CN102590199A - Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method - Google Patents
Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method Download PDFInfo
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- CN102590199A CN102590199A CN2012100263120A CN201210026312A CN102590199A CN 102590199 A CN102590199 A CN 102590199A CN 2012100263120 A CN2012100263120 A CN 2012100263120A CN 201210026312 A CN201210026312 A CN 201210026312A CN 102590199 A CN102590199 A CN 102590199A
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Abstract
The invention discloses a box for rapidly determining formaldehyde in indoor air, and a passive absorption manufacturing method, and belongs to the field of detection instruments. The invention aims to provide the box for rapidly determining the formaldehyde in the indoor air, and the passive absorption manufacturing method; and by the box, the formaldehyde in the indoor air is rapidly determined according to the principle that gas molecules are permeated and absorbed after being dispersed. The method comprises the following steps of: placing sodium metabisulfite in a beaker, adding purified water, stirring and dissolving, then adding glycerol, adding purified water, stirring, and completely dissolving to obtain a formaldehyde absorbent; injecting the formaldehyde absorbent into the bottom of a plastic formaldehyde absorption box by using a liquid-moving machine, placing the plastic formaldehyde absorption box in a drying oven at constant temperature of 100 DEG C, taking out after 13 minutes, forming a film with the thickness of 1 to 2mu m by using the formaldehyde absorbent, covering an upper cover of the plastic formaldehyde absorption box, and preserving at room temperature; placing the plastic absorption box at any horizontal position in a room to be detected, opening the plastic sealed upper cover, injecting an aqueous solution, slightly stirring for 5 seconds to ensure that the absorbent film in the formaldehyde absorption box is dissolved, standing for 30 minutes, adding a color-developing agent, stirring for 3 seconds, absorbing absorption liquid into a color comparison tube, holding the liquid part of the color comparison tube by using a hand for 5 minutes, comparing the color of the absorption liquid and the color of a standard color separation guide, and reading the content of formaldehyde in indoor air. The formaldehyde absorbent is not needed to be crushed, so the manufacturing process is simple.
Description
Technical field
The invention belongs to the detecting instrument field.
Background technology
The formaldehyde in indoor air existing at home and abroad large-tonnage product listing of box of testing oneself; Like 3M company, Mitsubishi and du pont company; The domestic product that is used for Liquid Absorption air formaldehyde is like Changchun Jida Cyqnet Apparatus Co., Ltd, ring company limited of Beijing section etc.But the detection method of these products is with the solid reagent and auxiliary reagent mixing, the weighing that absorb formaldehyde, is sub-packed in the absorption cell; Be positioned in the room to be measured after adding the liquid solution dissolving during use; After treating that passive type absorbs certain hour; Add in developer and the absorption liquid formolite reaction colour developing again, chromophoric solution and standard formaldehyde color scale card are read the content of formaldehyde in indoor air after relatively.They the manufacture craft flow process be generally: with formaldehyde absorption reagent and auxiliary reagent (pressed powder) pulverizing in proportion, mixing, balance weighing packing, pour absorption cell inner cap upper box cover into and preserve.The pulverizing of formaldehyde absorption reagent and auxiliary reagent, mixing need the equipment of specialty, so the trouble of making.So because it is inevitable to adopt the plant equipment mixing to mix non-uniform phenomenon.Can cause the detectable consistance poor like this, make testing result deviation occur.Owing to the prior art reason, need add auxiliary reagent during the balance weighing packing, make complex manufacturing technologyization.And, add auxiliary reagent and can produce salt effect, cause the solution PARA FORMALDEHYDE PRILLS(91,95) to be absorbed with influence, make absorption and reaction velocity slack-off, prolonged detection time.
Summary of the invention
The purpose of this invention is to provide a kind of formaldehyde in indoor air speed survey box and passive type absorption method for making of indoor formaldehyde being carried out fast measuring by gas molecule diffusion back osmotic absorption principle.
The present invention at first places beaker with Sodium Metabisulfite, adds glycerine again after the adding pure water stirring and dissolving, and then adds pure water, stirs dissolving fully, promptly gets the formaldehyde absorbing agent; Get formaldehyde absorbent solution injected plastic formaldehyde absorption cell bottom with pipettor; Place it in then in the baking oven of 100 ℃ of constant temperature, take out after 13 minutes, make film that the formaldehyde absorbing agent becomes thick 1～2um at the bottom of absorption cell; Cover plastics formaldehyde absorption cell loam cake, preserve at ambient temperature; The plastics absorption cell is placed indoor room to be detected horizontal level arbitrarily, open the plastic seal loam cake, inject the WS; Stirred for 5 seconds gently, make formaldehyde absorption cell inner absorbent Film Fractionation, static 30 minutes; Add developer then, stirred for 3 seconds, absorption liquid is sucked in the color comparison tube; Grasped color comparison tube solution position 5 minutes, then through reading the content of formaldehyde in indoor air after relatively with the standard color scale card.
Advantage of the present invention is:
1, need not pulverize the formaldehyde absorbing agent, make the making flow process simple.
2, do not need mixing formaldehyde absorbing agent and auxiliary reagent, avoided owing to mix the inhomogeneous deviation that causes testing result.
3, do not need auxiliary reagent, directly use the pipettor packing.Not only consumption is few, and has solved the pollution problem that the powder volatilization causes.
4, owing to do not have auxiliary reagent in the formaldehyde absorbing agent, the absorbing agent relative concentration is low, has reduced salt effect to absorbing the influence of formaldehyde, makes absorption liquid absorb airborne formaldehyde quickly, has reduced soak time, has improved on-the-spot detection speed.
5, at high temperature the formaldehyde absorbing agent in absorption cell bottom firm film forming, prevented to cause the formaldehyde absorbent powder to lose phenomenon because of vibration and collision.
Embodiment
The present invention at first places beaker with Sodium Metabisulfite, adds glycerine again after the adding pure water stirring and dissolving, and then adds pure water, stirs dissolving fully, promptly gets the formaldehyde absorbing agent; Get formaldehyde absorbent solution injected plastic formaldehyde absorption cell bottom with pipettor; Place it in then in the baking oven of 100 ℃ of constant temperature, take out after 13 minutes, make film that the formaldehyde absorbing agent becomes thick 1～2um at the bottom of absorption cell; Cover plastics formaldehyde absorption cell loam cake, preserve at ambient temperature; The plastics absorption cell is placed indoor room to be detected horizontal level arbitrarily, open the plastic seal loam cake, inject the WS; Stirred for 5 seconds gently, make formaldehyde absorption cell inner absorbent Film Fractionation, static 30 minutes; Add developer then, stirred for 3 seconds, absorption liquid is sucked in the color comparison tube; Grasped color comparison tube solution position 5 minutes, then through reading the content of formaldehyde in indoor air after relatively with the standard color scale card.
Instance:
At first, accurately take by weighing Sodium Metabisulfite (Na2S2O5) 1.30 with a day chessboard and restrain in 100 ml beakers, add 20 milliliters of pure water; With after the stirring rod stirring and dissolving, again add 20.0 the gram glycerine; And then add 80 milliliters of pure water, and stirring dissolving fully, this solution is as formaldehyde absorbent solution.Get 1.50ml formaldehyde absorbent solution injected plastic formaldehyde absorption cell bottom with pipettor; Place it in then in the baking oven of 100 ℃ of constant temperature; Take out after 13 minutes; Make formaldehyde absorbing agent film forming (thick 1-2um) at the bottom of absorption cell, cover plastics formaldehyde absorption cell loam cake, preservation gets final product at ambient temperature.
At first the plastics absorption cell is placed indoor room to be detected horizontal level arbitrarily during use, open the plastic seal loam cake, inject the 1.50ml WS; Stirred for 5 seconds gently, make formaldehyde absorption cell inner absorbent Film Fractionation, static 30 minutes; Add developer then, stirred for 3 seconds, absorption liquid is sucked in the color comparison tube; Grasped color comparison tube solution position 5 minutes, then through reading the content of formaldehyde in indoor air after relatively with the standard color scale card.
Manufacture craft flow process of the present invention is the weighing of formaldehyde absorption reagent, dissolving, packing, oven dry, film forming, encapsulation.Entire making process is very simple.At first; Weigh in the balance get a certain amount of formaldehyde absorption reagent put into beaker be dissolved in water the back proportioning become debita spissitudo; Therefrom draw in the certain quantity solution injected plastic absorption cell with pipettor then; Put into the plastics absorption cell that injects solution that baking oven dry at a certain temperature, film forming again, at last the plastics absorption cell after the film forming is taken out, cover the preservation of plastic seal loam cake.Whole making flow process is accomplished.
In this invention; After making formaldehyde absorbing agent film forming, firmly be adsorbed in plastics absorption cell bottom; Make plastics form rough surface with the method for etching plasma processing plastics absorption cell inner bottom part; Firm attachment was at coarse bottom interior surface after the oven dry of formaldehyde absorbent solution formed film, even vibration and collision plastics absorption cell, the formaldehyde absorbing agent film of formation can not come off yet.
Absorbing sampling at the formaldehyde in indoor air passive type is a kind of analytical approach of setting up by gas molecule diffusion back osmotic absorption principle.Compare with active absorption process, the advantage that passive type absorbs is to need not power supply, sampling pump, flowmeter and operating personnel.Can accomplish sample collecting easily, and easy to carry.The evaluation with public place indoor air quality of testing oneself of formaldehyde in indoor air when being applicable to decoration design for residence, and the indoor air inspection of quality examination during completion of works.
Below survey box for room air formaldehyde speed of the present invention and detect the control experiment result with the 6140 methylene oxide detecting instruments scene that American I nterscan company produces: detection site is three indoor seal cavities of different about 25 ㎡ rice
Proved feasibility of the present invention by the contrast experiment.
Claims (1)
1. a formaldehyde in indoor air speed is surveyed box and passive type absorption method for making; It is characterized in that: Sodium Metabisulfite is placed beaker, add glycerine again after the adding pure water stirring and dissolving, and then add pure water; Stir dissolving fully, promptly get the formaldehyde absorbing agent; Get formaldehyde absorbent solution injected plastic formaldehyde absorption cell bottom with pipettor; Place it in then in the baking oven of 100 ℃ of constant temperature, take out after 13 minutes, make film that the formaldehyde absorbing agent becomes thick 1～2um at the bottom of absorption cell; Cover plastics formaldehyde absorption cell loam cake, preserve at ambient temperature; The plastics absorption cell is placed indoor room to be detected horizontal level arbitrarily, open the plastic seal loam cake, inject the WS; Stirred for 5 seconds gently, make formaldehyde absorption cell inner absorbent Film Fractionation, static 30 minutes; Add developer then, stirred for 3 seconds, absorption liquid is sucked in the color comparison tube; Grasped color comparison tube solution position 5 minutes, then through reading the content of formaldehyde in indoor air after relatively with the standard color scale card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100263120A CN102590199A (en) | 2012-02-07 | 2012-02-07 | Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100263120A CN102590199A (en) | 2012-02-07 | 2012-02-07 | Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method |
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| CN102590199A true CN102590199A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100263120A Pending CN102590199A (en) | 2012-02-07 | 2012-02-07 | Box for rapidly determining formaldehyde in indoor air, and passive absorption manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352950A (en) * | 2015-10-24 | 2016-02-24 | 佛山市奥朗科技有限公司 | Detection medicament and method for rapid detection of formaldehyde content in air |
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| WO1990000737A1 (en) * | 1988-07-08 | 1990-01-25 | Becker Wilhelm Ab | A method and device for measuring formaldehyde emission from surfaces |
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| CN1589952A (en) * | 2003-08-26 | 2005-03-09 | 上海赛艾生物科技有限公司 | Visible formaldehyde gas eliminator and formaldehyde detecting bead and their preparation method |
| CN1661360A (en) * | 2004-02-27 | 2005-08-31 | 上海塞艾生物科技有限公司 | One-off simple rapid test kit for color matching formaldehyde and preparation method |
| CN1987434A (en) * | 2005-12-23 | 2007-06-27 | 哈尔滨市产品质量监督检验所 | Quick detecting technology for no public harm agricultural product market entrance |
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2012
- 2012-02-07 CN CN2012100263120A patent/CN102590199A/en active Pending
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| WO1990000737A1 (en) * | 1988-07-08 | 1990-01-25 | Becker Wilhelm Ab | A method and device for measuring formaldehyde emission from surfaces |
| JP2003294593A (en) * | 2002-04-04 | 2003-10-15 | Japan Science & Technology Corp | Gas detection method and gas detection device |
| CN1589952A (en) * | 2003-08-26 | 2005-03-09 | 上海赛艾生物科技有限公司 | Visible formaldehyde gas eliminator and formaldehyde detecting bead and their preparation method |
| CN1492223A (en) * | 2003-09-29 | 2004-04-28 | 中国疾病预防控制中心环境与健康相关 | Solid phase adsorption air pollutant sampler and its producing method |
| CN1661360A (en) * | 2004-02-27 | 2005-08-31 | 上海塞艾生物科技有限公司 | One-off simple rapid test kit for color matching formaldehyde and preparation method |
| CN1987434A (en) * | 2005-12-23 | 2007-06-27 | 哈尔滨市产品质量监督检验所 | Quick detecting technology for no public harm agricultural product market entrance |
| CN101086479A (en) * | 2006-06-06 | 2007-12-12 | 张佃志 | Formaldehyde detection reagent kit and its preparation method |
| CN101535798A (en) * | 2006-09-27 | 2009-09-16 | 独立行政法人产业技术综合研究所 | Formaldehyde detecting material, formaldehyde detector, formaldehyde detecting method and formaldehyde detecting reagent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352950A (en) * | 2015-10-24 | 2016-02-24 | 佛山市奥朗科技有限公司 | Detection medicament and method for rapid detection of formaldehyde content in air |
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Application publication date: 20120718 |