CN100549692C - Standard gaseous formaldehyde dynamic contamination device - Google Patents
Standard gaseous formaldehyde dynamic contamination device Download PDFInfo
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- CN100549692C CN100549692C CNB2006100197509A CN200610019750A CN100549692C CN 100549692 C CN100549692 C CN 100549692C CN B2006100197509 A CNB2006100197509 A CN B2006100197509A CN 200610019750 A CN200610019750 A CN 200610019750A CN 100549692 C CN100549692 C CN 100549692C
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Abstract
A kind of standard gaseous formaldehyde dynamic contamination device.Belong to calibrating gas dynamic contamination technical field.This device is made up of environmental chamber (I), formaldehyde analyser (II) and 8.4 liters of aeration type glass contamination cylinders (III).Its principal feature is that the applied environment climate compartment is as source generator, the standard formalin that adopts Sigma company to produce, by the environmental chamber moisture control system, produce the standard gaseous formaldehyde of experiment desired concn, biological sample is carried out the standard gaseous formaldehyde contamination, and gaseous formaldehyde is carried out Real-time and Dynamic precisely detect, to guarantee gaseous formaldehyde state and steady concentration, having overcome the traditional static contaminating mode and be difficult for quantitative, unsettled shortcoming, is a kind of reliable gaseous formaldehyde device.
Description
Technical field
The present invention relates to a kind of standard gaseous dynamic contamination experimental provision.
Background technology
(formaldehyde FA) is a kind of common finishing type chemical indoor air pollutants to formaldehyde.Colourless, have and smell flavor, irritative gas that oxidizing force is strong strongly, highly volatile, soluble in water, its aqueous solution of 30%～40% is called formalin.The room air formaldehyde pollution mainly contains following feature: (1) pollution range is wide; (2) the pollution time is long; (3) pollution concentration height; (4) bio-toxicity is big; (5) molecule mechanism of toxic action is unclear.In recent years, pollute with the health Study on Effect increasingly extensive deep about room air formaldehyde.The foundation of standard gaseous formaldehyde dynamic contamination device is the important means of research gaseous formaldehyde toxic action.The tradition contamination device adopts the static contamination of formaldehyde, and environmental index is wayward and concentration of formaldehyde is unstable, the difficult detection.Other has the formaldehyde of employing steam to carry out the contamination of liquid dipping bath, and high humidity makes formaldehyde promptly be absorbed at nasal cavity, is difficult for entering other histoorgans of lung and health, can not truly reflect the bio-toxicity effect of formaldehyde.
Summary of the invention
The objective of the invention is to the applied environment climate compartment as source generator,, produce the standard gaseous formaldehyde of experiment desired concn by the standard formalin that the Sigma company of loading variable concentrations produces.A kind of standard gaseous formaldehyde dynamic contamination device is provided.
Test principle of the present invention: for formaldehyde is carried out Biological Effects as chemicals model (chemical model), other pollutant effects during the simulation type that eliminating adopts the wood-base fibre and particle panel material material to carry out is contaminated, the standard formalin that adopts Sigma company to produce, by the environmental chamber moisture control system, produce the standard gaseous formaldehyde of experiment desired concn, set up standard gaseous formaldehyde dynamic contamination device.
Technical scheme of the present invention is:
A kind of standard gaseous formaldehyde dynamic contamination device (referring to accompanying drawing 1), by environmental chamber I, formaldehyde analyser II and aeration type glass contamination cylinder III form, environmental chamber is discharged gas and is connected in the formaldehyde analyser by conduit, carry out the detection of concentration of formaldehyde, the outlet pipe of the inlet tube JA(junction ambient) climate compartment of aeration type glass contamination cylinder, the gas outlet pipe is connected to outdoor, place biomaterial to be contaminated in the glass contamination cylinder, the sealing contamination, in the bubble bottle normal concentration formalin is housed in the environmental chamber, environmental chamber is by parameter auto-testing of setting and automatic climate comfort, air humidity, airshed, the gaseous formaldehyde of steady and continuous ground output experiment desired concn is used for the standard dynamic contamination.
Environmental chamber adopts WH-2 type minienvironment climate compartment (referring to accompanying drawing 2), is small intelligent type environmental chamber, and interior cabin volume is 60 liters.This instrument adopts to be measured and automatic adjustment technology automatically, comprising: the measurement of temperature, air humidity, airshed and adjusting automatically.The cabin standard test condition is 1.0 liters/minute of 23 ± 0.5 ℃ of relative humidity of temperature, 45 ± 5% air exchange rates.
The used clean air generation systems of the present invention is an air compressor, and operation in per 20 minutes once.
The used sheet material of the present invention is the wood-base fibre and particle panel material material, is loaded in the interior cabin of environmental chamber, is used for the simulation type gaseous formaldehyde.
The mass concentration that the used formalin of the present invention adopts Sigma company to produce is 10% formalin solution stoste, be mixed with variable concentrations formalin, place environmental chamber bubble bottle, humidity parameter by the environmental chamber setting, make it the gaseous formaldehyde of steady and continuous ground output experiment desired concn, be used for the standard dynamic contamination.
The used concentration of formaldehyde detecting instrument of the present invention is the U.S.'s original-pack 4160-2 type formaldehyde analyser, is used for the monitoring of gaseous formaldehyde concentration.
The used glass contamination cylinder of the present invention adopts vacuum clear glass device, and 8.4 liters of volumes can hold 6 mouse and carry out gaseous formaldehyde.Also can place the other biological material, as plant, cell etc. are contaminated.The contamination cylinder is made up of cylinder body and cylinder cap.Cover and be connected to import and outlet copper pipe.The plastic conduit of giving vent to anger of import copper pipe JA(junction ambient) climate compartment, the waste gas that the outlet copper pipe is discharged is connected to outdoor by plastic conduit.The sealing of glass contamination cylinder is used during contamination.
Technical characterstic of the present invention is:
Study as typical chemicals model (chenmical model) with formaldehyde, adopt calibrating gas contamination scheme, the gaseous formaldehyde that the standard formalin of being produced by Sigma company produces, can study every physiopathology effect of formaldehyde single, exactly, get rid of the interference of other pollutants that may exist in the simulation type contamination scheme; The characteristics such as contamination that have the standard environment condition, dynamically gaseous state is contaminated, poisoning dosage is accurately constant, can be used for other pollutants.
Standard gaseous formaldehyde dynamic contamination device of the present invention is complete contamination equipment, with operating guidance.Monitoring device experimental technique of the present invention is simple and easy to do, and the result is objective, accurate, stability, favorable repeatability.The deficiency of classic method can be effectively overcome, the bio-toxicity effect of formaldehyde can be truly reflected.It is a kind of reliable contamination method.
Description of drawings:
Fig. 1. the standard gaseous formaldehyde dynamic contamination device pictorial diagram
Fig. 2 .WH-2 small intelligent environmental chamber structural representation
Identify among the figure: I-environmental chamber, II-formaldehyde analyser, III-aeration type glass contamination cylinder, 1-air compressor machine, the 2-dehumidifier, 3-shunts spinner-type flowmeter, 4-discolour silica gel pipe, 5-oxidant pipe, 6-active carbon filtration pipe, the 7-humidifier, 8-birotor flow device, 9-bubble bottle, 10-dish-type copper pipe, cabin in the 11-constant incubator, 12-, the 13-fan, 14-electronics temperature and humidity measurement instrument, 15-rotor flow device, the 16-shunting, the 17-sampling.
Embodiment:
Embodiment 1
Standard gaseous formaldehyde dynamic contamination device is as shown in Figure 1: be made up of environmental chamber I, formaldehyde analyser II and 8.4 liters of aeration type glass contamination cylinder III.1.5 two-way air-conditionings of Gree board are installed in the laboratory, and indoor temperature tentatively is controlled at 20～30 ℃ scope.Environmental chamber is a WH-2 type minienvironment climate compartment, and its inner structure as shown in Figure 2.Air compressor machine 1, dehumidifier 2, shunting spinner-type flowmeter 3, discolour silica gel pipe 4, oxidant pipe 5 and activated carbon tube 6 are formed the clean air generation systems.The air of confession clean air generation systems derives from outdoor, is connected in the air compressor machine that does not have oil by conduit, adopts " filtering pressure reducing valve " tentatively to dehumidify then.By shunting spinner-type flowmeter 3 control air pressure.Two drying tubes (interior dress discolour silica gel) are dehumidifying further, makes the moisture of air feed be reduced to designing requirement; Two catalytic oxidant pipes 5 (interior dress oxygenant particle) are with the micro-content organism oxygenolysis in the air feed; Two active carbon filtration pipes 6 (interior dress activated carbon granule) further purify air feed, when satisfying experiment to the requirement of air purity.Regularly silica gel is dried and oxygenant and activated charcoal are put into muffle furnace (350 ℃) activation in 2 hours.Humidifier 7, birotor flow device 8, bubble bottle 9 and dish-type copper pipe 10 are formed humidification and humidity control system.Humidity is controlled at 45 ± 5%.Dry air feed disperses air-flow to absorb moisture by water body by the sieve plate in the bubble bottle, plays the effect of humidification.According to this principle, the mass concentration that adopts Sigma company to produce is 10% formalin (formaldehyde) solution stoste, be mixed with 0.25% formalin, place the bubble bottle, the climate compartment parameter is arranged on 23 ℃ of temperature, humidity 45%, the operation of 1 liter/minute of flow is more than 3 hours, can stablize output 1 milligram/meter
3The formaldehyde gas of concentration.The cabin is got rid of gas and is connected in 4160-2 type formaldehyde analyser by conduit, carries out the detection of concentration of formaldehyde.Place biomaterial to be contaminated in the glass contamination cylinder, the sealing contamination.The plastic conduit of giving vent to anger of import copper pipe JA(junction ambient) climate compartment, the waste gas that the outlet copper pipe is discharged is connected to outdoor by plastic conduit.
Experimental procedure is:
Step 1: clean the environmental chamber inwall
With cabin in the washed with de-ionized water environmental chamber stainless steel, to get rid of the influence of other pollutions.
Step 2: the configuration of formaldehyde generation liquid
The mass concentration that adopts Sigma company to produce is 10% formalin solution stoste, is mixed with mass concentration 0.25% formalin, places the bubble bottle, the climate compartment parameter is arranged on 23 ℃ of temperature, humidity 45%, the operation of 1 liter/minute of flow is more than 3 hours, can stablize output 1 milligram/meter
3The formaldehyde gas of concentration.Obtain other concentration gaseous formaldehydes as need, dispose corresponding liquid formalin, place the bubble bottle to get final product more than 3 hours by the above-mentioned parameter operation climate compartment that is provided with by above-mentioned liquid state/gaseous formaldehyde concentration ratio.
Step 3: gaseous formaldehyde concentration monitoring
Adopt 4160 type gaseous formaldehyde analysers, regularly monitor the gaseous formaldehyde concentration of environmental chamber output (as per 8 hours) during the biological sample contamination, and actual formaldehyde mass concentration gets final product with interior at predetermined concentration ± 10%.
Step 4: the gaseous formaldehyde dynamic contamination of biological sample is handled
Treat environmental chamber provide stablize gaseous formaldehyde after, just can carry out the contamination of biological sample and handle.Laboratory sample comprises that living animal (as the rat mouse), plant, cell sample are (as contaminating under 37 ℃ of conditions of need, environmental chamber is arranged at 37 ℃, and adjust liquid concentration of formaldehyde, cell places the interior cabin of climate compartment to contaminate and gets final product) and be used for control exposure human experimentation (the formaldehyde gas feeding exposure goggles of climate compartment output is carried out eye exposure processing).
Claims (6)
1, a kind of standard gaseous formaldehyde dynamic contamination device, it is characterized in that, this device is by environmental chamber (I), formaldehyde analyser (II) and aeration type glass contamination cylinder (III) are formed, environmental chamber is discharged gas and is connected in the formaldehyde analyser by conduit, carry out the detection of concentration of formaldehyde, the outlet pipe of the inlet tube JA(junction ambient) climate compartment of aeration type glass contamination cylinder, the gas outlet pipe is connected to outdoor, place biomaterial to be contaminated in the glass contamination cylinder, the sealing contamination, in the bubble bottle normal concentration formalin is housed in the environmental chamber, environmental chamber is by parameter auto-testing of setting and automatic climate comfort, air humidity, airshed, the gaseous formaldehyde of steady and continuous ground output experiment desired concn, be used for the standard dynamic contamination, wherein, the described normal concentration formalin mass concentration that adopts Sigma company to produce is the formalin of the variable concentrations that is mixed with of 10% formalin stoste.
2, standard gaseous formaldehyde dynamic contamination device as claimed in claim 1, it is characterized in that, described environmental chamber (I) adopts WH-2 type minienvironment climate compartment, interior cabin volume is 60 liters, and the cabin standard test condition is 1.0 liters/minute of 23 ± 0.5 ℃ of relative humidity of temperature, 45 ± 5% air exchange rates.
3, standard gaseous formaldehyde dynamic contamination device as claimed in claim 1 is characterized in that, used formaldehyde analyser is the U.S.'s original-pack 4160-2 type formaldehyde analyser.
4, standard gaseous formaldehyde dynamic contamination device as claimed in claim 1 is characterized in that, described glass contamination cylinder adopts vacuum clear glass device, 8.4 liters of volumes.
5, standard gaseous formaldehyde dynamic contamination device as claimed in claim 1 is characterized in that, the used clean air generation systems of described environmental chamber is an oil-free air compressor, and operation in per 20 minutes once.
6, standard gaseous formaldehyde dynamic contamination device as claimed in claim 1 is characterized in that, in the cabin, loads the wood-base fibre and particle panel material material in the described environmental chamber, is used for the simulation type gaseous formaldehyde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100197509A CN100549692C (en) | 2006-07-28 | 2006-07-28 | Standard gaseous formaldehyde dynamic contamination device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100197509A CN100549692C (en) | 2006-07-28 | 2006-07-28 | Standard gaseous formaldehyde dynamic contamination device |
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| CN1904611A CN1904611A (en) | 2007-01-31 |
| CN100549692C true CN100549692C (en) | 2009-10-14 |
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| CNB2006100197509A Expired - Fee Related CN100549692C (en) | 2006-07-28 | 2006-07-28 | Standard gaseous formaldehyde dynamic contamination device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975749A (en) * | 2010-10-22 | 2011-02-16 | 清华大学 | Solid-film type formaldehyde standard distribution sample for testing formaldehyde accuracy in detection environmental chamber |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024951A (en) * | 2017-05-19 | 2017-08-08 | 中国矿业大学 | A kind of experiment on mice device and its experimental method for simulating metro environment |
| CN107703256A (en) * | 2017-08-10 | 2018-02-16 | 佛山地环科技检测有限公司 | A kind of dynamic fumigation system and application for being used to measure plant purification formaldehyde ability |
-
2006
- 2006-07-28 CN CNB2006100197509A patent/CN100549692C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 体内和体外实验的动态气体灌流染毒装置. 李睿，杨旭，陈茂林，刘宏亮，王光学，严彦，吴江，何胡军，鲁志松，童志前，乔琰.中国卫生工程学，第2卷第1期. 2003 |
| 体内和体外实验的动态气体灌流染毒装置. 李睿，杨旭，陈茂林，刘宏亮，王光学，严彦，吴江，何胡军，鲁志松，童志前，乔琰.中国卫生工程学，第2卷第1期. 2003 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975749A (en) * | 2010-10-22 | 2011-02-16 | 清华大学 | Solid-film type formaldehyde standard distribution sample for testing formaldehyde accuracy in detection environmental chamber |
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| CN1904611A (en) | 2007-01-31 |
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