GB1229094A - - Google Patents
Info
- Publication number
- GB1229094A GB1229094A GB1229094DA GB1229094A GB 1229094 A GB1229094 A GB 1229094A GB 1229094D A GB1229094D A GB 1229094DA GB 1229094 A GB1229094 A GB 1229094A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gases
- flame
- duct
- atomic absorption
- extractor fan
- 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
Classifications
-
- 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
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/72—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flame burners
Landscapes
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
1,229,094. Atomic absorption spectrophotometer. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 19, 1969 [Oct. 1, 1968], No.46385/69. Heading G1A. An installation for atomic absorption spectrophotometry for the analysis of radio-active solutions, comprises a chamber 17 having a burner 1 and a device for spraying into the flame a solution containing an element to be determined said burner being supplied with combustion gases from cylinders 6 and 7. Light from a discharge tube 22 having a cathode formed of the same element is shone through windows 21 and the flame into a spectrometer 24 for measurement of the atomic absorption. The gases and vapours produced are removed by duct 28 having a high power extractor fan 30 such that the gases and vapours are passed through a bubbling column 31 containing dilute sulphuric acid and fitted with Raschig rings, through cooling coil 36 and two filters 38 and 39 into a second column 42 for bubbling through sodium hydroxide and thence via extractor fan 30 and duct extremity 29 into the atmosphere. Further cooling of the gases is effected by a stream of air, circulated through the vacuum tight chambers 17 towards duct 28 and from a closure member having an elastic sleeve 44, placed in the chamber wall so as to open under the action of the reduced pressure produced by extractor fan 30. The radioactive wastes produced can be removed by means of extractor valve 35. Safety devices are included for monitoring the flame and measuring the rate of flow and temperature of the gases.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR168284 | 1968-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1229094A true GB1229094A (en) | 1971-04-21 |
Family
ID=8655139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1229094D Expired GB1229094A (en) | 1968-10-01 | 1969-09-19 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE738810A (en) |
| DE (1) | DE6937452U (en) |
| FR (1) | FR1586938A (en) |
| GB (1) | GB1229094A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255217A (en) * | 2020-09-29 | 2021-01-22 | 中核核电运行管理有限公司 | Sodium flame method detecting system |
-
1968
- 1968-10-01 FR FR1586938D patent/FR1586938A/fr not_active Expired
-
1969
- 1969-09-12 BE BE738810D patent/BE738810A/xx unknown
- 1969-09-19 GB GB1229094D patent/GB1229094A/en not_active Expired
- 1969-09-24 DE DE19696937452 patent/DE6937452U/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE738810A (en) | 1970-02-16 |
| FR1586938A (en) | 1970-03-06 |
| DE6937452U (en) | 1970-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |