JP2002310863A - Passive type sampler and analyzing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a passive type sampler with favorable measurement accuracy and extremely easy analyzing operation which can be repeatedly used for sampling a multiplicity of times, and an analyzing method for a component in an atmosphere using the passive type sampler. SOLUTION: The passive type sampler 1 has a cylindrical porous tube 2 with both ends opened, and an absorbent 3 housed in an interior of the porous tube 2. The absorbent 3 is arranged in a portion other than the both ends of the porous tube 2. It is movably held by filling glass wool 4 and 4 from both end sides of the porous tube 2 and installing fastening plates 5 and 5 in their outer ends. The passive type sampler 1 is placed in a measure environment to perform sampling. After sampling, the passive type sampler 1 is inserted in a measurement tube 10 and it is held by a fastening plate 11. Instrumental analysis is performed by heating the measurement tube 10 and desorbing components.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passive sampler for adsorbing and trapping a component, particularly a trace component, contained in an atmosphere such as an outdoor or indoor atmosphere, and a component using the passive sampler. Analysis method.

[0002]

2. Description of the Related Art In environmental monitoring and measurement of gaseous substances generated in various industrial fields and living environments, specific gaseous substances and aerosols in the atmosphere are collected, collected, and collected. Is analyzed by an analyzer.

[0003] As methods for collecting gaseous substances and aerosols in the atmosphere, methods such as a vacuum bottle method, a suction bottle method, and a collecting bag method are conventionally known. These collection methods are:
Since a sample is collected in a gaseous state in various containers decompressed by a suction pump or a sample is directly collected in a sample bag through a pump, devices such as a decompression device and a suction pump are required. Therefore, there is a problem that an installation space for these devices is required, and that equipment costs for the devices and human expenses for collection and collection increase. Also, the noise caused by the pump caused discomfort to residents.

On the other hand, a passive sampler which is small and does not require a device such as a pump has been proposed. The passive sampler is a sampler that only performs sampling by placing the sampler in the measurement environment, does not have a device such as a pump, and makes the adsorbed substance and the adsorbent contact only by the flow of gas in the measurement environment. The substance to be adsorbed is adsorbed on the adsorbent.

As a conventional passive sampler, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 10-300647. This passive sampler includes a container and an adsorption unit. The container has a cylindrical shape with one end closed by a stopper, and is filled with an adsorbent. The suction unit is
One end has a substantially cylindrical shape closed by a stopper, and the open end of the suction unit is detachably fitted to the open end of the container. The adsorbing section is constituted by a molecular diffusion filter through which a substance to be adsorbed can pass.

[0006] The sampler thus configured is placed in a measurement environment such that the adsorption part is on the lower side and the container is on the upper side during sampling. At this time, since the adsorbent has moved to the lower adsorbing section, the adsorbent adsorbs the substance to be adsorbed that has passed through the adsorbing section.

After the end of the sampling, the sampler is inverted, and the adsorbent is moved from the adsorbing section side to the container side.

When the analysis is performed after the sampling is completed,
The adsorption part and the stopper are removed from the container, and the container is attached to the analyzer for analysis. At this time, the container is used as a measuring tube in the analyzer.

[0009]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the passive type sampler of No. 0647, when the adsorbent is moved from the adsorption section to the container after sampling,
The adsorbent remains in the adsorption section, causing an error in the analysis value of the substance to be adsorbed. Further, while the adsorbent moves between the container and the adsorption section, the adsorbents collide with each other and are worn, so that the passive sampler cannot be used repeatedly many times. When the adsorbent is worn, the adsorption characteristics change, so that the component analysis accuracy changes.

The present invention solves the problems of the conventional passive sampler described above, and provides a passive sampler with good measurement accuracy and a method for analyzing the components of the atmosphere such as the atmosphere using the passive sampler. The purpose is to do.

Further, the present invention provides a passive sampler which can be used for sampling repeatedly many times,
An object of the present invention is to provide a method for analyzing components in an atmosphere using this passive sampler.

[0012]

A passive sampler according to the present invention (claim 1) has a porous tube and an adsorbent filled in the porous tube.

According to the passive sampler, since the porous tube itself containing the adsorbent has gas permeability, the adsorbent is not moved from the porous tube to another container or the like at the time of sampling. The target component can be adsorbed on the adsorbent and sampled while the agent is still positioned in the porous tube. Therefore, the adsorbents can be used for sampling repeatedly many times without the adsorbents colliding with each other due to the movement and being worn and degraded.

In the passive sampler according to the present invention, it is preferable that the adsorbent is immovably held in the porous tube. In this case, since the adsorbent is not deteriorated at all by abrasion, it can be used repeatedly very many times.

In the passive sampler according to the present invention, a porous thin tube is disposed at an axial portion of the porous tube, and the adsorbent is filled between the thin tube and the porous tube. (Claim 3). Also in this case, since the adsorbent can be sampled while housed in the porous tube, the adsorbent does not bump into each other due to the movement and is worn and does not deteriorate, and the adsorbent is repeatedly used many times for sampling. be able to.

An analysis method according to the present invention (claim 4) is a method for analyzing components in an atmosphere such as the atmosphere using the passive sampler, wherein the passive sampler is brought into contact with the atmosphere to thereby analyze the passive sampler. After the components are adsorbed on the adsorbent of the mold sampler, the passive sampler is put into a non-gas-permeable measurement tube, and the adsorbent is heated while the gas is passed through the measurement tube to desorb the components and analyzed. .

According to this analysis method, after sampling, the adsorbent can be analyzed without removing it from the passive sampler. Therefore, the analysis operation is extremely easy, and a part of the adsorbent does not remain in the passive sampler when the adsorbent is taken out, so that an error does not occur in the analysis value, and the measurement accuracy is improved. . Further, since the adsorbent is not taken out, the adsorbent does not wear out, and the adsorbent can be repeatedly used many times.

According to a fifth aspect of the present invention, there is provided a method for analyzing components in an atmosphere such as the atmosphere using the passive type sampler according to the third aspect. After the components are adsorbed on the adsorbent of the passive sampler by contact, the passive sampler is placed in a non-permeable air measuring tube, a carrier gas for desorption is supplied into the narrow tube, and the adsorbent is heated. Then, the components are desorbed and analyzed.

According to this analysis method, the carrier gas supplied into the thin tube is introduced into the axial portion of the porous tube, from which the adsorbent and the peripheral wall of the porous tube penetrate. Spill outside the quality tube. In this analysis method as well, the components desorbed from the adsorbent by heating are transported by the carrier gas and efficiently flow out of the porous tube, so that the desorbed components remain in the porous tube and the analysis value No error occurs, and the measurement accuracy is improved. In addition, after sampling, analysis can be performed without removing the adsorbent from the passive sampler, making the analysis operation extremely easy.In addition, when the adsorbent is removed, part of the adsorbent remains in the passive sampler. As a result, no error occurs in the analysis value, and the measurement accuracy is improved. Further, since the adsorbent is not taken out, the adsorbent does not wear out, and the adsorbent can be repeatedly used many times.

In the passive sampler of the present invention, the components are diffused through the porous tube and adsorbed by the adsorbent, so that the adsorbent filled in the porous tube is closer to the inner peripheral wall of the porous tube. The more the substance, the more components it adsorbs. Therefore, when the carrier gas is supplied to the adsorbent through the porous thin tube at the axial center portion as in the analysis method of claim 5, the carrier gas flows in the radial direction from the thin tube and passes through the adsorbent layer. The components desorbed from the adsorbent near the inner peripheral wall pass through the porous tube immediately after the desorption and are taken out. Therefore, according to the method of claim 5, the components can be quickly desorbed.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a passive sampler according to an embodiment of the present invention.
(B) is a perspective view of a porous tube of the passive sampler of FIG. 1.

The passive sampler 1 comprises a cylindrical porous tube 2 having both ends opened,
And the adsorbent 3 accommodated in the inside of the device. This adsorbent 3
Are arranged at portions other than both ends of the porous tube 2. The adsorbent 3 is filled with glass wools 4 and 4 from both ends of the porous tube 2, and further, a stopper 5 is attached to an outer end thereof.
5 is held immovably by installing.
As the metal fastener 5, a corrosion-resistant metal wire is U-shaped,
It is suitable to be curved into an α-shape or a W-shape, but other shapes may be used.

As the porous tube 2, a tube that can transmit an atmosphere and a component to be analyzed in the atmosphere is used. It is preferable that the material of the porous tube 2 be able to withstand the heating temperature when performing component analysis by the heat desorption method after sampling. Specifically, a porous ceramic, a porous metal, a porous heat-resistant synthetic resin, or the like is used. The porous tube 2 may be hard,
It may have flexibility.

As shown in FIG. 2 (a), the porous tube 2 may be a porous tube 2A made entirely of a porous material, or as shown in FIG. 2 (b).
Portions 2 at both ends of a tube made of a porous material where no adsorbent is present inside and gas components are not substantially diffused
The a and 2a may be a porous tube 2B that has been subjected to a process of closing a porous hole so that gas does not permeate.
The purpose of the sealing treatment of the both end portions 2a, 2a is mainly to increase the strength of the porous tube. As a specific method, a component which makes the surface of the porous tube vitreous by firing is used. Is coated by spraying or dipping, dried, and fired.

In this case, as a specific example of the component which becomes vitreous by firing, a composition in which 95 to 97% of a vitreous frit and 3 to 5% of a clay are dispersed in water is exemplified. The vitreous component is not particularly limited as long as it can withstand the heating temperature when heating at the time of analyzing the adsorbed component.

It is preferable that the adsorbent 3 has a large amount of adsorbed target components and is easily desorbed. Specifically, activated carbon, silica gel, molecular sieve, porous polymer (such as Tenax resin) and the like are suitable as the adsorbent.
Activated carbon is particularly preferred. The adsorbent 3 is preferably in the form of fine granules. The granular adsorbent is a porous tube 2
It is easy to fill the porous tube 2 and the gas flows between the particles of the adsorbent 3, so that the target component is also sufficiently adsorbed to the adsorbent filled near the core of the porous tube 2. Become.

Sampling is performed by installing the passive sampler 1 configured as described above in a measurement environment. At this time, the components in the atmosphere that have passed through the side peripheral surface of the porous tube 2 and the components in the atmosphere that have entered through the opening end of the porous tube 2 are adsorbed by the adsorbent 3. After a lapse of a predetermined time, the passive sampler 1 is taken out of the measurement environment, and sampling is completed.

In the passive sampler 1,
In addition to the components that have entered from the opening end of the porous tube 2 being adsorbed by the adsorbent 3, the components that have passed through the peripheral surface of the porous tube 2 are also adsorbed by the adsorbent 3, so that the adsorption efficiency is reduced. It is expensive and can perform sampling in a relatively short time. However, a detachable cap is attached to one end or both ends of the porous tube 2 and only the components in the atmosphere that have passed through the porous tube 2 during sampling are adsorbent 3
May be adsorbed. This can prevent dust, foreign matter, living things, and the like from entering the porous tube 2. This cap may be removed when detaching.

In the passive sampler 1,
Since the adsorbent 3 is immovably held by the glass wool 4 and the stopper 5, the adsorbents 3 do not collide with each other and are not worn or deteriorated, and can be used repeatedly many times.

Further, as shown in FIG. 2 (b), if the porous tube 2B is formed by sealing and reinforcing the portions 2a, 2a at both ends where the gas components do not diffuse, the strength of the porous tube is high. A passive sampler that can withstand repeated use more times can be obtained. In addition, in the case of this porous tube 2B, the porous portion 2b through which the gas component permeates and the sealing treatment portions 2a, 2a through which the gas component does not permeate are distinguished in appearance, and the portion through which the gas component permeates when the sampler is handled. The effect of preventing the portion 2b from being touched with bare hands and preventing the portion 2b from being contaminated with impurities that impede the transmission of gas components such as oil components is also expected.

FIG. 3 is a sectional view for explaining a method of analyzing components sampled by the passive sampler 1 of FIG.

After the sampling is completed, the passive sampler 1 is inserted into a cylindrical measuring tube 10 having both open ends, and is immovably held by a stopper 11 or the like. Since the inner diameter of the measuring tube 10 is larger than the outer diameter of the porous tube 2, there is a gap between the inner peripheral surface of the measuring tube 10 and the outer peripheral surface of the porous tube 2.

The measuring tube 10 containing the passive sampler 1 is installed inside the apparatus by a known heat desorption method. In this apparatus, the carrier gas is flowed into the inside of the measuring tube 10, the measuring tube 10 is heated, and the adsorbent 3 is also heated. By this heating, the components adsorbed on the adsorbent 3 are desorbed from the adsorbent 3, and the desorbed components are supplied from the open end of the porous tube 2 or from the porous tube 2
Out of the surrounding surface. Then, the sample is conveyed by a carrier gas, introduced into an analyzer (not shown) such as a gas chromatography installed downstream of the measuring tube 10 and analyzed.

The measuring conditions of the measuring tube 10 are, for example, temperature: 50 to 500 ° C., time: 1 minute to 60 minutes, carrier gas: helium, nitrogen, and pressure: 50 to 300 kPa.

In this method of analyzing components, the operation is simple because the passive sampler 1 is directly inserted into the measuring tube 10 for analysis. In addition, since it is not necessary to move the adsorbent 3 from the porous tube 2 to another container or the like,
There is no possibility that a part of the adsorbent 3 remains during the movement and causes an error in the analysis value of the component. Furthermore, there is no possibility that the adsorbents 3 will be worn and degraded during the movement.

In the passive sampler 1,
Most of the analysis target components in the measurement environment are in a porous tube 2
And is adsorbed by the adsorbent 3 through the side peripheral surface of. Therefore, in the cross section of the porous tube 2 in a direction perpendicular to the longitudinal direction, the component adsorption amount of the adsorbent 3 is smaller at the core portion of the porous tube 2, and the adsorption amount is larger as approaching the inner peripheral surface of the porous tube 2. Is usually the case. Therefore, when the passive sampler 1 is desorbed, a considerable part of the desorbed component permeates the porous tube 2 from the inner peripheral side to the outer peripheral side. In the desorption device of FIG. 3, the carrier gas flows through the gap between the outer periphery of the porous tube 2 and the inner periphery of the measurement tube 10. The carrier gas is conveyed by the carrier gas between the measurement tube 10 and the porous tube 2 and can be efficiently discharged from the measurement tube 10.

FIG. 4A is a perspective view of a passive sampler according to another embodiment of the present invention, and FIG.
FIG. 4A is a perspective view of a thin tube of the passive sampler, and FIG.
(C) is a perspective view of a porous tube of the passive sampler of FIG. 4 (a). FIG. 5 is a cross-sectional view for explaining a method of analyzing components sampled by the passive sampler of FIG. 4A, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5, and FIG. It is sectional drawing which follows the VII line.

The passive type sampler 21 comprises a cylindrical porous tube 22 and a porous tube 2.
2 has a porous thin tube 25 arranged at the axial center portion, and an adsorbent 3 filled between the porous tube 22 and the thin tube 25. One end of the porous tube 22 is sealed by a flat disk-shaped sealing plate 23, and the other end is made of metal, glass, ceramics, or heat-resistant rubber or synthetic resin (in this embodiment, heat-resistant rubber or synthetic resin). (Made of rubber). The sealing plate 23 is adhered to the end surface of the porous tube 22 by, for example, a heat-resistant adhesive.

The sealing lid 24 is substantially disc-shaped, and a short cylindrical peripheral wall portion 24a that covers the outer peripheral surface of the porous tube 22 protrudes from the outer peripheral edge. The inner diameter of the peripheral wall portion 24 a is set slightly smaller than the outer diameter of the porous tube 22, and the peripheral wall portion 24 a is externally fitted to an edge of the outer peripheral surface of the porous tube 22.

A through hole 24 is formed at the center of the sealing lid 24.
b is provided, and the thin tube 25 is inserted into the through hole 24b. The tip of the thin tube 25 reaches the sealing plate 23, and the tip surface of the thin tube 25 is in contact with the sealing plate 23. Note that a recess may be provided in the central portion of the sealing plate 23, and the tip of the thin tube 25 may be fitted into the recess. This thin tube 25
The adsorbent 3 is filled in a gap between the outer peripheral surface of the porous tube 22 and the inner peripheral surface of the porous tube 22.

The porous tube 22 is made of the same material as the porous tube 2 according to the above embodiment.

The sealing plate 23 is preferably made of non-breathable material, but may be made of breathable material. As the sealing plate 23, one that can withstand the heating temperature when performing component analysis by the heat desorption method after sampling is used, and specifically, heat-resistant rubber or synthetic resin, metal, glass, ceramics, or the like is used. You. The sealing plate 23 may be directly bonded to the porous tube 22 by an ultrasonic vibration method or the like in addition to a heat-resistant adhesive. The sealing plate 23 may have a shape covering the outer peripheral end of the porous tube 22 similarly to the sealing lid 24, and may be a plug-like body fitted inside the porous tube 22 like a rubber stopper. There may be.

As the thin tube 25, a tube which can transmit an atmospheric gas, an analysis target component, a carrier gas and the like at the time of sampling and analysis is used. The material of the thin tube 25 is preferably a material that can withstand the heating temperature when performing component analysis by the heat desorption method after sampling. For example, a sintered glass or a porous ceramic is suitable. A number of small-diameter holes may be formed in the side surface of the tube.

The passive-type sampler 21 configured as described above performs sampling by being installed in a measurement environment, similarly to the passive-type sampler 1. At this time, components in the atmosphere that have passed through the peripheral surface of the porous tube 22 are adsorbed by the adsorbent 3. After a lapse of a predetermined time, the passive sampler 22 is taken out of the measurement environment, and sampling is completed.

After the completion of the sampling, the passive sampler 21 is inserted into the measuring tube 10. At this time,
The outer diameter of the sealing lid 24 is the same as or slightly smaller than the inner diameter of the measuring tube 10.
1 is held substantially coaxially inside the measuring tube 10 by the sealing lid 24. In addition, a projection is protruded from the outer peripheral surface of the sealing plate 23, and the porous tube 22 is coaxially held inside the measurement tube 10 by bringing the projection into contact with the inner peripheral surface of the measurement tube 10. Is also good.

The measurement tube 10 containing the passive sampler 21 is installed inside the apparatus by a known heat desorption method, and is heated and a carrier gas flows through the inside of the measurement tube 10. At this time, since the sealing lid 24 is arranged in the measuring tube 10, almost all the carrier gas is
5 and is introduced into the porous tube 22. The carrier gas introduced into the thin tube 25 is a porous tube 2
In the inside 2, the gas passes through the peripheral surface of the thin tube 25 and flows out, and passes through the adsorbent 3 and the peripheral surface of the porous tube 22 and flows out of the porous tube 22.

Since one end of the porous tube 22 is sealed by the non-air-permeable sealing plate 23, all the gas flows out from the side peripheral surface of the porous tube 22. The analysis target component desorbed from the adsorbent 3 by this heating is carried out of the porous tube 22 by the carrier gas. The carrier gas and the component to be analyzed are introduced into an analyzer (not shown) such as a gas chromatography installed downstream of the measuring tube 10 and analyzed.

In the passive type sampler 21, since the components permeating from the side peripheral surface of the porous tube 22 are adsorbed by the adsorbent 3, the adsorption efficiency is high and the sampling is performed in a relatively short time. Can be. Since both ends of the porous tube 22 are sealed by the sealing plate 23 and the sealing lid 24, it is possible to prevent dust, foreign matter, organisms, and the like from entering the tube 22. Further, since the adsorbent 3 filled in the porous tube 22 is immovably held by the sealing plate 23 and the sealing lid 24, the adsorbents 3 do not collide with each other and are worn and do not deteriorate. , Can be used repeatedly many times.

In this method of analyzing components, the operation is simple because the passive sampler 21 is directly inserted into the measuring tube 10 for analysis. Further, since it is not necessary to move the adsorbent 3 from the porous tube 22 to another container or the like, a part of the adsorbent 3 does not remain during the movement and does not cause an error in the analytical value of the component. Furthermore, there is no possibility that the adsorbents 3 will be worn and degraded during the movement.

In this component analysis method, the component desorbed by heating is efficiently transported to the outside of the porous tube 22 by the carrier gas. For this reason,
The desorbed components do not stay in the porous tube 22 to cause an error in the analysis value, and the measurement accuracy is improved.

In the passive sampler according to this embodiment, the components in the atmosphere diffuse through the porous tube 22 and are adsorbed by the adsorbent 3, so that the porous tube 2
Of the adsorbents 3 filled in 2, the one closer to the inner peripheral wall of the porous tube 22 adsorbs more components. Therefore,
When the carrier gas is supplied to the adsorbent through the porous thin tube 25 at the axial center as in the analysis method of FIG. 5, the carrier gas flows in the radial direction from the thin tube 25 and passes through the layer of the adsorbent 3, so that the porous tube The components desorbed from the adsorbent 3 near the inner peripheral wall of the pipe 22 pass through the porous tube 22 immediately after the desorption, and are taken out. Therefore, according to the analysis method of FIG. 5, the components can be quickly desorbed.

The above embodiment is an example of the present invention.
The present invention is not limited to the above embodiment. For example, in the above embodiment, the porous tubes 2 and 22 are straight tubes, but may be curved or bent tubes,
It may be a coil. In addition, the porous tubes 2 and 22 are not limited to those having a circular cross-sectional shape, and may be rectangular tubes or flat tubes. Further, irregularities or screws for fixing the caps to both ends of the porous tubes 2 and 22 may be provided. The porous tubes 2 and 22 may be provided with locking portions for locking a string or the like for hanging in a room.

[0053]

As described above, according to the passive sampler of the present invention and its analysis method, the analysis operation is extremely easy, the passive sampler can be repeatedly used many times, and the measurement accuracy is good. And an analysis method thereof.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a passive sampler according to an embodiment.

FIG. 2 is a perspective view of a porous tube of the passive sampler of FIG. 1;

FIG. 3 is a sectional view illustrating a method of analyzing components in an atmosphere sampled by the passive sampler of FIG. 1;

4A is a perspective view of a passive sampler according to another embodiment of the present invention, FIG. 4B is a perspective view of a narrow tube of the passive sampler of FIG. 4A, and FIG. 4C is a perspective view of FIG. It is a perspective view of a porous tube of a passive type sampler.

5 is a cross-sectional view illustrating a method of analyzing a component sampled by the passive sampler of FIG.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a sectional view taken along the line VII-VII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Passive type sampler 2, 2A, 2B Porous tube 3 Adsorbent 4 Glass wool 5 Stopper 10 Measurement tube 11 Stopper 21 Passive type sampler 22 Porous tube 23 Sealing plate 24 Sealing lid 24a Peripheral wall 25 Thin tube

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuki Kumagai 2-24-25-103 Nishiazabu, Minato-ku, Tokyo F-term (reference) 2G052 AA01 AB27 AC02 AD02 AD17 AD22 AD42 BA05 BA21 CA04 CA14 DA26 EB11 ED03 ED06 ED09 GA27 JA09

Claims (5)

[Claims] 1. A passive sampler having a porous tube and an adsorbent filled in the porous tube. 2. The passive sampler according to claim 1, wherein the adsorbent is immovably held in the porous tube. 3. The porous tube according to claim 1, wherein a porous thin tube is disposed at an axial portion of the porous tube, and the adsorbent is filled between the thin tube and the porous tube. A passive sampler characterized by the following. 4. A method for analyzing components in an atmosphere such as the atmosphere using the passive sampler according to claim 1, wherein the passive sampler is brought into contact with the atmosphere to analyze the components. After adsorbing the components to the adsorbent, the passive sampler is placed in an air-impermeable measurement tube, and the adsorbent is heated and desorbed by passing the air through the measurement tube to analyze the components. Analysis method of the components in the. 5. A method for analyzing components in an atmosphere such as the atmosphere using the passive sampler according to claim 3, wherein the passive sampler is brought into contact with the atmosphere to adsorb the passive sampler. After adsorbing the components, the passive sampler is placed in a non-permeable gas measuring tube, a carrier gas for desorption is supplied into the narrow tube, and the components are desorbed by heating the adsorbent to analyze the components. A method for analyzing components in an atmosphere, characterized in that: