CN103698324B - Air formaldehyde self testing kit - Google Patents
Air formaldehyde self testing kit Download PDFInfo
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- CN103698324B CN103698324B CN201310611950.3A CN201310611950A CN103698324B CN 103698324 B CN103698324 B CN 103698324B CN 201310611950 A CN201310611950 A CN 201310611950A CN 103698324 B CN103698324 B CN 103698324B
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- formaldehyde
- diluent
- acidulant
- absorbent
- self testing
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 25
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002250 absorbent Substances 0.000 claims abstract description 19
- 230000002745 absorbent Effects 0.000 claims abstract description 19
- 239000003085 diluting agent Substances 0.000 claims abstract description 17
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical group O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims abstract description 16
- XGGLLRJQCZROSE-UHFFFAOYSA-K ammonium iron(iii) sulfate Chemical group [NH4+].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O XGGLLRJQCZROSE-UHFFFAOYSA-K 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- -1 acidulant Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000012895 dilution Substances 0.000 claims description 6
- 238000010790 dilution Methods 0.000 claims description 6
- 239000012916 chromogenic reagent Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 22
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical group O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 10
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 8
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 208000031320 Teratogenesis Diseases 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical group [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- PHOLIFLKGONSGY-CSKARUKUSA-N (e)-(3-methyl-1,3-benzothiazol-2-ylidene)hydrazine Chemical compound C1=CC=C2S\C(=N\N)N(C)C2=C1 PHOLIFLKGONSGY-CSKARUKUSA-N 0.000 description 1
- 241000532370 Atla Species 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 208000031404 Chromosome Aberrations Diseases 0.000 description 1
- 208000014085 Chronic respiratory disease Diseases 0.000 description 1
- 206010067477 Cytogenetic abnormality Diseases 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 206010064571 Gene mutation Diseases 0.000 description 1
- 208000019255 Menstrual disease Diseases 0.000 description 1
- 208000002454 Nasopharyngeal Carcinoma Diseases 0.000 description 1
- 206010061306 Nasopharyngeal cancer Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001268161 Sternotherus odoratus Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 238000007398 colorimetric assay Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 210000001989 nasopharynx Anatomy 0.000 description 1
- 201000011216 nasopharynx carcinoma Diseases 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 210000003800 pharynx Anatomy 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000035935 pregnancy Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention discloses a kind of air formaldehyde self testing kit, including absorbent, acidulant, diluent, developer and colorimetric card；Described absorbent is phenol reagent, and acidulant is phosphorus pentoxide, and described diluent is pure water, and described developer is ammonium ferric sulfate.The box of testing oneself is adapted to family and uses, and can be detected with content of formaldehyde economic, convenient, accurately and rapidly to interior.
Description
Technical field
The present invention relates to the technical field of air detection formaldehyde, espespecially a kind of air formaldehyde self testing kit.
Background technology
Formaldehyde is a kind of plasm poisonous substance for destroying biological cell protein, and at typical condition, pure formaldehyde is a kind of band
There are the colourless gas of stinkpot, the skin of people, respiratory tract and internal organ can be caused damage, its extent of injury is with it in air
In concentration it is closely related with the length of time of contact.Formaldehyde also has teratogenesis, carcinogenesis, and the people of Long Term Contact formaldehyde suffers from
The probability of nasal cavity, oral cavity, nasopharynx, throat, skin and alimentary tract cancer is higher than common people, and mankind's Long Term Contact low amounts formaldehyde can be with
Cause chronic respiratory disease, feminine menstrual disorder, pregnancy syndrome, cause neonate's constitution to reduce, chromosome abnormality, or even
Cause nasopharyngeal carcinoma, the formaldehyde of high concentration is all toxic to nervous system, immune system, liver etc..Formaldehyde is the World Health Organization
The teratogenesis of confirmation, carcinogen, Long Term Contact will cause gene mutation, be arranged in the list for being China's toxic chemical priority acccess control
Second.
China《Indoor air quality-monitoring technical specification》（HJ/ T167- 2004）Recommend to use AHMT light splitting light
Degree method, phenol reagent method, acetylacetone,2,4-pentanedione AAS, gas chromatography and electrochemical sensor method are used as formaldehyde
Assay method.Wherein gas chromatography has the characteristics of selectivity is good, and disturbing factor is small, but gas chromatograph somewhat expensive；
AHMT AAS strong antijamming capabilities, sensitivity is higher, but operation is required strictly；Acetylacetone,2,4-pentanedione AAS is to coexisting
Phenol and noiseless, easy to operate, the favorable reproducibility such as ethanol, but sensitivity is relatively low；Electrochemical sensor method is easy to operate and fast
Speed, but the price of formaldehyde sensor is universal more expensive.
The content of the invention
The technical problems to be solved by the invention are provide that a kind of suitable family uses economic, convenient, accurate, quick
Air formaldehyde self testing kit, it passes through to reappear and optimize national standard Law《Public place method for determining formaldehyde in air phenol reagent
AAS》（GB/T18204.26-2000）, it is desirably to obtain the optimum proportioning of the constituent of box of testing oneself.
In order to solve the above technical problems, technical solution of the invention is：
A kind of air formaldehyde self testing kit, including absorbent, acidulant, diluent, developer and colorimetric card；Described absorption
Agent is phenol reagent, and described acidulant is phosphorus pentoxide, and described diluent is pure water, and described developer is ferric sulfate
Ammonium.
Described absorbent is 0.03mg/ml with the described mixed mass concentration of diluent pure water.
After the phosphorus pentoxide is mixed in the diluent, its mass concentration is 25g/L.
Described developer is ammonium ferric sulfate that mass concentration is 1.5%.
Acidulant is added with the phenol reagent, the acidulant is phosphorus pentoxide powder, while acidulant plays drying
Agent is acted on, and keeps reagent to dry.
Described colorimetric card preparation process is：By the absorbent and acidulant by the dilution dilution agent, with difference
The formaldehyde of concentration reacts with the absorbent after above-mentioned dilution, by reaction solution with the chromogenic reagent, is prepared according to colour developing degree
Standard color comparison card.
After such scheme, the present invention, as absorbent, is acidified using phenol reagent using phosphorus pentoxide, is used
Ammonium ferric sulfate prepares standard color comparison card as developer again by mentioned reagent, for indoor formaldehyde concentration detection more
For accurate, quick, convenient.
More specifically, the invention has the advantages that：
1st, sensitivity is high：It is high with formaldehyde reaction sensitivity using the phenol reagent of optimum proportioning, acidulant, it is more beneficial for inspection
Survey, more quickly, convenient.
2nd, low cost：Phenol reagent price most expensive in the detection process, compared to more published several kit patents
Technology, the phenol reagent addition of this method is minimum.
3rd, using acidulant：The need of detection process make solution keep acidifying state.In published detection method, typically make
It is acidified with sulfuric acid, nitric acid or hydrochloric acid etc., process is complicated.This method is mixed using phenol reagent with phosphorus pentoxide, five oxidations
Two phosphorus can ensure phenol reagent stabilization during usually storing, and serve as drier；It is dissolved in absorption process and process color
After water, solution acidifying makes that absorption process is rapid, chromogenic reaction stabilization is carried out.Above procedure causes kit medicament of the invention
Reasonable mixture ratio, process is simple, favorable reproducibility.
Brief description of the drawings
Fig. 1 is the schematic diagram of standard color comparison card of the present invention.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Disclosed is a kind of air formaldehyde self testing kit, it includes absorbent, acidulant, diluent, developer
And colorimetric card.The principle of the box of testing oneself is using the formaldehyde and MBTH in air（Abbreviation phenol reagent）
Reaction generation piperazine, piperazine aoxidizes to form blue-green compound by ferric ion in an acidic solution, the shade of the compound with
The content of formaldehyde is directly proportional, after developing time 30min, by colorimetric assay.The principle is according to national standard Law《Public place
Method for determining formaldehyde in air phenol reagent method》（GB/T18204.26-2000）.
Described absorbent selects phenol reagent, in order to prevent the moisture in air from influenceing measurement result, can be to absorbent
Phosphorus pentoxide is added in phenol reagent as drier, and is positioned over simultaneously in a box, and sealing preserve.
Described acidulant is phosphorus pentoxide, and it shows acidity after being dissolved in water.
Described diluent selects pure water.
The phenol reagent of configuration is 0.3mg in described testing cassete, and diluent pure water is 10ml, and mixed solution is matter during test
Amount concentration is the phenol reagent solution of 0.03mg/ml.
The determination of the acidulant, developer：The piperazine generated according to formaldehyde and phenol reagent in an acidic solution by high ferro from
Son oxidation forms blue-green compound, and respectively with acidified ammonium ferric sulfate solution, sulphation ammonium ferric sulfate, nitrification ferric sulfate
Ammonium and phosphorus pentoxide solution acidifying ammonium ferric sulfate, according to color developing effect, it is determined that optimal color condition is phosphorus pentoxide quality
Concentration is 25g/L, and ammonium ferric sulfate is mass concentration 1.5%..
Acidulant uses phosphorus pentoxide 250mg in kit, is dissolved in 10ml water.
Developer uses the ammonium ferric sulfate of mass concentration 1.5%
The preparation of the colorimetric card：Determine standard ratio using above-mentioned selected absorbent, acidulant, diluent, developer
Colour atla.Described absorbent and acidulant are first diluted to mass concentration for 0.03mg/ml by the diluent, it is dense with formaldehyde
Degree respectively 0.05,0.10,0.20,0.40,0.60,0.80,1.20mg/m3Formaldehyde it is anti-with absorbent after above-mentioned dilution
Should, by reaction solution with the chromogenic reagent, standard color comparison card is prepared according to colour developing degree, as shown in Figure 1.
Detection process of the invention is：Absorbent, acidulant are first carried out into a certain proportion of dilution with diluent, is then put
In the interior to be detected, a period of time is placed, the formaldehyde in phenol reagent absorption air, reaction generation piperazine is added colour developing afterwards
Agent, developing time is 30min or so, observes color and is contrasted with colorimetric card, judges indoor formaldehyde content.It is common according to the Chinese people
With state's national standard《The sanitary standard of formaldehyde in indoor air》（GB/T 18883-2002）Regulation：Formaldehyde in indoor air
Maximum permissible concentration is 0.08 mg/m3.If colour developing exceedes colorimetric card left side secondary series, it is believed that formaldehyde in room.
Air formaldehyde self testing kit test result of the present invention and the test result of GB phenol reagent method are entered
Row contrast experiment：
The air formaldehyde self testing kit formula for being worked out with GB phenol reagent method and the present invention respectively, between three
In the room of different concentration of formaldehyde, the measurement of air formaldehyde concentration is synchronously carried out.
Test oneself result that box obtains of formaldehyde compares reading and obtains the concentration of formaldehyde in three rooms and is respectively according to colorimetric card：
0.05 mg/m3、0.2~0.4 mg/m3、0.2 mg/m3。
And the absorbance of chromophoric solution between three rooms is measured according to National Standard Method, calculate public further according to air formaldehyde concentration
Formula C=A*T/V0Conversion is obtained, and the concentration of formaldehyde in three rooms is respectively 0.05mg/m3, 0.242 mg/m3, 0.218 mg/m3。
Contrast the result of two methods, it is seen then that the result of air formaldehyde self testing kit, meet the requirement of half-quantitative detection, its
Result is close with the measurement result of National Standard Method, scientific with it.This method provide a kind of relatively simple self-testing method.
The above, is only presently preferred embodiments of the present invention, and not technical scope of the invention is imposed any restrictions,
Therefore the change or modification that claim under this invention and specification are done in every case, should all belong to the scope that patent of the present invention covers
Within.
Claims (4)
1. a kind of air formaldehyde self testing kit, it is characterised in that：Including absorbent, acidulant, diluent, developer and colorimetric card；
Described absorbent is phenol reagent, and described acidulant is phosphorus pentoxide powder, and described diluent is pure water, and described is aobvious
Toner is ammonium ferric sulfate；Described acidulant, and sealing preserve simultaneously are added with the phenol reagent；
After the phosphorus pentoxide is mixed in the diluent, its mass concentration is 25g/L.
2. air formaldehyde self testing kit according to claim 1, it is characterised in that：Described absorbent and described diluent
The mixed mass concentration of pure water is 0.03mg/mL.
3. air formaldehyde self testing kit according to claim 1, it is characterised in that：Described developer is for mass concentration
1.5% ammonium ferric sulfate.
4. air formaldehyde self testing kit according to claim 1, it is characterised in that：Described colorimetric card preparation process is：Will
The absorbent and acidulant are diluted simultaneously by the diluent, with the absorbent after the formaldehyde of various concentrations and above-mentioned dilution
Reaction, by reaction solution with the chromogenic reagent, standard color comparison card is prepared according to colour developing degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611950.3A CN103698324B (en) | 2013-11-27 | 2013-11-27 | Air formaldehyde self testing kit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310611950.3A CN103698324B (en) | 2013-11-27 | 2013-11-27 | Air formaldehyde self testing kit |
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| Publication Number | Publication Date |
|---|---|
| CN103698324A CN103698324A (en) | 2014-04-02 |
| CN103698324B true CN103698324B (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310611950.3A Expired - Fee Related CN103698324B (en) | 2013-11-27 | 2013-11-27 | Air formaldehyde self testing kit |
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| CN (1) | CN103698324B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021597A (en) * | 2014-04-30 | 2015-11-04 | 张晓咪 | Air formaldehyde detection device |
| CN104390959A (en) * | 2014-11-06 | 2015-03-04 | 常熟市苏常工程质量检测有限公司 | Method for detecting content of formaldehyde in house |
| CN104436985A (en) * | 2014-11-18 | 2015-03-25 | 苏州东辰林达检测技术有限公司 | Formaldehyde absorbing material and preparation method thereof |
| CN105352950A (en) * | 2015-10-24 | 2016-02-24 | 佛山市奥朗科技有限公司 | Detection medicament and method for rapid detection of formaldehyde content in air |
| CN107525801A (en) * | 2017-07-17 | 2017-12-29 | 贵州金洋检测工程有限公司 | A kind of formaldehyde in air content assaying method |
| CN108514867B (en) * | 2018-04-18 | 2020-09-22 | 北京化工大学 | Preparation of sodium alginate gel beads for detecting formaldehyde |
| CN111504991A (en) * | 2020-04-30 | 2020-08-07 | 军事科学院军事医学研究院环境医学与作业医学研究所 | Kit for detecting formaldehyde gas |
| CN113884482A (en) * | 2020-07-02 | 2022-01-04 | 海南光宇生物科技有限公司 | Formaldehyde self-testing box with biological cellulose membrane as reagent carrier |
| CN112858279A (en) * | 2021-02-04 | 2021-05-28 | 江苏中烟工业有限责任公司 | Method for rapidly determining residual amount of formaldehyde in water-based adhesive |
| CN113125426A (en) * | 2021-04-07 | 2021-07-16 | 山西工程职业学院 | Use method of portable accurate formaldehyde analysis box |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590200A (en) * | 2012-02-16 | 2012-07-18 | 北京六角体科技发展有限公司 | Formaldehyde gas detection kit and method for detecting formaldehyde |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2004111635A1 (en) * | 2003-06-12 | 2006-07-27 | 株式会社東洋発酵 | Composition for aldehyde detection |
| CN1661360A (en) * | 2004-02-27 | 2005-08-31 | 上海塞艾生物科技有限公司 | One-off simple rapid test kit for color matching formaldehyde and preparation method |
| CN101029870A (en) * | 2006-02-28 | 2007-09-05 | 张佃志 | Methanal fast-inspecting reagent unit and its production |
| CN102565043A (en) * | 2011-12-16 | 2012-07-11 | 邯郸派瑞电器有限公司 | Kit capable of quickly detecting formaldehyde in air |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590200A (en) * | 2012-02-16 | 2012-07-18 | 北京六角体科技发展有限公司 | Formaldehyde gas detection kit and method for detecting formaldehyde |
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| CN103698324A (en) | 2014-04-02 |
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