CN113740492A - Method for testing formaldehyde removal effect of air purifying agent - Google Patents
Method for testing formaldehyde removal effect of air purifying agent Download PDFInfo
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- CN113740492A CN113740492A CN202111009484.2A CN202111009484A CN113740492A CN 113740492 A CN113740492 A CN 113740492A CN 202111009484 A CN202111009484 A CN 202111009484A CN 113740492 A CN113740492 A CN 113740492A
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000012629 purifying agent Substances 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 title claims abstract description 21
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims description 162
- 239000002655 kraft paper Substances 0.000 claims description 25
- 238000005070 sampling Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 11
- 230000007613 environmental effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000007605 air drying Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011094 fiberboard Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005034 decoration Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000004887 air purification Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 description 6
- 230000036541 health Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000008098 formaldehyde solution Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention relates to the field of air purification, and aims to provide a method for testing the formaldehyde-removing effect of an air purifying agent. In addition, the concentration of the release source is equivalent to the actual living room pollution concentration, the actual application effect of the air purifying agent can be objectively evaluated, and the air purifying agent is simple to operate and easy to master.
Description
Technical Field
The invention relates to the technical field of environmental purification products, in particular to a method for testing the formaldehyde removal effect of an air purifying agent.
Background
In recent years, the living standard of people is continuously improved, house decoration is increasingly common, the environmental pollution problem caused by decoration is very serious, formaldehyde has great harm to the health of human bodies, and the toxic action of the formaldehyde on the human bodies relates to multiple systems and multiple organs, and is classified as a potential carcinogen and an important environmental pollutant by the World Health Organization (WHO) and the United states Environmental Protection Agency (EPA). Air purification treatment materials and companies are increasing day by day, but the state also provides corresponding national standards for how a plurality of purification materials are tested for the purification effect, QB/T2761-2006 'method for determining the purification effect of indoor air purification products', JC/T1074 'purification performance of indoor air purification function coating materials' and the like, but the test standards adopt formaldehyde analysis pure solution as a release source to test the purification effect of the materials, the formaldehyde concentration is high, the formaldehyde concentration is inconsistent with the actual pollution concentration of rooms, the environment is polluted, and the physical health of testers is directly damaged.
Therefore, it is necessary to develop a method for testing the formaldehyde removal effect of various purifying agent products without using formaldehyde in the whole process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for testing the formaldehyde removal effect of an air purifying agent, and accordingly, the formaldehyde removal effect of various purifying agent products is judged.
To achieve the above object, the present invention is achieved by the following steps:
the method comprises the following steps: sequentially cleaning the sample environment chamber and the blank environment chamber, drying, sealing for 12H, and then controlling the formaldehyde concentration of the sample environment chamber and the blank environment chamber to be 0.05mg/m3The difference between the two is within 15 percent;
step two: cutting an E0-grade medium-density fiberboard into a plurality of test piece boards with the same dimension and specification according to the requirements in GBl 8580-2001, namely, the indoor decoration and finishing material artificial board and the formaldehyde release limit of products thereof, then dispersing the cut test piece boards in a ventilation walkway for full environmental contact, and then putting the test piece boards into 1 airtight box for taking;
step three: spraying the air purifying agent to be tested on kraft paper, spraying for the second time after the first time of air drying, spraying for the third time after the second time of air drying, and naturally drying for three days to be used as sample kraft paper; preparing blank kraft paper with the same size and specification;
step four: respectively placing sample kraft paper and blank kraft paper into a sample environment cabin and a blank environment cabin, respectively placing equal test piece plates into the sample environment cabin and the blank environment cabin, and sealing the cabin doors;
step five: starting fans in the sample environment chamber and the blank environment chamber, closing and sampling after 30min, and measuring formaldehyde concentration values in the sample environment chamber and the blank environment chamber to serve as initial concentrations;
step six: starting the fluorescent lamps in the sample environment chamber and the blank environment chamber in the whole process, starting the fan for 30min before sampling, closing the fan and standing for 5min, namely sampling and detecting the formaldehyde concentration values in the sample environment chamber and the blank environment chamber as the concentration after reaction, and sampling and detecting every 4H;
step seven: when the experiment is carried out to 24H, sampling the formaldehyde concentration values of the test sample environment chamber and the blank environment chamber, and calculating the formaldehyde removal rate according to the following formula:
alternatively, a formaldehyde tester is used to test the concentration of formaldehyde.
Optionally, the size of the sample kraft paper and the size of the blank kraft paper are both 1m2。
Optionally, the enclosure is all 100cm by 100cm in size.
Optionally, the spraying amount of the air purifying agent on the sample kraft paper is 100g/m2。
Optionally, the sample environment chamber and the blank environment chamber in the first step are cleaned by sequentially using soapy water, tap water and deionized water.
Compared with the prior art, the invention has the following advantages and effects:
(1) when a tester places a release source into the environmental chamber, the tester does not contact with the formaldehyde solution, and the harm to the health of the body is small;
(2) during testing, a release source does not need to be prepared by using a formaldehyde solution, so that the environment is not polluted; after the test, the formaldehyde residue in the environmental chamber body is less, the formaldehyde residue is easy to remove, and the environmental pollution is small;
(3) excessive formaldehyde is not added artificially, the concentration of the release source is equivalent to the concentration in the actual room, and the actual application effect of the air purifying agent can be objectively evaluated;
(4) simple operation, economy and practicality.
Drawings
FIG. 1 is a graph showing the concentration of formaldehyde in a chamber in a blank environment.
Detailed Description
The invention is further described below with reference to the drawings and examples, but the scope of the invention as claimed is not limited to the scope of the examples.
Example 1
The method comprises the following steps: sequentially cleaning the sample environment chamber and the blank environment chamber by using soapy water, tap water and deionized water, drying and sealing for 12H, testing the formaldehyde concentration of the sample environment chamber and the blank environment chamber by using a formaldehyde tester, and when the formaldehyde concentration of the sample environment chamber and the blank environment chamber is 0.05mg/m3The next test can be carried out only if the difference is within 15 percent;
step two: e0 grade, medium density fiberboard with specification of 1220mm 2440mm 5mm, according to the requirements of GBl 8580-2001, limit of formaldehyde emission in artificial plates of interior decoration materials and products thereof: cutting the medium-density fiberboard after 50mm of the length and the width direction of the medium-density fiberboard is removed respectively, cutting the medium-density fiberboard into a plurality of test piece boards with the same size and specification according to the test requirements, and cutting off the protruding part with the tenon; then, the cut test piece plates are dispersed in a ventilation channel for sufficient environmental contact, and sufficient environmental contact treatment is carried out, so that the formaldehyde emission tends to be stable; then placing the test piece plate into a closed box with the specification of 100cm by 100cm to be taken out so as to ensure that the initial concentration of the test piece plate is the same during measurement;
step three: air purifier spray to be tested 1m2The kraft paper is sprayed for 3 times, and the total spraying amount of the 3 times is 100g/m2Spraying for the second time after the first time of air drying, spraying for the third time after the second time of air drying, and naturally drying for three days to be used as sample kraft paper; preparing blank kraft paper with the same size and specification;
step four: respectively placing sample kraft paper and blank kraft paper into a sample environment cabin and a blank environment cabin, respectively placing equal test piece plates into the sample environment cabin and the blank environment cabin, and then sealing the cabin doors;
step five: starting fans in the sample environment chamber and the blank environment chamber, closing and sampling after 30min, and measuring formaldehyde concentration values in the sample environment chamber and the blank environment chamber by using a formaldehyde tester to serve as initial concentrations;
step six: starting the fluorescent lamps in the sample environment chamber and the blank environment chamber in the whole process, starting the fan for 30min before sampling, then closing the fan, standing for 5min, testing the formaldehyde concentration values in the sample environment chamber and the blank environment chamber by using a formaldehyde tester, taking the formaldehyde concentration values as the concentration after reaction, and sampling and detecting every 4H;
step seven: when the experiment is carried out to 24H, the formaldehyde concentration values of the sample environment chamber and the blank environment chamber are tested by using a formaldehyde tester, and the formaldehyde removal rate is calculated according to the following formula:
comparative example 1
The method comprises the following steps: the same as example 1;
step two: rolling medical absorbent gauze at one end of a glass rod, and fixing the medical absorbent gauze by cotton threads; then immersing the substrate into a formaldehyde solution with the mass percentage concentration of 0.2 percent, taking the substrate as a formaldehyde release source I, and immediately putting the substrate into use after the substrate is completely wetted;
step three: the same as example 1;
step four: respectively placing sample kraft paper and blank kraft paper into a sample environment cabin and a blank environment cabin, respectively placing equivalent formaldehyde release sources I into the sample environment cabin and the blank environment cabin, and then sealing the cabin door;
step five to step seven: the same as example 1;
comparative example 2
The method comprises the following steps: the same as example 1;
step two: in a ventilation kitchen, 1ml of 0.3 percent formaldehyde analytical pure solution is extracted by a micro-syringe and placed in a watch glass, two solutions are prepared and used as formaldehyde release sources, and the two solutions are prepared and used at present;
step three: the same as example 1;
step four: respectively placing sample kraft paper and blank kraft paper into a sample environment cabin and a blank environment cabin, respectively placing equivalent formaldehyde release sources II into the sample environment cabin and the blank environment cabin, and then sealing the cabin doors;
step five to step seven: the same as example 1;
TABLE 1 Formaldehyde concentration (mg/m) of the cabin in the blank Environment3)
TABLE 2 concentration of formaldehyde after reaction of example 1 (mg/m)3)
As can be seen from tables 1-2 and FIG. 1: according to the method for testing the formaldehyde-removing effect of the air purifying agent, formaldehyde release is performed according to a linear rule, and the reproducibility is good; the concentration of the formaldehyde release source is equivalent to the actual room pollution concentration, the degradation rate after 24H reaches more than 70 percent, and the concentration of the formaldehyde residue is 0.089mg/m3Less than 0.1mg/m3The national standard of (1); the air purifying agent can be objectively evaluated for the actual application effect, provides an environment-friendly release source for the air purifying agent, and has no harm to the health of testers and no environmental pollution.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. A method for testing the formaldehyde-removing effect of an air purifying agent is characterized by comprising the following steps:
the method comprises the following steps: sequentially cleaning the sample environment chamber and the blank environment chamber, drying, sealing for 12H, and then controlling the formaldehyde concentration of the sample environment chamber and the blank environment chamber to be 0.05mg/m3The difference between the two is within 15 percent;
step two: cutting an E0-grade medium-density fiberboard into a plurality of test piece boards with the same dimension and specification according to the requirements in GBl 8580-2001, namely, the indoor decoration and finishing material artificial board and the formaldehyde release limit of products thereof, then dispersing the cut test piece boards in a ventilation walkway for full environmental contact, and then putting the test piece boards into a closed box for taking;
step three: spraying the air purifying agent to be tested on kraft paper, spraying for the second time after the first time of air drying, spraying for the third time after the second time of air drying, and naturally drying for three days to be used as sample kraft paper; preparing blank kraft paper with the same size and specification;
step four: respectively placing sample kraft paper and blank kraft paper into a sample environment cabin and a blank environment cabin, respectively placing equal test piece plates into the sample environment cabin and the blank environment cabin, and sealing the cabin doors;
step five: starting fans in the sample environment chamber and the blank environment chamber, closing and sampling after 30min, and measuring formaldehyde concentration values in the sample environment chamber and the blank environment chamber to serve as initial concentrations;
step six: starting the fluorescent lamps in the sample environment chamber and the blank environment chamber in the whole process, starting the fan for 30min before sampling, closing the fan and standing for 5min, namely sampling and detecting the formaldehyde concentration values in the sample environment chamber and the blank environment chamber as the concentration after reaction, and sampling and detecting every 4H;
step seven: when the experiment is carried out to 24H, sampling the formaldehyde concentration values of the test sample environment chamber and the blank environment chamber, and calculating the formaldehyde removal rate according to the following formula:
2. the method for testing the formaldehyde-removing effect of the air purifying agent according to claim 1, wherein a formaldehyde tester is used to test the concentration of formaldehyde.
3. The method for testing formaldehyde-removing effect of the air purifying agent according to claim 1, wherein the size of each of the sample kraft paper and the blank kraft paper is 1m2。
4. The method for testing the formaldehyde-removing effect of the air purifying agent according to claim 1, wherein the sizes of the closed boxes are 100cm by 100 cm.
5. The method for testing the formaldehyde-removing effect of the air purifying agent according to claim 1, wherein the spraying amount of the air purifying agent on the sample kraft paper is 100g/m2。
6. The method for testing the formaldehyde-removing effect of the air purifying agent as claimed in claim 1, wherein the sample environment chamber and the blank environment chamber in the first step are sequentially cleaned by using soapy water, tap water and deionized water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111009484.2A CN113740492A (en) | 2021-08-31 | 2021-08-31 | Method for testing formaldehyde removal effect of air purifying agent |
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| CN202111009484.2A CN113740492A (en) | 2021-08-31 | 2021-08-31 | Method for testing formaldehyde removal effect of air purifying agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114235796A (en) * | 2021-12-17 | 2022-03-25 | 几何智慧城市科技(广州)有限公司 | Environment-friendly method for evaluating effect of formaldehyde purifying agent |
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Application publication date: 20211203 |