TWI292724B - - Google Patents

Description

1292724 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a device capable of reducing gas and county conditions, in particular, a type of smashing and smashing hole smashing hole structure * utilizing a residual layer and moisturizing Jumping under the compartment TM== Wet compartment can reduce the airborne particle bomb-like device, which has high accuracy, long sampling time, and can effectively suppress the rebound of the 111-state gas-gel particles, and the cost is low. A wide range of advantages and effects. μ [Prior Art] Traditionally, the amount of gas gel is measured when sampling large particle size gas in the workplace. However, a gas gel containing _ 、, 心 疋 2, and 毋 substances may deposit in specific areas of the respiratory tract and respiratory tract depending on its physical properties. However, some gas gels are too large in size to penetrate and deposit in specific areas of the breathing tube. For example, a Shiqi gum containing a large aerodynamic diameter, due to its strong inertial sedimentation, rarely reaches the alveolar region and causes silicosis. Therefore, when measuring the weight concentration of helium-containing rubber, it should be excluded. The human respiratory tube can be divided into three parts to discuss. 1. The suction channel is in the initial area of the head. Second, the bronchial area, including the trachea and ciliated area. Third, the alveolar area, including the lack of cilia and lung vesicles. According to the current international definition criteria, the diameter can be divided into three parts: Inspirable or Inhalable Fraction, Thoracic Fraction, Respirable Fraction, and Respirability Curve. The 50% cut-off size (Cut-off Size 1292724) is 4 //m, while the thoracicity is 10 //m, and the inhalable part is around 100 // m. For the above reasons, it is necessary to develop a split sampler to measure a representative gas gel concentration.

For the labor sector, the sampling of the operating environment is mainly to assess the health hazards of aerosol deposition in the human respiratory system. For example, it is possible to assess the amount of airborne dust particles in the working environment of workers. The well-splitting split sampler can accurately estimate the harm of the gas gel to the human body, in addition to providing better environmental gas gel sampling. The collecting mechanism of the general split-sampling impactor is as follows: The airflow turns through the impact plate, leaving the inertial gas gel on the impact plate, and the airflow then reaches the bottom filter paper, and the pores of the filter paper are discharged out of the sampler, and the rest The gas with less inertia will be collected on the filter paper. Please refer to the first figure. The traditional impact plate 90 is coated with oil or grease on the surface. In practice, it can be Shixia 91. The main purpose is to increase the surface adhesion of the impact plate 90. Adhesion Energy, and the use of deformation, dissipate gas gel 92 kinetic energy, reduce the problem of gas gel 92 bounce, and has been widely used. The most effective film not only reduces the bounce of the gas gel 92, but also reduces the load of the gas gel 92. However, when the gas gel 92 continuously enters the eucalyptus oil 91, the process thereof is as shown in the second A diagram and the second B diagram, and the gas gel 92 will stay inside the eucalyptus oil 91, since it is not soluble in the eucalyptus oil 91, The amount of these gas gels 92 will always accumulate. When the gas gel 92 is loaded to a certain extent, as shown in the second C diagram, the gas gel 92 will directly hit the uppermost layer of the impact plate 90 of the gas gel 92 1292724, and bounce off, the problem of the gas gel 92 bounce, will The accuracy of the sampled data is greatly reduced. In other words, suppose there are 1000 gas gels 92. After hitting the oil 91, the first 500 are collected, but the last 500 are rebounded, and the error is extremely large. Secondly, the conventional split-sampler is mainly used for oil or grease 91, and cannot be collected and sampled for a long time. Therefore, the collection time is too short, which is another disadvantage.

In addition, if the above-mentioned eucalyptus oil 91 is changed to a low-volatile oil, the viscosity is low, so if the sizing sampler is inclined or swayed (for example, a person wearing the sampler moves), the liquid oil will Overflow, resulting in inconvenient and inaccurate sampling. Therefore, it is necessary to develop new technologies to solve the above drawbacks. SUMMARY OF THE INVENTION The main object of the present invention is to provide a split-shock sampling device capable of reducing the bounce of airborne particles, which has a buffer layer and a concave cavity under the moisturizing barrier, and a buffer layer and a moisturizing barrier. The splitting and impact sampling device capable of reducing the suspension of the suspended particles can have high accuracy. A second object of the present invention is to provide a splitting and impact sampling device capable of reducing the suspension of airborne particles, which has a long sampling time, is not afraid of the sampling of the gas gel, and can sample the load for a long time. Still another object of the present invention is to provide a split-diameter sampling device which can reduce the suspension of airborne particles, which is not afraid of vibration and can operate normally even when worn on a worker who is constantly moving. Still another object of the present invention is to provide a split-diameter sampling device capable of reducing the suspension of an airborne particle bomb 1292724, which has a low cost and a wide application range. The present invention provides a splitting impact sampling device capable of reducing the bounce of airborne particles, comprising: a body having an inlet end and an outlet end having a central passage and a receiving recess therein, the inlet end being provided At least one nozzle hole; at least one buffer layer is filled on the receiving recess, the buffer layer is a semi-solid solution material containing moisture and maintaining a fixed shape;

a moisturizing barrier layer on the buffer layer for reducing the drying phenomenon of the buffer layer. The above objects and advantages of the present invention will be readily understood from the following detailed description of the embodiments of the invention. The present invention will be described in detail below with reference to the following embodiments: [Embodiment] Please refer to the third, fourth, and fifth figures, and the present invention is a split-diameter sampling device capable of reducing the suspension of airborne particles. The utility model comprises: a body 1 having an inlet end 1A and an outlet end 1B, at least one central passage 11 and a receiving recess 12, wherein the inlet end 1A is provided with a single or a plurality of nozzle holes 21. In practice, the body 1 can include a base 10 and a nozzle plate 20 that can be fitted over the base 10. The central passage 11 and the receiving recess 12 are attached to the base 10, and the aforementioned single or multiple The nozzle holes 21 are attached to the nozzle plate 20; further, the end portion of the central passage 11 is funnel-shaped in the present invention, but may be non-funnel. A buffer layer 30 is attached to the concave recessed receiving portion 12, and the buffer layer 30 is water-containing and can maintain a semi-solid solution of the fixed body 1292724 material; a moisturizing, compartment 40, draped The film is on the buffer layer 30 to reduce the drying phenomenon of the buffer layer 30. The principle of operation of the present invention is mainly achieved by the use of the buffer layer 30 and the moisturizing barrier layer 4〇. Referring to Figure 6A, when a plurality of gas gels 92 are continuously driven, the gas gel 92 will penetrate the moisture barrier layer 40 and enter the buffer layer 30 (as shown in Figure 6B) due to the buffer layer. 3〇 has a considerable amount of water, water-soluble gas gel 92 will gradually dissolve in water, as shown in Figure c. 4> Valley in the buffer layer 30 of the water, as shown in the sixth d. As long as the new gas gel 92 is continuously inserted within the buffer layer 30, there is no problem that the gas gel 92 bounces. In this embodiment, the buffer layer 30 is selected from the group consisting of hydrated Trypticase Soy Agar (or TSA), other agar (Agar) containing water, colloid, and liquid-containing other species. Solvent chemical material, water-injured moon scorpion, moisture-containing low-volatile oil; and the moisturizing barrier 4〇孀_ is selected from the group of silicon 91 91, low volatile oil, low volatility Liquor' In the preferred embodiment of the invention, Shixia 91 is used. Referring to the seventh figure, the whole experimental equipment includes: an L-shaped tube 81, a water-borne aerosol suspended particle generating device 82, a neutral and charged device 823, a gas/melon generating device 83, a filter Gong 85, and an exhaust gas. Port 86 and a pneumatic particle size were detected as 87. The present invention is mounted on a passage leading to a pneumatic particle size detector 87. The water-soluble aerosol-sustaining particle generating device 82 is located at the left of the L-shaped tube 81 and has an ultrasonic grouping nozzle (UHras〇nic Atomizing 1292724)

Nozzle) 821, a feeder 822 and the neutralization charging device 823. The feeder 822 delivers the desired solution, and the injected liquid is broken into tiny droplets by the ultrasonic atomizing nozzle 821, and after being diluted or dried, it becomes the required test air suspension. particle. The droplet size distribution formed is affected by the frequency of the nozzle, the surface tension of the liquid, and the density of the liquid, and the frequency of the nozzle is the most important factor determining the particle size of the droplet. The frequency of the mouthpiece used in this system is 120 KHz' and the median diameter of the droplets produced is about 20 // m. Since the newly generated aerosol particles tend to carry a relatively high amount of electricity, in order to prevent the experimental results from being affected by the charging of the particles and to improve the stability of the experimental system, the neutralization charging device 823 is provided for neutralizing the droplets. Charged to bring it to the so-called Bozeman cell balance (

The state of Boltzmann charge equilibrium). Thereafter, the plurality of air suspension particles move downward, encountering a turbulent flow generated by the air flow generating device 83, and moving toward the exhaust port 86, and the filter 85 disposed in front of the exhaust port 86 is used to filter the discharged gas. A portion of the gas-containing suspended particulate gas is indirectly drawn by the aerodynamic particle size detector 87 through the present invention. Further, regarding the production of solid water-soluble fine particles, a high concentration of multi-particle size distribution solid-state aerosol particles (i.e., gas gel 92) is produced by Potassium Sodium Tartrate Tetrahydrate (hereinafter abbreviated as PST). The measured results and analysis of the present invention are as follows (refer to the eighth figure): A total of four cases are compared: only the receiving recess 12 is provided, (as shown in the fourth graph A, and shown in the eighth graph, the curve L81), the bearing The recessed portion 12 is provided with an impact plate 50 made of aluminum and is in a planar state (as shown in FIG. 4B, and is shown in the curve of 1292724), and the bearing recess 12 is covered with eucalyptus oil 91 (

Silicone Oil, buckled as shown in Figure 4C, and shown in the curve of Figure 8 L83); and the | Lu Wei μ. The impact plate 50 on the clothing is covered with oyster sauce 91 (Silicone

Oil, as shown in the fourth D diagram, is not shown, and is shown in the curve L84 of the eighth figure. In the eight diagrams of Cheng, the younger ones owe ^ ^ Γ found that only the mounting recess 12 is not equipped with an aluminum plate for 50 days 1 and can not suppress the bounce phenomenon of the solid PST; and the general aluminum & plane punch 4 plate 5 〇 〇 — - layer Shi Xi oil 91, can suppress solids for a short time

The second / bounce 'but may still not be able to effectively remove the solid PST collision after a long time. To solve this bouncing problem; in the concave state of the recess 12 埴奘 + 曰, /, 衣衣1 low volatile oil (such as oyster sauce 91), due to low volatility _ (four) degree Low, if the angle of the sample is tilted, or the person who wears the sample, the liquid oil will overflow and cause sampling inconvenience. It is an ideal design to fill the four-part 12 with a semi-solid solution buffer layer 3 (see Figure 4E). From the ninth figure, it can be found that the test is carried out with a six-hole porous impactor. The median particle size (c〇unt Medium Diameter for short) is 5·86//m, geometric standard deviation (CTM). Geometric Standard Deviation (GSD) is a gas phase 92 of solid PST of 1.56 (such as curve L91 of ninth figure) and gas gel 92 of Di〇ctyl Phthalate (hereinafter referred to as D0P). In the ninth graph, the curve L92), under the sampling flow of summer 3.6 L/min, it is assumed that the plane impact plate 50 and the filled 3% TSA are used on the receiving recess 丨2 of the annular recessed cavity. As shown in the fourth G diagram, '3% TSA is the buffer layer 30 of the semi-solid solution that can be shaped, and is shown in the curve L93 of the ninth figure) and the film oyster oil 91 (as shown in the fourth D-picture, And shows 1292724

In the curve L94) of the ninth figure, the bounce phenomenon of the buckle I and the impact plate 5 is compared, and it is found that the aluminum flat impact plate 5 is after the film 矽 oil ^ and the 3% TSA buffer layer 30 is filled. It can effectively suppress solid-state pST bounce in a short time (15 minutes of pick-up). And the liquid = for the glue 92, there is no strong grip θ & The liquid of the liquid is bouncing eight h 5 In this experiment, only the comparison, the PST is used to take the concave part 12 two turns, in fact, the secret layer 30 is money The tree is in the body of the body: and the second charge!:?, the preparation of the 50 layer 30 should be considered _: the water content is too small 脆弱 fragile, difficult to maintain the shape of the eve is too hard, not only difficult to prepare, and easy to quickly lose in the sample process Water, dry, resulting in a flattened state = this level of punching layer 3 (UX different volume concentration (for example, respectively, 3 re-entry, 'and because of the above TSA content is found =, difficult to prepare, is In the selection of the highest concentration (10), the curve of the experimental results, Lu (representing 1%), TSA of the gas meter, and U3 (representing 6% of TSA), show that the three τςΑ ratios are suitable for preventing solid gas. Sampling of rubber 92 bounce. In the previous experiment, it was mentioned that the water content of agar is too small, it will be relatively hard 1 and ί will easily lose water and dry quickly during the sampling process, and cause (4) shape ^ gj which may affect the solid state. Collection efficiency of gas gel 92. In order to improve the long-term load test of Qiongyue Under the disadvantage caused by the drying of curling,

Τ' rffj \jflJ Back to study, try to put a layer of about 7 〇〇 on the 3% TSA with a melon, and a compartment of 4 〇 (for example, Shi Xi Oil 91), which becomes a moisturizing barrier. The sound 30 double-layer filling makes it combine to collect the solid gas gel 92 and reduce the effect of agar ^ 1292724 surface drying. Since the weight concentration of the aversive dust defined in the labor safety and health regulations is 10 mg/m3, the weight is generated in the experiments of the first, a, third, eleventh and eleventh D-drawings. A solid-state PST gas gel 92 with a concentration of 7.22 mg/m3 was used to simulate a near-pure dust concentration environment to test the long-term sampling effect of the TSA.

The test was carried out using a perforated impactor, and the challenge of the gas gel 92 CMD was 5.86 GSD of 1.56 PST gas, and the sampling flow rate was 3.6 L/min, and the 3% of the TSA was filled in the receiving recess 12 of the annular recessed cavity. And the impact plate 50 of the general surface aluminum is respectively sampled for the solid state PST gas gel 92 for only two hours, and the impact plate 50 of the general plane aluminum is found, and the bounce phenomenon of the solid PST cannot be suppressed for a long time (such as the tenth Figure A), that is, a layer of eucalyptus oil 9 can not inhibit the rebound of the solid PST for a long time = (as shown in Figure 11B, the curve U12 is the initial sample value of the experiment; the curve Ull is 2 hours) The sampled value after the load.); and the 3% TSA is filled and dried, and the phenomenon of shrinkage occurs, causing the solid PST gas gel 92 to directly collide with the buffer layer 3G and bounce (for example, the needle-c diagram However, after using the moisturizing barrier 4〇-buffer layer 3〇 double-layered film, 3% can effectively inhibit the bounce phenomenon of the solid and PST gas gel 92, and the penetration rate curve before and after the 2 rubber 92 load is quite high. It is obvious that this kind of protection: the day 40-buffer layer 3 〇 double-layer membrane can inhibit the solid state psT The winner f can maintain the design of the 3 cans of the buffer layer and reduce the water dispersion and the shape of the recessed hole 12, which is suitable for the long-term gas recovery 92 particle sampling load (such as the tenth-d, 13 1292724 * Curve L112 is the initial sampled value of the experiment; curve L111 is the sampled value after 2 hours of loading.) Better performance. - In addition, for the 2-hour load penetration rate sampling data, select the m-particle 2 penetration rate value The change of time is compared. Since the value of the Bayer rate of the 5 grain is zero (refer to the tenth figure), if the value of the penetration rate increases, it means that the gas gel 92 has a tendency to bounce from the impact plate 50 or the buffer layer 3 ^. It can be seen from the twelfth figure that the general flat aluminum impact plate 5〇, in the absence of __ covered oyster oil 91 (as shown by curve L121) will inevitably bounce, even if the oyster sauce 91 ( As shown by curve U22, there is also a tendency to bounce in just a few minutes, which tends to be moderated in about 2 minutes, reaching a penetration rate of about 2% due to bounce, and it is impossible to suppress solid state for a long time. Pst bounce phenomenon; use i~6%tsa alone When the filling is applied to the buffer layer 30 of the impact plate 50, the TSA buffer layer 30 cannot be loaded for a long time, or the bounce phenomenon of the solid PST gas gel 92 is effectively suppressed. And as the TSA content concentration increases, the water content decreases. It will be harder and harder. It will be more likely to lose water and dry during the sampling process, resulting in a flattened state, thus accelerating the collection efficiency of the solid PST gas gel 92, which effectively inhibits the solid state PST bounce time according to the concentration prepared by TSA. Different comparisons, as shown in Figure 13, the effective inhibition time of 1% TSA (such as point 131) is about 40 minutes, and the effective inhibition time of 3% TSA (such as point 132) is about 20 minutes - 'reverse 6% The effective inhibition time of the TSA (as at point 133) is reduced to 4 minutes. • If the TSA filling weight of 1%, 3%, and 6% is used separately as the buffer layer 30 of the impact plate 50 (as shown by the curves L123, L124, and L125 in Fig. 12). The eucalyptus oil 91 (shown as the curve L126 14 1292724 L127 and L128 of the twelfth figure) serves as a protective layer and a double layer of the buffer layer 30, and then π'ζ. e 40 'make the moisturizing compartment 40' fJ 11ρςτ ^ ^, after ", 3% and 6% TSA can be effectively suppressed = silicone rubber 92 phenomenon, and its penetration rate with the "(4) extension, There is no obvious increase in the current: layer 30 double-layered in the new 嗖 嗖 保 / /,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Cry, p licks the effective rebound of the solid PST gas gel 92 bounce, it can also increase its long time

the amount. Can be solid your glue 92 particle sampling load = read the fourteenth figure 'Challenge gas gel cmd 5._, gsd is 1 · 56 PST, with the market 隹 D. Door V sales personal environmental monitoring (Personal nvxronmental Monitor PM 2. 5 , α T ffi # PEM-PM2. 5) #小小洞) 'With the traditional 披 _ oil 91 method (as shown in curve (4)), and the new type of moisturizing compartment 4 (K The buffer layer 3G double-layer film method (as shown by the curve L144) samples the challenge gas gel 92. When the sample g-like flow rate is 1 GL/min, the solid psT (as shown by the curve L(4)) (4), liquid D〇P (as curve U42), the gas gel 92 performs different ratios of the eucalyptus to the I. The study compares the pEM_pM2.5 sampler using its conventional Porous impact plate 5 〇 (the impact plate 5 〇 has a complex number inside The moisturizing barrier 40-buffer layer 30 double-layer coating method is better suited to the accommodating recess 12 having an annular recessed cavity, and is designed to remove the original porous impact plate 50 design and fill the TSA right. Filled with impact plate 5〇. Experimental results show that the traditional porous impact plate 50 is covered with 3% oil after buffering with 3% oil. After 30, when the load is sampled for a short time (for example, five minutes), the solid PST gas gel 92 bounce can be suppressed. 15 1292724 Similarly, as shown in the fifteenth figure, if the solid PST gas gel 92 is long After the time (about _篁 concentration of 7.22 mg / lfl3 of PEM-PM2.5 sampler in a separate 3% TSA,,,, - hour) load sampling, only the experiment begins (in five minutes as the curve ^ fill the charge When the buffer layer 30 jumps, but because 3% TSA will dry and shrink, so = show) can inhibit the PST elastic line L152) load sampling, none: between two (about two hours, such as the phenomenon of bounce 92. Political suppression of solid PST gas gel and new type of moisturizing compartment 40-buffer layer 3 () ring-shaped concave cavity placement (four) 12 set = cover film, with the PST gas gel 92 bounce phenomenon, from the actual Suppressed solid state) After two hours (four) _4, 7=(;; 曲(四)53 shows no significant change in the line. It is obvious that the penetration rate after the loading is arginine and the right η Ά layer 40' buffer layer 30 double The layered film method, -... has a garment-shaped concave cavity (1) for the concave-concave cavity (1) in the cutting-service. 5 sampler, so that it not only inhibits the solid m gas = Φ bounce can also prolong the sampling time of aerosol 92 particles. In summary, the advantages and effects of the present invention can be summarized as follows: [Π high accuracy. The unique buffer layer and moisturizing barrier of the present invention can effectively suppress The bounce phenomenon when the solid glue particles are sampled, and thus the error of weight collection caused by the sampling of the solid gas gel particles is small, and the sampling accuracy is increased. Μ ^ ^ [2] The sampling time is long. Due to the better sample loading of the gas particles, the sampling of the gas particles can be carried out for a long time. Therefore, the concentration of particulate contaminants in the air can be accurately evaluated and the exposure concentration of the particles in the air can be accurately estimated. 16 1292724 [3] Not afraid of vibration. The receiving concave portion of the present invention is formed by a circular concave hollow hole, and can be filled with other semi-solid and solid solution materials which are easy to maintain the shape, and is less likely to overflow due to movement or inclination, and is not afraid of vibration. [4] can effectively suppress the bounce of solid gas molecules. The receiving concave portion of the invention is designed as a circular concave hollow hole, and can be filled with other kinds of buffers for receiving the gas-impact impact such as the semi-solid and solid solution materials which are easy to maintain the shape, and can effectively suppress the rebound of the solid gas-gel particles. • Xin [5] low cost. If the buffer layer of the present invention is agar, easy to obtain and inexpensive, and the structure of the present invention is simple, the total cost is low. [6] A wide range of applications. Separation samplers commonly used in workplaces around the world such as Harvard Impactor, Dichotomous Sampler, PM10 Personal Environmental Monitor (PM10), Hi- Vol

Sampler South Flow Sampler, Microporous Uniform Deposition Impactor (

Micro-Orifice Uniform Deposit Impactor (M0UDI), airborne particle mass detector (Ambient Particulate <PM-l〇> Monitor'TEOM series 1440a) · ···, dozens of samplers are all using impactors The principle, the accuracy of its sampling, or post-mortem analysis, can be improved by applying the techniques of the present invention. The present invention has been described in detail with reference to the preferred embodiments of the present invention. In detail, it will be apparent to those skilled in the art that the present invention is capable of achieving the foregoing objects and is in accordance with the provisions of the Patent Law, and the patent application No. 17 1292724 is filed. 1292724 [Simple description of the diagram] The first diagram is a schematic diagram of a conventional impact plate. The second, second, and second C diagrams are the gas gels on the conventional impact plate.

The third figure is a perspective view of the combined apparatus of the fourth, fourth, fourth, fourth, fourth, fourth, fourth, and fourth G drawings of the present invention. 5 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图The eighth embodiment of the experimental data of the present invention is a schematic diagram of the experimental data of the present invention. The ninth drawing is a schematic diagram of the experimental data of the present invention. The tenth drawing is a schematic diagram of the experimental data of the present invention. 11th C and 11th D are schematic diagrams of experimental data of the present invention at each stage within two hours. FIG. 12 is a schematic diagram of experimental data of the present invention. FIG. 13 is an experimental data of the present invention. Figure 14 is a schematic diagram of the experimental data of the present invention. Figure 15 is a schematic diagram of the experimental data of the present invention. [Main component symbol description] 1 body 1A inlet end 1B outlet end 10 base 11 central passage 12 Bearing recess 19 1292724 20 Nozzle plate 21 Nozzle hole 30 Buffer layer 40 Moisture barrier 50, 90 Impact plate 81L Pipe 82 Water-soluble air suspension particle generating device 821 Ultrasonic atomizing nozzle 822 Feeder 83 Airflow generating device 86 Exhaust port 91 Oil 13 Bu 132, 133 points 823 neutralization charging device 85 filter 87 aerodynamic particle size detector 92 gas gel L1 Bu L12, L13, L8 Bu L82, L83, L84, L9 Bu L92, L93, L94, Lm, L112, Lm, L122, L123, L124, L125, L126, L127, L128, L14, L142, L143, L144, L15, L152, L153, L154 curve

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Claims (1)

1292724 X. Patent Application Range: 1 · A split-slope sampling device capable of reducing the bounce of airborne particles, comprising: a body having an inlet end and an outlet end, having a central passage and a receiving recess therein The inlet end is provided with at least one nozzle hole and at least one buffer layer is filled on the receiving recess, the buffer layer is a semi-solid solution material containing moisture and maintaining the fixed shape; The film is on the buffer layer to reduce the drying phenomenon of the buffer layer. 2. The split-slope sampling device for reducing the suspension of airborne particles as described in claim 1, wherein: the body comprises a base and a nozzle plate that can be fitted over the base, the central passage and The receiving recess is disposed on the base, and the at least one nozzle hole is disposed on the nozzle plate. 3. The split-shock sampling device for reducing the suspension of airborne particles as described in claim 2, wherein: the end of the central passage is funnel-shaped. 4. The method according to claim 1, wherein the buffer layer is selected from the group consisting of moisture-containing tryptic soy agar, and other types of agar containing water. , colloidal, liquid-containing solid solution chemical material, moisture-containing lipid, moisture-containing low-volatile oil, one of them 21 1292724 The moisturizing compartment is selected from the group consisting of cut oil, low volatile oil, Low-volatile fat, one of the chemicals that reduce liquid loss and reduce drying twenty two