JPH0933418A - Measuring method of concentration in air of particulate material - Google Patents
Measuring method of concentration in air of particulate materialInfo
- Publication number
- JPH0933418A JPH0933418A JP18144995A JP18144995A JPH0933418A JP H0933418 A JPH0933418 A JP H0933418A JP 18144995 A JP18144995 A JP 18144995A JP 18144995 A JP18144995 A JP 18144995A JP H0933418 A JPH0933418 A JP H0933418A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- air
- concentration
- particles
- particulate matter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は大気環境モニタリン
ダの一環として行なう粒子状物質の空気中濃度測定方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring the concentration of particulate matter in air, which is carried out as part of an atmospheric environment monitor Linda.
【０００２】[0002]
【従来の技術】従来、たとえば発電所周辺の高電圧機器
に付着する海塩粒子量を測定する方法等、粒子状物質の
空気中濃度測定方法では、空気中に浮遊する粒子状物質
を吸引して、溶液に溶解させ、この溶解質量を定量分析
する吸引法に依るか又は、空気中にガーゼ等を設置し
て、これに付着する粒子状物質の量を定量分析する付着
法に依るかが一般的であった。2. Description of the Related Art Conventionally, in a method of measuring the concentration of particulate matter in the air, such as a method of measuring the amount of sea salt particles adhering to high-voltage equipment around a power plant, the particulate matter floating in the air is sucked in. The solution is dissolved in a solution, and the dissolved mass is quantitatively analyzed by a suction method, or a gauze or the like is installed in the air to quantitatively analyze the amount of particulate matter adhering to the method. It was common.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の粒子状物質
の空気中濃度測定方法には解決すべき次の課題があっ
た。The conventional methods for measuring the concentration of particulate matter in air have the following problems to be solved.
【０００４】即ち、従来の方法のうち、吸引法では、吸
引装置とこれを動かすための電源が必要であり、野外で
多地点の測定を行う場合、費用と設置場所の制約が伴う
という問題があった。That is, of the conventional methods, the suction method requires a suction device and a power supply for moving the suction device, and there is a problem that cost and installation place are involved when performing measurement at multiple points outdoors. there were.
【０００５】又、付着法では、ガーゼ等の種類，形状，
設置方法，風向，風速等によって、付着効率が変化する
ため、付着量から気中濃度を換算する際の誤差が大きく
なるという問題があった。In addition, in the attachment method, the type, shape,
Since the adhesion efficiency changes depending on the installation method, wind direction, wind speed, etc., there is a problem that the error in converting the airborne concentration from the adhesion amount becomes large.
【０００６】本発明は上記課題を解決した粒子状物質空
気中濃度測定方法を提供することを目的とする。It is an object of the present invention to provide a method for measuring the concentration of particulate matter in air, which solves the above problems.
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題の解決
手段として、大気中に円柱体を気流に対して直角に設置
し、円柱体に付着した粒子状物質を、水で洗浄し、この
洗浄水に含まれる粒子状物質を定量分析して溶解質量を
求めると共に、この測定と同時に、円柱体近傍で風速を
測定しておき、この風速から、粒子状物質が円柱体に付
着する効率を決定し、これら溶解質量と付着効率とから
粒子状物質の空気中濃度を推定することを特徴とする粒
子状物質空気中濃度測定方法，を構成とするため、たと
えば直径Ｄ，長さＬの円柱体を気流に直角に設置する
と、水平方向の投影面積はＤ・Ｌ，風速をＵ，設置時間
をＴとすると、その通過風量に相当する風上空間中に含
まれる粒子のうち、円柱体に付着する粒子の割合を決め
る付着効率ηは、風速Ｕ，粒子直径ｄp ，粒子密度ρp
および円柱体直径Ｄを用いて、理論的に計算することが
出来る。粒子が水溶性の海塩粒子などの場合には、この
円柱体を回収して、少量の水で洗浄し、この洗浄水を電
気伝導度計で分析することによって、洗浄水中の塩分量
Ｗを定量分析することが出来る。Means for Solving the Problems As a means for solving the above problems, the present invention is to install a columnar body in the atmosphere at a right angle to an air flow, and wash particulate matter adhering to the columnar body with water. Quantitative analysis of the particulate matter contained in the wash water to determine the dissolved mass, and at the same time as this measurement, the wind speed was measured in the vicinity of the cylinder, and from this wind speed, the efficiency with which the particulate matter adhered to the cylinder was measured. In order to configure a method for measuring the concentration of particulate matter in air, which is characterized by estimating the concentration of particulate matter in air from the dissolved mass and the adhesion efficiency, for example, a cylinder having a diameter D and a length L If the body is installed at right angles to the airflow, the horizontal projected area is D L, the wind speed is U, and the installation time is T, and among the particles contained in the upwind space corresponding to the passing air volume, The adhesion efficiency η, which determines the ratio of particles that adhere, is U, the particle diameter d p, particle density [rho p
And the cylinder diameter D can be used for theoretical calculation. When the particles are water-soluble sea salt particles, the columnar body is collected and washed with a small amount of water, and the wash water is analyzed with an electric conductivity meter to determine the salt content W in the wash water. Quantitative analysis is possible.
【０００８】即ち、次式で気中塩分濃度Ｃを推定するこ
とが出来る。That is, the atmospheric salt concentration C can be estimated by the following equation.
【０００９】Ｃ＝Ｗ／（Ｄ・Ｌ・Ｔ・Ｕ・η）C = W / (D ・ L ・ T ・ U ・ η)
【００１０】[0010]
【発明の実施の形態】本発明の方法に係る実施の一形態
を図１，図２により説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the method of the present invention will be described with reference to FIGS.
【００１１】図１は本形態に用いる器材等の図で（ａ）
は平面図，（ｂ）は側面図である。FIG. 1 is a view of equipment and the like used in this embodiment (a)
Is a plan view and (b) is a side view.
【００１２】図２は粒子状物質の付着効率ηを理論的に
算出するための近似式及びそれによって得られた付着効
率の近似曲線の図である。FIG. 2 is a diagram of an approximation formula for theoretically calculating the adhesion efficiency η of the particulate matter and an approximation curve of the adhesion efficiency obtained by the approximation formula.
【００１３】図１において、１は気流２中に直角に設置
された、直径Ｄ，長さ（高さ）Ｌの円柱，２は粒子状物
質即ち塩分の粒子を含む気流，３は円柱１に付着した海
塩の粒子，３ａは円柱１に付着しない迂回粒子，４は円
柱１から洗浄水６によって洗い落された粒子３を含むサ
ンプル，５は気流２の風速を計る風速計，６は円柱１か
ら粒子３を洗い落して溶液として回収するための、蒸留
水または純水よりなる洗浄水，７はサンプル４の電気伝
導度を計り，サンプル４の粒子（この場合は塩分粒子）
濃度，即ち、塩分濃度を測定するための電気伝導度計で
ある。In FIG. 1, 1 is a cylinder having a diameter D and a length (height) L installed at right angles in an air flow 2, 2 is an air flow containing particulate matter, that is, particles of salt, and 3 is a cylinder 1. Sea salt particles that have adhered, 3a are detour particles that do not adhere to the cylinder 1, 4 is a sample containing particles 3 that have been washed from the cylinder 1 with cleaning water 6, 5 is an anemometer for measuring the wind speed of the air flow 2, 6 is a cylinder Washing water consisting of distilled water or pure water for washing off the particles 3 from 1 and collecting them as a solution, and 7 measuring the electrical conductivity of the sample 4 and the particles of the sample 4 (salt particles in this case)
It is an electric conductivity meter for measuring the concentration, that is, the salt concentration.
【００１４】次に上記器材等を用いて空気中の塩分（粒
子）濃度を測定する方法について説明する。Next, a method for measuring the concentration of salt (particles) in the air by using the above equipment will be described.
【００１５】図１に示すように、円柱１を気流２に直角
に設置し、この円柱１を一定時間Ｔだけ、放置しておく
と、円柱１の表面に気流２中の海塩粒子の一部の粒子３
が付着する。この円柱１を回収して、少量の洗浄水６
（蒸留水または純水）で洗浄し、サンプル４として回収
し、その洗浄水６に電気伝導度計７のプローグを入れる
と、洗浄水６の電気伝導度が測定される。この電気伝導
度から洗浄水６中の塩分量Ｗを定量分析することが出来
る。As shown in FIG. 1, when the cylinder 1 is installed at a right angle to the air flow 2 and the cylinder 1 is left for a certain period of time T, one surface of the cylinder 1 is exposed to one of the sea salt particles in the air flow 2. Particle 3
Adheres. Collect this column 1 and wash a small amount of washing water 6
The sample is washed with (distilled water or pure water), collected as a sample 4, and a plug of an electric conductivity meter 7 is put into the cleaning water 6 to measure the electric conductivity of the cleaning water 6. From this electric conductivity, the amount W of salt in the wash water 6 can be quantitatively analyzed.
【００１６】一方、この円柱１の近傍に風速計５を設置
して、一定時間Ｔ中の平均風速Ｕを測定しておき、図２
に示す、理論的近似式を用いて、或は直接，曲線から付
着効率ηを決定し、先に示した式，Ｃ＝Ｗ／（Ｄ・Ｌ・
Ｔ・Ｕ・η）より塩分濃度Ｃを推定する。On the other hand, an anemometer 5 is installed in the vicinity of the cylinder 1 to measure the average wind speed U during a fixed time T.
The adhesion efficiency η is determined from the curve using the theoretical approximation formula shown in Fig. 3 or directly, and the formula shown above, C = W / (D ・ L ・
Estimate the salt concentration C from T ・ U ・ η).
【００１７】以上の通り、本形態によれば直径と長さの
知れた円柱１を気流中に直角に設置するだけで、後はき
わめて容易な処置を施すことにより、即ち場所を選ばず
低コストで、空気中に含まれる塩分濃度を正確に知るこ
とができるという利点がある。As described above, according to the present embodiment, the cylinder 1 having a known diameter and length is installed at right angles in the air stream, and thereafter, an extremely easy procedure is performed, that is, the location is low and the cost is low. Thus, there is an advantage that the salt concentration contained in the air can be accurately known.
【００１８】従って、発電所，高電圧変電所等，機器に
わずかな塩分が付着することによって漏電，それによる
人災等の発生しやすい区域の安全管理をより定量的確実
に行なうことができるという利点がある。Therefore, it is possible to more quantitatively and surely perform safety management of an area such as a power plant, a high-voltage substation, or the like, where a slight amount of salt is attached to equipment, which is apt to cause an electric leakage and a human accident. There is.
【００１９】また、発錆を嫌う自動車，通信機器工場等
の環境管理を適確に行なうことができるという利点があ
る。Further, there is an advantage that environment management of automobiles, communication equipment factories, etc., which are vulnerable to rust, can be appropriately performed.
【００２０】その他，化学工場，育苗場等空中塩分の高
い濃度を嫌う区域の雰囲気管理を定量化できるという利
点がある。In addition, there is an advantage that the atmosphere management in the area where high concentration of aerial salt such as a chemical factory or a nursery is disliked can be quantified.
【００２１】[0021]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。The present invention has the following effects because it is configured as described above.
【００２２】即ち、本発明の方法によれば、大気中の粒
子状物質、特に塩分の濃度を正確，容易に知ることがで
きる。That is, according to the method of the present invention, the concentration of particulate matter, particularly salt, in the atmosphere can be accurately and easily known.
【００２３】これにより発電所，高電圧変電所等の漏電
に対する安全管理が容易になる。This facilitates safety management for electric leakage at power plants, high voltage substations and the like.
【００２４】また、発錆を嫌う自動車，通信機器工場等
の環境管理を適確に行なうことができる。Further, it is possible to properly carry out environmental management of automobiles, communication equipment factories, etc., which are averse to rusting.
【００２５】化学工場その他，空中塩分の高い濃度を嫌
う区域の雰囲気管理を定量化できる。Atmosphere control in chemical factories and other areas where high airborne salt concentrations are disliked can be quantified.
【図１】本発明の実施の一形態に係る空気中塩分測定方
法に用いる器材の図で，（ａ）は平面図，（ｂ）は側面
図である。FIG. 1 is a diagram of equipment used in a method for measuring salt content in air according to an embodiment of the present invention, in which (a) is a plan view and (b) is a side view.
【図２】粒子状物質の付着効率を算出するための近似式
及びそれによって得られた付着効率の近似曲線の図であ
る。FIG. 2 is a diagram of an approximation formula for calculating the adhesion efficiency of particulate matter and an approximation curve of the adhesion efficiency obtained thereby.
１ 円柱 ２ 気流 ３ 粒子 ４ サンプル ５ 風速計 ６ 洗浄水 ７ 電気伝導度計 1 column 2 air flow 3 particles 4 sample 5 anemometer 6 wash water 7 electric conductivity meter
Claims (1)
置し、円柱体に付着した粒子状物質を、水で洗浄し、こ
の洗浄水に含まれる粒子状物質を定量分析して、溶解質
量を求めると共にこの測定と同時に、円柱体近傍で風速
を測定しておき、この風速から、粒子状物質が円柱体に
付着する効率を決定し、これら溶解質量と付着効率とか
ら粒子状物質の空気中濃度を推定することを特徴とする
粒子状物質空気中濃度測定方法。1. A columnar body is installed in the atmosphere at a right angle to an air flow, the particulate matter attached to the columnar body is washed with water, and the particulate matter contained in the washing water is quantitatively analyzed. Simultaneously with the measurement of the dissolved mass, the wind speed is measured in the vicinity of the cylindrical body, and the efficiency of the particulate matter adhering to the cylindrical body is determined from this wind speed.The dissolved mass and the adhesion efficiency are used to determine the particulate matter. A method for measuring the airborne concentration of particulate matter, which comprises estimating the airborne concentration of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18144995A JPH0933418A (en) | 1995-07-18 | 1995-07-18 | Measuring method of concentration in air of particulate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18144995A JPH0933418A (en) | 1995-07-18 | 1995-07-18 | Measuring method of concentration in air of particulate material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0933418A true JPH0933418A (en) | 1997-02-07 |
Family
ID=16100968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18144995A Withdrawn JPH0933418A (en) | 1995-07-18 | 1995-07-18 | Measuring method of concentration in air of particulate material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0933418A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326020A (en) * | 1998-05-19 | 1999-11-26 | Natl Res Inst For Metals | Measuring device for quantity of sea salt grain |
| JPH11326019A (en) * | 1998-05-19 | 1999-11-26 | Natl Res Inst For Metals | Determination method for quantity of sea salt grain |
| WO2013118267A1 (en) * | 2012-02-09 | 2013-08-15 | 中国電力株式会社 | Airborne salt capturing device for measuring amount of airborne salt |
| WO2014049716A1 (en) * | 2012-09-26 | 2014-04-03 | 中国電力株式会社 | Dispersed salt collecting device |
| WO2014097487A1 (en) * | 2012-12-21 | 2014-06-26 | 中国電力株式会社 | Dispersed salt capture device |
| WO2015092878A1 (en) * | 2013-12-18 | 2015-06-25 | 中国電力株式会社 | Holding device and airborne-salt-trapping device |
-
1995
- 1995-07-18 JP JP18144995A patent/JPH0933418A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11326020A (en) * | 1998-05-19 | 1999-11-26 | Natl Res Inst For Metals | Measuring device for quantity of sea salt grain |
| JPH11326019A (en) * | 1998-05-19 | 1999-11-26 | Natl Res Inst For Metals | Determination method for quantity of sea salt grain |
| WO2013118267A1 (en) * | 2012-02-09 | 2013-08-15 | 中国電力株式会社 | Airborne salt capturing device for measuring amount of airborne salt |
| JP5677595B2 (en) * | 2012-02-09 | 2015-02-25 | 中国電力株式会社 | Scattered salt capture device for measuring the amount of scattered salt |
| JPWO2013118267A1 (en) * | 2012-02-09 | 2015-05-11 | 中国電力株式会社 | Scattered salt capture device for measuring the amount of scattered salt |
| WO2014049716A1 (en) * | 2012-09-26 | 2014-04-03 | 中国電力株式会社 | Dispersed salt collecting device |
| JP5752328B2 (en) * | 2012-09-26 | 2015-07-22 | 中国電力株式会社 | Spattering salt capture device |
| WO2014097487A1 (en) * | 2012-12-21 | 2014-06-26 | 中国電力株式会社 | Dispersed salt capture device |
| JP5763850B2 (en) * | 2012-12-21 | 2015-08-12 | 中国電力株式会社 | Spattering salt capture device |
| WO2015092878A1 (en) * | 2013-12-18 | 2015-06-25 | 中国電力株式会社 | Holding device and airborne-salt-trapping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021001 |