JP4358785B2 - 密封容器内の酸素量の測定方法及びこれに用いる密封容器のピアス装置 - Google Patents
密封容器内の酸素量の測定方法及びこれに用いる密封容器のピアス装置 Download PDFInfo
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- JP4358785B2 JP4358785B2 JP2005156084A JP2005156084A JP4358785B2 JP 4358785 B2 JP4358785 B2 JP 4358785B2 JP 2005156084 A JP2005156084 A JP 2005156084A JP 2005156084 A JP2005156084 A JP 2005156084A JP 4358785 B2 JP4358785 B2 JP 4358785B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
- G01N31/225—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols for oxygen, e.g. including dissolved oxygen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6408—Fluorescence; Phosphorescence with measurement of decay time, time resolved fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7756—Sensor type
- G01N2021/7759—Dipstick; Test strip
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N2021/7769—Measurement method of reaction-produced change in sensor
- G01N2021/7786—Fluorescence
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
- G01N21/8507—Probe photometers, i.e. with optical measuring part dipped into fluid sample
- G01N2021/8528—Immerged light conductor
Description
Pah・(Va+Vh)=Ph・Vh+Pa・Va ……(1)
の関係が成立し、(1)式にてヘッドスペース容積Vhのみが未知となるため、(1)式の関係を利用してヘッドスペースの容積を求めることができる。そして、ヘッドスペースの容積と濃度とからヘッドスペースの酸素量を求めることができる。液体の溶存酸素量に関しては、定量充填工程における液体の充填量の規定値を液体の体積とし、あるいは容器の容積からヘッドスペースの容積を差し引いた値を液体の体積として、この体積と酸素濃度とから溶存酸素量を求めることができる。中空針を介してヘッドスペースの圧力を測定し、あるいは、中空針を介してタンクと液体とを連通させているので、酸素濃度の測定に引き続いてヘッドスペースの容積を直ちに求めることができる。従って、測定効率が高く、測定に要する手間が軽減され、測定に必要な装置の構成も簡素化される。
2 容器
3 ヘッドスペース
4 容器内の液体
10 蛍光式酸素濃度計
11 プローブ
12 信号処理装置
13 光ファイバケーブル
14 センサチップ
20 ピアス装置
21 支持台
22 案内機構
23 ヘッドユニット
24 ヘッド
25 シールリング
26 弁機構
28 中空針
28a 中空針の内部空間
29 シールリング
30 圧力検出路
31 ガス導入路
32 弁体
34 アクチュエータ
40A、40B 管路
41 ガスボンベ
42A、42B 手動式開閉弁
43、44、47 開閉弁
45 圧力計
46 アキュームタンク
48 温度計
Claims (7)
- プローブの先端の蛍光物質から発せられる蛍光を検出し、その検出結果に基づいて前記蛍光物質の周囲の酸素濃度を測定する蛍光式酸素濃度計を利用して、液体が詰められた密封状態の容器内の酸素量を測定する密封容器内の酸素量測定方法であって、
中空針をその内部空間が当該中空針の先端を除いて外部から閉じられた状態で前記容器に突き刺して前記内部空間を前記容器内のヘッドスペースに連通させる工程と、
前記中空針を介して前記プローブを前記容器内に挿入し、前記蛍光物質を前記容器内のヘッドスペースに位置させて該ヘッドスペースの酸素濃度を測定する工程と、
前記蛍光物質が前記容器内の液体に浸るように前記プローブをさらに挿入して前記液体中の溶存酸素濃度を測定する工程と、
を備えたことを特徴とする密封容器内の酸素量測定方法。 - 前記中空針を介して前記ヘッドスペース内の圧力を測定する工程と、容積一定のタンクの圧力を測定する工程と、前記液体の酸素濃度の測定後に前記タンクと前記ヘッドスペースとを前記中空針を介して連通させて前記ヘッドスペースの圧力を測定する工程と、測定された各圧力と前記タンクの容積とから前記ヘッドスペースの容積を求める工程とをさらに備えたことを特徴とする請求項1に記載の酸素量測定方法。
- 蛍光式酸素濃度計のプローブが内部空間に挿通可能であり、かつ先端が密封容器に対して突き刺し可能な中空針と、
前記中空針の内部空間を当該中空針の先端を除いて外部からシールするシール手段と、 前記中空針の内部空間の圧力を検出する容器内圧力検出手段と、
前記中空針の前記内部空間と接続される容積一定のタンクと、
前記タンクと前記中空針の前記内部空間との間の連通及び連通遮断状態を切り替えるタンク弁と、
前記中空針の前記内部空間に対して連通遮断状態にあるときの前記タンクの圧力を検出するタンク内圧力検出手段と、
を備えたことを特徴とする容器のピアス装置。 - 前記中空針の前記内部空間に圧力検出路が接続され、前記圧力検出路には第1の開閉弁及び前記中空針に対して前記第1の開閉弁よりも遠方に位置する第2の開閉弁が接続され、前記タンクは前記第1及び第2の開閉弁の間にて前記圧力検出路に接続され、前記タンク弁は前記圧力検出路と前記タンクとの間に配置され、前記第1及び第2の開閉弁間には前記容器内圧力検出手段及び前記タンク内圧力検出手段として共用される圧力計が接続されていることを特徴とする請求項3に記載のピアス装置。
- 前記中空針に対して前記第2の開閉弁のさらに遠方にはガス供給源が接続されていることを特徴とする請求項4に記載のピアス装置。
- 前記中空針の前記内部空間には不活性ガスを導入するためのパージ流路がさらに接続されるとともに、前記パージ流路を開閉する弁機構をさらに備えていることを特徴とする請求項3に記載のピアス装置。
- 前記中空針の前記内部空間には圧力検出路及び前記内部空間に不活性ガスを導入するためのパージ流路が接続され、前記圧力検出路には第1の開閉弁及び前記中空針に対して前記第1の開閉弁よりも遠方に位置する第2の開閉弁が接続され、前記タンクは前記第1及び第2の開閉弁の間にて前記圧力検出路に接続され、前記タンク弁は前記圧力検出路と前記タンクとの間に配置され、前記第1及び第2の開閉弁間には前記容器内圧力検出手段及び前記タンク内圧力検出手段として共用される圧力計が接続され、前記中空針に対して前記第2の開閉弁のさらに遠方には不活性ガス供給源が接続され、前記不活性ガス供給源はさらに前記弁機構を介して前記パージ流路にも接続され、前記パージ流路を開閉する弁機構をさらに備えていることを特徴とする請求項3に記載のピアス装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2005156084A JP4358785B2 (ja) | 2005-05-27 | 2005-05-27 | 密封容器内の酸素量の測定方法及びこれに用いる密封容器のピアス装置 |
US11/914,731 US7736590B2 (en) | 2005-05-27 | 2006-05-26 | Method for measuring oxygen amount in hermetically sealed container and piercing device for hermetically sealed container used therefore |
PCT/JP2006/310574 WO2006126683A1 (ja) | 2005-05-27 | 2006-05-26 | 密封容器内の酸素量の測定方法及びこれに用いる密封容器のピアス装置 |
EP06746903.1A EP1887344B1 (en) | 2005-05-27 | 2006-05-26 | Method for measuring oxygen amount in hermetically sealed container |
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JP2005156084A JP4358785B2 (ja) | 2005-05-27 | 2005-05-27 | 密封容器内の酸素量の測定方法及びこれに用いる密封容器のピアス装置 |
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JP2007198735A JP2007198735A (ja) | 2007-08-09 |
JP4358785B2 true JP4358785B2 (ja) | 2009-11-04 |
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US (1) | US7736590B2 (ja) |
EP (1) | EP1887344B1 (ja) |
JP (1) | JP4358785B2 (ja) |
WO (1) | WO2006126683A1 (ja) |
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US9274060B1 (en) | 2011-01-13 | 2016-03-01 | Mocon, Inc. | Methods for transmembrane measurement of oxygen concentration and monitoring changes in oxygen concentration within a space enclosed by a membrane employing a photoluminescent transmembrane oxygen probe |
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2005
- 2005-05-27 JP JP2005156084A patent/JP4358785B2/ja active Active
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2006
- 2006-05-26 EP EP06746903.1A patent/EP1887344B1/en active Active
- 2006-05-26 US US11/914,731 patent/US7736590B2/en active Active
- 2006-05-26 WO PCT/JP2006/310574 patent/WO2006126683A1/ja active Application Filing
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Publication number | Publication date |
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JP2007198735A (ja) | 2007-08-09 |
EP1887344B1 (en) | 2019-04-24 |
EP1887344A1 (en) | 2008-02-13 |
US7736590B2 (en) | 2010-06-15 |
WO2006126683A1 (ja) | 2006-11-30 |
EP1887344A4 (en) | 2012-12-05 |
US20090084156A1 (en) | 2009-04-02 |
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