CN104359902A - Formaldehyde colour-rendering test paper, and preparation method and application thereof - Google Patents
Formaldehyde colour-rendering test paper, and preparation method and application thereof Download PDFInfo
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- CN104359902A CN104359902A CN201410639657.2A CN201410639657A CN104359902A CN 104359902 A CN104359902 A CN 104359902A CN 201410639657 A CN201410639657 A CN 201410639657A CN 104359902 A CN104359902 A CN 104359902A
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Abstract
The invention discloses a piece of formaldehyde colour-rendering test paper and a preparation method. The preparation method disclosed by the invention comprises the following steps: firstly, mixing and dissolving ammonium acetate, glacial acetic acid and acetylacetone according to the proportion of 25g:3mL:(0.5-1.5)mL, then, adding purified water, thus obtaining mixed solution 1, in which the volume percentage concentration of acetylacetone is 0.5-1.5%; adding water-soluble polyacrylic acid resin into the obtained mixed solution 1 according to the proportion of (1-3)g:1ml, thus obtaining mixed solution 2 after stirring and mixing uniformly; and finally, after immersing a piece of kapok paper in the mixed solution 2 for 2 h, naturally airing in air, and thus obtaining the formaldehyde colour-rendering test paper. The formaldehyde colour-rendering test paper can be used for judging working conditions of an indoor air-purifying and formaldehyde-removing device; and the lowest detection lower limit is 0.01 mg/m<3>; and the relative concentration of formaldehyde is reflected according to the colour change of the formaldehyde colour-rendering test paper.
Description
Technical field
The present invention relates to a kind of formaldehyde colour developing test paper and its preparation method and application, belong to air detection field.
Background technology
Formaldehyde, a kind of colourless gas having special pungent odour.It has strong reducing action in the basic conditions.Formaldehyde is toxic, and low concentration contact can cause headache, dizziness, weak, sensory disturbance, immunity reduction, and can occur drowsiness, failure of memory or neurasthenia, mental depression; Slow poisoning is also huge to the harm of respiratory system, and Long Term Contact formaldehyde can cause respiratory dysfunction and hepatogenotoxicity pathology, shows as hepatocellular injury, liver radiation energy exception etc.So it always is people's fear in the heart.In recent years, researcher has carried out the research of several ozone treatment, comprises active carbon adsorption, thermal decomposition method, liquid absorption process, atmospheric dilution exhaust method and catalytic decomposition etc.Wherein catalytic decomposition is the most common, and now most by catalyst cupport on other carriers, as air-conditioning, clarifier etc.But people really can not pass through visual inspection for the elimination situation of formaldehyde and catalyst deactivation situation.
Now commercially have special air pollution testing agency test cabinet internal contamination, result is accurate.But because the high price of its hundreds of units sample is not easily that ordinary consumer can bear, formaldehyde colour developing test paper arises at the historic moment.Indoor air cleaner initially can reach formaldehyde and remove, and so its concentration is lower; Along with the service time of clarifier extends, formaldehyde clearance reduces, therefore, when content of formaldehyde is higher than standard content, the colour developing test paper color development of the position of draft outlet, but not present commercially available colour developing card, concentration of formaldehyde its colour developing test paper color certain is determined, without reversibility.
Summary of the invention
An object of the present invention is color change in order to solve air purifier formaldehyde test paper and the technical matters such as the clean-up effect of clarifier is associated and provide a kind of formaldehyde to develop the color test paper, this formaldehyde colour developing test paper PARA FORMALDEHYDE PRILLS(91,95) concentration has gradual change character, and the removal situation of formaldehyde is represented by shade, there is sustainability intuitive and convenient.
Two of object of the present invention is to provide the preparation method of above-mentioned a kind of formaldehyde colour developing test paper.
Three of object of the present invention is to provide a kind of above-mentioned formaldehyde colour developing test paper that utilizes to judge that indoor air cleaning eliminates the method for the operating mode of formaldehyde plant.
Technical scheme of the present invention
A kind of formaldehyde colour developing test paper, is prepared from especially by the method comprised the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is that the ratio mixing of 25g:3mL:0.5-1.5mL is dissolved, and then joined in pure water, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 0.5-1%;
(2), by water-soluble polypropylene acid resin join in the mixed solution 1 of step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 1-3g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
Utilize above-mentioned a kind of formaldehyde colour developing test paper can judge that indoor air cleaning eliminates the operating mode of formaldehyde plant, its method is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, concentration of formaldehyde is 0.01-0.1mg/m
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, concentration of formaldehyde is 0.1-0.15mg/m
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
Beneficial effect of the present invention
A kind of formaldehyde colour developing test paper of the present invention, described formaldehyde and diacetone are at NH
4 +under excess conditions, color reaction occurs, its color and luster depth is directly proportional to concentration of formaldehyde; In addition, introduce aqueous polyacrylamide acid resin in diacetone, after air-dry, the diacetone solution with color developing effect is sealed up for safekeeping in kapok paper, realizes the real time correlation of the color change of formaldehyde colour developing test paper and concentration change; Be applied to the outlet that indoor air cleaning eliminates formaldehyde plant, its operating mode can be judged simple and easy, easily.
Formaldehyde colour developing test paper PARA FORMALDEHYDE PRILLS(91,95) of the present invention is sensitive especially, and can detect the formaldehyde that in air, concentration is low especially, Monitoring lower-cut is 0.01mg/m
3, and reflect formaldehyde relative concentration, intuitive and convenient by color change, can help to judge that formaldehyde eliminates situation and catalyst deactivation situation.
concrete case study on implementation
In order to better understand and implement, describe the present invention in detail below by specific embodiment, but do not limit the present invention.
embodiment 1
A kind of formaldehyde colour developing test paper, is prepared from especially by the method comprised the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is the ratio of 25g:3mL:0.5 mL, the mixing of 25g ammonium acetate, 3mL glacial acetic acid and 0.5mL diacetone is dissolved, then pure water is added, be settled to 100ml, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 0.5%;
(2), 100g water-soluble polypropylene acid resin is joined in the mixed solution 1 of 100ml step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 1g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
Utilize above-mentioned a kind of formaldehyde colour developing test paper to judge that indoor air cleaning eliminates the operating mode of formaldehyde plant, step is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, indoor formaldehyde concentration is 0.01-0.1mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, indoor formaldehyde concentration is 0.1-0.15mg/m after testing
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
The above results shows, formaldehyde colour developing test paper is at 0-0.15mg/m
3inside have obvious color gradient, may be used for the judgement of concentration of formaldehyde height, its Monitoring lower-cut is 0.01mg/m
3, meet the indoor formaldehyde concentration of regulation in indoor environment standard GB/T18883-2002 " Indoor Air Quality standards " not higher than 0.1 mg/m
3.
embodiment 2
A kind of formaldehyde colour developing test paper, is prepared from especially by the method comprised the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is the ratio of 25g:3mL:1mL, the mixing of 25g ammonium acetate, 3mL glacial acetic acid and 1mL diacetone is dissolved, then add pure water, be settled to 100ml, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 1%;
(2), 150g water-soluble polypropylene acid resin is joined in the mixed solution 1 of 100ml step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 1.5g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
Utilize above-mentioned a kind of formaldehyde colour developing test paper to judge that indoor air cleaning eliminates the operating mode of formaldehyde plant, step is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, indoor formaldehyde concentration is 0.01-0.1mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, indoor formaldehyde concentration is 0.1-0.15mg/m after testing
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
The above results shows, formaldehyde colour developing test paper is at 0-0.15mg/m
3inside have obvious color gradient, may be used for the judgement of concentration of formaldehyde height, its Monitoring lower-cut is 0.01mg/m
3, meet the indoor formaldehyde concentration of regulation in indoor environment standard GB/T18883-2002 " Indoor Air Quality standards " not higher than 0.1 mg/m
3.
embodiment 3
A kind of formaldehyde colour developing test paper, is prepared from especially by the method comprised the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is the ratio of 25g:3mL:1.5mL, the mixing of 25g ammonium acetate, 3mL glacial acetic acid and 1.5mL diacetone is dissolved, then add pure water, be settled to 100ml, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 1.5%;
(2), 200g water-soluble polypropylene acid resin is joined in the mixed solution 1 of 100ml step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 2g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
Utilize above-mentioned a kind of formaldehyde colour developing test paper to judge that indoor air cleaning eliminates the operating mode of formaldehyde plant, step is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, concentration of formaldehyde is 0.01-0.1mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, concentration of formaldehyde is 0.1-0.15mg/m after testing
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
The above results shows, formaldehyde colour developing test paper is at 0-0.15mg/m
3inside have obvious color gradient, may be used for the judgement of concentration of formaldehyde height, its Monitoring lower-cut is 0.01mg/m
3, meet the indoor formaldehyde concentration of regulation in indoor environment standard GB/T18883-2002 " Indoor Air Quality standards " not higher than 0.1 mg/m
3.
embodiment 4
A kind of formaldehyde colour developing test paper, is prepared from especially by the method comprised the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is the ratio of 25g:3mL:1.5mL, the mixing of 25g ammonium acetate, 3mL glacial acetic acid and 1.5mL diacetone is dissolved, then add pure water, be settled to 100ml, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 1.5%;
(2), 300g water-soluble polypropylene acid resin is joined in the mixed solution 1 of 100mL step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 3g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
Utilize above-mentioned a kind of formaldehyde colour developing test paper to judge that indoor air cleaning eliminates the operating mode of formaldehyde plant, step is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, concentration of formaldehyde is 0.01-0.1mg/m after testing
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, concentration of formaldehyde is 0.1-0.15mg/m after testing
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
The above results shows, formaldehyde colour developing test paper is at 0-0.15mg/m
3inside have obvious color gradient, may be used for the judgement of concentration of formaldehyde height, its Monitoring lower-cut is 0.01mg/m
3, meet the indoor formaldehyde concentration of regulation in indoor environment standard GB/T18883-2002 " Indoor Air Quality standards " not higher than 0.1 mg/m
3.
In sum, a kind of formaldehyde colour developing test paper of the present invention, mainly through formaldehyde and diacetone at NH
4+under excess conditions, color reaction occurs, its color and luster depth is directly proportional to concentration of formaldehyde; In addition, introduce aqueous polyacrylamide acid resin in diacetone, after air-dry, the diacetone solution with color developing effect is sealed up for safekeeping in kapok paper, realizes the real time correlation that the change of formaldehyde colour developing test paper color changes with concentration of formaldehyde; Be applied to the outlet except formaldehyde air purifier, the operating mode of formaldehyde plant can be eliminated namely the need of cleaning and renewal by visual inspection indoor air cleaning.
The above is only the citing of embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a preparation method for formaldehyde colour developing test paper, is characterized in that specifically comprising the steps:
(1), in ammonium acetate: glacial acetic acid: diacetone is that the ratio mixing of 25g:3mL:0.5-1.5mL is dissolved, and then add pure water, the concentration of volume percent obtaining diacetone is the mixed solution 1 of 0.5-1%;
(2), by water-soluble polypropylene acid resin join in the mixed solution 1 of step (1) gained, after being uniformly mixed, obtain mixed solution 2;
The addition of water-soluble polypropylene acid resin, in water-soluble polypropylene acid resin: the mixed solution 1 of step (1) gained is the ratio calculating of 1-3g:1ml;
(3), kapok paper is soaked 2h in the mixed solution 2 of step (2) gained after, natural air drying in air, obtain formaldehyde colour developing test paper.
2. the formaldehyde colour developing test paper of preparation method's gained as claimed in claim 1.
3. utilize the formaldehyde described in claim 2 to develop the color test paper to judge that indoor air cleaning eliminates the method for the operating mode of formaldehyde plant, it is characterized in that step is as follows:
The test paper that developed the color by formaldehyde is placed on the draft outlet that indoor air cleaning eliminates formaldehyde plant,
When formaldehyde colour developing test paper color development is colourless, concentration of formaldehyde is lower than 0.01mg/m
3, indoor air cleaning eliminates formaldehyde plant does not need cleaning, can work on;
When formaldehyde colour developing test paper color is light yellow, concentration of formaldehyde is 0.01-0.1mg/m
3, indoor air cleaning eliminates formaldehyde plant needs cleaning;
When formaldehyde colour developing test paper color is buff, concentration of formaldehyde is 0.1-0.15mg/m
3, indoor formaldehyde exceeds standard seriously, and indoor air cleaning eliminates formaldehyde plant to be needed to upgrade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410639657.2A CN104359902B (en) | 2014-11-13 | 2014-11-13 | Formaldehyde colour-rendering test paper, and preparation method and application thereof |
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| CN201410639657.2A CN104359902B (en) | 2014-11-13 | 2014-11-13 | Formaldehyde colour-rendering test paper, and preparation method and application thereof |
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| CN104359902B CN104359902B (en) | 2017-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741420A (en) * | 2017-10-16 | 2018-02-27 | 祁忆青 | A kind of device and method for preparing test paper of Rapid Detection of Formaldehyde burst size |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741420A (en) * | 2017-10-16 | 2018-02-27 | 祁忆青 | A kind of device and method for preparing test paper of Rapid Detection of Formaldehyde burst size |
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