CN203811546U - Rapid formaldehyde detecting rod - Google Patents
Rapid formaldehyde detecting rod Download PDFInfo
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- CN203811546U CN203811546U CN201420200902.5U CN201420200902U CN203811546U CN 203811546 U CN203811546 U CN 203811546U CN 201420200902 U CN201420200902 U CN 201420200902U CN 203811546 U CN203811546 U CN 203811546U
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- formaldehyde
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- detecting rod
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Abstract
The utility model discloses a rapid formaldehyde detecting rod comprising a handholding end, a middle section and a detecting end, wherein a formaldehyde detecting reagent is carried at the detecting end. The formaldehyde detecting reagent is composed of a formaldehyde reactant, a color developing agent and a solvent. The formaldehyde reactant is long-chain fatty amine, the color developing agent is an acid-base indicator, and the solvent is an organic solvent. The detecting rod is placed in a closed detecting space, and the content of formaldehyde is judged according to color change after 30min. The rapid formaldehyde detecting rod is simple in detecting process, convenient and rapid in use, remarkable in effect, free of liquid reagent, environment-friendly and long in storage time.
Description
Technical field
The utility model relates to a kind of fast detecting rod of formaldehyde, is particularly useful for field quick detection, belongs to Environmental security detection technique field.
Background technology
Formaldehyde is a kind of colourless, has the gas of intense stimulus, has volatile characteristic.Formaldehyde is one of major pollutants of indoor environment, by the World Health Organization (WHO), is defined as carcinogenic and teratogenesis material.It is 80ppb that World Health Organization (WHO) regulation is exposed to the safe concentration in 30 minutes in formaldehyde, the formaldehyde exposure concentration that U.S. Occupational Safety and Health Administration (OSHA) regulation allows is 750ppb, and extreme dangerous concentrations (IDLH) is 20ppm.The formaldehyde that sucks high concentration there will be serious stimulation and oedema, eye shouting pain and the headache of respiratory tract.The formaldehyde of Long Term Contact low concentration can cause slow poisoning, causes dizzy weak, neurasthenia, mental depression and chronic respiratory disease etc.Formaldehyde is more serious to infant and pregnant woman's harm, can cause the serious consequences such as fetal anomaly and miscarriage.
Formaldehyde is widely used in the production of bonding agent in constructional ornamental material, in recent years along with the use of artificial board, furniture and various finishing materials in interior decoration, finishing finish formaldehyde that rear residual and resin decompose can be slowly towards periphery environment discharge, cause formaldehyde content in indoor air to exceed standard, this process is 5 to 10 years, therefore very important to the detection of Formaldehyde in Environment, in case the injury that Formaldehyde in Environment exceeds standard and brings.
The Analysis Methods for Formaldehyde of stipulating in national standard is at present mainly diacetone spectrophotometric method (GB/T15516-1995), phenol reagent spectrophotometric method and vapor-phase chromatography (GB/T18204.26-2000), diacetone spectrophotometric method is to utilize formaldehyde and diacetone and ammonia to generate yellow compound 3,5-acetyl group-1, after 4 dihydropyridine two carbonic acid, under 412nm, carry out spectrophotometry; Phenol reagent spectrophotometric method is that formaldehyde reacts generation piperazine with phenol reagent, and piperazine is formed blue-green compound by ferric ion oxidation in acid solution, and shade is directly proportional to content of formaldehyde.Spectrophotometry process is more loaded down with trivial details, detection is subject to impurity and disturbs, and vapor-phase chromatography is higher to equipment requirement, is not all suitable for field quick detection.
The product of the Rapid Detection of Formaldehyde content occurring in the market has formaldehyde detection reagent kit and Test paper.Formaldehyde detection reagent kit generally adopts liquid-absorbant, need use plurality of liquid chemical reagent and chemicals powder, and needs own manual configuration absorption liquid, and misoperation may pollute, and being also not suitable for is having pregnant woman and infant's family to use.Existing test paper for formaldehyde detection generally adopts filter paper or nonwoven fabrics, but because the osmotic-pressure-tolerant of filter paper or nonwoven fabrics is low, the test paper that is loaded with formaldehyde catching agent and developer there will be the not obvious inhomogeneous situation of color range, and impact detects effect.These fast detecting products all adopt colourimetry, and traditional formaldehyde colorimetric detection method is basis mainly with the nucleophilic addition of aromatic amine or hydrazine and formaldehyde, by reacting of amine and formaldehyde, cause conjugated system change color.Because the reactivity of most aromatic amines or hydrazine class and formaldehyde is relatively low, reaction velocity is slow, and is subject to other analog interference, and therefore the common sensitivity of formaldehyde examination based on these class methods is lower, and detection time is partially long.
Utility model content
The utility model is the deficiency for prior art and product, has aimed to provide out a kind of convenience, and environmental friendliness, not containing liquid reagent, without manual configuration, detects effective formaldehyde fast detecting rod.
The utility model by the following technical solutions, a kind of formaldehyde fast detecting rod, by handheld terminal, interlude and test side, formed, handheld terminal consists of the right cylinder of bottom and the round platform on top, lower cylindrical body side surface is scabbled, interlude is a right cylinder, and test side is a semicylinder, and test side is loaded with formaldehyde testing reagent;
Described detection segment top is also provided with a circular hole;
Adopt one-body molded design, material is that high temperature is cotton.
The utility model can be realized the fast detecting to Formaldehyde in Environment, and testing process is simple, easy to use, not containing liquid reagent, and environmental friendliness.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the schematic diagram of a kind of formaldehyde fast detecting of the utility model rod
Fig. 2 is the exploded view of each assembly of a kind of formaldehyde fast detecting of the utility model rod
Fig. 3 is the vertical view of a kind of formaldehyde fast detecting of the utility model rod
In figure, Reference numeral is expressed as:
1, handheld terminal; 2, interlude; 3, test side; 4, formaldehyde testing reagent; 5, circular hole
Embodiment
Technical solutions of the utility model are not limited to following cited embodiment, also comprise the combination in any between each embodiment.
As Figure 1-3, a kind of formaldehyde fast detecting rod of the present utility model, by handheld terminal 1, interlude 2 and test side 3, formed, handheld terminal consists of the right cylinder of bottom and the round platform on top, lower cylindrical body side surface is scabbled, interlude is a right cylinder, test side is a semicylinder, test side is loaded with formaldehyde testing reagent 4, described detection segment 3 tops are also provided with a circular hole 5, can increase the contact area of air and formaldehyde testing reagent, this formaldehyde fast detecting rod adopts one-body molded design, and material is that high temperature is cotton.Because high temperature cotton is a kind of glass fibre, in fiber, there are a lot of holes, make adhering to of formaldehyde testing reagent more stable, also improved the stability that detects effect simultaneously.
Described formaldehyde testing reagent is by formaldehyde reaction agent, developer and solvent composition.Formaldehyde reaction agent is long-chain fat amine, long-chain fat amine can with formaldehyde reaction, generate schiff bases, described formaldehyde reaction agent can be, but not limited to lauryl amine, positive tridecyl amine, tetradecy lamine or long-chain fat amine, and the final concentration in formaldehyde testing reagent is 0.1～0.5mol/L; Developer is acid base indicator thymol blue, owing to before and after reaction, the variation of Acidity of Aikalinity can occurring, and the variation that thymol blue can this Acidity of Aikalinity of high-sensitive indication, thus can promote the sensitivity of monitoring, the final concentration in formaldehyde testing reagent is 1g/L.
After the positive tridecyl amine of 50g, 1g thymol blue can being mixed, use toluene constant volume in 1L, or after being mixed, 42.7g tetradecy lamine, 1g thymol blue use normal butyl alcohol constant volume in 1L, then draw this 3 μ l formaldehyde testing reagent, dropping is in a side of test bar 4, allow formaldehyde testing reagent naturally spread, natural air drying in formaldehydeless environment.
Before detection, need detection space airtightly, test bar is placed in detection space, after 30 minutes, take out, observe change color; If test bar color is still blue, show in detection space that content of formaldehyde is lower than 0.1mg/m
3; If test bar color becomes green, show in detection space that content of formaldehyde is at 0.1mg/m
3to 1.0mg/m
3between, content of formaldehyde exceeds standard; If test bar color becomes yellow, show that in detection space, content of formaldehyde is greater than 1.0mg/m
3, content of formaldehyde exceeds standard more than 10 times.
The utility model can be realized the fast detecting to Formaldehyde in Environment, and testing process is simple, easy to use, and not containing liquid reagent, environmental friendliness, easily preserves, and the holding time is long.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And among the protection domain that the apparent variation of being extended out thus or change are still created in the utility model.
Claims (3)
1. a formaldehyde fast detecting is excellent, it is characterized in that: by handheld terminal (1), interlude (2) and test side (3), formed, handheld terminal (1) consists of the right cylinder of bottom and the round platform on top, lower cylindrical body side surface is scabbled, interlude (2) is a right cylinder, test side (3) is a semicylinder, and test side (3) are loaded with formaldehyde testing reagent (4).
2. formaldehyde fast detecting rod according to claim 1, is characterized in that: described detection segment (3) top is also provided with a circular hole (5).
3. formaldehyde fast detecting rod according to claim 1 and 2, is characterized in that: adopt one-body molded design, material is that high temperature is cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200902.5U CN203811546U (en) | 2014-04-23 | 2014-04-23 | Rapid formaldehyde detecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200902.5U CN203811546U (en) | 2014-04-23 | 2014-04-23 | Rapid formaldehyde detecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811546U true CN203811546U (en) | 2014-09-03 |
Family
ID=51450280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200902.5U Expired - Fee Related CN203811546U (en) | 2014-04-23 | 2014-04-23 | Rapid formaldehyde detecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983635A (en) * | 2014-04-23 | 2014-08-13 | 北京安生绿源科技有限公司 | Rapid detection rod for formaldehyde and method for rapidly detecting formaldehyde |
| CN106970078A (en) * | 2017-05-15 | 2017-07-21 | 北京长江脉医药科技有限责任公司 | A kind of test paper and its preparation and detection method for detecting OPA |
| CN108132242A (en) * | 2016-12-01 | 2018-06-08 | 中国科学院大连化学物理研究所 | A kind of preparation method and applications of formaldehyde gas on-line quick detection sensor |
-
2014
- 2014-04-23 CN CN201420200902.5U patent/CN203811546U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983635A (en) * | 2014-04-23 | 2014-08-13 | 北京安生绿源科技有限公司 | Rapid detection rod for formaldehyde and method for rapidly detecting formaldehyde |
| CN108132242A (en) * | 2016-12-01 | 2018-06-08 | 中国科学院大连化学物理研究所 | A kind of preparation method and applications of formaldehyde gas on-line quick detection sensor |
| CN108132242B (en) * | 2016-12-01 | 2021-06-01 | 中国科学院大连化学物理研究所 | Preparation method and application of formaldehyde gas on-line rapid detection sensor |
| CN106970078A (en) * | 2017-05-15 | 2017-07-21 | 北京长江脉医药科技有限责任公司 | A kind of test paper and its preparation and detection method for detecting OPA |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |