CN113281280A - Real-time corrosion medium data monitoring device and using method thereof - Google Patents

Real-time corrosion medium data monitoring device and using method thereof Download PDF

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Publication number
CN113281280A
CN113281280A CN202110553774.7A CN202110553774A CN113281280A CN 113281280 A CN113281280 A CN 113281280A CN 202110553774 A CN202110553774 A CN 202110553774A CN 113281280 A CN113281280 A CN 113281280A
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bottle
reaction
chamber
liquid
cleaning
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夏晓健
林德源
蔡建宾
韩纪层
陈云翔
万芯瑗
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Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
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Electric Power Research Institute of State Grid Fujian Electric Power Co Ltd
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    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • 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
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

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Abstract

The invention relates to a corrosion medium data real-time monitoring device and a using method thereof, wherein the monitoring device comprises a control chamber, a reaction chamber, an analysis chamber, a conveyor belt driving chamber, a pump fixing chamber and a storage box chamber; a display module and a control module are arranged in the control room; a reaction module, a cleaning module and a sampling device are arranged in the reaction chamber; the reaction device comprises a reaction bottle and a collection bottle; a spectrophotometer is arranged in the analysis chamber; the driving module is arranged in the conveyor belt driving chamber and drives the conveyor belt to transmit, and the conveyor belt penetrates through the reaction chamber and the analysis chamber; a plurality of grooves are arranged on the conveyor belt at intervals, and the cuvette is clamped in the grooves; the sampling device can transfer liquid between the reaction bottle and the cuvette; the storage box chamber is internally provided with a plurality of reagent bottles and absorption bottles, different reagents are respectively stored in the reagent bottles, and absorption liquid is stored in the absorption bottles. The invention monitors the salt fog content of the atmosphere according to the absorbance, and realizes the full automation of periodic monitoring through the control module.

Description

Real-time corrosion medium data monitoring device and using method thereof
Technical Field
The invention relates to a corrosion medium data real-time monitoring device and a using method thereof, belonging to the technical field of atmospheric monitoring equipment.
Background
Salt spray refers to a dispersion system formed by salt-containing tiny droplets in the atmosphere, and the cause of the dispersion system is mainly that a large amount of foam and bubbles are generated due to the fact that sea water in the sea is severely disturbed, wind waves are broken, and sea waves flap the bank; when the bubbles are broken, tiny water drops can be generated, and most of the seawater drops fall under the action of gravity; part of the water is distributed on the sea surface in a state of keeping balance with vortex diffusion, rises into the air along with airflow, and is developed into a dispersion system through processes of cracking, evaporation, mixing and the like to form atmospheric salt nuclei.
The maximum in salt spray content of the air occurs over the ocean. The salt fog content in the air above the land is influenced by atmospheric conditions, the evaporation degree of seawater, wind direction and wind speed diffusion factors. Salt spray settles mainly in the coastal areas and near the coast. The air in coastal areas contains a large amount of chloride ions, and the chloride ions have great destructive effect on metal protective films, so that the corrosion of metal substances is accelerated, the original strength of equipment in service in the environment is destroyed, and serious consequences are brought to the safe operation of the equipment. In order to find a method for efficiently protecting equipment from corrosion, the salt fog content of the atmospheric air in the environment should be accurately mastered. However, the salt fog content of the atmosphere is not constant, and changes with weather changes (such as wind direction, wind speed, rainfall and the like), seasonal changes, offshore distance and other factors, so that the salt content detection becomes difficult.
The currently common detection method for the content of the atmospheric salt fog mainly comprises the following steps: the specific test processes of the wet candle method, the dry sheet method and the like can be seen in GB/T19292.3-2018, namely, the methods of corrosive atmosphere of metal and alloy have long data acquisition period, the general period is one month, the data is greatly influenced by wind speed, wind direction and the like in the environment, the repeatability is poor, the operation is complex, and the artificial influence factor is large, so that the reliability of the data is questioned. A method for monitoring the salt fog content of the atmosphere in real time by shortening the experimental period and ensuring stable and reliable test data is urgently needed.
Disclosure of Invention
In order to overcome the problems, the invention provides a corrosion medium data real-time monitoring device and a using method thereof.
The technical scheme of the invention is as follows:
the first technical scheme is as follows:
a corrosion medium data real-time monitoring device comprises a control chamber, a reaction chamber, an analysis chamber, a conveyor belt driving chamber, a pump fixing chamber and a storage box chamber; a display module and a control module are arranged in the control room; a reaction module, a cleaning module and a sampling device are arranged in the reaction chamber; the reaction device comprises a reaction bottle and a collection bottle; a spectrophotometer is arranged in the analysis chamber; a driving module is arranged in the conveyor belt driving chamber and drives a conveyor belt to transmit, and the conveyor belt penetrates through the reaction chamber and the analysis chamber; a plurality of grooves are arranged on the conveyor belt at intervals, and the cuvette is clamped in the grooves; the sampling device is capable of transferring liquid between the reaction vial and the cuvette; a plurality of reagent bottles and absorption bottles are arranged in the storage box chamber, different reagents are stored in the reagent bottles respectively, and absorption liquid is stored in the absorption bottles; the pump fixing chamber is provided with an air pump, a transfer pump and a cleaning pump; the air pump can pump the atmosphere into the collection bottle; the transfer pump is used for transferring liquid among the reaction module, the reagent bottle and the absorption bottle; the cleaning pump extracts the liquid of the cleaning module to clean the device.
Further, sampling device is in including the level setting slide rail in the reaction chamber, the slide rail slides and is provided with the sampling needle, the sampling needle can be followed vertical direction and gone up and down.
Further, a liquid level monitor is arranged at the upper part in the collecting bottle.
Further, the cleaning module comprises a first cleaning bottle, a second cleaning bottle and a third cleaning bottle; nitric acid is stored in the first cleaning bottle; ethanol is stored in the second cleaning bottle; pure water is stored in the third cleaning bottle.
Further, a ferric nitrate solution, nitric acid, tween-80 and a mercury thiocyanate-methanol mixed solution are respectively stored in the reagent bottle; a stirrer is arranged in each reagent bottle; the concentration of the ferric nitrate solution is 50 grams per liter; the concentration of the nitric acid is as follows: 1:2 of water; the concentration of the Tween-80 is 20 grams per liter; the concentration of the mixed liquid of the mercury thiocyanate and the methanol is 4 grams per liter.
Further, be provided with agitating unit in the bin chamber, agitating unit is used for right liquid in the reagent bottle stirs.
Further, a cuvette storage box is arranged in the conveyor belt driving chamber; shock pads are arranged at the bottoms of the air pump, the transfer pump and the cleaning pump.
The second technical scheme is as follows:
a use method of a corrosion medium data real-time monitoring device is used for detecting a corrosion medium, and comprises the following steps:
detecting the absorbance of the standard sample liquid with different concentrations by a spectrophotometer to obtain an absorbance-concentration standard curve of the mixed sample liquid;
through the transfer pump, certain volume of absorption liquid is extracted from the absorption bottle to the collection bottle, certain volume of atmosphere is extracted from the air pump to the collection bottle, and the atmosphere forms a sampling liquid N after being absorbed by the absorption liquid1；
A sampling sample liquid A with a certain volume is extracted from the collection bottle to the reaction bottle through the transfer pump, and a reagent with a certain volume is extracted from the reagent bottle through the transfer pumpThe mixture is put into the reaction bottle and stands in a shading way to form reaction sample liquid N1；
Extracting reaction sample liquid N from the reaction bottle through the sampling needle1To the cuvette, the cuvette is conveyed to the analysis chamber by a conveyor belt, and the reaction sample liquid N in the cuvette is tested by a spectrophotometer1Absorbance of (a);
according to the absorbance comparison of the reaction sample liquid and the absorbance-concentration standard curve, obtaining the reaction sample liquid N1Concentration of chloride ion N in1；
Repeatedly pumping the atmosphere into the collection bottle to obtain a sampling sample liquid N2～nAccording to the sample liquid N2～nPreparation of reaction sample liquid N2～nAnd the reaction sample liquid N is tested by a spectrophotometer2～nThe absorbance of the reaction solution is compared with the absorbance-concentration standard curve to obtain a reaction sample solution N2～nConcentration of chloride ion N in2～n；
Record chloride ion concentration N1～nEffective data in the step (1), wherein the effective data are data of which the chloride ion concentration is less than a saturated concentration value, and the atmospheric salt spray content is calculated according to the effective data;
and pumping the liquid in the first cleaning bottle, the second cleaning bottle and the third cleaning bottle through the cleaning pump to clean the device.
Further, when the air pump pumps the air for less than 30 minutes, the short-term test is performed, and when the air pump pumps the air for more than or equal to 30 minutes, the long-term test is performed; the absorption liquid is a mixed liquid of glycerol and distilled water, the concentration of the glycerol is 2% -10% in a short-term test, and the concentration of the glycerol is 10% -20% in a long-term test; the test wavelength range of the spectrophotometer is 200 nm-780 nm, the wavelength is 200 nm-380 nm in short-term test, and the wavelength is 380 nm-780 nm in long-term test.
The third technical scheme is as follows:
according to the corrosion medium data real-time monitoring device in the first technical scheme, the control module controls the detection device to periodically detect the atmosphere according to the detection method in the second technical scheme, records data and makes a chart of salt spray content changing along with time; the display module displays the current atmospheric salt spray content and a salt spray time-varying graph in a past period.
The invention has the following beneficial effects:
1. the monitoring device can actively monitor the corrosion medium data in the atmosphere in real time, and the sampling, reaction, detection and cleaning stages are completed by equipment independently without manual control.
2. The monitoring device can display the data of the corrosion medium in the current atmosphere and the change of the data of the corrosion medium in the past period.
Drawings
Fig. 1 is a schematic diagram of the principle of the present invention.
FIG. 2 is a schematic view of the reaction chamber of the present invention.
Fig. 3 is a schematic diagram of the pump holding chamber of the present invention.
The reference numbers in the figures denote:
1. a control room; 11. a display module; 12. a control module; 2. a reaction chamber; 21. a reaction module; 211. a reaction bottle; 212. Collecting a bottle; 22. a cleaning module; 221. a first cleaning bottle; 222. a second cleaning bottle; 223. a third wash bottle; 23. a sampling device; 231. a slide rail; 232. a sampling needle; 3. an analysis chamber; 4. a conveyor belt drive chamber; 41. a conveyor belt; 42. a groove; 43. a cuvette; 5. a pump fixing chamber; 51. an air pump; 52. a transfer pump; 53. cleaning the pump; 54. a shock pad; 6. a storage compartment.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1-3, a real-time monitoring device for corrosion medium data comprises a control chamber 1, a reaction chamber 2, an analysis chamber 3, a conveyor belt driving chamber 4, a pump fixing chamber 5 and a storage box chamber 6; a display module 11 and a control module 12 are arranged in the control room 1; a reaction module 21, a cleaning module 22 and a sampling device 23 are arranged in the reaction chamber 2; the reaction device 21 comprises a reaction bottle 211 and a collection bottle 212; a spectrophotometer is arranged in the analysis chamber 3; a driving module is arranged in the conveyor belt driving chamber 4, a conveyor belt 41 is driven to transmit, and the conveyor belt 41 penetrates through the reaction chamber 2 and the analysis chamber 3; a plurality of grooves 42 are arranged on the conveyor belt 41 at intervals, and the cuvette 43 is clamped in the grooves 42; the sampling device 23 is capable of transferring liquid between the reaction vial 211 and the cuvette 43; a plurality of reagent bottles and absorption bottles are arranged in the storage box chamber 6, different reagents are respectively stored in the reagent bottles, and absorption liquid is stored in the absorption bottles; the pump fixing chamber 5 is provided with an air pump 51, a transfer pump 52 and a cleaning pump 53; the air pump 51 can pump atmospheric air into the collection bottle 212; the transfer pump 52 is used for transferring liquid among the reaction module 21, the reagent bottle and the absorption bottle; the cleaning pump 53 pumps the liquid in the cleaning module 22 to clean the device.
In at least one embodiment, the sampling device 23 comprises a slide rail 231 horizontally disposed in the reaction chamber 2, the slide rail 231 is slidably disposed with a sampling needle 232, and the sampling needle 232 can be vertically lifted. The sampling device 23 samples the reaction vial 211 and transfers the sample to the cuvette 43.
In at least one embodiment, a liquid level monitor is disposed at an upper portion of the collection vial 212 to detect a liquid level within the collection vial 212 to prevent overflow.
In at least one embodiment, the wash module 22 includes a first wash bottle 221, a second wash bottle 222, and a third wash bottle 223; nitric acid is stored in the first cleaning bottle 221; ethanol is stored in the second cleaning bottle 222; pure water is stored in the third cleaning bottle 223.
In at least one embodiment, the reagent bottle is respectively stored with ferric nitrate solution, nitric acid, tween-80 and mercury thiocyanate-methanol mixed solution; the concentration of the ferric nitrate solution is 50 grams per liter; the concentration of the nitric acid is as follows: 1:2 of water; the concentration of the Tween-80 is 20 grams per liter; the concentration of the mixed liquid of the mercury thiocyanate and the methanol is 4 grams per liter.
In at least one embodiment, a stirring device is disposed within the storage compartment 6 for stirring the liquid in the reagent bottle to keep the reagent uniform.
In at least one embodiment, a cuvette storage compartment 44 is provided within the conveyor drive chamber 4; shock absorption pads 54 are arranged at the bottoms of the air pump 51, the transfer pump 52 and the cleaning pump 53.
A use method of a corrosion medium data real-time monitoring device is used for detecting a corrosion medium, and comprises the following steps:
detecting the absorbance of the standard sample liquid with different concentrations by a spectrophotometer to obtain an absorbance-concentration standard curve of the mixed sample liquid;
a certain volume of absorption liquid is pumped from the absorption bottle to the collection bottle 212 through the transfer pump 52, a certain volume of atmosphere is pumped into the collection bottle 212 through the air pump 51, and the atmosphere forms a sampling sample liquid N after being absorbed by the absorption liquid1；
A certain volume of sample liquid A is extracted from the collection bottle 212 to the reaction bottle 211 through the transfer pump 52, a certain volume of reagent is extracted from the reagent bottle to the reaction bottle 211 through the transfer pump 52, and the sample liquid N is formed by shading and standing1(ii) a Selecting one reagent according to actual conditions;
the reaction sample liquid N is extracted from the reaction flask 211 through the sampling needle 2321Into the cuvette 43, the cuvette 43 is transferred to the analysis chamber 3 by the transfer belt 41, and the reaction sample liquid N in the cuvette 43 is measured by a spectrophotometer1Absorbance of (a);
according to the absorbance comparison of the reaction sample liquid and the absorbance-concentration standard curve, obtaining the reaction sample liquid N1Concentration of chloride ion N in1；
Repeatedly pumping the atmosphere into the collection bottle 212 to obtain a sampling sample liquid N2～nAccording to the sample liquid N2～nPreparation of reaction sample liquid N2～nAnd the reaction sample liquid N is tested by a spectrophotometer2～nThe absorbance is compared with the absorbance-concentration standard curve to obtain reaction sample liquidN2～nConcentration of chloride ion N in2～n；
Record chloride ion concentration N1～nEffective data in the step (1), wherein the effective data are data of which the chloride ion concentration is less than a saturated concentration value, and the atmospheric salt spray content is calculated according to the effective data;
the cleaning pump 53 is used for pumping the liquid in the first cleaning bottle 221, the second cleaning bottle 222 and the third cleaning bottle 223 to clean the device.
On the basis of the corrosion medium data real-time monitoring device, the control module 12 controls the detection device to periodically detect the atmosphere according to the detection method, records data and makes a time-varying chart of the salt spray content; the display module 11 displays the current atmospheric salt spray content and the salt spray time-varying graph in the past period.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the specification and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. A corrosion medium data real-time monitoring device is characterized by comprising a control chamber (1), a reaction chamber (2), an analysis chamber (3), a conveyor belt driving chamber (4), a pump fixing chamber (5) and a storage box chamber (6); a display module (11) and a control module (12) are arranged in the control room (1); a reaction module (21), a cleaning module (22) and a sampling device (23) are arranged in the reaction chamber (2); the reaction device (21) comprises a reaction bottle (211) and a collection bottle (212); a spectrophotometer is arranged in the analysis chamber (3); a driving module is arranged in the conveyor belt driving chamber (4) and drives a conveyor belt (41) to transmit, and the conveyor belt (41) penetrates through the reaction chamber (2) and the analysis chamber (3); a plurality of grooves (42) are arranged on the conveyor belt (41) at intervals, and the cuvette (43) is clamped in the grooves (42); the sampling device (23) being capable of transferring liquid between the reaction vial (211) and the cuvette (43); a plurality of reagent bottles and absorption bottles are arranged in the storage box chamber (6), different reagents are stored in the reagent bottles respectively, and absorption liquid is stored in the absorption bottles; the pump fixing chamber (5) is provided with an air pump (51), a transfer pump (52) and a cleaning pump (53); the air pump (51) is capable of pumping atmospheric air into the collection bottle (212); the transfer pump (52) is used for transferring liquid among the reaction module (21), the reagent bottle and the absorption bottle; the cleaning pump (53) pumps the liquid of the cleaning module (22) to clean the device.
2. The corrosion medium data real-time monitoring device according to claim 1, wherein the sampling device (23) comprises a slide rail (231) horizontally arranged in the reaction chamber (2), the slide rail (231) is slidably provided with a sampling needle (232), and the sampling needle (232) can be vertically lifted.
3. The corrosion medium data real-time monitoring device according to claim 2, wherein a liquid level monitor (213) is arranged at the upper part in the collection bottle (212).
4. The corrosion medium data real-time monitoring device according to claim 3, wherein the cleaning module (22) comprises a first cleaning bottle (221), a second cleaning bottle (222) and a third cleaning bottle (223); nitric acid is stored in the first cleaning bottle (221); ethanol is stored in the second cleaning bottle (222); pure water is stored in the third cleaning bottle (223).
5. The corrosion medium data real-time monitoring device according to claim 4, wherein a ferric nitrate solution, nitric acid, tween-80 and a mercury thiocyanate-methanol mixed solution are respectively stored in the reagent bottle; a stirrer is arranged in each reagent bottle; the concentration of the ferric nitrate solution is 50 grams per liter; the concentration of the nitric acid is as follows: 1:2 of water; the concentration of the Tween-80 is 20 grams per liter; the concentration of the mixed liquid of the mercury thiocyanate and the methanol is 4 grams per liter.
6. The device for monitoring corrosion medium data in real time according to claim 5, wherein a stirring device is arranged in the storage box chamber (6), and the stirring device is used for stirring the liquid in the reagent bottle.
7. The device for monitoring the data of the corrosive medium in real time as claimed in claim 6, wherein a cuvette storage box is arranged in the conveyor belt driving chamber (4); shock absorption pads (54) are arranged at the bottoms of the air pump (51), the transfer pump (52) and the cleaning pump (53).
8. A method for using a real-time data monitoring device for corrosive media, which is used for detecting the corrosive media by using the real-time data monitoring device for corrosive media of claim 7, and is characterized by comprising the following steps:
detecting the absorbance of the standard sample liquid with different concentrations by a spectrophotometer to obtain an absorbance-concentration standard curve of the mixed sample liquid;
a certain volume of absorption liquid is pumped from the absorption bottle to the collection bottle (212) through the transfer pump (52), a certain volume of atmosphere is pumped to the collection bottle (212) through the air pump (51), and the atmosphere forms a sampling liquid N after being absorbed by the absorption liquid1；
A certain volume of sampling sample liquid A is extracted from the collection bottle (212) to the reaction bottle (211) through the transfer pump (52), a certain volume of reagent is extracted from the reagent bottle to the reaction bottle (211) through the transfer pump (52), and the reaction sample liquid N is formed through shading and standing1；
Extracting a reaction sample liquid N from the reaction flask (211) through the sampling needle (232)1Into the cuvette (43), transferring the cuvette (43) into the analysis chamber (3) by means of a transfer belt (41), and testing the reaction sample liquid N in the cuvette (43) by means of a spectrophotometer1Absorbance of (a);
according to the absorbance comparison of the reaction sample liquid and the absorbance-concentration standard curve, obtaining the reaction sample liquid N1Concentration of chloride ion N in1；
Repeatedly pumping the atmosphere into the collection bottle (212) to obtain a sampling sample liquidN2～nAccording to the sample liquid N2～nPreparation of reaction sample liquid N2～nAnd the reaction sample liquid N is tested by a spectrophotometer2～nThe absorbance of the reaction solution is compared with the absorbance-concentration standard curve to obtain a reaction sample solution N2～nConcentration of chloride ion N in2～n；
Record chloride ion concentration N1～nEffective data in the step (1), wherein the effective data are data of which the chloride ion concentration is less than a saturated concentration value, and the atmospheric salt spray content is calculated according to the effective data;
and pumping the liquid in the first cleaning bottle (221), the second cleaning bottle (222) and the third cleaning bottle (223) through the cleaning pump (53) to clean the device.
9. The use method of the corrosion medium data real-time monitoring device is characterized in that the short-term test is performed when the air pump (51) pumps the atmosphere for less than 30 minutes, and the long-term test is performed when the air pump (51) pumps the atmosphere for more than or equal to 30 minutes; the absorption liquid is a mixed liquid of glycerol and distilled water, the concentration of the glycerol is 2% -10% in a short-term test, and the concentration of the glycerol is 10% -20% in a long-term test; the test wavelength range of the spectrophotometer is 200 nm-780 nm, the wavelength is 200 nm-380 nm in short-term test, and the wavelength is 380 nm-780 nm in long-term test.
10. The real-time data monitoring device for corrosive media according to claim 7, characterized in that the control module (12) controls the detection device to periodically detect the atmosphere according to the method of claim 8, record data and make a salt fog content time-varying graph; the display module (11) displays a current atmospheric salt spray content and a salt spray time-varying graph in a past period of time.
CN202110553774.7A 2021-05-20 2021-05-20 Real-time corrosion medium data monitoring device and using method thereof Pending CN113281280A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109632673A (en) * 2019-01-24 2019-04-16 贵州恒安工程试验检测有限公司 A kind of detection method of indoor air formaldehyde content
CN110044830A (en) * 2019-04-09 2019-07-23 中国电器科学研究院股份有限公司 A kind of device and detection method for on-line checking atmosphere salt fog content

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109632673A (en) * 2019-01-24 2019-04-16 贵州恒安工程试验检测有限公司 A kind of detection method of indoor air formaldehyde content
CN110044830A (en) * 2019-04-09 2019-07-23 中国电器科学研究院股份有限公司 A kind of device and detection method for on-line checking atmosphere salt fog content

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