CN108287159A - A kind of chemical reagent and preparation method thereof for formaldehyde in food detection - Google Patents
A kind of chemical reagent and preparation method thereof for formaldehyde in food detection Download PDFInfo
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- CN108287159A CN108287159A CN201810124843.0A CN201810124843A CN108287159A CN 108287159 A CN108287159 A CN 108287159A CN 201810124843 A CN201810124843 A CN 201810124843A CN 108287159 A CN108287159 A CN 108287159A
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- G—PHYSICS
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- 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
- G01N21/783—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 for analysing gases
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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
- G01N21/75—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
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Abstract
The invention discloses a kind of chemical reagent and preparation method thereof for formaldehyde in food detection, include the raw material of following parts by weight：1.5 3 parts of 0.4 0.9 parts of ammonium acetate, 16 22 parts of ethyl alcohol, 0.8 2 parts of disodium hydrogen phosphate, 0.1 0.4 parts of luminol, 46 parts of sulphur, 36 parts of blue stone, 25 parts of sodium hypochlorite, 2.4 4.5 parts of oxalic acid, 48 parts of acetylacetone,2,4-pentanedione, 56 parts of petroleum ether and potassium chloride.Raw material sources of the present invention are extensive, and preparation process is simple, easy to use, can be quickly and accurately to whether being judged containing formaldehyde in food, and accuracy rate is very high, and stability in use is good.
Description
Technical field
The present invention relates to a kind of chemical reagent, specifically a kind of chemical reagent for formaldehyde in food detection.
Background technology
With the development of the social economy, market commodity are more and more diversified, but also occur some fake and forged quotient simultaneously
Product are disrupted the market, and endanger consumer's interests, especially food, fake and forged or adulterate, in some instances it may even be possible to be made to health
At harm.
Formaldehyde, chemical formula are HCHO or CH2O, formula weight 30.03, also known as formaldehyde.Colourless gas has special penetrating odor,
There is stimulation to human eye, nose etc..Gas relative density 1.067（Air=1）, fluid density 0.815g/cm3（-20℃）.It is molten
- 92 DEG C of point, -19.5 DEG C of boiling point.Soluble easily in water and ethyl alcohol.The concentration of aqueous solution reaches as high as 55%, typically 40%, referred to as formaldehyde
Water is commonly called as formalin（formalin）, it is the colourless liquid for having penetrating odor, formaldehyde, which is that country is explicitly provided, to be forbidden eating
The additive used in product must not detect in food, but all detect the presence of formaldehyde in many food in various degree, for a long time
The formaldehyde of Low Level Exposure can cause slow poisoning, lead to dizzy weak, neurasthenia, mental depression and chronic respiratory disease
Deng formaldehyde is more serious to the harm of infant and pregnant woman, can lead to the serious consequences such as fetal anomaly and miscarriage.
Since formaldehyde can brighten, change color and luster, therefore formaldehyde often by illegal retailer be used for fumigating or be added directly into wheaten food,
In mushroom or bean product, illegal retailer with " sodium formaldehyde sulfoxylate " fumigate related food brighten when, can also in food removing residue formaldehyde, food
Formaldehyde in product can cause human body very macrolesion, therefore formaldehyde is of great significance in instrument.
Invention content
The purpose of the present invention is to provide a kind of chemical reagent for formaldehyde in food detection, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of chemical reagent for formaldehyde in food detection includes the raw material of following parts by weight：0.4-0.9 parts of ammonium acetate, second
16-22 parts of alcohol, 0.8-2 parts of disodium hydrogen phosphate, 0.1-0.4 parts of luminol, 4-6 parts of sulphur, 3-6 parts of blue stone, hypochlorous acid
1.5-3 parts of 2-5 parts of sodium, 2.4-4.5 parts of oxalic acid, 4-8 parts of acetylacetone,2,4-pentanedione, 5-6 parts of petroleum ether and potassium chloride.
As a further solution of the present invention：The chemical reagent for formaldehyde in food detection, including following weight
The raw material of part：0.6-0.9 parts of ammonium acetate, 18-22 parts of ethyl alcohol, 1.2-2 parts of disodium hydrogen phosphate, luminol 0.16-0.4
Part, 4.5-6 parts of sulphur, 4-6 parts of blue stone, 2.8-5 parts of sodium hypochlorite, 3.2-4.5 parts of oxalic acid, 5.5-8 parts of acetylacetone,2,4-pentanedione, petroleum ether
5.2-6 parts and 2-3 parts of potassium chloride.
As a further solution of the present invention：The chemical reagent for formaldehyde in food detection, including following weight
The raw material of part：0.8 part of ammonium acetate, 21 parts of ethyl alcohol, 1.7 parts of disodium hydrogen phosphate, 0.35 part of luminol, 5.4 parts of sulphur, courage
2.5 parts of 5.2 parts of alum, 4 parts of sodium hypochlorite, 3.8 parts of oxalic acid, 7 parts of acetylacetone,2,4-pentanedione, 5.6 parts of petroleum ether and potassium chloride.
The preparation method of the chemical reagent for formaldehyde in food detection, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and total weight 2-3 are added by step 2
Distilled water again, is heated to 55-68 degrees Celsius and is kept for 16-20 hours, obtain the first mixed solution after stirring evenly；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and are added the distilled water of 2-4 times of total weight, stirs evenly by step 3
And 2-4 hours are stood, the second mixed solution is obtained；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
As a further solution of the present invention：Mixing speed in step 2 and step 3 is 240-360rpm.
The application method of the chemical reagent for formaldehyde in food detection, is as follows：By article to be detected
It is crushed to 280-320 mesh, is 1 according still further to the mass ratio of article to be detected and distilled water:80-110 is uniformly mixed, and is obtained to be detected
Liquid takes drop liquid to be detected with a clean rubber head dropper and instills in the test tube for containing only distilled water, after stirring evenly
It takes a drop reagent to instill in the test tube with another clean rubber head dropper, shake or stirs 1-2 minutes, observation test tube is
No discoloration.
Compared with prior art, the beneficial effects of the invention are as follows：Raw material sources of the present invention are extensive, and preparation process is simple, make
With convenient, can be quickly and accurately to whether being judged containing formaldehyde in food, and accuracy rate is very high, stability in use
It is good.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of chemical reagent for formaldehyde in food detection includes the raw material of following parts by weight：0.4 part of ammonium acetate, ethyl alcohol 16
Part, 0.8 part of disodium hydrogen phosphate, 0.1 part of luminol, 4 parts of sulphur, 3 parts of blue stone, 2 parts of sodium hypochlorite, 2.4 parts of oxalic acid, second
1.5 parts of 4 parts of acyl acetone, 5 parts of petroleum ether and potassium chloride.
The preparation method of the chemical reagent for formaldehyde in food detection, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and 3 times of total weight are added by step 2
Distilled water, be heated to after stirring evenly 59 degrees Celsius and keep 18 hours, obtain the first mixed solution；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and are added the distilled water of 3 times of total weight, stirs evenly simultaneously by step 3
And 2 hours are stood, obtain the second mixed solution；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
The application method of the chemical reagent for formaldehyde in food detection, is as follows：By article to be detected
280 mesh are crushed to, are 1 according still further to the mass ratio of article to be detected and distilled water:90 are uniformly mixed, and liquid to be detected are obtained, with one
The clean rubber head dropper of root takes drop liquid to be detected and instills in the test tube for containing only distilled water, with another after stirring evenly
Clean rubber head dropper takes a drop reagent to instill in the test tube, shakes or stirs 1 minute, and whether observation test tube changes colour.
Embodiment 2
A kind of chemical reagent for formaldehyde in food detection includes the raw material of following parts by weight：0.6 part of ammonium acetate, ethyl alcohol 18
Part, 1.2 parts of disodium hydrogen phosphate, 0.16 part of luminol, 4.5 parts of sulphur, 4 parts of blue stone, 2.8 parts of sodium hypochlorite, oxalic acid 3.2
Part, 5.5 parts of acetylacetone,2,4-pentanedione, 5.2 parts of petroleum ether and 2 parts of potassium chloride.
The preparation method of the chemical reagent for formaldehyde in food detection, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and total weight 2-3 are added by step 2
Distilled water again is heated to 64 degrees Celsius and is kept for 18 hours, obtains the first mixing after being stirred evenly with the rotating speed of 270rpm
Solution；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and the distilled water of 4 times of total weight are added, with 360rpm's by step 3
Rotating speed stirs evenly and stands 2.5 hours, obtains the second mixed solution；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
The application method of the chemical reagent for formaldehyde in food detection, is as follows：By article to be detected
320 mesh are crushed to, are 1 according still further to the mass ratio of article to be detected and distilled water:100 are uniformly mixed, and liquid to be detected are obtained, with one
The clean rubber head dropper of root takes drop liquid to be detected and instills in the test tube for containing only distilled water, with another after stirring evenly
Clean rubber head dropper takes a drop reagent to instill in the test tube, shakes or stirs 2 minutes, and whether observation test tube changes colour.
Embodiment 3
A kind of chemical reagent for formaldehyde in food detection includes the raw material of following parts by weight：0.8 part of ammonium acetate, ethyl alcohol 21
Part, 1.7 parts of disodium hydrogen phosphate, 0.35 part of luminol, 5.4 parts of sulphur, 5.2 parts of blue stone, 4 parts of sodium hypochlorite, oxalic acid 3.8
Part, 7 parts of acetylacetone,2,4-pentanedione, 5.6 parts of petroleum ether and 2.5 parts of potassium chloride.
The preparation method of the chemical reagent for formaldehyde in food detection, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and 3 times of total weight are added by step 2
Distilled water, be heated to after stirring evenly 62 degrees Celsius and keep 20 hours, obtain the first mixed solution；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and are added the distilled water of 3 times of total weight, stirs evenly simultaneously by step 3
And 2 hours are stood, obtain the second mixed solution；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
The application method of the chemical reagent for formaldehyde in food detection, is as follows：By article to be detected
320 mesh are crushed to, are 1 according still further to the mass ratio of article to be detected and distilled water:88 are uniformly mixed, and liquid to be detected are obtained, with one
The clean rubber head dropper of root takes drop liquid to be detected and instills in the test tube for containing only distilled water, with another after stirring evenly
Clean rubber head dropper takes a drop reagent to instill in the test tube, shakes or stirs 2 minutes, and whether observation test tube changes colour.
Embodiment 4
A kind of chemical reagent for formaldehyde in food detection includes the raw material of following parts by weight：0.9 part of ammonium acetate, ethyl alcohol 22
Part, 2 parts of disodium hydrogen phosphate, 0.4 part of luminol, 6 parts of sulphur, 6 parts of blue stone, 5 parts of sodium hypochlorite, 4.5 parts of oxalic acid, acetyl
3 parts of 8 parts of acetone, 6 parts of petroleum ether and potassium chloride.
The preparation method of the chemical reagent for formaldehyde in food detection, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and 3 times of total weight are added by step 2
Distilled water, be heated to after being stirred evenly with the rotating speed of 360rpm 65 degrees Celsius and keep 18 hours, it is molten to obtain the first mixing
Liquid；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and the distilled water of 3 times of total weight are added, with 300rpm's by step 3
Rotating speed stirs evenly and stands 2 hours, obtains the second mixed solution；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
The application method of the chemical reagent for formaldehyde in food detection, is as follows：By article to be detected
320 mesh are crushed to, are 1 according still further to the mass ratio of article to be detected and distilled water:105 are uniformly mixed, and liquid to be detected are obtained, with one
The clean rubber head dropper of root takes drop liquid to be detected and instills in the test tube for containing only distilled water, with another after stirring evenly
Clean rubber head dropper takes a drop reagent to instill in the test tube, shakes or stirs 2 minutes, and whether observation test tube changes colour.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (6)
1. a kind of chemical reagent for formaldehyde in food detection, which is characterized in that include the raw material of following parts by weight：Ammonium acetate
0.4-0.9 parts, 16-22 parts of ethyl alcohol, 0.8-2 parts of disodium hydrogen phosphate, 0.1-0.4 parts of luminol, 4-6 parts of sulphur, blue stone
1.5-3 parts of 3-6 parts, 2-5 parts of sodium hypochlorite, 2.4-4.5 parts of oxalic acid, 4-8 parts of acetylacetone,2,4-pentanedione, 5-6 parts of petroleum ether and potassium chloride.
2. the chemical reagent according to claim 1 for formaldehyde in food detection, which is characterized in that including following weight
The raw material of part：0.6-0.9 parts of ammonium acetate, 18-22 parts of ethyl alcohol, 1.2-2 parts of disodium hydrogen phosphate, luminol 0.16-0.4
Part, 4.5-6 parts of sulphur, 4-6 parts of blue stone, 2.8-5 parts of sodium hypochlorite, 3.2-4.5 parts of oxalic acid, 5.5-8 parts of acetylacetone,2,4-pentanedione, petroleum ether
5.2-6 parts and 2-3 parts of potassium chloride.
3. the chemical reagent according to claim 1 for formaldehyde in food detection, which is characterized in that including following weight
The raw material of part：0.8 part of ammonium acetate, 21 parts of ethyl alcohol, 1.7 parts of disodium hydrogen phosphate, 0.35 part of luminol, 5.4 parts of sulphur, courage
2.5 parts of 5.2 parts of alum, 4 parts of sodium hypochlorite, 3.8 parts of oxalic acid, 7 parts of acetylacetone,2,4-pentanedione, 5.6 parts of petroleum ether and potassium chloride.
4. a kind of preparation method of the chemical reagent as described in any one of claims 1-3 for formaldehyde in food detection, special
Sign is, is as follows：
Step 1 weighs various raw materials according to parts by weight, spare；
Disodium hydrogen phosphate, luminol, sulphur, sodium hypochlorite and oxalic acid are mixed and total weight 2-3 are added by step 2
Distilled water again, is heated to 55-68 degrees Celsius and is kept for 16-20 hours, obtain the first mixed solution after stirring evenly；
Ammonium acetate, ethyl alcohol, blue stone and potassium chloride are mixed and are added the distilled water of 2-4 times of total weight, stirs evenly by step 3
And 2-4 hours are stood, the second mixed solution is obtained；
Step 4 by the first mixed solution and the second mixed solution and stirs evenly, sequentially adds acetylacetone,2,4-pentanedione and oil
Ether is stirred well to dissolving, you can obtain finished product.
5. the preparation method of the chemical reagent according to claim 4 for formaldehyde in food detection, which is characterized in that step
Rapid two and step 3 in mixing speed be 240-360rpm.
6. a kind of application method of the chemical reagent as described in any one of claims 1-3 for formaldehyde in food detection, special
Sign is, is as follows：Article to be detected is crushed to 280-320 mesh, according still further to the matter of article to be detected and distilled water
Amount is than being 1:80-110 is uniformly mixed, and is obtained liquid to be detected, is taken drop liquid to be detected with a clean rubber head dropper and drip
In the test tube for entering to contain only distilled water, a drop reagent is taken to instill the test tube with another clean rubber head dropper after stirring evenly
In, it shakes or stirs 1-2 minutes, whether observation test tube changes colour.
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| CN201810124843.0A CN108287159A (en) | 2018-02-08 | 2018-02-08 | A kind of chemical reagent and preparation method thereof for formaldehyde in food detection |
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| CN201810124843.0A CN108287159A (en) | 2018-02-08 | 2018-02-08 | A kind of chemical reagent and preparation method thereof for formaldehyde in food detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760726A (en) * | 2018-08-14 | 2018-11-06 | 山东五洲检测有限公司 | A kind of reagent and preparation method thereof of detection formaldehyde in food |
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| CN105372240A (en) * | 2015-12-16 | 2016-03-02 | 无锡吉进环保科技有限公司 | Preparation method of rapid formaldehyde detection reagent |
| CN105424693A (en) * | 2015-12-16 | 2016-03-23 | 无锡吉进环保科技有限公司 | Rapid detection reagent for formaldehyde |
| CN106198517A (en) * | 2016-07-01 | 2016-12-07 | 无锡市华东电力设备有限公司 | Formaldehyde testing reagent |
| CN107422085A (en) * | 2017-07-04 | 2017-12-01 | 河南艾能生物科技有限公司 | A kind of detection reagent of formaldehyde in food |
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2018
- 2018-02-08 CN CN201810124843.0A patent/CN108287159A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040023402A1 (en) * | 2002-07-30 | 2004-02-05 | Abels Robert D. | Agent for detecting malondialdehyde, method of making the same, and test kit for use thereof |
| CN105044002A (en) * | 2015-06-30 | 2015-11-11 | 苏州东辰林达检测技术有限公司 | Formaldehyde detection reagent and preparation method thereof |
| CN105372240A (en) * | 2015-12-16 | 2016-03-02 | 无锡吉进环保科技有限公司 | Preparation method of rapid formaldehyde detection reagent |
| CN105424693A (en) * | 2015-12-16 | 2016-03-23 | 无锡吉进环保科技有限公司 | Rapid detection reagent for formaldehyde |
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Application publication date: 20180717 |