CN105628699A - Method for detecting formaldehyde content in boards - Google Patents
Method for detecting formaldehyde content in boards Download PDFInfo
- Publication number
- CN105628699A CN105628699A CN201511011389.0A CN201511011389A CN105628699A CN 105628699 A CN105628699 A CN 105628699A CN 201511011389 A CN201511011389 A CN 201511011389A CN 105628699 A CN105628699 A CN 105628699A
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- CN
- China
- Prior art keywords
- formaldehyde
- liquid
- added
- formaldehyde content
- sheet material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
-
- 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
Abstract
The invention discloses a method for detecting the formaldehyde content in boards. The method comprises the steps that 1, water is used as extract liquid, substances released from a tested sample are extracted through microwaves, and the extraction time ranges from 4 min to 8 min; 2, purified dialkyl succinic acid sulphonate is added into a container; 3, the liquid formed in the step 1 is added, and an equal amount of distilled water is added; 4, 25 microliters of formaldehyde color developing agent is added for standing for 15-20 min, and shaking is performed every 5 min; 5, a spectrophotometer is adopted for comparing the color of the liquid in the step 4 with a standard chromatoplate, and then the result can be judged. The method is simple, feasible, low in cost, free of pollution, particularly suitable for an enterprise to perform self-testing on the formaldehyde release property of products, wide in application range and capable of being applied to sampling detection of the boards and detection of the formaldehyde content in other products.
Description
Technical field
The present invention relates to the detection method of a kind of formaldehyde content, especially relate to the detection method of formaldehyde content in a kind of sheet material, belong to environmental monitoring field.
Background technology
At present, the method measuring burst size of methanal in sheet material in China national standard mainly adopts Extraction method, but perforation method cost height, complicated operation, it may also be useful to drug variety many, especially toluene is poisonous, it is difficult to process, easily pollutes, not easily test oneself means as manufacturer. Market also exists the equipment that certain operations method simply detects formaldehyde in air, but whether formaldehyde in air content can only be exceeded standard and do observational measurement, artificial board formaldehyde burst size can not be measured, more can not do quantitative measurment.
Summary of the invention
For prior art exist deficiency, technical problem to be solved by this invention is, it is provided that the detection method of formaldehyde content in a kind of sheet material, simple, cost is low, pollution-free.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is, in a kind of sheet material, the detection method of formaldehyde content, comprises the following steps:
(1) taking water as extraction liquid, extracted by the releaser in tested exemplar by microwave, the extraction time is 4-8min;
(2) the dialkyl group succinic acid sulfonate of purifying is added in a reservoir;
(3) add in step (1) liquid formed, add equivalent distilled water;
(4) add 25 �� l formaldehyde developers, leave standstill 15-20min, shake every 5min once even;
(5) adopt spectrophotometer that the color of liquid in step (4) and the contrast of standard colour chart plate are got final product judged result.
Optimizing, the detection method of formaldehyde content in above-mentioned sheet material, the formaldehyde developer in its step (4) is methyl ethyl diketone or chromotropic acid.
Optimizing, the detection method of formaldehyde content in above-mentioned sheet material, the concentration of its formaldehyde developer is 0.035g ml.
The method simple possible of the present invention, cost are low, pollution-free, are particularly suitable for using when product Form aldehyde release performance is tested oneself by enterprise; Applied widely, the present invention is possible not only to the sampling Detection for sheet material, it is also possible to the formaldehyde content for other products detects.
Embodiment
Embodiment 1
The present invention is the detection method of formaldehyde content in a kind of sheet material, comprises the following steps: that (1) take water as extraction liquid, is extracted by the releaser in tested exemplar by microwave, and the extraction time is 4min;
(2) the dialkyl group succinic acid sulfonate of purifying is added in a reservoir; (3) add in step (1) liquid formed, add equivalent distilled water;
(4) add 25 �� l formaldehyde developer and methyl ethyl diketones, leave standstill 15min, shake every 5min once even;
(5) adopt spectrophotometer that the color of liquid in step (4) and the contrast of standard colour chart plate are got final product judged result.
The concentration of formaldehyde developer is 0.035g ml.
Embodiment 2
The present invention is the detection method of formaldehyde content in a kind of sheet material, comprises the following steps: that (1) take water as extraction liquid, is extracted by the releaser in tested exemplar by microwave, and the extraction time is 8min;
(2) the dialkyl group succinic acid sulfonate of purifying is added in a reservoir;
(3) add in step (1) liquid formed, add equivalent distilled water
(4) add 25 �� l formaldehyde developer and methyl ethyl diketones, leave standstill 20min, shake every 5min once even;
(5) adopt spectrophotometer that the color of liquid in step (4) and the contrast of standard colour chart plate are got final product judged result.
The concentration of formaldehyde developer is 0.035g ml.
Embodiment 3
The present invention is the detection method of formaldehyde content in a kind of sheet material, comprises the following steps: that (1) take water as extraction liquid, is extracted by the releaser in tested exemplar by microwave, and the extraction time is 6min;
(2) the dialkyl group succinic acid sulfonate of purifying is added in a reservoir;
(3) add in step (1) liquid formed, add equivalent distilled water
(4) add 25 �� l formaldehyde developer and chromotropic acids, leave standstill 18min, shake every 5min once even;
(5) adopt spectrophotometer that the color of liquid in step (4) and the contrast of standard colour chart plate are got final product judged result.
The concentration of formaldehyde developer is 0.035g ml. The method simple possible of the present invention, cost are low, pollution-free, are particularly suitable for using when product Form aldehyde release performance is tested oneself by enterprise; Applied widely, the present invention is possible not only to the sampling Detection for sheet material, it is also possible to the formaldehyde content for other products detects.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are enable to realize or use the present invention. To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, the present invention can not be limited in these embodiments shown in this article, but be met the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. the detection method of formaldehyde content in sheet material, comprises the following steps:
(1) taking water as extraction liquid, extracted by the releaser in tested exemplar by microwave, the extraction time is 4-8min;
(2) the dialkyl group succinic acid sulfonate of purifying is added in a reservoir;
(3) add in step (1) liquid formed, add equivalent distilled water;
(4) add 25 �� l formaldehyde developers, leave standstill 15-20min, shake every 5min once even;
(5) adopt spectrophotometer that the color of liquid in step (4) and the contrast of standard colour chart plate are got final product judged result.
2. the detection method of formaldehyde content in sheet material according to claim 1, it is characterised in that: the formaldehyde developer in described step (4) is methyl ethyl diketone or chromotropic acid.
3. the detection method of formaldehyde content in sheet material according to claim 1, it is characterised in that: the concentration of described formaldehyde developer is 0.035g ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011389.0A CN105628699A (en) | 2015-12-30 | 2015-12-30 | Method for detecting formaldehyde content in boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011389.0A CN105628699A (en) | 2015-12-30 | 2015-12-30 | Method for detecting formaldehyde content in boards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105628699A true CN105628699A (en) | 2016-06-01 |
Family
ID=56043837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511011389.0A Withdrawn CN105628699A (en) | 2015-12-30 | 2015-12-30 | Method for detecting formaldehyde content in boards |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105628699A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866119A (en) * | 2016-06-07 | 2016-08-17 | 渤海大学 | Method for detecting endogenous formaldehyde in squids |
| CN108107009A (en) * | 2017-12-20 | 2018-06-01 | 贺州宝兴新材料有限公司 | The detection method of content of formaldehyde in melamine terminal plate |
-
2015
- 2015-12-30 CN CN201511011389.0A patent/CN105628699A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866119A (en) * | 2016-06-07 | 2016-08-17 | 渤海大学 | Method for detecting endogenous formaldehyde in squids |
| CN108107009A (en) * | 2017-12-20 | 2018-06-01 | 贺州宝兴新材料有限公司 | The detection method of content of formaldehyde in melamine terminal plate |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160601 |
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| WW01 | Invention patent application withdrawn after publication |