CN204101464U - A kind of quick detection bag of formaldehyde - Google Patents
A kind of quick detection bag of formaldehyde Download PDFInfo
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- CN204101464U CN204101464U CN201420550141.6U CN201420550141U CN204101464U CN 204101464 U CN204101464 U CN 204101464U CN 201420550141 U CN201420550141 U CN 201420550141U CN 204101464 U CN204101464 U CN 204101464U
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- formaldehyde
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model relates to a kind of quick detection bag of formaldehyde, comprises air-tight bottle, wrapper, is provided with and measures pipe, absorption of sample reaction box and colorimetric card in described wrapper; Described mensuration pipe comprises a transparent cylindricality tubular container, its top overcoat plug, and interior interval arranges two-layer sieve plate, between sieve plate, load developer, and the inside of cylindricality tubular container is also provided with piston, and piston and pipe bolt connect firmly; Described absorption of sample reaction box is made up of box body and lid, is inside provided with phenol reagent; Described colorimetric card is arranged shades of colour section, each color corresponds to formaldehyde in air by the variable concentrations solution after absorbing and the reacted solution colour of colour developing potpourri, and indicates the concentration of formaldehyde.The utility model structure is simple, and work efficiency is high, detects under the condition not needing detecting instrument to formaldehyde in indoor air burst size, easy and simple to handle, use cost is low, safe and reliable.
Description
Technical field
The utility model belongs to field of chemical detection, relates to a kind of on-the site analysis and detects apparatus, particularly a kind of detection bag measuring formaldehyde in air content for disposable analysis.
Background technology
Formaldehyde (HCHO) is a kind of important industrial chemicals, is widely used in chemical industry, and the product such as sheet material, paint, leather, coating, antiseptic, sanitizer of its synthesis is widely used in workplace and family.At present, the World Health Organization (WHO) has confirmed that formaldehyde is teratogenesis, carcinogen, is allergen, and Long Term Contact will cause gene mutation.In China's indoor air, the maximum permissible concentration of formaldehyde state health standards is 0.08mg/m
3, when content of formaldehyde is 0.1mg/m
3time, just there are peculiar smell and sense of discomfort; Concentration is high again to cause nausea, vomit, cough, uncomfortable in chest, even pulmonary emphysema of panting; When content reaches 30mg/m
3time, just can causing death.According to the display of related data statistics: at present China's city 60%-94% new clothes repair the house in concentration of formaldehyde exceed national standard, and mean concentration is state health standards 0.08mg/m
33-10 doubly, not only far away higher than western developed country level, also higher than developing country's level.Formaldehyde has become one of main pollution of indoor, and therefore the content of formaldehyde real-time detected in room air is the important topic being related to national economy.
In the detection field of formaldehyde, the method for monitoring and analyzing carrying out formaldehyde in indoor environment and air of workplace normally adopts absorption tube or sampling pump to gather the air sample of certain volume, then takes back use for laboratory chemical colorimetry or vapor-phase chromatography measurement.Although such detection is highly sensitive, accurate, need instrument to detect, determination step complexity is time-consuming, needs professional to operate, and measures costly, and not easily popularizes.
Utility model content
The purpose of this utility model is the quick detection bag providing a kind of formaldehyde for the deficiencies in the prior art, have simple, convenient, use cost is low, analyze quickly and measure formaldehyde in air content.
The technical scheme that the utility model adopts:
A kind of quick detection bag of formaldehyde, comprise air-tight bottle, wrapper that distilled water is housed, be provided with in described wrapper and measure pipe, absorption of sample reaction box and colorimetric card, mensuration pipe, absorption of sample reaction box and colorimetric card are hedged off from the outer world by wrapper, avoid detecting making moist of reagent, described mensuration pipe comprises a transparent cylindricality tubular container, the top overcoat plug of cylindricality tubular container, can prevent external interference thing from entering in detector tube, affect Detection results, in cylindricality tubular container, interval arranges two-layer sieve plate, an interlayer is enclosed to form by two-layer sieve plate and cylindricality tubular container, between sieve plate, (namely in interlayer) loads developer (developer forms through heating, drying after being mixed with zeyssatite by the mixed liquor of hydrochloric acid and ferric ammonium sulfate), sieve plate plays a part fixing filler, the inside of cylindricality tubular container is also provided with piston, piston and pipe bolt connect firmly, piston can be made to move around in cylindricality tubular container by draw-tube bolt, described absorption of sample reaction box is made up of box body and lid, is inside provided with phenol reagent, and when lid is tightened, reaction box is sealing state, described colorimetric card is arranged shades of colour section, each color corresponds to formaldehyde in air by the variable concentrations solution after absorbing and the reacted solution colour of colour developing potpourri, and indicates the concentration of formaldehyde, and concentration unit is mg/m
3.
When detecting, pour the distilled water in air-tight bottle into absorption of sample reaction box, shake after tightening lid, after the phenol reagent in absorption of sample reaction box is dissolved completely, lid is opened, reaction box being put into room makes it fully absorb the formaldehyde of air, and this is formaldehyde sample absorption reaction liquid.Take off the plug measuring pipe top overcoat, be inserted on top in absorbing liquid, handle of pulling back, pipe bolt drives piston to move backward, the space in pipe is made to form negative pressure, under suction function, formaldehyde sample absorption reaction liquid is inhaled in pipe, and enters interlayer and developer reacts, (if room temperature is lower than 10 DEG C, during reaction, with the powder medicine mixture layer holding tight syringe, armrest temperature adds thermal response).Observe the reacted color of developer, contrast with subsidiary colorimetric card, the concentration of formaldehyde in air can be read according to shade.
The technique effect that the utility model reaches:
(1) simple to operate, several steps of conventional Analysis Methods for Formaldehyde are concentrated in together, any power supply and instrument need not be used to complete detection, very easy to use.
(2) at the scene, testing result can reveal at mensuration body accurately, directly perceived, clear, easy result of determination.
(3) cheap, be applicable to ordinary consumer and be used in the content of formaldehyde that oneself detects room, office and the aspect such as workplace, inner space.
(4) fast, simply formaldehyde in air content can be reflected, highly sensitive, can single-time measurement result.
(5) adopt prefabricated reagent, without the need to extemporaneous preparation, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation cut-open view of mensuration pipe of the present utility model.
Fig. 2 is the structural representation of absorption of sample reaction box of the present utility model.
In figure: 1, plug; 2, cylindricality tubular container; 3, sieve plate; 4, developer; 5, piston; 6, pipe bolt; 7, box body; 8 lids; 9, phenol reagent.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the utility model is described in further detail, but not as to restriction of the present utility model.
The quick detection bag of formaldehyde provided by the utility model, comprise air-tight bottle, wrapper that distilled water is housed, air-tight bottle is plastic bottle, in-built 50mL distilled water, sealing avoid distilled water contaminated, reveal, be provided with in described wrapper and measure pipe, absorption of sample reaction box and colorimetric card, mensuration pipe, absorption of sample reaction box and colorimetric card are hedged off from the outer world by wrapper, avoid detecting making moist of reagent.
Described mensuration pipe comprises a transparent cylindricality tubular container 2, as shown in Figure 1, polypropylene injection molding used by cylindricality tubular container 2, at the top overcoat plug 1 of cylindricality tubular container, can prevent external interference thing from entering in detector tube, affect Detection results, in cylindricality tubular container, interval arranges two-layer sieve plate 3, sieve plate 3 is that material makes with tygon, an interlayer is enclosed to form by two-layer sieve plate and cylindricality tubular container, between sieve plate, (namely in interlayer) loads developer 4, sieve plate plays a part fixing filler, developer 4 is formed through heating, drying after the ratio of 2:1 mixes the mixed liquor of hydrochloric acid and ferric ammonium sulfate and zeyssatite, wherein in mixed liquor, the concentration of hydrochloric acid is 0.6%, ferric ammonium sulfate is 2%, the inside of cylindricality tubular container is also provided with piston 5, and piston and pipe bolt 6 connect firmly, and piston can be made to move around in cylindricality tubular container by draw-tube bolt.
Described absorption of sample reaction box is made up of box body 7 and lid 8, and as shown in Figure 2, reaction box adopts plastic material to make, and size: diameter is about 60mm-70mm, height is about 35mm-40mm.Facilitate on-site measurement to guide and support and avoid fragmentation of colliding with; Be provided with 50mg phenol reagent 9 in reaction box, when lid is tightened, reaction box is sealing state.
Described colorimetric card is arranged shades of colour section, each color corresponds to formaldehyde in air by the variable concentrations solution after absorbing and the reacted solution colour of colour developing potpourri, and indicates the concentration of formaldehyde, and concentration unit is mg/m
3.
Using method is as follows:
1), before detecting, by tested room under the state of natural ventilation, external door and window closes 2 hours.50mL distilled water in air-tight bottle is all poured in absorption of sample reaction box.To tighten after lid shake 10 seconds, after allowing the phenol reagent in absorption of sample reaction box dissolve completely, lid is opened.Plastic casing is placed in indoor detection site or distance 1 meter, ground height and position, expose 40 minutes, now in box, liquid is formaldehyde sample absorption reaction liquid.
2) detection of pipe is measured: take off the plug measuring pipe top overcoat, top is inserted in formaldehyde sample absorption reaction liquid, to pull back handle, pipe bolt drives piston to move backward, the space in sleeve is made to form negative pressure, under suction function, formaldehyde sample absorption reaction liquid is inhaled in pipe (suck 5mL), makes it enter interlayer and developer reacts 15min.(if room temperature is lower than 10 DEG C, during reaction, with the powder medicine mixture layer holding tight syringe, armrest temperature adds thermal response.)
3) result interpretation: the color of the potpourri that develops the color in Observe and measure pipe, contrasts with subsidiary colorimetric card, can read the concentration of formaldehyde in air according to shade, unit is mg/m
3.
Claims (2)
1. a quick detection bag for formaldehyde, is characterized in that: comprise air-tight bottle, wrapper that distilled water is housed, is provided with and measures pipe, absorption of sample reaction box and colorimetric card in described wrapper; Described mensuration pipe comprises a transparent cylindricality tubular container, the top overcoat plug of cylindricality tubular container, in cylindricality tubular container, interval arranges two-layer sieve plate, between sieve plate, load developer, the inside of cylindricality tubular container is also provided with piston, and piston and pipe bolt connect firmly; Described absorption of sample reaction box is made up of box body and lid, is inside provided with phenol reagent; Described colorimetric card is arranged shades of colour section, each color corresponds to formaldehyde in air by the variable concentrations solution after absorbing and the reacted solution colour of colour developing potpourri, and indicates the concentration of formaldehyde.
2. the quick detection bag of formaldehyde according to claim 1, is characterized in that: colorimetric card is indicated the unit of concentration of formaldehyde is mg/m
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550141.6U CN204101464U (en) | 2014-09-23 | 2014-09-23 | A kind of quick detection bag of formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420550141.6U CN204101464U (en) | 2014-09-23 | 2014-09-23 | A kind of quick detection bag of formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204101464U true CN204101464U (en) | 2015-01-14 |
Family
ID=52269883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420550141.6U Expired - Fee Related CN204101464U (en) | 2014-09-23 | 2014-09-23 | A kind of quick detection bag of formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204101464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203538A (en) * | 2015-10-10 | 2015-12-30 | 福州大学 | Method and detecting tube for visually detecting meat freshness based on gold nanoparticle material |
| CN109540880A (en) * | 2018-12-05 | 2019-03-29 | 宋义喜 | A kind of biological respinse type indoor formaldehyde detection method |
-
2014
- 2014-09-23 CN CN201420550141.6U patent/CN204101464U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203538A (en) * | 2015-10-10 | 2015-12-30 | 福州大学 | Method and detecting tube for visually detecting meat freshness based on gold nanoparticle material |
| CN105203538B (en) * | 2015-10-10 | 2017-10-20 | 福州大学 | Method and detection pipe based on gold nano-material Visual retrieval freshness of meat |
| CN109540880A (en) * | 2018-12-05 | 2019-03-29 | 宋义喜 | A kind of biological respinse type indoor formaldehyde detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |