JPS57191542A - Measuring method for dissolved oxygen - Google Patents
Measuring method for dissolved oxygenInfo
- Publication number
- JPS57191542A JPS57191542A JP56077005A JP7700581A JPS57191542A JP S57191542 A JPS57191542 A JP S57191542A JP 56077005 A JP56077005 A JP 56077005A JP 7700581 A JP7700581 A JP 7700581A JP S57191542 A JPS57191542 A JP S57191542A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- concentration
- dissolved oxygen
- sample water
- air
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
PURPOSE:To measure dissolved oxygen simply, by aerating air to a liquid to be measured and measuring the concentration of oxygen of a gas after aeration. CONSTITUTION:A blastipipe 2 is provided so as to open at a suitable depth in a liquid reagent to be measured 1 and air is aerated. The concentration of oxygen of a gas after aeration is measured by an oxygen detector 3 attached to the upper part of a cylindrical vessel 4. In the case where sample water is equillibrated with oxygen in air, e.g. when the concentration of dissolved oxygen is 9.76ppm at 15 deg.C, the concentration oxygen in the air passing through the sample water is not varied and dissolved oxygen is bubbled out in a gas phase at 21% oxygen concentration after passing through the sample water. In the case where the concentration of the dissolved oxygen in the sample water is low, dissolution of oxygen is carried out at the time of passing through the sample water and dissolved oxygen is bubbled out in the oxygen concentration lower than 21%. For example, in the case where the concentration of dissolved oxygen is 4.88ppm at 15 deg., the concentration of oxygen of the gas in an equillibrium state is 10.5% and the value in accordance with the concentration is detected by a detector.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56077005A JPS57191542A (en) | 1981-05-21 | 1981-05-21 | Measuring method for dissolved oxygen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56077005A JPS57191542A (en) | 1981-05-21 | 1981-05-21 | Measuring method for dissolved oxygen |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57191542A true JPS57191542A (en) | 1982-11-25 |
JPH0130421B2 JPH0130421B2 (en) | 1989-06-20 |
Family
ID=13621642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56077005A Granted JPS57191542A (en) | 1981-05-21 | 1981-05-21 | Measuring method for dissolved oxygen |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57191542A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62135955U (en) * | 1986-02-20 | 1987-08-27 | ||
EP0355688A2 (en) * | 1988-08-20 | 1990-02-28 | MAN Roland Druckmaschinen AG | Method for measuring the alcohol content of a damping liquid in an alcohol damping device of an offset printing machine |
-
1981
- 1981-05-21 JP JP56077005A patent/JPS57191542A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62135955U (en) * | 1986-02-20 | 1987-08-27 | ||
EP0355688A2 (en) * | 1988-08-20 | 1990-02-28 | MAN Roland Druckmaschinen AG | Method for measuring the alcohol content of a damping liquid in an alcohol damping device of an offset printing machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0130421B2 (en) | 1989-06-20 |
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