CN106568767A - Method for rapidly discriminating real and fake natural colored cotton and products thereof - Google Patents
Method for rapidly discriminating real and fake natural colored cotton and products thereof Download PDFInfo
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- CN106568767A CN106568767A CN201610951983.6A CN201610951983A CN106568767A CN 106568767 A CN106568767 A CN 106568767A CN 201610951983 A CN201610951983 A CN 201610951983A CN 106568767 A CN106568767 A CN 106568767A
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- 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 method for rapidly discriminating real and fake natural colored cotton and products thereof. The method adopting cotton or a cotton product as a product to be detected comprises the following steps: 1, preparing a treatment liquid comprising, by weight, 0-5% of aromatic aldehyde, 1-90% of alcohol, 0.5-50% of an acid, and the balance of water; 2, immersing the product to be detected in the treatment liquid at 0-95 DEG C; and 3, discriminating that whether the product to be detected is natural colored cotton according to the color change of the immersed product to be detected. The method can be used to simultaneously discriminate real and fake natural brown cotton and real and fake natural green cotton.
Description
Technical field
The present invention relates to natural color cotton production and its commodity circulation in true and false natural color cotton quick discriminating side
Method.
Background technology
Natural color cotton is extensively favored as a kind of " green " environment-protection fiber that need not be bleached, dye by consumer, and
Preferable business development has been obtained.China has become natural color cotton plant development big country maximum in the world, accounts for the world total
The 60% of yield, produces total value per year more than 30,000,000,000 yuan.Environmental protection is the significant characteristic of natural color cotton, and consumer is to pure day
So the demand of hygienic environment-protecting type textile has been greatly facilitated the development of natural color cotton piece market, but counterfeit and shoddy goods
Arise at the historic moment therewith.White cotton into the color of close natural color cotton, is pretended to be natural color cotton commercially to sell by lawless person
Sell, dragons and fishes jumbled together to cause market, natural color cotton production, distributors' interests sustain a loss.
In order to safeguard the interests of natural color cotton businessman and consumer, specification color cotton market promotes color cotton industry
Develop in a healthy way, the supervision in market, certification are also essential.Accomplish this point, possess a set of simple, reliable qualitative natural colorful
The method of cotton raw material and product is particularly important.But, also it is used in commodity inspection without a kind of reliable color cotton qualitative identification method.
At present, the detection method reported is more, such as N element content measuring method (patent CN 200610118615.X), Flavone content
Method of testing (patent CN 201410263423.2), copper ammon solution process+microscope observational method (patent CN
200710098853.3), UV-Vis DRS spectrographic method (patent CN 201210539850.X), etc..These methods or
It is that detecting step is loaded down with trivial details, takes time and effort, or influence factor is numerous and accuracy rate is not high, or valuable scientific instrument are needed,
Operability for commodity inspection is not strong.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of true and false natural liquor storeroom reacted based on chemical colour reaction and true
The authentication method of false nature forest resource.
In order to solve above-mentioned technical problem, the present invention provides the side of a kind of true and false natural color cotton of quick discriminating and its product
Method, using cotton or cotton products as product to be tested, comprises the following steps：
1), treatment fluid (polynary treatment fluid) is prepared：
The treatment fluid is by following weight content into being grouped into：
2), product to be tested is put in treatment fluid carries out immersion treatment in 0～95 DEG C (preferably 10 DEG C of room temperature～95 DEG C)；
3), according to the change of product to be tested color after immersion treatment differentiating whether it belongs to natural color cotton.
The improvement of the method for the true and false natural color cotton of quick discriminating and its product as the present invention：
The step 3) be：
Product to be tested after immersion treatment is directly carried out the differentiation of color change；
Or, the differentiation of color change will be again carried out after product to be tested washing, drying after immersion treatment.
The further improvements in methods of the true and false natural color cotton of quick discriminating and its product as the present invention：
The aromatic aldehyde is vanillin (No. CAS：121-33-5) and to di methyl amino cinnamaldehyde (No. CAS：6203-18-
5) at least one (that is, both select one or both to select) in；
The alcohol is methanol, ethanol, propanol；
The acid is mineral acid or organic acid.
The further improvements in methods of the true and false natural color cotton of quick discriminating and its product as the present invention：
The mineral acid is hydrochloric acid, sulphuric acid, phosphoric acid, nitric acid；The organic acid is formic acid, acetic acid.
The further improvements in methods of the true and false natural color cotton of quick discriminating and its product as the present invention：
When product to be tested is brown cotton or brown cotton products：
The preferable content of aromatic aldehyde is 0.01%～5% in treatment fluid；
The step 2) immersion treatment for immersion at least 1 minute (soak time length more preferably, it is general 2)；
The step 3) be：
The color of product to be tested is significantly deepened after immersion treatment, i.e., in celadon, blackish green, grey black, dark-grey brown these
During feature, product to be tested is judged as natural liquor storeroom or natural brown cotton products；
Conversely, after immersion treatment the color of product to be tested do not change, (slightly shoaling) or the color change of slightly fading different from
During features described above color, then it is judged to dye brown cotton or the brown cotton products of dyeing.
The further improvements in methods of the true and false natural color cotton of quick discriminating and its product as the present invention：
When product to be tested is green cotton or green cotton products：
The step 2) immersion treatment be at least 1 second (soak time length more preferably, general 10 seconds)；
The step 3) be：
The color of product to be tested is significantly changed after immersion treatment, i.e. during in light brown, brown, these features of rufous, sentenced
Product to be tested is determined for nature forest resource or natural green cotton products；
Conversely, after immersion treatment the color of product to be tested do not change, (slightly shoaling) or the color change of slightly fading different from
During features described above color, then it is judged to dye green cotton or the green cotton products of dyeing.
The treatment fluid of the present invention is the polybasic reagent treatment fluid containing aromatic aldehyde, alcohol, acid and water, solution for pistac or
It is colourless, and pH≤5.5.
The present invention process step be：Select the container (test tube, beaker etc.) of a sizeable glass or porcelain；Will
Sample immersion is filled in the container of polynary treatment fluid；Container is placed into a period of time at room temperature or under heating condition；Visually
The change of observation color sample.
In the present invention, cotton sample product are carried out at room temperature processing 5 minutes or so, you can distinguish true and false natural color cotton.
In order to faster, more accurately complete discrimination process, suitably treatment fluid can be heated.By sample washing, drying after process
Can more accurately distinguish between colors, be conducive to accurately differentiating true and false natural liquor storeroom.
The present invention principle be：According to this laboratory result of study for many years, natural liquor storeroom and nature forest resource
Pigment composition is polyphenol compound, the basic chemical property for possessing phenolic compound.Phenolic compound under certain condition may be used
There is phenol formaldehyde condensation reaction with aldehydes, this is the theoretical basiss of the present invention.Under specific condition, polyphenol pigment in color cotton with
Aromatic aldehyde possesses the probability of the chemical reaction for occurring as shown in Figure 1, and changes the color development system of pigment molecular, and then significantly
Change the color of color cotton.And the color cotton palmed off is formed with synthetic dyestuffs dyeing, synthetic dyestuffs do not possess Polyphenols substantially
Molecular structure as compounds, thus the phenol formaldehyde condensation that will not occur to be similar to therewith reacts and color development.
Compared with prior art, the present invention has following technical advantage：
1st, the present invention proposes first the principle using phenol formaldehyde condensation reaction according to the chemical property of natural color cotton pigment,
Detection sample is processed using aldehydes reagent, by the change of color sample true and false natural liquor storeroom and true and false natural is differentiated
Green cotton.This method is easy, quick, differentiates that brown cotton sample is only needed 5 minutes, differentiates that green cotton sample only needs the several seconds；The party
Method reliability, accuracy rate is high.
2nd, the formula for the treatment of fluid (polynary treatment fluid) is simple, cost is extremely low；
3rd, process step is succinct.
In sum, the chemical property of natural liquor storeroom and green cotton pigment is the present invention relates to the use of, it is polynary using one kind
Chemical reagent treatment fluid, processes under certain conditions fiber, and the color for making natural colorful cotton fibre occurs specific change, from
And reach the purpose of the true and false natural colorful cotton fibre of quick discriminating and its product.The method that the present invention is provided can be simultaneously to true and false day
So brown cotton and true and false nature forest resource are differentiated.The method is easy to operate, rapid, and experimental result is intuitive and reliable, is well suited for
In commercial detection for natural color cotton and its product.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the phenolic aldehyde chemical reaction mechanism figure that the present invention is based on.
Fig. 2 is true and false natural liquor storeroom, the picture of true and false nature forest resource after the before processing of the embodiment of the present invention 1.
Fig. 3 is true and false natural liquor storeroom, the picture of true and false nature forest resource after the process of embodiment of the present invention 2-1.
Fig. 4 is true and false natural liquor storeroom, the picture of true and false nature forest resource after the process of the embodiment of the present invention 3.
Fig. 5 is true and false natural liquor storeroom, the picture of true and false nature forest resource after the process of embodiment of the present invention 4-1.
Specific embodiment
With reference to specific embodiment, the present invention is described further, but protection scope of the present invention is not limited in
This.
Remarks explanation：True/false natural liquor storeroom, true/false natural green cotton fiber described in following case is from market
The representative kind of upper collection, according to accuracy highest UV-Vis DRS spectrographic method generally acknowledged at present
Confirm its correctness.
Concentrated hydrochloric acid refers to the hydrochloric acid of mass fraction >=37%.
Embodiment 1,
According to the following formulation (percentage by weight) prepares treatment fluid：
Vanillin：1.5%
Methanol：50%
Acetic acid：23.5%
Water：Surplus (is settled to 100%).
The pH of the treatment fluid is about 0.4.
Take the above-mentioned treatment fluid of 4 parts of 7mL respectively respectively to insert in a test tube；The corresponding addition true/false natural liquor storerooms of 0.1g,
True/false natural green cotton fiber, in making fiber immersion treatment fluid, 5min is placed by test tube in 95 DEG C of water-baths.
True and false brown cotton sample after by before processing is washed 2 times in 100ml water, and 60 DEG C are dried 30 minutes, observe before processing
The change of fiber color afterwards.The true and false nature forest resource sample directly observed after before processing.Color contrast is as shown in Figure 2.
Natural liquor storeroom after process is in grey black；And dye brown cotton and only slightly shoal, i.e. it is slight to fade, but still similar to
Original brown.
Nature forest resource color Jing after processing becomes light brown, and dyes green cotton color and be basically unchanged.
Therefore the method can effectively differentiate true and false natural liquor storeroom and true and false nature forest resource.
Embodiment 2-1,
According to the following formulation (percentage by weight) prepares treatment fluid：
To di methyl amino cinnamaldehyde：0.01%
Propanol：10%
Formic acid：4.09%
Water：Surplus (is settled to 100%).
The pH of the treatment fluid is about 1.53.
Take the above-mentioned treatment fluid of 4 parts of 7mL respectively respectively to insert in a test tube, the true and false natural liquor storerooms of corresponding addition 0.1g and
True and false natural green cotton fiber, in making fiber immersion treatment fluid, under room temperature 10min is placed.
True and false brown cotton sample after by before processing is washed 2 times, and the change of fiber color after before processing is observed in 60 DEG C of drying
Change.The true and false nature forest resource sample directly observed after before processing.Color contrast is as shown in Figure 3.
Natural liquor storeroom after process is in celadon, and dyes brown cotton and only slightly shoal；Nature forest resource face Jing after processing
Complexion changed is into rufous, and it is slightly thin out to dye green cotton color.Therefore, the method can effectively differentiate true and false natural liquor storeroom and natural green
Color cotton.
Embodiment 2-2, the use for cancelling " to di methyl amino cinnamaldehyde " in embodiment 2-1, i.e. its content is by 0.01%
Make 0% into；The corresponding content for adjusting water；Remaining is equal to embodiment 2-1.Only true and false natural green cotton fiber is reflected
Not.
Nature forest resource color Jing after processing becomes light brown, and it is slightly thin out to dye green cotton color.Therefore, the method
True and false nature forest resource can effectively be differentiated；But visually the contrast strong degree of color is not so good as embodiment 2-1.
Embodiment 2-3, the time at room temperature placing the true and false natural green cotton fiber in embodiment 2-1 are by 10min
Make 10 seconds into；Remaining is equal to embodiment 2-1.Only true and false natural green cotton fiber is differentiated.
Nature forest resource color Jing after processing becomes light brown, and it is slightly thin out to dye green cotton color.Therefore, the method
True and false nature forest resource can effectively be differentiated；But visually the contrast strong degree of color is not so good as embodiment 2-1.
Embodiment 2-4, to before processing after true and false brown cotton sample cancel and " observe after before processing fine again after washing, drying
The change of dimension color ", i.e. be also the color of the true and false natural liquor storeroom sample directly observed after before processing；Remaining is equal to reality
Apply a 2-1.Only true and false natural brown cotton fiber is differentiated.
Natural liquor storeroom after process is in celadon, and dyes brown cotton and only slightly shoal；Therefore, the method also can effectively differentiate
True and false natural liquor storeroom.
Embodiment 3,
According to the following formulation (percentage by weight) prepares treatment fluid：
Vanillin：0.5%
Ethanol：70%
Concentrated hydrochloric acid：19.5%
Water：Surplus (is settled to 100%).
The pH of the treatment fluid is about 0.21.
Take the above-mentioned treatment fluid of 4 parts of 7mL respectively respectively to insert in a test tube, the true and false natural liquor storerooms of corresponding addition 0.1g and
True and false natural green cotton fiber, in making fiber immersion treatment fluid, by test tube 2min in 50 DEG C of water-baths is placed on.
True and false brown cotton sample after by before processing is washed 2 times, and 60 DEG C dry 30 minutes, fiber color after observation before processing
Change.The true and false nature forest resource sample directly observed after before processing.Color contrast is as shown in Figure 4.
Natural liquor storeroom after process is in blackish green, and dyes brown cotton and only slightly shoal；Nature forest resource face Jing after processing
Complexion changed is into rufous, and it is slightly thin out to dye green cotton color.Therefore, the method can effectively differentiate true and false natural liquor storeroom and natural green
Color cotton.
Embodiment 4-1,
According to the following formulation (percentage by weight) prepares treatment fluid：
To di methyl amino cinnamaldehyde：3.5%
Propanol：85%
Phosphoric acid：0.7%
Water：Surplus (is settled to 100%).
The pH of the treatment fluid is about 4.02.
Take the above-mentioned treatment fluid of 4 parts of 7mL respectively respectively to insert in a test tube, the true and false natural liquor storerooms of corresponding addition 0.1g and
True and false natural green cotton fiber, in making fiber immersion treatment fluid, test tube is placed at room temperature 5min.
True and false brown cotton sample after by before processing is washed 2 times, and 60 DEG C dry 30 minutes, fiber color after observation before processing
Change.The true and false nature forest resource sample directly observed after before processing.Color is as shown in Figure 5.
Natural liquor storeroom after process is in grey black, and dyes brown cotton and only slightly shoal；Nature forest resource face Jing after processing
Complexion changed is into light brown, and the green cotton color of dyeing is constant, and the method can effectively differentiate true and false natural liquor storeroom and nature forest resource.
Embodiment 4-2, by 3.5% into 5% will be made to the content of di methyl amino cinnamaldehyde in embodiment 4-1, accordingly changed
Become the content of water, remaining is equal to embodiment 4-1.
Natural liquor storeroom after process is in grey black, and dyes brown cotton and only slightly shoal；Nature forest resource face Jing after processing
Complexion changed is into light brown, and the green cotton color of dyeing is constant, and the method can effectively differentiate true and false natural liquor storeroom and nature forest resource.
Comparative example 1-1, make the vanillin in embodiment 1 into 10.0% by 1.5%, the corresponding content for changing water, remaining
It is equal to embodiment 1.
Acquired results are：The color of the natural liquor storeroom after process is slightly deepened, and the color for dyeing brown cotton is also brown, place
The brown cotton region of crude palm cotton and dyeing after reason is not it is obvious that differentiating that natural liquor storeroom is more difficult with dyeing brown cotton；At Jing
The color of the nature forest resource after reason slightly shoals, and the green cotton color of dyeing is constant, and true and false nature forest resource is carried out according to color change
Distinguish, erroneous judgement probability is higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 1-2, make the vanillin in embodiment 1 into 0% (that is, cancelling the use of vanillin) by 1.5%, accordingly
Water make 26.5% into by 25%, remaining is equal to embodiment 1.Only true/false natural liquor storeroom is detected.
Acquired results are：The color of the natural liquor storeroom after process is constant, and the color for dyeing brown cotton slightly shoals, after process
Crude palm cotton and the brown cotton region of dyeing be not it is obvious that can not effectively differentiate natural liquor storeroom with dyeing brown cotton.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 1-3, make the vanillin in embodiment 1 into benzaldehyde, content is constant, and remaining is equal to embodiment 1.
Acquired results are：The color of the natural liquor storeroom after process is constant, and the color of the brown cotton of dyeing is also constant, therefore can not
Effectively differentiate natural liquor storeroom with dyeing brown cotton；The slightly general brown of color of the nature forest resource Jing after processing, dyes green cotton face
Color is constant, and according to this color change is distinguished true and false nature forest resource, and erroneous judgement probability is higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 1-4, make the vanillin in embodiment 1 into anisaldehyde, content is constant, and remaining is equal to embodiment 1.
Acquired results are：The color of the natural liquor storeroom after process slightly shoals, and the color of the brown cotton of dyeing is basically unchanged, therefore
Can not effectively differentiate natural liquor storeroom with dyeing brown cotton；The slightly general brown of color of the nature forest resource Jing after processing, dyes green
Cotton color is constant, and according to this color change is distinguished true and false nature forest resource, and erroneous judgement probability is higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 1-5, the use for cancelling acetic acid in embodiment 1, the corresponding content for increasing water；Remaining is equal to embodiment 1.
The pH of the treatment fluid is about 6.8.
Acquired results are：The color of the natural liquor storeroom after process is constant, and the color of the brown cotton of dyeing is also constant, therefore can not
Effectively differentiate natural liquor storeroom with dyeing brown cotton；The color of the nature forest resource Jing after processing is constant, dyes green cotton color
It is constant, thus can not true and false nature forest resource distinguished.
Therefore the prescription for the treatment of liquid cannot be used for effectively differentiating true and false natural liquor storeroom and true and false nature forest resource.
Comparative example 2-1, by 3.5% into 10% will be made to di methyl amino cinnamaldehyde in embodiment 4-1, accordingly change water
Content, remaining is equal to embodiment 4-1.
Acquired results are：The color of the natural liquor storeroom after process is deeper, and the color of the brown cotton of dyeing is also deepened, after process
Although crude palm cotton and the brown cotton of dyeing have any different, but difference is obvious not as the effect of inventive formulation；It is natural Jing after processing
The color of green cotton slightly shoals, and dyes green cotton color and also shoals, and according to this color change is distinguished true and false nature forest resource, by mistake
Sentence probability higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 2-2, by 3.5% into 0% will be made to di methyl amino cinnamaldehyde in embodiment 4-1 and (that is, cancel to two
The use of methylamino cinnamic aldehyde), the corresponding content for changing water, remaining is equal to embodiment 4-1.
Acquired results are：The color of the natural liquor storeroom after process slightly shoals, and the color for dyeing brown cotton also slightly shoals, and locates
The difference of the brown cotton of crude palm cotton and dyeing after reason is not it is obvious that therefore differentiating that natural liquor storeroom is relatively stranded with dyeing brown cotton
It is difficult；The color of the nature forest resource Jing after processing slightly shoals, and the green cotton color of dyeing is constant, and according to this color change is to true and false natural green
Cotton is distinguished color, and erroneous judgement probability is higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 2-3, paradime thylaminobenzaldehyde, content will be made to di methyl amino cinnamaldehyde in embodiment 4-1 into
Constant, remaining is equal to embodiment 4-1.
Acquired results are：The color of the natural liquor storeroom after process is constant, and the color for dyeing brown cotton is also constant, it is impossible to have
Effect differentiates natural liquor storeroom with dyeing brown cotton；The color of the nature forest resource Jing after processing slightly shoals, and dyes green cotton color not
Become, according to this color change is distinguished true and false nature forest resource, erroneous judgement probability is higher.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that accuracy rate to be relatively low.
Comparative example 2-4, in embodiment 4-1 into Veratraldehyde will be made to di methyl amino cinnamaldehyde, contained
Amount is constant, and remaining is equal to embodiment 4-1.
Acquired results are：The color of the natural liquor storeroom after process is slightly deepened, and the color for dyeing brown cotton is also slightly deepened, no
Can effectively differentiate natural liquor storeroom with dyeing brown cotton；The color of the nature forest resource Jing after processing slightly shoals, and dyes green cotton
Color also slightly shoals, it is impossible to which according to this color change is distinguished true and false nature forest resource.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource that feasibility to be relatively low.
Comparative example 2-5, the use for cancelling phosphoric acid in embodiment 4-1, the corresponding content for adjusting water；Remaining is equal to embodiment
4-1.The pH of the treatment fluid is about 6.2.
Acquired results are：The color of the natural liquor storeroom after process is constant, and the color for dyeing brown cotton is also constant, it is impossible to have
Effect differentiates natural liquor storeroom with dyeing brown cotton；The color of the nature forest resource Jing after processing is constant, dyes the color of green cotton
It is constant, it is impossible to true and false nature forest resource is distinguished according to the color change of sample after before processing.
Therefore the prescription for the treatment of liquid is used to differentiate true and false natural liquor storeroom and true and false nature forest resource, not with feasibility.
Finally, in addition it is also necessary to it is noted that listed above is only several specific embodiments of the invention.Obviously, this
It is bright to be not limited to above example, there can also be many deformations.One of ordinary skill in the art can be from present disclosure
The all deformations directly derived or associate, are considered as protection scope of the present invention.
Claims (6)
1. the method for the true and false natural color cotton of quick discriminating and its product, is characterized in that：Using cotton or cotton products as product to be tested, bag
Include following steps：
1), treatment fluid is prepared：
The treatment fluid is by following weight content into being grouped into：
2), product to be tested is put in treatment fluid carries out immersion treatment in 0～95 DEG C；
3), according to the change of product to be tested color after immersion treatment differentiating whether it belongs to natural color cotton.
2. the method for the true and false natural color cotton of quick discriminating according to claim 1 and its product, is characterized in that：
The step 3) be：
Product to be tested after immersion treatment is directly carried out the differentiation of color change；
Or, the differentiation of color change will be again carried out after product to be tested washing, drying after immersion treatment.
3. the method for the true and false natural color cotton of quick discriminating according to claim 1 and 2 and its product, is characterized in that：
The aromatic aldehyde is for vanillin and at least one in di methyl amino cinnamaldehyde；
The alcohol is methanol, ethanol, propanol；
The acid is mineral acid or organic acid.
4. the method for the true and false natural color cotton of quick discriminating according to claim 3 and its product, is characterized in that：
The mineral acid is hydrochloric acid, sulphuric acid, phosphoric acid, nitric acid；The organic acid is formic acid, acetic acid.
5. the method for the true and false natural color cotton of quick discriminating according to claim 3 and its product, is characterized in that：
When product to be tested is brown cotton or brown cotton products：
The step 2) immersion treatment for immersion at least 1 minute；
The step 3) be：
The color of product to be tested is significantly deepened after immersion treatment, i.e., in celadon, blackish green, grey black, dark-grey brown these features
During color, product to be tested is judged as natural liquor storeroom or natural brown cotton products；
Conversely, do not change when the color of product to be tested after immersion treatment, slightly fade or color change different from features described above color when,
Then it is judged to dye brown cotton or the brown cotton products of dyeing.
6. the method for the true and false natural color cotton of quick discriminating according to claim 3 and its product, is characterized in that：
When product to be tested is green cotton or green cotton products：
The step 2) immersion treatment be at least 1 second；
The step 3) be：
The color of product to be tested is significantly changed after immersion treatment, i.e. during in light brown, brown, these features of rufous, judge to treat
Survey product are nature forest resource or natural green cotton products；
Conversely, do not change when the color of product to be tested after immersion treatment, slightly fade or color change different from features described above color when,
Then it is judged to dye green cotton or the green cotton products of dyeing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271435A (en) * | 2017-05-31 | 2017-10-20 | 湖北省纤维检验局 | A kind of qualitative identification method of natural color cotton product |
| CN109813706A (en) * | 2019-02-19 | 2019-05-28 | 东莞浦利姆环保科技有限公司 | Cotton pads fades degree detecting liquid and detection method |
| CN111505004A (en) * | 2020-04-21 | 2020-08-07 | 东华大学 | Method for identifying natural colored cotton and dyed cotton |
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| CN109813706A (en) * | 2019-02-19 | 2019-05-28 | 东莞浦利姆环保科技有限公司 | Cotton pads fades degree detecting liquid and detection method |
| CN111505004A (en) * | 2020-04-21 | 2020-08-07 | 东华大学 | Method for identifying natural colored cotton and dyed cotton |
| CN111505004B (en) * | 2020-04-21 | 2021-04-06 | 东华大学 | Method for identifying natural colored cotton and dyed cotton |
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