CN111855895A - Indoor air quality detection method - Google Patents
Indoor air quality detection method Download PDFInfo
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- CN111855895A CN111855895A CN201910355504.8A CN201910355504A CN111855895A CN 111855895 A CN111855895 A CN 111855895A CN 201910355504 A CN201910355504 A CN 201910355504A CN 111855895 A CN111855895 A CN 111855895A
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010521 absorption reaction Methods 0.000 claims abstract description 30
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 239000003463 adsorbent Substances 0.000 claims abstract description 11
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000002835 absorbance Methods 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000002309 gasification Methods 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229940093429 polyethylene glycol 6000 Drugs 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 3
- 239000012855 volatile organic compound Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of air quality detection, in particular to an indoor air quality detection method, which comprises the following steps: s1, collecting, extracting and detecting benzene in the air by using an activated carbon tube; s2, collecting, extracting and detecting formaldehyde in the air by using a bubble absorption tube; s3, collecting, extracting and detecting ammonia in the air by adopting an absorption pipe storing dilute sulfuric acid absorption liquid; and S4, sampling and detecting the TVOC in the air by using an adsorption tube filled with Tenax-ta adsorbent. According to the invention, benzene is collected through the activated carbon tube, formaldehyde is collected through the bubble absorption tube, ammonia is collected through dilute sulfuric acid absorption liquid, TVOC is sampled through the Tenax-ta adsorbent, and the absorbance of the sample is detected, so that the detection effect is good, the detection method is quick and accurate, simple, easy to realize and wide in detection range, and the safety of residents is ensured, including omnibearing detection of benzene, formaldehyde, ammonia and TVOC.
Description
Technical Field
The invention relates to the technical field of air quality detection, in particular to an indoor air quality detection method.
Background
With the development of society, the living conditions of residents are improved, and the environmental requirements of residents are also improved, because more than 80% of the time of residents is spent indoors, but the relative environment is reduced. The health of people is directly influenced by the quality of indoor environment. Due to the energy-saving requirement in the world, the air tightness of the building is enhanced, and the indoor air circulation is influenced. The wide indoor application of organic synthetic materials leads to the emission of a large amount of volatile organic compounds, seriously pollutes the residential environment of residents, and among the deteriorated indoor air components, the volatile organic compounds have the most serious influence on the health of people.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an indoor air quality detection method.
In order to achieve the purpose, the invention adopts the following technical scheme:
an indoor air quality detection method comprises the following steps:
s1, collecting, extracting and detecting benzene in the air by using an activated carbon tube;
s2, collecting, extracting and detecting formaldehyde in the air by using a bubble absorption tube;
s3, collecting, extracting and detecting ammonia in the air by adopting an absorption pipe storing dilute sulfuric acid absorption liquid;
And S4, sampling and detecting the TVOC in the air by using an adsorption tube filled with Tenax-ta adsorbent.
Preferably, in the S1, the benzene content is obtained by separating with a polyethylene glycol 6000 chromatographic column and finally detecting with a hydrogen flame ionization detector.
Preferably, in S2, the bubble absorption tube contains 4 to 6ml of phenol reagent absorption solution, a standard curve is prepared, the sample is transferred into the solution, the absorption tube is washed, the total volume is kept at 8 to 12ml after combination, simultaneously the absorbance of the sample is detected, and finally the concentration of the sample is calculated according to the standard curve.
Preferably, in the step S3, the diluted sulfuric acid is 10 to 15ml, a standard curve is prepared, the sample is transferred into the solution, the absorbance of the sample is detected, and finally the concentration of the sample is calculated according to the standard curve
Preferably, the Tenax-ta adsorbent is 0.2-0.5mg, the sampling speed is 0.5-0.8L/min, 8-10L of gas is collected, the atmospheric pressure and temperature during sampling are recorded, the sample is stored for 10-14d, the separated sample is directly blown into a 90-110ml syringe by using high-purity nitrogen, then 1-2ml of gas sample is sucked by using a small syringe and injected into a gasification chamber of a gas chromatograph, and separation is carried out after shunting.
Preferably, the equipment used comprises an atmospheric sampler, an activated carbon sampling tube, a volumetric flask, a chromatographic column and a gas chromatograph.
Compared with the prior art, the invention provides an indoor air quality detection method, which has the following beneficial effects:
the detection method is simple, easy to implement and wide in detection range, and can be used for comprehensively detecting benzene, formaldehyde, ammonia and TVOC, so that the safety of resident houses is ensured.
According to the invention, benzene is collected through the activated carbon tube, formaldehyde is collected through the bubble absorption tube, ammonia is collected through dilute sulfuric acid absorption liquid, TVOC is sampled through the Tenax-ta adsorbent, and the absorbance of the sample is detected, so that the detection effect is good, and the detection is rapid and accurate.
Drawings
Fig. 1 is a schematic diagram of an indoor air quality detection method according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, a method for detecting indoor air quality includes the following steps:
s1, collecting, extracting and detecting benzene in the air by using an activated carbon tube;
s2, collecting, extracting and detecting formaldehyde in the air by using a bubble absorption tube;
s3, collecting, extracting and detecting ammonia in the air by adopting an absorption pipe storing dilute sulfuric acid absorption liquid;
and S4, sampling and detecting the TVOC in the air by using an adsorption tube filled with Tenax-ta adsorbent.
And in the S1, separating by using a polyethylene glycol 6000 chromatographic column, and finally detecting by using a hydrogen flame ionization detector to obtain the benzene content.
In the S2, 4-6ml of phenol reagent absorption liquid is filled in the bubble absorption tube, a standard curve is made, the sample is transferred into the solution, the absorption tube is cleaned, the total volume is kept at 8-12ml after combination, the absorbance of the sample is detected at the same time, and finally the concentration of the sample is calculated according to the standard curve.
In the S3, the diluted sulfuric acid is 10-15ml, a standard curve is made, the sample is transferred into the solution, the absorbance of the sample is detected, and finally the concentration of the sample is calculated according to the standard curve
In the S4, the Tenax-ta adsorbent is 0.2-0.5mg, the sampling speed is 0.5-0.8L/min, 8-10L of gas is collected, the atmospheric pressure and temperature during sampling are recorded, the sample is stored for 10-14d, the separated sample is directly blown into a 90-110ml needle cylinder by using high-purity nitrogen, then 1-2ml of gas sample is sucked by using a small needle cylinder and injected into a gasification chamber of a gas chromatograph, and separation is carried out after shunting.
The used equipment comprises an atmospheric sampler, an activated carbon sampling tube, a volumetric flask, a chromatographic column and a gas chromatograph.
When in use, the invention comprises the following steps: s1, collecting, extracting and detecting benzene in the air by using an activated carbon tube; s2, collecting, extracting and detecting formaldehyde in the air by using a bubble absorption tube; s3, collecting, extracting and detecting ammonia in the air by adopting an absorption pipe storing dilute sulfuric acid absorption liquid; s4, sampling and detecting the TVOC in the air by adopting an adsorption tube filled with Tenax-ta adsorbent; gather through activated carbon tube benzene, bubble absorption tube formaldehyde is gathered, adopt the dilute sulphuric acid absorption liquid to gather ammonia, adopt Tenax-ta adsorbent to sample TVOC to absorbance to the sample detects, detection effect is good, and is quick accurate, and detection method is simple, easily realizes, and detection range is wide, includes carrying out the omnidirectional to benzene, formaldehyde, ammonia and TVOC and detects, has guaranteed resident's house safety.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An indoor air quality detection method is characterized by comprising the following steps:
s1, collecting, extracting and detecting benzene in the air by using an activated carbon tube;
s2, collecting, extracting and detecting formaldehyde in the air by using a bubble absorption tube;
s3, collecting, extracting and detecting ammonia in the air by adopting an absorption pipe storing dilute sulfuric acid absorption liquid;
and S4, sampling and detecting the TVOC in the air by using an adsorption tube filled with Tenax-ta adsorbent.
2. The indoor air quality detection method as claimed in claim 1, wherein in the S1, the separation is performed by using a polyethylene glycol 6000 chromatographic column, and finally, a hydrogen flame ionization detector is used for detection, so as to obtain the benzene content.
3. The indoor air quality detection method as claimed in claim 1, wherein in S2, the bubble absorption tube is filled with 4-6ml of phenol reagent absorption liquid, a standard curve is prepared, the sample is transferred into the solution, the absorption tube is cleaned, the total volume is kept at 8-12ml after combination, the absorbance of the sample is detected, and finally the concentration of the sample is calculated according to the standard curve.
4. The indoor air quality detection method as claimed in claim 1, wherein in the step S3, the diluted sulfuric acid is 10-15ml, a standard curve is prepared, the sample is transferred into the solution, the absorbance of the sample is detected, and finally the concentration of the sample is calculated according to the standard curve.
5. The indoor air quality detection method according to claim 1, wherein the Tenax-ta adsorbent is 0.2-0.5mg, the sampling speed is 0.5-0.8L/min, 8-10L of gas is collected, the atmospheric pressure and temperature during sampling are recorded, the sample is stored for 10-14d, the separated sample is directly blown into a 90-110ml syringe by using high-purity nitrogen, then 1-2ml of gas sample is sucked by using a small syringe and injected into a gasification chamber of a gas chromatograph, and separation is carried out after shunting.
6. The indoor air quality detection method according to claim 1, wherein the used equipment comprises an atmospheric sampler, an activated carbon sampling tube, a volumetric flask, a chromatographic column and a gas chromatograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355504.8A CN111855895A (en) | 2019-04-29 | 2019-04-29 | Indoor air quality detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910355504.8A CN111855895A (en) | 2019-04-29 | 2019-04-29 | Indoor air quality detection method |
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| CN111855895A true CN111855895A (en) | 2020-10-30 |
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| CN201910355504.8A Pending CN111855895A (en) | 2019-04-29 | 2019-04-29 | Indoor air quality detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640441A (en) * | 2021-08-26 | 2021-11-12 | 珠海鼎正国信科技有限公司 | Microfluidic chromatographic separation system and separation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288455A (en) * | 2011-05-04 | 2011-12-21 | 常州市建筑科学研究院股份有限公司 | Integrated adsorbing pipe for benzene and total volatile organic compounds in indoor air and detecting method thereof |
| CN107703128A (en) * | 2017-09-08 | 2018-02-16 | 广州市赛特检测有限公司 | The quick determination method of ammonia in a kind of air |
| CN108387649A (en) * | 2017-11-21 | 2018-08-10 | 广东中汇认证检测有限公司 | Detection method that is a kind of while detecting a variety of pernicious gases in workplace |
| CN109085130A (en) * | 2018-07-04 | 2018-12-25 | 湖州知辉进出口贸易有限公司 | A kind of measuring method of formaldehyde in air content |
-
2019
- 2019-04-29 CN CN201910355504.8A patent/CN111855895A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288455A (en) * | 2011-05-04 | 2011-12-21 | 常州市建筑科学研究院股份有限公司 | Integrated adsorbing pipe for benzene and total volatile organic compounds in indoor air and detecting method thereof |
| CN107703128A (en) * | 2017-09-08 | 2018-02-16 | 广州市赛特检测有限公司 | The quick determination method of ammonia in a kind of air |
| CN108387649A (en) * | 2017-11-21 | 2018-08-10 | 广东中汇认证检测有限公司 | Detection method that is a kind of while detecting a variety of pernicious gases in workplace |
| CN109085130A (en) * | 2018-07-04 | 2018-12-25 | 湖州知辉进出口贸易有限公司 | A kind of measuring method of formaldehyde in air content |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640441A (en) * | 2021-08-26 | 2021-11-12 | 珠海鼎正国信科技有限公司 | Microfluidic chromatographic separation system and separation method thereof |
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