CN203231974U - Photoelectric detection device of trimethylamine - Google Patents
Photoelectric detection device of trimethylamine Download PDFInfo
- Publication number
- CN203231974U CN203231974U CN 201320089719 CN201320089719U CN203231974U CN 203231974 U CN203231974 U CN 203231974U CN 201320089719 CN201320089719 CN 201320089719 CN 201320089719 U CN201320089719 U CN 201320089719U CN 203231974 U CN203231974 U CN 203231974U
- Authority
- CN
- China
- Prior art keywords
- trimethylamine
- catalytic
- photoelectric
- heating rod
- display
- 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 - Fee Related
Links
Images
Abstract
The utility model relates to a detection device for rapidly monitoring trace trimethylamine in air. The device comprises a trimethylamine catalytic illuminator, a selective light filter, a photoelectric converter and a display, wherein the trimethylamine catalytic illuminator, the selective light filter and the photoelectric converter are arranged inside a camera obscura; the trimethylamine catalytic illuminator is a core apparatus of the detector, and comprises a quartz reaction tube and a ceramic heating rod; the quartz reaction tube includes air inlet and outlet; the ceramic heating rod is sealed at the surface; a catalyst is sintered at the surface of the ceramic heating rod; the surface temperature of the heating rod can be adjusted by a temperature controller; the catalyst has a selective catalytic luminescence effect on the trimethylamine; the film forming thickness is 1-2mm; the central wavelength of the selective light filter is 340nm; the photoelectric converter is composed of a photomuitplier or a photon counter and an amplifier; and the display is used for displaying a determination result. The photoelectric detection device is high in sensitivity, convenient to use, and convenient to carry; and in situ-measurement of the trace trimethylamine in the air can be achieved.
Description
Technical field
The utility model relate to a kind of can on-the-spot fast monitored air in the photoelectric detection system of micro-trimethylamine, belong to the environment measuring technical field.
Background technology
Trimethylamine (TMA) is the simplest tertiary amine, is colourless gas under the normal temperature, and the gas (fishy smell of fish products mainly comes from trimethylamine) of the stench flavor of fish is arranged, and is water-soluble, ethanol, ether, inflammable, explosive, poisonous, relative density (water=1) 0.66 (5 ℃), (air=1) 2.09.Molecular formula is C
3H
9N can be used as analytical reagent, and purposes is also arranged in organic synthesis.
Airborne trimethylamine has stronger spread effect to people's eye, nose, throat and respiratory tract, long-term contact harm is bigger, the existence of trimethylamine and concentration thereof are the major criterions of assessment meat and fish food quality, it is the odor identification that characterizes some metabolic deficiency disease, being the main object of environment odor pollution control, is the key parameter of some industrial and agricultural production quality control.Therefore, the accurate mensuration of trimethylamine concentration is significant.The detection method of trimethylamine has a variety of, and better simply have acid base titration, the kjeldahl determination way of distillation, but these two kinds of methods analyst resultant errors are big, only makes Preliminary Determination and uses; Spectrophotometric method, the chromatography of ions, high performance liquid chromatography, headspace gas chromatography, column front derivation vapor-phase chromatography, direct injected vapor-phase chromatography, though method detection sensitivity height such as vapor-phase chromatography, quantitatively accurate, but need expensive analytical instrument to finish, can't walk out the laboratory, be difficult for on-the-spot the realization.In recent years, also occurred some hand-held analyzers and simple and easy monitoring equipment in succession, but weak points such as short, poor stability of life-span or sensitivity is low have been arranged mostly.
Summary of the invention
The purpose of this utility model provide a kind of highly sensitive, easy to use, measure rapidly, be suitable for the photoelectric detection system of the on-the-spot micro-trimethylamine that uses.
For achieving the above object, the utility model is designed a kind of gas detecting instrument according to catalytic luminescence and photoelectricity transformation principle.This detector is made of catalytic luminescence device, selection optical filter, photoelectric commutator and the display of trimethylamine, wherein the catalytic luminescence device of trimethylamine, selection optical filter and photoelectric commutator are arranged in the camera bellows, the catalytic luminescence device of trimethylamine is the core devices of this detector, it by the crystal reaction tube with gas inlet and outlet and be closed in wherein surperficial sintering the ceramic heat rod of catalyzer form.The surface temperature of heating rod can be regulated by temperature controller; Catalyzer has the effect of the catalytic luminescence of selection, film forming thickness 1-2mm to trimethylamine; Selecting the centre wavelength of optical filter is 340nm; Photoelectric commutator is made up of photomultiplier and amplifier; Display is in order to show measurement result.
Before micro-trimethylamine is measured in to air, at first on the ceramic heat rod, sinter the high selecting catalyst of elaborate special use into microporous barrier on request, place crystal reaction tube and sealing, feed pure air by air intake opening then, regulate proper temperature by temperature controller, can prepare to measure after stablizing.When tested gas entered crystal reaction tube, trimethylamine was in catalyst surface generation luminescence-producing reaction, and the luminous signal of generation enters photoelectric commutator, and the luminous intensity that represents trimethylamine content the most at last is presented on the display.
The utlity model has following evident characteristic:
1, selectivity is strong: use the exclusive catalyzer of high selectivity trimethylamine, have only trimethylamine that the catalytic luminescence phenomenon is arranged in particular range of wavelengths.
2, highly sensitive: classic method must concentrate by enricher could measure low concentration sample, can directly measure micro-trimethylamine in the air and basis is novel.
3, be easy to carry: this equipment volume is little, in light weight, can make things convenient for on-the site analysis.
4, long service life: because catalyzer is nonexpendable, can guarantee long-life and the advantages of higher stability of equipment.
Description of drawings
Fig. 1 is the structural representation of the photoelectric detection system of micro-trimethylamine.
Each assembly is among the figure: 1 air intake opening, 2 crystal reaction tubes, 3 catalyzer, 4 are selected optical filter, 5 photoelectric commutators, 6 displays, 7 gas outlets, 8 ceramic heat rods, 9 darkrooms, 10 temperature controllers.
Embodiment
Referring to accompanying drawing, the utility model is made of catalytic luminescence device, selection optical filter (4), photoelectric commutator (5) and the display (6) of trimethylamine, and wherein the catalytic luminescence device of trimethylamine, selection optical filter (4) and photoelectric commutator (5) are arranged in the camera bellows (9); The catalytic luminescence device of trimethylamine by the crystal reaction tube (2) with air intake opening (1) and gas outlet (7) and be closed in wherein surperficial sintering the ceramic heat rod (8) of catalyzer (3) form.The surface temperature of heating rod can be regulated by temperature controller (10); Catalyzer has the catalytic reaction of selection photosensitiveness, film forming thickness 1-2mm to trimethylamine; Selecting the centre wavelength of optical filter is 340nm; Photoelectric commutator (5) is made up of photomultiplier and amplifier; Display (6) is in order to show measurement result.
Before micro-trimethylamine is measured in to air, at first on ceramic heat rod (8), sinter the high selecting catalyst of elaborate special use into microporous barrier on request, place crystal reaction tube (2) and sealing, feed pure air by air intake opening (1) then, regulate proper temperature by temperature controller (10), can prepare to measure after stablizing.When tested gas entered crystal reaction tube (2), trimethylamine was in catalyst surface generation luminescence-producing reaction, and the luminous signal of generation enters photoelectric commutator (5), and the luminous intensity that represents trimethylamine content the most at last is presented on the display (6).
Claims (3)
1. the photoelectric detection system of a trimethylamine, it is characterized in that: described pick-up unit is by the catalytic luminescence device of trimethylamine, selects optical filter (4), photoelectric commutator (5) and display (6) to constitute, and wherein the catalytic luminescence device of trimethylamine, selection optical filter (4) and photoelectric commutator (5) are arranged in the camera bellows (9); The catalytic luminescence device of trimethylamine by the crystal reaction tube (2) with air intake opening (1) and gas outlet (7) and be closed in wherein surperficial sintering the ceramic heat rod (8) of catalyzer (3) form, the surface temperature of heating rod can be regulated by temperature controller (10); Photoelectric commutator (5) is made up of photomultiplier and amplifier; Display (6) is in order to show measurement result.
2. the photoelectric detection system of a kind of trimethylamine according to claim 1, it is characterized in that: the film forming thickness of described catalyzer is 1～2mm.
3. the photoelectric detection system of a kind of trimethylamine according to claim 1, it is characterized in that: the centre wavelength of described selection optical filter is 340nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089719 CN203231974U (en) | 2013-02-20 | 2013-02-20 | Photoelectric detection device of trimethylamine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089719 CN203231974U (en) | 2013-02-20 | 2013-02-20 | Photoelectric detection device of trimethylamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203231974U true CN203231974U (en) | 2013-10-09 |
Family
ID=49288094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320089719 Expired - Fee Related CN203231974U (en) | 2013-02-20 | 2013-02-20 | Photoelectric detection device of trimethylamine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203231974U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090051A (en) * | 2014-07-24 | 2014-10-08 | 山东龙大植物油有限公司 | Method for determining content of trimethylamine in edible oil |
| CN106781385A (en) * | 2016-12-21 | 2017-05-31 | 合肥工业大学 | The embedded catalytic luminescence image sensing device of sulfur hexafluoride remote real-time monitoring |
-
2013
- 2013-02-20 CN CN 201320089719 patent/CN203231974U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090051A (en) * | 2014-07-24 | 2014-10-08 | 山东龙大植物油有限公司 | Method for determining content of trimethylamine in edible oil |
| CN104090051B (en) * | 2014-07-24 | 2015-11-18 | 山东龙大植物油有限公司 | A kind of method measuring trimethylamine content in edible oil |
| CN106781385A (en) * | 2016-12-21 | 2017-05-31 | 合肥工业大学 | The embedded catalytic luminescence image sensing device of sulfur hexafluoride remote real-time monitoring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109459401A (en) | The on-line monitoring method and device of Formaldehyde Determination | |
| CN106442515B (en) | A kind of visual quantitative detecting method of simple silver ion | |
| CN206772932U (en) | A kind of device of on-line checking mixed gas concentration | |
| CN106596439A (en) | Apparatus and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air | |
| CN102967588A (en) | Formaldehyde fluorescence detector | |
| CN108088889B (en) | The device and method of negative ion mode ion mobility spectrometry on-line checking formaldehyde | |
| CN203231974U (en) | Photoelectric detection device of trimethylamine | |
| CN209570499U (en) | The on-Line Monitor Device of Formaldehyde Determination | |
| CN203941099U (en) | Gas phase molecular absorption spectrometer with on-line oxidation device | |
| CN204142624U (en) | A kind of online water monitoring device measured based on complex spectrum | |
| CN105675694B (en) | The measuring system and method for flue gas composition concentration | |
| CN205808918U (en) | A kind of field portable methylene oxide detecting instrument based on phenol reagent process | |
| RU2511022C2 (en) | Method of multi-criteria assessment of comfort of working area in production premises | |
| CN203101273U (en) | Portable formaldehyde concentration detecting device | |
| CN102721726A (en) | Method and device for measuring concentration of materials in fluid | |
| CN103207170B (en) | A kind of method analyzing arsenic morphology in mensuration food liquid condiment | |
| CN205484057U (en) | Sulfur dioxide analysis appearance | |
| CN103149202A (en) | Portable formaldehyde concentration detection apparatus and method | |
| CN206515230U (en) | It is a kind of at the same measure air in nitrous acid, ozone, the equipment of nitrogen dioxide | |
| CN203981592U (en) | A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method | |
| CN201876422U (en) | Device for detecting micro quantity of ethanol | |
| CN109884158A (en) | A kind of Non-radioactive methods for monitoring ammonia on-line | |
| CN103543170B (en) | A kind of method of quick detection concentration of ammonium nitrate solution | |
| CN102393390B (en) | Method for identifying organic matter by using single cataluminescence sensor | |
| CN206020144U (en) | Volatile organic matter sampling detector for multifunctional in a kind of water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140220 |