CN102798599A - Portable gas-phase molecular absorption spectrometer - Google Patents
Portable gas-phase molecular absorption spectrometer Download PDFInfo
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- CN102798599A CN102798599A CN201210121247XA CN201210121247A CN102798599A CN 102798599 A CN102798599 A CN 102798599A CN 201210121247X A CN201210121247X A CN 201210121247XA CN 201210121247 A CN201210121247 A CN 201210121247A CN 102798599 A CN102798599 A CN 102798599A
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Abstract
The invention discloses a portable gas-phase molecular absorption spectrometer, relates to the technical field of optical analysis, and aims to solve the problems that a detection device in the conventional gas-phase molecular absorption spectrometer is complicated in structure, complicated in operation and inconvenient to carry and cannot meet requirements on content determination of outdoor objects to be detected. The portable gas-phase molecular absorption spectrometer comprises a sampling device, a heating device, a gas liquid separation device, a drying device and the detection device, wherein the detection device comprises a sensor, a detector, a signal processing system, a control system and a read-out system, which are sequentially connected; and the sensor is positioned at a gas output port of the gas liquid separation device. The portable gas-phase molecular absorption spectrometer is particularly applicable to determination of ammonia nitrogen, sulfide, Kjeldahl nitrogen, total nitrogen, nitrate, nitrite, sulfite, chloride ions and permanganate index.
Description
Technical field
The present invention relates to the optic analytical instrument technical field, relate in particular to a kind of portable gas phase molecular absorption spectrometer.
Background technology
Gas-phase molecular absorption spectrometry method (hereinafter to be referred as GPMAS) is based on gas that tested one-tenth branch resolves into and the relation of the absorption intensity of light and measured component concentration is observed this principle of law of Beer carries out quantitative measurement; According to the difference of absorbing wavelength, also can confirm tested composition and carry out qualitative analysis.Gas phase molecular absorption spectrometer is based on the GPMAS principle; Through chemical reaction the composition to be measured in the liquid phase sample is converted into gas; Make gas from liquid phase sample, separate and be written into the content that measuring system is measured gas, calculate the equipment of constituent concentration to be measured in the sample at last.It is used to measure ammonia nitrogen, sulfide, kjeldahl nitrogen, total nitrogen, nitrate, nitrite, sulphite, chlorion, permanganate index.
See also Fig. 1; Be illustrated as the structured flowchart of gas phase molecular absorption spectrometer of the prior art, it comprises flashlight power supply, line source lamp, preceding/rear lens group L1 and L2, absorption cell, sample product reactor, pneumatic pump, monochromator, detecting device, the online heating arrangement of temperature control, signal processing system, control system and read-out system.The output of flashlight power supply is connected to the line source lamp; Preceding/rear lens group L1 and L2 are arranged at the rear and front end of absorption cell respectively; Monochromator is connected with rear lens group, and the output terminal of monochromator links to each other with read-out system through detecting device, signal processing system, control system successively; Sample product reactor one end is connected with absorption cell, and control system links to each other with the other end of sample product reactor through pneumatic pump, and the online heating arrangement of temperature control links to each other with sample product reactor.Molecular vibration takes place and absorbs in the ground state gas molecule when accepting ultraviolet radiation, calculate molecular conecentration according to the degree that is absorbed of light.But the ultraviolet detecting apparatus complex structure that is provided with in this instrument, complex operation is not easy to carry, and can not satisfy the demand of outdoor object under test assay.
Summary of the invention
To the pick-up unit complex structure in the existing gas phase molecular absorption spectrometer, complex operation is not easy to carry, and can not satisfy the problem of the demand of outdoor object under test assay, the purpose of this invention is to provide a kind of portable gas phase molecular absorption spectrometer.
The technical solution adopted for the present invention to solve the technical problems is: it comprises sampling device, heating arrangement, gas-liquid separation device, drying device and pick-up unit; Said pick-up unit comprises sensor, detecting device, signal processing system, control system and the read-out system that connects successively, and said sensor is positioned at the gas delivery port place of said gas-liquid separation device.
Further, said sensor is gas sensor or ultrasonic sensor.
Preferably, said gas sensor is semiconductor gas sensor, electrochemical gas sensor, catalytic combustion method gas sensor, thermal conductivity gas sensor or infrared gas sensor.
The effect of this patent is: adopt sensor to substitute flashlight power supply, line source lamp and lens combination in the existing gas phase molecular absorption spectrometer pick-up unit; Simplified the structure of pick-up unit; The instrument production cost reduces; And be easy to carry, can the object under test of open air be detected, the instrument scope of application is extensive.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further;
Fig. 1 is the prior art constructions synoptic diagram;
Fig. 2 is a structural representation of the present invention;
Label declaration among the figure:
1-pick-up unit 101-sensor
102-detecting device 103-signal processing system
104-control system 105-read-out system
Embodiment
In conjunction with Fig. 2 a kind of portable gas phase molecular absorption spectrometer of the present invention is described; It comprises sampling device, heating arrangement, gas-liquid separation device, drying device and pick-up unit, and sampling device arrives heating arrangement with the reagent and the sample delivery of reaction needed, forms gas and mixtures of liquids in the course of conveying; Potpourri gets into gas-liquid separation device behind heating arrangement; Realize gas and fluid separation applications, gained gas obtains analysis result through the pick-up unit detection computations after the drying device drying.Wherein, pick-up unit 1 comprises sensor 101, detecting device 102, signal processing system 103, the control system 104 and read-out system 105 that connects successively, and sensor 101 is positioned at the gas delivery port place of gas-liquid separation device.Sensor 101 is gas sensor or ultrasonic sensor; Be used for the composition of detected gas and the gas sensor of content, can be divided into semiconductor gas sensor, electrochemical gas sensor, catalytic combustion method gas sensor, thermal conductivity gas sensor or infrared gas sensor.The infrared gas sensor can be differentiated the kind of gas effectively, accurately measures the concentration of gas, NDIR type sensor, barrier film Galvanic type sensor and galvanochemistry type sensor.
Those skilled in the art will recognize that; Above-mentioned embodiment is exemplary; Be in order to make those skilled in the art can better understand this patent content; Should not be construed as is the restriction to this patent protection domain, changes or modifies so long as disclose spiritual any being equal to of being done according to this patent, all falls into this patent protection domain.
Claims (3)
1. portable gas phase molecular absorption spectrometer; Comprise sampling device, heating arrangement, gas-liquid separation device, drying device and pick-up unit; It is characterized in that: said pick-up unit comprises sensor, detecting device, signal processing system, control system and the read-out system that connects successively, and said sensor is positioned at the gas delivery port place of said gas-liquid separation device.
2. gas phase molecular absorption spectrometer according to claim 1 is characterized in that: said sensor is gas sensor or ultrasonic sensor.
3. gas phase molecular absorption spectrometer according to claim 2 is characterized in that: said gas sensor is semiconductor gas sensor, electrochemical gas sensor, catalytic combustion method gas sensor, thermal conductivity gas sensor or infrared gas sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210121247XA CN102798599A (en) | 2012-04-23 | 2012-04-23 | Portable gas-phase molecular absorption spectrometer |
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| CN201210121247XA CN102798599A (en) | 2012-04-23 | 2012-04-23 | Portable gas-phase molecular absorption spectrometer |
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| CN102798599A true CN102798599A (en) | 2012-11-28 |
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| CN201210121247XA Pending CN102798599A (en) | 2012-04-23 | 2012-04-23 | Portable gas-phase molecular absorption spectrometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546546A (en) * | 2016-12-09 | 2017-03-29 | 北京东方安杰科技有限公司 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
| CN108120691A (en) * | 2016-11-29 | 2018-06-05 | 上海安杰环保科技股份有限公司 | Gas phase molecular absorption spectrometer |
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2012
- 2012-04-23 CN CN201210121247XA patent/CN102798599A/en active Pending
Patent Citations (6)
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| JP2006242836A (en) * | 2005-03-04 | 2006-09-14 | Figaro Eng Inc | Liquid electrochemical gas sensor |
| US20090057150A1 (en) * | 2007-01-11 | 2009-03-05 | Life Safety Distribution Ag | Electrochemical gas sensor |
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| CN201681043U (en) * | 2010-01-08 | 2010-12-22 | 上海安杰环保科技有限公司 | Gas phase molecular absorption spectrometer |
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Non-Patent Citations (2)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120691A (en) * | 2016-11-29 | 2018-06-05 | 上海安杰环保科技股份有限公司 | Gas phase molecular absorption spectrometer |
| CN106546546A (en) * | 2016-12-09 | 2017-03-29 | 北京东方安杰科技有限公司 | A kind of gas phase molecular absorption spectrometer using infiltration absorption dehydration device |
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Application publication date: 20121128 |