Method for testing filtering capacity of allergens in detection vehicle

Abstract

The invention discloses a method for testing the filtering capacity of allergens in a vehicle. The method comprises the following steps: preparing a target allergen suspension; arranging a vehicle position and a sampling point in the test cabin; background control of temperature, humidity and cleanliness of the test cabin; atomizing the allergen suspension, introducing the atomized allergen suspension into a test chamber, and uniformly mixing; collecting allergen concentrations inside and outside the sample car in the test cabin; the concentration ratio (I / Q) of the allergen aerosol in the vehicle to the allergen aerosol outside the vehicle is calculated by testing the concentration of the allergen in the collected gas, the filtering capacity of the allergen in the vehicle is graded according to the concentration ratio (I / Q), and each grade is graded according to the range corresponding to the concentration ratio (I / Q) to judge the filtering capacity of the allergen in the vehicle.

Description

Technical Field

[0001] The invention relates to the field of automobile purification and filtration, in particular to a test method for detecting the filtering ability of allergens in a car. Background Art

[0002] In recent years, my country's automobile industry has developed rapidly, the national economic consumption level has increased significantly, and the number of domestic cars has increased rapidly. It has now become the world's largest potential automobile market. As a means of transportation that is used frequently in daily life, the air quality inside the car has also become a hot topic for consumers. In addition to volatile pollution issues such as in-car materials, consumers are also concerned about whether the air purification system equipped in the car can better control air pollution from other sources and protect the health of drivers and passengers.

[0003] At present, the only basis for evaluating the quality of the interior of a car in China is the "Guidelines for the Evaluation of Passenger Car Interior Air Quality" (GB / T 27630-2011). This standard mainly stipulates the concentration requirements of organic matter (benzene, toluene, xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde, acrolein) in the air inside the car. The main sources of organic matter are the parts and accessories of passenger cars. At this stage, consumers are paying more and more attention to environmental pollution issues, which have expanded from organic pollution generated by passenger car parts and accessories to air pollution introduced from outside the car, such as automobile exhaust, particulate matter, microorganisms and other air pollution introduced by passenger cars and the activities of drivers and passengers.

[0004] Passenger cars are commonly used in daily life, and the interior environment is relatively closed. In addition to the pollution caused by passenger car parts and accessories, there is also pollution introduced by the activities of drivers and passengers, the emission of carried items, and the exchange of air outside the car, such as particulate pollution introduced by the activities of drivers and passengers, and microbial pollution introduced by other daily necessities in the car. Regarding the pollution of in-car allergens, which is of great concern to consumers, the existing technology is still blank in the ability to detect the filtration of in-car allergens. Therefore, there is an urgent need for a test method that can effectively detect the filtration capacity of in-car allergens to provide protection for reducing the risk of allergen exposure of drivers and passengers. Summary of the invention

[0005] The purpose of the present invention is to provide a testing method that can effectively detect the allergen filtering capacity in a vehicle, so as to provide a guarantee for reducing the allergen exposure risk of drivers and passengers.

[0006] The test method for detecting the allergen filtering ability in a vehicle according to the present invention comprises the following steps:

[0007] S1. Prepare allergen suspension and put it into the aerosol generator;

[0008] S2. Move the prototype vehicle into the test chamber, open the doors and windows; set the positions of the sampling points inside and outside the vehicle, and keep the heights of the sampling points inside and outside the vehicle consistent;

[0009] S3. Set the temperature, humidity and cleanliness of the test chamber within the preset temperature, humidity and cleanliness thresholds;

[0010] S4. Turn on the aerosol generator, atomize the allergen solution into the test chamber, and at the same time turn on the stirring fan and the circulation fan. After the spraying is completed, the stirring fan continues to stir for a preset stirring time. When the preset stirring time is reached, turn off the stirring fan, let it stand for a preset standing time, and keep the circulation fan on;

[0011] S5. Collect the concentration of the allergen aerosol at the sampling points inside and outside the vehicle to calculate the relative difference in the average concentration of the allergen aerosol at the sampling points inside and outside the vehicle;

[0012] S6. Close the doors and windows, start the prototype vehicle, turn on the in-vehicle air conditioner and air purification system. According to the preset purification time, when the preset purification time is reached, start the liquid impinger sampler to collect the concentration of the allergen aerosol inside the vehicle at the in-vehicle sampling point, and at the same time collect the concentration of the allergen aerosol at the out-vehicle sampling point;

[0013] S7. Repeat the test for a preset number of times. Take the average concentration of the allergen aerosol inside and outside the vehicle obtained in step S5 in the tests for the preset number of times to calculate the relative difference in the average concentration of the allergen aerosol inside and outside the vehicle before purification. Take the average concentration of the allergen aerosol inside and outside the vehicle obtained in step S6 in the tests for the preset number of times to calculate the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle. According to the relative difference in the average concentration of the allergen aerosol inside and outside the vehicle before purification, judge whether the result of the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle is reliable. When the relative difference ≤ the preset threshold, the result of the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle is valid. Then, classify the in-vehicle allergen filtration ability according to the concentration ratio (I / Q), and each grade is classified according to the corresponding range of the concentration ratio (I / Q) to judge the in-vehicle allergen filtration ability.

[0014] As a preferred embodiment of the present invention, the calculation formula of the concentration ratio (I / Q) is as follows: Where: the concentration ratio (I / Q) is the concentration ratio of the allergen aerosol inside and outside the vehicle; C i is the average concentration of the allergen aerosol inside the vehicle, with the unit ng / m 3 ; C q is the average concentration of the allergen aerosol outside the vehicle, with the unit ng / m 3 .

[0015] As a preferred embodiment of the present invention, the concentration of allergen aerosol at the sampling points inside and outside the vehicle is detected by enzyme-linked immunosorbent assay (ELISA).

[0016] As a preferred embodiment of the present invention, the allergen suspension is prepared by configuring with PBS-T solution containing 0.05% mass concentration of Tween-20.

[0017] As a preferred embodiment of the present invention, the test vehicle is located at the middle position of the test chamber.

[0018] As a preferred embodiment of the present invention, the distance between the sampling point outside the vehicle and the inner wall of the test chamber is (0.5 ± 0.1) m.

[0019] As a preferred embodiment of the present invention, the temperature and humidity thresholds of the test chamber are respectively: temperature: (25 ± 5) °C; humidity: (50 ± 10)% RH; the cleanliness threshold is that the background particle concentration of particles larger than 0.3 μm is < 1000 / L -1 .

[0020] As a preferred embodiment of the present invention, both the preset stirring time and the preset standing time are 5 min.

[0021] As a preferred embodiment of the present invention, the concentration of allergen aerosol at the sampling points inside and outside the vehicle in step S5 is

[0022] As a preferred embodiment of the present invention, the test is repeated a preset number of times, which is three times.

[0023] Beneficial effects

[0024] The test method for detecting the allergen filtration ability in a vehicle described in the present invention simulates an allergen - contaminated environment in a test chamber, calculates the ratio of the concentration of allergen aerosol inside the vehicle to that outside the vehicle, and classifies the levels according to the corresponding range of the concentration ratio (I / Q) to quantify the allergen filtration ability inside the vehicle. Thus, it can effectively detect the allergen filtration ability in the vehicle, provide data reference for related technologies such as the air - purification system of automobiles at the present stage, provide certain guarantee for the high - quality development of the automobile industry, and at the same time fill the technical gap in the domestic related detection technology field, providing guarantee for reducing the allergen exposure risk of vehicle occupants; In addition, by atomizing the allergen solution into the test chamber, turning on the stirring fan and the circulation fan at the same time, after the spraying is completed, the stirring fan continues to stir for a preset stirring time, turns off the stirring fan after reaching the preset stirring time, stands still for a preset standing time, and keeps the circulation fan in the on - state, it can ensure that the allergen solution in the test chamber is atomized and diffused evenly enough, further improving the accuracy of the test data, and thus further improving the ability to detect the allergen filtration in the vehicle; Furthermore, by collecting the concentration of allergen aerosol at the sampling points inside and outside the vehicle, calculating whether the relative difference of the average concentration of allergen aerosol at the sampling points inside and outside the vehicle is ≤ a preset threshold, when the relative difference ≤ the preset threshold, the result of the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to that outside the vehicle is valid, further improving the accuracy of collecting the concentration of allergen aerosol inside the vehicle at the sampling point inside the vehicle, and thus further improving the ability to detect the allergen filtration in the vehicle.

[0025] Compared with the prior art

[0026] 1. It has a wide range of applicable test target allergens, including but not limited to the following common allergen types: dust mite allergens (Der f1, Der p1), tree pollen allergens (Cry j1, Bet v1), grass pollen allergens (Amb a1, Phlp5), mold allergens (Alt a1, AveX), cockroach allergens (Bla g2), cat dander allergens (Fel d1), dog dander allergens (Canf1);

[0027] 2. Close the doors, windows, sunroof (if any) and trunk lid, etc., then turn on the in - vehicle air conditioner and the in - vehicle air purification system. After setting a certain time, start the liquid impinger sampler simultaneously to collect the allergen aerosol inside the vehicle and in the test chamber, fully reflecting the blocking effect of the whole vehicle and the purification effects of the air - conditioning system and the in - vehicle air purification system;

[0028] 3. The blocking of the whole vehicle includes the blocking effects of doors, windows, sunroof (if any) and trunk lid, etc.

[0029] 4. A performance index of concentration ratio (I / Q) is proposed to compare the in-vehicle allergen filtration performance of various passenger cars. At the same time, the in-vehicle and out-of-vehicle allergen concentrations are collected to reflect the numerical value of this index of concentration ratio (I / Q) in real time.

[0030] 5. A grading regulation is proposed. According to the test results, the in-vehicle allergen filtration ability is graded, and each grade is divided according to the corresponding range of the concentration ratio (I / Q). The grading of the concentration ratio (I / Q) of the in-vehicle allergen filtration test results is as follows:

[0031]

[0032] 6. The design of the test process is reasonable, standardized, safe, reliable, simple to operate, and the data is stable. It can objectively reflect the allergen filtration performance of various passenger cars, provide data support for product enterprises in production, import and export trade, and also provide convenience for testing laboratories, filling the technical gap in the domestic related testing technology field. It can also help consumers who are concerned about this index to give a reference basis. Description of the Drawings

[0033] Figure 1 It is a schematic flow chart of a test method for detecting the in-vehicle allergen filtration ability of the present invention. Detailed Embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] A test method for detecting the in-vehicle allergen filtration ability, as Figure 1 shown, includes:

[0037] S1. Prepare an allergen suspension and place it in an aerosol generator. Before preparing the allergen suspension, all test materials and reagents are used after being sterilized at high temperature. First, weigh 0.27 g of potassium dihydrogen phosphate (KH2PO4), 1.42 g of disodium hydrogen phosphate (Na2HPO4), 8.0 g of sodium chloride (NaCl), and 0.2 g of potassium chloride (KCl). After mixing, add 800 mL of distilled water (H2O). After fully stirring and dissolving, adjust the pH value to 7.4 with concentrated hydrochloric acid, then make up the volume to 1000 mL. Finally, sterilize it in a pressure steam sterilizer at 121 °C for 20 min and store it at 4 °C for standby. The allergen suspension is prepared with a PBS-T solution containing 0.05% (mass concentration) of Tween-20. In this test, the dust mite allergen Der f1 is used, and a passenger car (five-seater) with a relatively short purchase time is selected as the test vehicle.

[0038] S2. Move the test vehicle into the test chamber. The test vehicle is located in the middle of the test chamber, which can ensure the opening and closing of the doors and windows. Set the positions of the sampling points inside and outside the vehicle. The distance between the position of the sampling point outside the vehicle and the inner wall of the test chamber is (0.5 ± 0.1) m, and it is located on the side of the allergen aerosol inlet. The heights of the sampling points inside and outside the vehicle are kept the same, and the height of the sampling point inside the vehicle is consistent with the breathing zone height of the driver and passengers.

[0039] S3. Keep the temperature and humidity in the test chamber at (25 ± 5) °C and (50 ± 10)% RH respectively, and the cleanliness is that the background particle concentration of particles larger than 0.3 μm is < 1000 / L -1 .

[0040] S4. Turn on the aerosol generator, atomize the allergen solution into the test chamber, and at the same time turn on the stirring fan and the circulation fan. After the spraying is completed, the stirring fan continues to stir for 5 min. After 5 min, turn off the stirring fan, let it stand for 5 min, and keep the circulation fan on.

[0041] S5. Collect the concentration of the allergen aerosol at the sampling points inside and outside the vehicle to calculate whether the relative difference in the average concentration of the allergen aerosol at the sampling points inside and outside the vehicle is ≤ the preset threshold, and the preset threshold is set to 5%; when the relative difference ≤ 5%, the concentration of the allergen aerosol at the sampling points inside and outside the vehicle is 100 ng / ~500 ng / . The concentration of the allergen aerosol refers to the mass concentration, and the mass concentration of the allergen aerosol concentration can be detected by enzyme-linked immunosorbent assay (ELISA).

[0042] S6. Close the doors, windows, sunroof (if any), and trunk lid, etc. Start the prototype vehicle, turn on the in-vehicle air conditioner and air purification system, set the purification time to 20 minutes. After reaching the 20-minute purification time, start the liquid impinger sampler to collect the concentration of allergen aerosol inside the vehicle at the sampling point inside the vehicle, and simultaneously collect the concentration of allergen aerosol at the sampling point outside the vehicle; the concentration of allergen aerosol refers to the mass concentration, and the mass concentration of the allergen aerosol concentration can be detected by enzyme-linked immunosorbent assay (ELISA).

[0043] S7. Repeat the test three times. Take the average value of the concentration of allergen aerosol inside the vehicle obtained in step S5 in the three tests as 446.572 ng / m 3 , and the average value of the concentration of allergen aerosol outside the vehicle as 447.373 ng / m 3 . Therefore, the calculated result of the relative difference is equal to 1.37%, which meets the requirement that the relative difference result ≤ 5%. So, it is judged that the result of the concentration ratio (I / Q) of allergen aerosol inside the vehicle and outside the vehicle is valid. Take the average value of the concentration of allergen aerosol inside the vehicle obtained in step S6 in the three tests as 7.366 ng / m 3 , and the average value of the concentration of allergen aerosol outside the vehicle as 429.600 ng / m 3 . Through the concentration ratio formula, the calculated concentration ratio (I / Q) is equal to 1.71%. Wherein in the formula: the concentration ratio (I / Q) is the concentration ratio of allergen aerosol inside and outside the vehicle; C i is the average value of the concentration of allergen aerosol inside the vehicle, with the unit ng / m 3 ; C q is the average value of the concentration of allergen aerosol outside the vehicle, with the unit ng / m 3 . The concentration ratio (I / Q) of 1.71% is within grade A in the concentration ratio (I / Q) grading table of the in-vehicle allergen filtration test result. Therefore, it can be judged that the in-vehicle allergen filtration ability is grade A.

[0044] In this test, the dust mite allergen Der f1 is selected as an example, and other types of allergens can refer to this method.

[0045] Example 2

[0046] A test method for detecting the in-vehicle allergen filtration ability, including:

[0047] S1. Prepare the allergen suspension and place it in the aerosol generator. Before preparing the allergen suspension, all experimental materials and reagents are used after being sterilized at high temperature. First, weigh 0.27 g of potassium dihydrogen phosphate (KH2PO4), 1.42 g of disodium hydrogen phosphate (Na2HPO4), 8.0 g of sodium chloride (NaCl), and 0.2 g of potassium chloride (KCl). After mixing, add 800 mL of distilled water (H2O). After fully stirring and dissolving, adjust the pH value to 7.4 with concentrated hydrochloric acid, then make up the volume to 1000 mL. Finally, sterilize it in a pressure steam sterilizer at 121 °C for 20 min and store it at 4 °C for later use. The allergen suspension is prepared with PBS-T solution containing 0.05% (mass concentration) of Tween-20. In this experiment, the tree pollen allergen Cry j1 is used, and a passenger car (five-seater) with a relatively short purchase time is selected as the test vehicle.

[0048] S2. Move the test vehicle into the test chamber. The test vehicle is located in the middle of the test chamber, which can ensure the opening and closing of the doors and windows. Set the positions of the sampling points inside and outside the vehicle. The distance between the position of the sampling point outside the vehicle and the inner wall of the test chamber is (0.5 ± 0.1) m, and it is located on the side of the allergen aerosol inlet. The heights of the sampling points inside and outside the vehicle are kept the same, and the height of the sampling point inside the vehicle is consistent with the breathing zone height of the driver and passengers.

[0049] S3. Keep the temperature and humidity in the test chamber at (25 ± 5) °C and (50 ± 10)% RH respectively, and the cleanliness is that the background particle concentration of particles larger than 0.3 μm is < 1000 / L -1 .

[0050] S4. Turn on the aerosol generator to atomize the allergen solution into the test chamber. At the same time, turn on the stirring fan and the circulation fan. After the spraying is completed, the stirring fan continues to stir for 5 min. After reaching 5 min, turn off the stirring fan and let it stand for 5 min, and keep the circulation fan turned on.

[0051] S5. Collect the concentration of the allergen aerosol at the sampling points inside and outside the vehicle to calculate whether the relative difference in the average concentration of the allergen aerosol at the sampling points inside and outside the vehicle is ≤ the preset threshold. The preset threshold is set to 5%. When the relative difference ≤ 5%, the concentration of the allergen aerosol at the sampling points inside and outside the vehicle is 100 ng / ~500 ng / . The concentration of the allergen aerosol refers to the mass concentration, and the mass concentration of the allergen aerosol concentration can be detected by enzyme-linked immunosorbent assay (ELISA).

[0052] S6. Close the doors, windows, sunroof (if any), and trunk lid, etc. Start the prototype vehicle, turn on the in-vehicle air conditioner and air purification system, set a purification time of 20 minutes. After reaching the 20-minute purification time, start the liquid impinger sampler, and collect the concentration of allergen aerosol inside the vehicle at the sampling point position inside the vehicle, and at the same time collect the concentration of allergen aerosol at the sampling point position outside the vehicle; the concentration of allergen aerosol refers to the mass concentration, and the mass concentration of the allergen aerosol concentration can be detected by enzyme-linked immunosorbent assay (ELISA).

[0053] S7. Repeat the test three times. Take the average value of the concentration of allergen aerosol inside the vehicle obtained in step S5 in the three tests as 496.581 ng / m 3 , and the average value of the concentration of allergen aerosol outside the vehicle is 498.103 ng / m 3 . Therefore, the calculation result of the relative difference is equal to 2.35%, which meets the requirement of relative difference result ≤ 5%. Therefore, it is judged that the concentration ratio (I / Q) result of the allergen aerosol inside the vehicle and outside the vehicle is valid. Take the average value of the concentration of allergen aerosol inside the vehicle obtained in step S6 in the three tests as 9.659 ng / m 3 , and the average value of the concentration of allergen aerosol outside the vehicle is 489.304 ng / m 3 . Through the concentration ratio formula, the calculated concentration ratio (I / Q) is equal to 2.82%. Wherein in the formula: the concentration ratio (I / Q) is the concentration ratio of the allergen aerosol inside and outside the vehicle; C i is the average value of the concentration of allergen aerosol inside the vehicle, with the unit ng / m 3 ; C q is the average value of the concentration of allergen aerosol outside the vehicle, with the unit ng / m 3 . The concentration ratio (I / Q) of 2.82% is within Class B in the concentration ratio (I / Q) grading table of the in-vehicle allergen filtration test result. Therefore, it can be judged that the in-vehicle allergen filtration ability is Class B.

[0054] In this test, the tree pollen allergen Cry j1 is selected as an example, and other types of allergens can refer to this method.

[0055] The above embodiments are only used to illustrate the detailed solutions of the present invention. The present invention is not limited to the above detailed solutions, that is, it does not mean that the present invention must rely on the above detailed solutions to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent replacement of each raw material of the product of the present invention, the addition of auxiliary components, and the selection of specific methods, etc., are all within the protection scope and disclosure scope of the present invention.

Claims

1. A test method for detecting the filtering ability of in-vehicle allergens, comprising the following steps: S1. Prepare an allergen suspension and place it in an aerosol generator; S2. Move the sample vehicle into the test chamber and open the doors and windows; Set the positions of the sampling points inside and outside the vehicle, and keep the heights of the sampling points inside and outside the vehicle consistent; S3. Set the temperature, humidity and cleanliness of the test chamber within the preset temperature, humidity and cleanliness thresholds; S4. Turn on the aerosol generator to atomize the allergen solution into the test chamber. At the same time, turn on the stirring fan and the circulation fan. After the spraying is completed, the stirring fan continues to stir for a preset stirring time. When the preset stirring time is reached, turn off the stirring fan, let it stand for a preset standing time, and keep the circulation fan on; S5. Collect the concentration of the allergen aerosol at the sampling points inside and outside the vehicle to calculate the relative difference in the average concentration of the allergen aerosol at the sampling points inside and outside the vehicle; S6. Close the doors and windows, start the sample vehicle, turn on the in-vehicle air conditioner and the air purification system. After reaching the preset purification time according to the preset purification time, start the liquid impinger sampler to collect the concentration of the allergen aerosol inside the vehicle at the sampling point inside the vehicle, and at the same time collect the concentration of the allergen aerosol at the sampling point outside the vehicle; S7. Repeat the test for a preset number of times. Take the average concentration of the allergen aerosol inside and outside the vehicle obtained in step S5 in each of the preset number of tests to calculate the relative difference in the average concentration of the allergen aerosol inside and outside the vehicle before purification. Take the average concentration of the allergen aerosol inside and outside the vehicle obtained in step S6 in each of the preset number of tests to calculate the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle. According to the relative difference in the average concentration of the allergen aerosol inside and outside the vehicle before purification, judge whether the result of the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle is reliable. When the relative difference ≤ the preset threshold, the result of the concentration ratio (I / Q) of the allergen aerosol inside the vehicle to the allergen aerosol outside the vehicle is valid. Then, classify the in-vehicle allergen filtering ability according to the concentration ratio (I / Q), and each level is classified according to the corresponding range of the concentration ratio (I / Q) to judge the in-vehicle allergen filtering ability.

2. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, wherein, The concentration ratio (I / Q) calculation formula is as follows: Concentration ratio (I / Q) = × 100%, where: the concentration ratio (I / Q) is the concentration ratio of the allergen aerosol inside and outside the vehicle; is the average concentration of the allergen aerosol inside the vehicle, with the unit ng / ; is the average concentration of the allergen aerosol outside the vehicle, with the unit ng / .

3. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, wherein The concentration of the allergen aerosol at the sampling points inside and outside the vehicle is detected by enzyme-linked immunosorbent assay (ELISA).

4. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The allergen suspension is prepared by configuring with a PBS-T solution containing 0.05% mass concentration of Tween-20.

5. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The sample vehicle is located in the middle of the test chamber.

6. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, wherein The distance between the position of the sampling point outside the vehicle and the inner wall of the test chamber is (0.5 ± 0.1) m.

7. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The temperature and humidity thresholds of the test chamber are respectively: temperature: (25 ± 5) °C; Humidity: (50 ± 10)%RH; the cleanliness threshold is that the background particle concentration of particles larger than 0.3 μm <.

8. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The preset stirring time and the preset standing time are both 5 min.

9. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The allergen aerosol concentration at the sampling points inside and outside the vehicle in step S5 is 100 ng / ~500 ng / .

10. The test method for detecting the allergen filtration ability in a vehicle according to claim 1, characterized in that, The preset number of times for repeating the test is three times.

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