GB1149832A - Determination of nitrogen - Google Patents
Determination of nitrogenInfo
- Publication number
- GB1149832A GB1149832A GB8087/67A GB808767A GB1149832A GB 1149832 A GB1149832 A GB 1149832A GB 8087/67 A GB8087/67 A GB 8087/67A GB 808767 A GB808767 A GB 808767A GB 1149832 A GB1149832 A GB 1149832A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrogen
- ammonia
- feb
- electrodes
- imbalance
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title abstract 8
- 229910052757 nitrogen Inorganic materials 0.000 title abstract 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 8
- 229910021529 ammonia Inorganic materials 0.000 abstract 4
- 239000001257 hydrogen Substances 0.000 abstract 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- -1 hydrogen ions Chemical class 0.000 abstract 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000000840 electrochemical analysis Methods 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 238000004448 titration Methods 0.000 abstract 1
Classifications
-
- 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
- G01N31/002—Determining nitrogen by transformation into ammonia, e.g. KJELDAHL method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/42—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
- G01N27/44—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte using electrolysis to generate a reagent, e.g. for titration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
- Y10T436/115831—Condition or time responsive
- Y10T436/116664—Condition or time responsive with automated titrator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/17—Nitrogen containing
- Y10T436/176152—Total nitrogen determined
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
1,149,832. Electro-chemical analysis. STANDARD OIL CO. Feb.21, 1967 [Feb.21, 1966], No.8087/67. Heading GIN. The nitrogen content of a nitrogen-containing material is determined by a process comprising catalytically converting the nitrogen to ammonia and automatically titrating the ammonia electrochemically. The nitrogen-containing material may be converted to ammonia over a heated nickel/magnesia catalyst in the presence of humidified hydrogen in tube 2. The ammonia is introduced into the titration zone of cell 4 and is detected by sensing electrode pair 12, 14, causing imbalance between the potential difference between these electrodes and a reference potential. The imbalance is applied as a signal causing the generation of hydrogen ions by electrodes 8, 10. The amount of electricity required to produce enough hydrogen ions to restore the balance is a measure of the amount of nitrogen in the material under test.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52873266A | 1966-02-21 | 1966-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1149832A true GB1149832A (en) | 1969-04-23 |
Family
ID=24106931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8087/67A Expired GB1149832A (en) | 1966-02-21 | 1967-02-21 | Determination of nitrogen |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3461042A (en) |
| FR (1) | FR1516307A (en) |
| GB (1) | GB1149832A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5338957B2 (en) * | 1972-12-11 | 1978-10-18 | ||
| US3964869A (en) * | 1973-03-01 | 1976-06-22 | N.K. Verwaltungs Ag | Analytical apparatus for serial determination of nitrogen in samples by the Kjeldahl method |
| US3929587A (en) * | 1974-09-23 | 1975-12-30 | Delta F Corp | Apparatus and method for maintaining a stable electrolyte in oxygen analysis |
| DE2534773A1 (en) * | 1975-08-04 | 1977-02-17 | Max Planck Gesellschaft | METHOD AND DEVICE FOR DIRECT MICRO-DETERMINATION AND TRACE DETERMINATION OF NITROGEN IN THESE SUBSTANCES |
| US4348359A (en) * | 1980-07-16 | 1982-09-07 | Mitsubishi Chemical Industries, Limited | Device for determining various types of trace nitrogen |
| US4409080A (en) * | 1981-06-18 | 1983-10-11 | Texaco Inc. | System for monitoring a cathodically protected structure |
| US4929314A (en) * | 1989-07-07 | 1990-05-29 | The Dow Chemical Company | Coulometric titrator apparatus and method |
| CA2165827A1 (en) * | 1993-06-22 | 1995-01-05 | John Vincent Dobson | Electrochemical sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2758079A (en) * | 1950-03-29 | 1956-08-07 | Leeds & Northrup Co | Electrolytic determination of the concentration of a constituent in a fluid |
| US2832734A (en) * | 1952-02-14 | 1958-04-29 | Leeds & Northrup Co | Coulometric systems |
| US2954336A (en) * | 1957-07-30 | 1960-09-27 | Standard Oil Co | Universal titrating agent generator |
-
1966
- 1966-02-21 US US528732A patent/US3461042A/en not_active Expired - Lifetime
-
1967
- 1967-02-21 GB GB8087/67A patent/GB1149832A/en not_active Expired
- 1967-02-21 FR FR95857A patent/FR1516307A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3461042A (en) | 1969-08-12 |
| FR1516307A (en) | 1968-03-08 |
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