FR2110742A5 - Automatic periodic water testing appts - for determn of chemical oxygen demand - Google Patents
Automatic periodic water testing appts - for determn of chemical oxygen demandInfo
- Publication number
- FR2110742A5 FR2110742A5 FR7038997A FR7038997A FR2110742A5 FR 2110742 A5 FR2110742 A5 FR 2110742A5 FR 7038997 A FR7038997 A FR 7038997A FR 7038997 A FR7038997 A FR 7038997A FR 2110742 A5 FR2110742 A5 FR 2110742A5
- Authority
- FR
- France
- Prior art keywords
- determn
- oxygen demand
- chemical oxygen
- water testing
- automatic periodic
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title 1
- 229910052760 oxygen Inorganic materials 0.000 title 1
- 239000001301 oxygen Substances 0.000 title 1
- 230000000737 periodic effect Effects 0.000 title 1
- 239000000126 substance Substances 0.000 title 1
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 abstract 2
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical class [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000004737 colorimetric analysis Methods 0.000 abstract 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 abstract 1
- 230000035484 reaction time Effects 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
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
- G01N33/18—Water
- G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Emergency Medicine (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The organic matter in polluted water is oxidised by an excess of potassium dichromate in a boiling acid medium, in the presence of silver and mercury sulphates. After a reaction time of two hours the excess dichromate is determined by a colorimetric method. The C.O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7038997A FR2110742A5 (en) | 1970-10-22 | 1970-10-22 | Automatic periodic water testing appts - for determn of chemical oxygen demand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7038997A FR2110742A5 (en) | 1970-10-22 | 1970-10-22 | Automatic periodic water testing appts - for determn of chemical oxygen demand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2110742A5 true FR2110742A5 (en) | 1972-06-02 |
Family
ID=9063452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7038997A Expired FR2110742A5 (en) | 1970-10-22 | 1970-10-22 | Automatic periodic water testing appts - for determn of chemical oxygen demand |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2110742A5 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1012798C2 (en) * | 1999-08-09 | 2001-02-12 | Cdem Holland Bv | Method for determining the oxygen requirement for burning a fuel, method for burning a fuel and device therefor. |
| CN112485099A (en) * | 2020-11-23 | 2021-03-12 | 陕西彩虹新材料有限公司 | Preparation method of COD mixed digesting agent |
-
1970
- 1970-10-22 FR FR7038997A patent/FR2110742A5/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1012798C2 (en) * | 1999-08-09 | 2001-02-12 | Cdem Holland Bv | Method for determining the oxygen requirement for burning a fuel, method for burning a fuel and device therefor. |
| WO2001011357A2 (en) * | 1999-08-09 | 2001-02-15 | Cdem Holland B.V. | Method of determining the oxygen requirement for the combustion of a fuel, method of combusting a fuel and an apparatus therefor |
| WO2001011357A3 (en) * | 1999-08-09 | 2001-08-09 | Cdem Holland Bv | Method of determining the oxygen requirement for the combustion of a fuel, method of combusting a fuel and an apparatus therefor |
| CN112485099A (en) * | 2020-11-23 | 2021-03-12 | 陕西彩虹新材料有限公司 | Preparation method of COD mixed digesting agent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |