CN108507998A - A kind of sulfur dioxide detection device and its detection method - Google Patents

A kind of sulfur dioxide detection device and its detection method Download PDF

Info

Publication number
CN108507998A
CN108507998A CN201810201475.5A CN201810201475A CN108507998A CN 108507998 A CN108507998 A CN 108507998A CN 201810201475 A CN201810201475 A CN 201810201475A CN 108507998 A CN108507998 A CN 108507998A
Authority
CN
China
Prior art keywords
sulfur dioxide
detection
reaction
reaction bed
reaction chamber
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.)
Pending
Application number
CN201810201475.5A
Other languages
Chinese (zh)
Inventor
王伟杰
王小雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Ha Gong Ocean Engineering Technology Co Ltd
Original Assignee
Qingdao Ha Gong Ocean Engineering Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Ha Gong Ocean Engineering Technology Co Ltd filed Critical Qingdao Ha Gong Ocean Engineering Technology Co Ltd
Priority to CN201810201475.5A priority Critical patent/CN108507998A/en
Publication of CN108507998A publication Critical patent/CN108507998A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/76Chemiluminescence; Bioluminescence

Abstract

The invention discloses a kind of sulfur dioxide detection device and its detection methods,Including protecgulum,Rear cover and it is protected from light cavity,The protecgulum is connected with the rear cover,And closed reaction chamber is formed between the two,The reaction chamber is equipped with reaction bed close to one end of the protecgulum,The reaction chamber is equipped with inlet channel and outlet passageway at the diameter both ends of its horizontal direction,The top of the reaction bed is equipped with and the first feed pathway for being connected outside the protecgulum,Second feed pathway,The bottom end of the reaction bed is equipped with and the liquid outlet channel that is connected outside the protecgulum,The present invention solves the technological deficiency of sulfur dioxide detection device in the prior art,Realize the accuracy of detection and reliability for improving sulfur dioxide detection device,It provides a kind of with higher sensitivity and stability,It is simple in structure,It is easy to carry,Testing result accuracy high sulfur dioxide detection device and its detection method.

Description

A kind of sulfur dioxide detection device and its detection method
Technical field
The present invention relates to a kind of sulfur dioxide detection devices, and in particular to a kind of sulfur dioxide detection device and its detection side Method.
Background technology
Sulfur dioxide is that quantity is maximum, distribution is most wide, influences the gas pollutant of human life's property most serious in air One of and nitrogen oxides, carbon monoxide, hydrocarbon and particulate matter be considered as five big pollutant of air together, wherein two Sulfur oxide is the therein first big pollutant, is an important sources of acid rain, has to health and environmental ecology larger Harm.Sulfur dioxide in air mostlys come from artificial pollution, including fossil-fuel-fired and sulphur-containing substance industry life Production process, therefore the sulfur dioxide in Accurate Determining ambient air judges atmospheric pollution level for understanding atmosphere pollution mechanism, It determines pollution source, carries out air quality early warning, and help formulates rational urban planning and construction etc. and is all of great significance. Sulfur dioxide detection method in the prior art has some disadvantages, and either sensitivity degree is not high or detection is primary required Overlong time, or interfered by remaining sulfide gas, lead to, detection knot difficult to low-concentration sulfur dioxide gas detection The poor reliability of fruit.
Invention content
In view of the deficienciess of the prior art, the technical problem to be solved by the present invention is to solve dioxy in the prior art Change the technological deficiency of sulphur detection device, realizes the accuracy of detection and reliability for improving sulfur dioxide detection device, a kind of tool is provided Have higher sensitivity and stability, the sulfur dioxide detection device that simple in structure, easy to carry, testing result accuracy is high and its Detection method.
In order to solve the above technical problems, the technical solution used in the present invention is:A kind of sulfur dioxide detection device, including Protecgulum, rear cover and it is protected from light cavity, the protecgulum is connected with the rear cover and forms closed reaction chamber between the two, described Reaction chamber is equipped with reaction bed close to one end of the protecgulum, and the reaction chamber is logical equipped with air inlet at the diameter both ends of its horizontal direction Road and outlet passageway, the top of the reaction bed be equipped with be connected outside the protecgulum the first feed pathway, the second feed liquor Channel, the bottom end of the reaction bed be equipped with the liquid outlet channel that is connected outside the protecgulum, the rear cover is close to the reaction One end of chamber is equipped with light inlet window, reaction bed center described in the light transmission window center face, is kept away described in the light inlet window connection Optical cavity body, described be protected from light in cavity are equipped with photoelectric sensor.
Above-mentioned sulfur dioxide detection device, first feed pathway, the second feed pathway, liquid outlet channel are vertical at Reaction bed end face.
Above-mentioned sulfur dioxide detection device, the reaction bed are disposed vertically in the bottom of reaction chamber, the reaction bed two Side is equipped with groove and the reaction bed is fixed in filling elastic material.
Above-mentioned sulfur dioxide detection device, the reaction bed are glass fiber filter paper or PP non-woven fabrics.
Above-mentioned sulfur dioxide detection device, the light inlet window are pure quartz glass.
Above-mentioned sulfur dioxide detection device, the light inlet window are the pure quartz glass of 1mm thickness.
Above-mentioned sulfur dioxide detection device, the inside cavity that is protected from light are provided with drier.
Above-mentioned sulfur dioxide detection device, the drier, which is located at, is protected from light the sky formed between cavity and photoelectric sensor Intracavitary.
Above-mentioned sulfur dioxide detection method, includes the following steps:
Step 1: connecting a ferrous sulfate column in inlet channel, the filter of 10um is connected after column;
Step 2: connecting vacuum pump in outlet passageway, under the action of vacuum pump, gas to be detected enters instead from inlet channel It answers in chamber, and is drawn to outside reaction chamber from outlet passageway;
Step 3: the first feed pathway, the second feed pathway connect peristaltic pump, under the action of peristaltic pump, hydrogen peroxide agent It is entered respectively from the first feed pathway, the second feed pathway in reaction chamber and in gravity with the luminol reagent of potassium hydroxide It is uniformly diffused on reaction bed under effect and completes to mix, the mixing on sulfur dioxide gas and reaction bed in gas to be detected Surface chemistry luminescence-producing reaction occurs for reagent;Meanwhile liquid outlet channel is connected with peristaltic pump or vacuum pump, in peristaltic pump or vacuum pump Under effect, the reagent that reaction bed lower end was reacted is drawn to by liquid outlet channel outside reaction chamber;
Step 4: the optical signal that photoelectric sensor detection hydrophilic membrane surfaces chemiluminescence reaction generates, dense to export sulfur dioxide Corresponding electric signal is spent, electric signal is converted to sulfur dioxide concentration numerical value after computer calculation processing;
Step 5: after detection, reagent is changed into deionized water, logical liquid cleans reaction bed in 10 minutes or so, then Stop leading to liquid;It is 5 minutes to carrying out purging drying, drying time inside reaction bed and reaction chamber to be passed through dry gas.
The advantages of sulfur dioxide detection device and its detection method of the present invention is:
1, sulfur dioxide detection device and its detection method, photoelectric sensor can accurately detect the concentration of sulfur dioxide, And there is higher sensitivity and stability;Meanwhile sulfur dioxide detection device is based on liquid phase surface chemistry principle of luminosity, The concentration that the light that surface chemistry luminescence-producing reaction generates is detected sulfur dioxide occurs with reagent by detecting sulfur dioxide, is examining Survey during only sulfur dioxide, nitrogen dioxide, ozone can with corresponding reagent occur surface chemistry luminescence-producing reaction, therefore It needs allowing detected gas by a ferrous sulfate column when detection, to eliminate nitrogen dioxide and ozone gas therein, Remaining sulfide will not have an impact measurement result, so as to more accurately detect the concentration of sulfur dioxide.
2, sulfur dioxide detection device and its detection method, reaction bed provide area larger gas liquid reaction face, enhance The sensitivity of detection and stability;Drier, which may insure to be protected from light, is in drying regime in cavity, prevent in detection process by The side for causing cavity temperature to increase in the fever of photoelectric sensor, and being located at cavity in light inlet window generates water mist, influences to detect Stability.
3, sulfur dioxide detection device and its detection method, improve response speed and the sensitivity of detection, while also protecting The stability of detection is demonstrate,proved;Concentration of SO 2 gas inspection simple in structure, convenient to carry out, can be used under different occasions It surveys, the sulfur dioxide gas real time on-line monitoring being particularly suitable in the gaseous samples such as ambient air, flue gas emission.
4, sulfur dioxide detection device and its detection method are very good to the selectivity of sulfur dioxide;Also, remove titanium dioxide Outside sulphur gas, remaining sulfide will not have an impact measurement result, therefore can more accurately detect sulfur dioxide gas The concentration of body.
Description of the drawings
Fig. 1 is structure of the invention sectional view;
Fig. 2 is front cover portion structural schematic diagram of the present invention.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail:
As shown in Figure 1, 2, a kind of sulfur dioxide detection device, including protecgulum 1, rear cover 8 and it is protected from light cavity 10,1 He of the protecgulum The rear cover 8 is connected and forms closed reaction chamber 4 between the two, and the reaction chamber 4 is set close to one end of the protecgulum 1 There is reaction bed 5, the reaction chamber 4 is equipped with inlet channel 13 and outlet passageway 14 at the diameter both ends of its horizontal direction, described anti- The first feed pathway 2, the second feed pathway 3 for answering the top of bed 5 to be equipped with and be connected outside the protecgulum 1, the reaction bed 5 Bottom end be equipped with and be equipped with close to one end of the reaction chamber 4 with the liquid outlet channel 6 that is connected outside the protecgulum 1, the rear cover 8 Light inlet window 9, the light inlet window 9 connect protecgulum 1 and rear cover 8 by fixing buckle 7, reaction bed 5 described in 9 center face of the light inlet window Center, the light inlet window 9 connect it is described be protected from light cavity 10, described be protected from light in cavity 10 is equipped with photoelectric sensor 12.
First feed pathway 2, the second feed pathway 3, liquid outlet channel 6 are vertical at 5 end face of reaction bed.
The reaction bed 5 is disposed vertically in the bottom of reaction chamber 4, and 5 both sides of the reaction bed are equipped with groove and filling elasticity The reaction bed 5 is fixed in material 15.
The reaction bed 5 is glass fiber filter paper or PP non-woven fabrics.
The light inlet window 9 is pure quartz glass.
The light inlet window 9 is the pure quartz glass of 1mm thickness.
The cavity 10 that is protected from light is internally provided with drier 11.
The drier 11, which is located at, to be protected from light in the cavity formed between cavity 10 and photoelectric sensor 12.
Specifically, the present embodiment sulfur dioxide detection device is provided with reaction bed 5 in reaction chamber 4, the first feed liquor is logical Reagent can be transported in reaction chamber 4 by road 2 and the second feed pathway 3, and reagent under the effect of gravity can be in reaction bed 5 Upper Quick uniform is mixed and is spread apart, and gas to be detected is delivered in reaction chamber 4 by inlet channel 13, gas to be detected In sulfur dioxide will occur surface chemistry luminescence-producing reaction with mix reagent, and photoelectric sensor 12 will detect optical signal and convert For electric signal output, the electric signal that photoelectric sensor 12 exports passes through, and sulfur dioxide concentration can be converted to after calculation processing Numerical value.Photoelectric sensor 12 in the present embodiment can accurately detect the concentration of sulfur dioxide, and have higher spirit Sensitivity and stability;Meanwhile the present embodiment sulfur dioxide detection device is based on liquid phase surface chemistry principle of luminosity, passes through detection The concentration that the light that surface chemistry luminescence-producing reaction generates is detected sulfur dioxide occurs with reagent for sulfur dioxide, in detection process Only with corresponding reagent surface chemistry luminescence-producing reaction can occur for sulfur dioxide, nitrogen dioxide, ozone, therefore need when detecting Detected gas to be allowed by a ferrous sulfate column, to eliminate nitrogen dioxide and ozone gas therein, remaining sulfide Measurement result will not be had an impact, so as to more accurately detect the concentration of sulfur dioxide.
Further, the present embodiment sulfur dioxide detection device is using the first feed pathway 2, the second feed pathway 3, dioxy Change hydrogen peroxide needed for sulphur detection architecture and alkaline luminol reagent passes through independent first feed pathway 2, second respectively Feed pathway 3 enters reaction chamber 4, reaches the reaction bed 5 of reaction chamber 4 bottom, by the characteristic of 5 used material of reaction bed, two Kind reagent rapidly and uniformly mixes on reaction bed 5 and diffuses to entire reaction bed 5 rapidly, provides area larger gas liquid reaction Face enhances sensitivity and the stability of detection.Preferably, alkaline luminol reagent is entered by the first feed pathway 2 and is reacted Chamber 4, hydrogen peroxide agent enter reaction chamber 4 by the second feed pathway 3.Reaction bed 5, reaction bed are firmly fixed for convenience 5 it is vertical place, 4 bottom of reaction chamber is equipped with groove in 5 both sides of reaction bed, using corrosion resistant elastic material 15 to reaction bed 5 into Row is fixed, it is ensured that reaction bed 5 is tightly attached to reaction chamber bottom and prevents since the minute bubbles of reagent flowing and feed pathway are to reaction Bed 5 generates impact and reaction bed 5 is made to generate gap with 4 bottom of reaction chamber.
Further, it in order to improve the stability of the present embodiment sulfur dioxide detection device, is provided in the present embodiment It is protected from light cavity 10, the photoelectric sensor 12 for detecting chemiluminescence signal, which is placed on, to be protected from light in cavity 10, is protected from light in cavity 10 Also be placed with drier 11, drier 11, which may insure to be protected from light in cavity 10, is in drying regime, prevent in detection process by The side for causing 10 temperature of cavity to increase in the fever of photoelectric sensor 12, and being located at cavity 10 in light inlet window 9 generates water mist, shadow Ring the stability of detection.
A kind of detection method of sulfur dioxide detection device, includes the following steps:
Step 1: connecting a ferrous sulfate column in inlet channel 13, the filter of 10um is connected after column;
Step 2: connecting vacuum pump in outlet passageway 14, under the action of vacuum pump, gas to be detected enters from inlet channel 13 It is drawn to outside reaction chamber 4 into reaction chamber 4, and from outlet passageway 13;
Step 3: the first feed pathway 2, the second feed pathway 3 connect peristaltic pump, and under the action of peristaltic pump, hydrogen peroxide examination The luminol reagent of agent and potassium hydroxide entered in reaction chamber 4 from the first feed pathway 2, the second feed pathway 3 respectively and It is uniformly diffused on reaction bed 5 under the action of gravity and completes to mix, the sulfur dioxide gas in gas to be detected and reaction bed 5 On mix reagent occur surface chemistry luminescence-producing reaction;Meanwhile liquid outlet channel 6 is connected with peristaltic pump or vacuum pump, in peristaltic pump Or under the action of vacuum pump, the reagent that 5 lower end of reaction bed was reacted is drawn to by liquid outlet channel 6 outside reaction chamber 4;
Step 4: photoelectric sensor 12 detects the optical signal that hydrophilic membrane surfaces chemiluminescence reaction generates, to export sulfur dioxide The corresponding electric signal of concentration, electric signal are converted to sulfur dioxide concentration numerical value after computer calculation processing;
Step 5: after detection, reagent is changed into deionized water, logical liquid cleans reaction bed 5 in 10 minutes or so, then Stop leading to liquid;It is 5 minutes to carrying out purging drying, drying time inside reaction bed 5 and reaction chamber 4 to be passed through dry gas.
Sulfur dioxide detection device and its detection method provided by the invention, by being based on the luminous original of liquid phase surface chemistry Reason, sulfur dioxide can effectively reinforce gas liquid reaction after entering in reaction chamber 4, while detect gas by photoelectric sensor 12 The light that liquid reaction generates greatly improves response speed and the sensitivity of detection to obtain the concentration of sulfur dioxide, while It ensure that the stability of detection;In addition, reagent more Quick uniform can be mixed and be spread apart by reaction bed 5, it is more advantageous to Sulfur dioxide carries out abundant gas liquid reaction with reagent, improves the accuracy of detection and reliability of sulfur dioxide detection device.In addition, two The structure of sulfur oxide detection device is simply carried with outgoing, for the concentration of SO 2 gas detection under different occasions, especially Sulfur dioxide gas real time on-line monitoring suitable for the gaseous samples such as ambient air, flue gas emission.The detection device and its Detection method can generate the nitrogen dioxide of interference to detection and ozone gas is filtered by the effect of the ferrous sulfate column of front end It removes, therefore sulfur dioxide detection device provided by the invention and its detection method are very good to the selectivity of sulfur dioxide;Also, Except sulfur dioxide gas is external, remaining sulfide will not have an impact measurement result, therefore sulfur dioxide provided by the invention Detection device and its detection method can more be shown in the concentration for accurately detecting sulfur dioxide gas.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, the art Those of ordinary skill, the present invention essential scope in, variation, change, addition or the replacement made, should all belong to the present invention Protection domain.

Claims (9)

1. a kind of sulfur dioxide detection device, it is characterised in that:Including protecgulum(1), rear cover(8)Be protected from light cavity(10), described Protecgulum(1)With the rear cover(8)It is connected and forms closed reaction chamber between the two(4), the reaction chamber(4)Close to institute State protecgulum(1)One end be equipped with reaction bed(5), the reaction chamber(4)It is equipped with inlet channel at the diameter both ends of its horizontal direction (13)And outlet passageway(14), the reaction bed(5)Top be equipped with and the protecgulum(1)The first feed liquor that outside is connected is logical Road(2), the second feed pathway(3), the reaction bed(5)Bottom end be equipped with and the protecgulum(1)It is logical that outside was connected goes out liquid Road(6), the rear cover(8)Close to the reaction chamber(4)One end be equipped with light inlet window(9), the light inlet window(9)Center face institute State reaction bed(5)Center, the light inlet window(9)Cavity is protected from light described in connection(10), described to be protected from light cavity(10)Inside it is equipped with Photoelectric sensor(12).
2. sulfur dioxide detection device according to claim 1, it is characterised in that:First feed pathway(2), second Feed pathway(3), liquid outlet channel(6)It is vertical at reaction bed(5)End face.
3. sulfur dioxide detection device according to claim 2, it is characterised in that:The reaction bed(5)Be disposed vertically in Reaction chamber(4)Bottom, the reaction bed(5)Both sides are equipped with groove and filling elastic material(15)To the reaction bed(5)Into Row is fixed.
4. sulfur dioxide detection device according to claim 3, it is characterised in that:The reaction bed(5)For glass fibre Filter paper or PP non-woven fabrics.
5. sulfur dioxide detection device according to claim 4, it is characterised in that:The light inlet window(9)For high purity quartz Glass.
6. sulfur dioxide detection device according to claim 5, it is characterised in that:The light inlet window(9)For 1mm thickness Pure quartz glass.
7. sulfur dioxide detection device according to claim 6, it is characterised in that:It is described to be protected from light cavity(10)Inside setting There is drier(11).
8. sulfur dioxide detection device according to claim 7, it is characterised in that:The drier(11)Positioned at being protected from light chamber Body(10)With photoelectric sensor(12)Between in the cavity that is formed.
9. a kind of detection method according to claims 1-8, it is characterised in that:Include the following steps:
Step 1: in inlet channel(13)A ferrous sulfate column is connected, the filter of 10um is connected after column;
Step 2: in outlet passageway(14)Vacuum pump is connected, under the action of vacuum pump, gas to be detected is from inlet channel(13) Enter reaction chamber(4)In, and from outlet passageway(13)It is drawn to reaction chamber(4)Outside;
Step 3: the first feed pathway(2), the second feed pathway(3)Connect peristaltic pump, under the action of peristaltic pump, peroxidating The luminol reagent of hydrogen reagent and potassium hydroxide is respectively from the first feed pathway(2), the second feed pathway(3)Enter reaction chamber (4)In and be uniformly diffused into reaction bed under gravity(5)It goes up and completes to mix, the sulfur dioxide gas in gas to be detected Body and reaction bed(5)On mix reagent occur surface chemistry luminescence-producing reaction;Meanwhile liquid outlet channel(6)Be connected with peristaltic pump or Vacuum pump, under the action of peristaltic pump or vacuum pump, reaction bed(5)The reagent that lower end was reacted passes through liquid outlet channel(6)Extraction To reaction chamber(4)Outside;
Step 4: photoelectric sensor(12)The optical signal that hydrophilic membrane surfaces chemiluminescence reaction generates is detected, to export titanium dioxide The corresponding electric signal of sulphur concentration, electric signal are converted to sulfur dioxide concentration numerical value after computer calculation processing;
Step 5: after detection, reagent is changed into deionized water, lead to liquid 10 minutes or so to reaction bed(5)It is cleaned, so Stop leading to liquid afterwards;Dry gas is passed through to reaction bed(5)And reaction chamber(4)Inside carries out purging drying, and drying time is 5 points Clock.
CN201810201475.5A 2018-03-12 2018-03-12 A kind of sulfur dioxide detection device and its detection method Pending CN108507998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810201475.5A CN108507998A (en) 2018-03-12 2018-03-12 A kind of sulfur dioxide detection device and its detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810201475.5A CN108507998A (en) 2018-03-12 2018-03-12 A kind of sulfur dioxide detection device and its detection method

Publications (1)

Publication Number Publication Date
CN108507998A true CN108507998A (en) 2018-09-07

Family

ID=63377406

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810201475.5A Pending CN108507998A (en) 2018-03-12 2018-03-12 A kind of sulfur dioxide detection device and its detection method

Country Status (1)

Country Link
CN (1) CN108507998A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006876A (en) * 2019-04-24 2019-07-12 四川轻化工大学 A kind of device for testing carbon dioxide gas and detection method
CN111693514A (en) * 2020-05-07 2020-09-22 四川轻化工大学 Online detection device and method utilizing online liquid-gas conversion
CN111693516A (en) * 2020-05-07 2020-09-22 四川轻化工大学 Gas-liquid phase electrochemical luminescence detection device and detection method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110006876A (en) * 2019-04-24 2019-07-12 四川轻化工大学 A kind of device for testing carbon dioxide gas and detection method
CN110006876B (en) * 2019-04-24 2021-07-27 四川轻化工大学 Carbon dioxide gas detection device and detection method
CN111693514A (en) * 2020-05-07 2020-09-22 四川轻化工大学 Online detection device and method utilizing online liquid-gas conversion
CN111693516A (en) * 2020-05-07 2020-09-22 四川轻化工大学 Gas-liquid phase electrochemical luminescence detection device and detection method

Similar Documents

Publication Publication Date Title
CN108507998A (en) A kind of sulfur dioxide detection device and its detection method
CN103558212B (en) Nitrogen dioxide testing device and detection method
JPH01304346A (en) Detector and detecting method for fluorescence and scattering light
CN105784691B (en) Nitrogen dioxide device for fast detecting and detection method
CN105842234A (en) Self-calibration continuous and online nitrogen dioxide detection device and method
CN105738354B (en) Liquid phase chemiluminescence detecting and detection method
CN103389279A (en) Device and method for online detection of concentration of sulfides in water by methylene blue spectrophotometric method
CN103364385A (en) Device and method for on-line detection of sulfide concentrations in water sample by utilization of fluorescence spectrophotometry
CN105067596A (en) Ozone detection apparatus and detection method thereof
CN110160971A (en) A kind of water quality online analyzer photoelectric colorimetry measuring device and method
CN205607866U (en) From maring continuous on -line measuring device of formula nitrogen dioxide
CN204945050U (en) Ozone-detecting element
CN108535154A (en) A kind of detection device and method of smoke secondary pollutant
US6797237B2 (en) Oxidation decomposition type element analyzer
US3996005A (en) Detection and measurement of NO2 and O3
CN108037115B (en) Sulfur dioxide detection system and detection method
CN110220855A (en) A kind of chemical analysis system for total nitrogen
CN106645501A (en) Continuous automatic sampling and analyzing method and continuous automatic sampling and analyzing device for measuring atmospheric carbonate
CN206020157U (en) A kind of gas cleaning plant
CN211086070U (en) Sulfide analysis system
JPS58204343A (en) Measuring apparatus of hydrogen ion concentration
CN210037585U (en) Photoelectric colorimetric measuring device of water quality online analyzer
CN208283283U (en) The detection device of ozone content in air
SU1154590A1 (en) Dish for photometric measurements
JPH08129011A (en) Inorganic carbon measuring device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180907