly drip 1 (10～20 μ l), drip 1 (10～20 μ l) AHMT again, observation experiment result in 3 minutes to detecting on the test paper.Contrast according to Show Color and colorimetric card, determine whether formaldehyde exceeds standard.
The formaldehyde of realizing according to such scheme detects test paper, have quick, sensitive, easy and simple to handle, cost is low, need not professional's detection, really reaches the organic unity of complicated principle and ease of Use.Have characteristics such as preserving convenient, term of validity length simultaneously.
Description of drawings
Fig. 1 detects the exploded view of test paper for formaldehyde.
Fig. 2 is the main TV structure figure of Fig. 1 formaldehyde.
Fig. 3 detects the colorimetric card of test paper for formaldehyde.
1, test paper; 2, detect base plate; 3-9, formaldehyde colorimetric card colour code (color gradient).
Concrete performance
Test paper (1) sticks on and detects base plate (2) one ends; Drip sample liquid to detecting on the test paper, drip 1 AHMT again, observation experiment result in 3 minutes.Contrast according to Show Color and colorimetric card, determine whether formaldehyde exceeds standard.
Configuration solution:
1,2% edta solution: take by weighing 40g EDTA-Na
2, be dissolved in the 200mL 5.0mol/L sodium hydroxide solution.
2,2% potassium metaperiodate solution: claim 2.0g KIO
4, be dissolved in the 100mL 0.2mol/L potassium hydroxide solution.
3,0.5%AHMT colour developing liquid: take by weighing 0.5g AHMT and be dissolved in the 100mL 0.5mol/L hydrochloric acid, put in the brown bottle and preserve.The test paper preparation:
0.5cm wide thieving paper is fixed on plastic plate one end with double faced adhesive tape, it is wide to be cut into 0.5cm with cutting cutter.
2% edta solution mixes according to 4: 5 ratio with 2% potassium metaperiodate solution, and test paper dips in wet back lucifuge and dries.
Using method:
Sealing bag is opened taking-up formaldehyde detect test paper.
Draw sample with the plastic sample suction pipe, (10～20ul) to detecting on the test paper slowly to drip 1.Drip 1 (10～20ul) 0.5%AHMT, observation experiment result in 3 minutes again.
The result judges:
Observe change color in 1-3 minute and represent the content of formaldehyde difference, relatively detect test paper and the colorimetric card result is as follows:
Color shown in the colour code 3 then represents content of formaldehyde at 100 μ g/mL; Color shown in the colour code 4 then represents content of formaldehyde at 50 μ g/mL; Color shown in the colour code 5 then represents content of formaldehyde at 25 μ g/mL; Color shown in the colour code 6 then represents content of formaldehyde at 10 μ g/mL; Color shown in the colour code 7 then represents content of formaldehyde at 5 μ g/mL; Color shown in the colour code 8 then represents content of formaldehyde at 1 μ g/mL; Color shown in the colour code 9 then represents content of formaldehyde at 0 μ g/mL.
Claims (2)
1. a formaldehyde detects test paper and it is characterized in that it forms by detecting base plate (2), test paper (1), colour developing liquid and formaldehyde colorimetric card; Test paper is attached to an end that detects base plate; Colour developing liquid, formaldehyde colorimetric card test paper are for this reason operated supporting part, the independent placement.
2. it is 4-amino-3-hydrazine-5-sulfydryl-1,2 that a kind of formaldehyde according to claim 1 detects the test paper liquid that it is characterized in that developing the color, 4-triazole solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103346 CN2901307Y (en) | 2005-08-05 | 2005-08-05 | Formaldehyde detection test paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103346 CN2901307Y (en) | 2005-08-05 | 2005-08-05 | Formaldehyde detection test paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901307Y true CN2901307Y (en) | 2007-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520103346 Expired - Fee Related CN2901307Y (en) | 2005-08-05 | 2005-08-05 | Formaldehyde detection test paper |
Country Status (1)
| Country | Link |
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| CN (1) | CN2901307Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262088A (en) * | 2011-04-28 | 2011-11-30 | 吉林大学 | Quick methanol detection device and manufacturing method thereof |
| CN102590197A (en) * | 2012-02-01 | 2012-07-18 | 美的集团有限公司 | Formaldehyde detection equipment |
| CN103592296A (en) * | 2013-11-12 | 2014-02-19 | 三棵树涂料股份有限公司 | Method for demonstrating formaldehyde removing effect of paint film with formaldehyde removing function |
| CN104076034A (en) * | 2014-07-17 | 2014-10-01 | 北京福德安科技有限公司 | RGB quantitative quick detecting test paper for formaldehyde residue in food |
| CN104251860A (en) * | 2013-06-28 | 2014-12-31 | 成都谱视科技有限公司 | Food safety testing analyzer based on intelligent terminal and testing method |
| CN107340289A (en) * | 2017-06-28 | 2017-11-10 | 防城港市质量技术监督局 | A kind of formaldehyde determination kit |
| CN107389670A (en) * | 2017-06-28 | 2017-11-24 | 防城港市质量技术监督局 | A kind of kit for determining formaldehyde in air |
| CN109187869A (en) * | 2018-09-20 | 2019-01-11 | 东莞市北扬工业设计有限公司 | It is a kind of for detecting the device of formaldehyde |
| CN109187870A (en) * | 2018-09-20 | 2019-01-11 | 东莞市北扬工业设计有限公司 | A kind of indoor formaldehyde mechanism for testing |
| CN111537501A (en) * | 2020-03-31 | 2020-08-14 | 陕西省食品药品监督检验研究院 | Kit and method for rapidly detecting total amount of ethylene oxide and 2-chloroethanol in medical instrument |
-
2005
- 2005-08-05 CN CN 200520103346 patent/CN2901307Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262088A (en) * | 2011-04-28 | 2011-11-30 | 吉林大学 | Quick methanol detection device and manufacturing method thereof |
| CN102590197A (en) * | 2012-02-01 | 2012-07-18 | 美的集团有限公司 | Formaldehyde detection equipment |
| CN102590197B (en) * | 2012-02-01 | 2017-03-08 | 美的集团股份有限公司 | A kind of formaldehyde testing equipment |
| CN104251860A (en) * | 2013-06-28 | 2014-12-31 | 成都谱视科技有限公司 | Food safety testing analyzer based on intelligent terminal and testing method |
| CN103592296A (en) * | 2013-11-12 | 2014-02-19 | 三棵树涂料股份有限公司 | Method for demonstrating formaldehyde removing effect of paint film with formaldehyde removing function |
| CN103592296B (en) * | 2013-11-12 | 2016-10-19 | 三棵树涂料股份有限公司 | Formaldehyde removing coating paint film removes aldehyde effect demenstration method |
| CN104076034A (en) * | 2014-07-17 | 2014-10-01 | 北京福德安科技有限公司 | RGB quantitative quick detecting test paper for formaldehyde residue in food |
| CN107340289A (en) * | 2017-06-28 | 2017-11-10 | 防城港市质量技术监督局 | A kind of formaldehyde determination kit |
| CN107389670A (en) * | 2017-06-28 | 2017-11-24 | 防城港市质量技术监督局 | A kind of kit for determining formaldehyde in air |
| CN109187869A (en) * | 2018-09-20 | 2019-01-11 | 东莞市北扬工业设计有限公司 | It is a kind of for detecting the device of formaldehyde |
| CN109187870A (en) * | 2018-09-20 | 2019-01-11 | 东莞市北扬工业设计有限公司 | A kind of indoor formaldehyde mechanism for testing |
| CN111537501A (en) * | 2020-03-31 | 2020-08-14 | 陕西省食品药品监督检验研究院 | Kit and method for rapidly detecting total amount of ethylene oxide and 2-chloroethanol in medical instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20100805 |