CN201837590U - Test paper for rapidly detecting copper ion - Google Patents
Test paper for rapidly detecting copper ion Download PDFInfo
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- CN201837590U CN201837590U CN2010202881542U CN201020288154U CN201837590U CN 201837590 U CN201837590 U CN 201837590U CN 2010202881542 U CN2010202881542 U CN 2010202881542U CN 201020288154 U CN201020288154 U CN 201020288154U CN 201837590 U CN201837590 U CN 201837590U
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- test paper
- detection
- copper ion
- ferrocyanide
- ion
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Abstract
The utility model provides a piece of test paper for rapidly detecting copper ions, which mainly solves the problem that no test paper for rapidly detecting the copper ions is suitable for home use, is manly used for detecting the content of the copper ions in dried vegetables, fruits, preserved fruits, beverages and water, is convenient to carry, is rapid and convenient and has low cost. The test paper for rapidly detecting the copper ions comprises a test-paper basal body, wherein a detecting layer containing ferrocyanide ions is adsorbed on the test-paper basal body, and the pursuant chemical principle is that the ferrocyanide ions and the copper ions react to generate copper ferrocyanide as reddish-brown precipitates.
Description
Technical field
The utility model relates to a kind of quick detection test paper, is specifically related to a kind of quick detection test paper that is used for detecting dry-made vegetable, fruit, preserved fruit, beverage and water content of copper ion.
Background technology
Chlorophyll is a kind of natural colouring matter, and is relatively more responsive to light, heat, soda acid etc., normal fugitive color or variable color in the process of processing and storage.The coloring agent price that is used to bleaching and dyeing pollution-free food in the food additives is higher, and Color is not obvious, the price of every bottle 500 gram of common coloring agent about 50 yuan, quality high dyeing agent price even up to hundreds of unit.
Therefore, some illegal retailers strengthen sensory effects for the long-term green that keeps fruits and vegetables, cover low-quality goods, reduce cost, come the substitute food product adjuvant, as copper sulphate, stannous chloride, cupric chloride, cupric pyrophosphate, cuprous oxide, Schweinfurt green, copper carbonate etc. with mantoquita.
As everyone knows, copper sulphate is mainly used in fuel and pigment, pesticide, antiseptic, fabric mordant and beneficiation reagent etc. in inorganic industry, and the price of industrial sulphuric acid copper is 10 yuan/kilogram.The copper sulphate of excess intake can produce the look intense stimulus to human gastrointestinal tract, may cause nausea, vomit, mouthful in copper nature and flavor, heart-burn sense etc. are arranged; Severe patient may cause gastric colic, spitting blood, melena, hemoglobinuria, acute renal failure; Long-term contact can come in contact dermatitis and nose, eye stimulate, and gastrointestinal symptom occurs; Simultaneously,, cause the metabolic disturbance in the human body, symptoms such as cirrhosis and hepatic ascites occur when heavy metals such as the remaining a large amount of copper of human body very easily cause burden to internal organs.
The proposed standard of the World Health Organization (WHO) and grain farmer management committee is: man's average copper intake is no more than 12 milligrams/day, and woman's average copper intake is no more than 10 milligrams/day.And finding that in product investigation its copper content is up to 120 milligrams/kilogram-1200 milligrams/kilogram to illegal retailer, the consumer will produce huge threat to health when eating this series products.
At present, the method for quantitative measurement copper has atomic absorption method and extraction colorimetry in the food both at home and abroad, but these two kinds of methods are only applicable to the laboratory or the professional detects, and ordinary consumer is difficult to grasp.Therefore, be badly in need of a kind of suitable family expenses, and be easy to carry, quick, easy, the cheap product that can detect copper content in the food such as drying fruits and vegetables.Also be applicable to factory or open-air water quality detection.
And potassium ferrocyanide is commonly called as potassium ferrocyanide, and its toxicity ADI 0～0.025 is (in sodium ferrocyanide; FAO/WHO, 2001).Because of iron is very strong with combining of cyano group, so toxicity is extremely low.Be domestic and international widely used salt anticaking agent, the international food code council and Japan, Australia and New Zealand, European Union all allow to use as food additives.Allow it to use as anticaking agent at salt with in for salt product in China's " food additives use hygienic standard ", be used to prevent the salt caking, maximum use amount is 10mg/kg.
Summary of the invention
The utility model provides a kind of quick detection test paper of copper ion, has mainly solved the problem of not having the copper ion fast detecting product that is fit to family expenses in the background technology.
Technical solution of the present utility model is as follows:
The quick detection test paper of this copper ion comprises the test paper matrix, is adsorbed with the detection layers that contains ferrocyanide ion on the test paper matrix.
The above-mentioned detection layers that contains ferrocyanide ion is adsorbed in positive and negative two surfaces of test paper matrix or single surface.
The above-mentioned detection layers that contains ferrocyanide ion is provided with perforated membrane, and the ferrocyanide ion layer is also adsorbable to be fenestral fabric.
Above-mentioned test paper matrix can be selected papery test paper matrix, nonwoven fabrics test paper matrix etc.
The quick detection test paper of above-mentioned copper ion can be processed as strip, reel shape, ellipticity etc.
Above-mentioned test paper matrix comprises detection zone and operational zone, and the detection layers that contains ferrocyanide ion is arranged in the detection zone on the test paper matrix, and detection zone accounts for the 1/4-1/2 of test paper surface of the base body; Be provided with the frosted layer in the operational zone or distinguished, can avoid detecting liquid and contact with instrument or hand-held frosted layer or the color layers of directly contacting during operation with human body with color.
The above-mentioned detection layers that contains ferrocyanide ion is potassium ferrocyanide detection layers, sodium ferrocyanide detection layers or ferrous ammonium cyanide detection layers; Be good wherein to contain potassium ferrocyanide.
Advantage of the present utility model is:
The quick detection test paper of this copper ion is fit to family expenses, and cost is low, is easy to carry, and need not any professional knowledge and skills training can detect whenever and wherever possible, easy and simple to handle, and sense cycle is short, and the energy fast detecting goes out the content of copper ion in the determinand; Also be applicable to factory or open-air water quality detection.This test paper is highly sensitive, not only can the qualitative detection copper ion, and can the detection by quantitative copper ion.
The quick detection test paper detection limit of this copper ion can reach 20ppm, i.e. 0.002% copper content.
The quick detection test paper of this copper ion is provided with perforated membrane, or will be processed as reticulate texture in the detection layers that contains ferrocyanide ion, or with above-mentioned dual mode combination, when dropping liquid detected on the quick detection test paper of ion with instruments such as droppers, liquid to be measured was difficult for flowing out from test paper; The setting of detection zone and operational zone, liquid to be measured and human body contacts when having avoided hand-held detect simultaneously.
Description of drawings
Fig. 1 is the quick detection test paper structural representation of the utility model copper ion;
Fig. 2 is another structural representation of quick detection test paper of the utility model copper ion
Embodiment
Below in conjunction with Fig. 1, Fig. 2 the utility model is described in detail.
As shown in Figure 2, the quick detection test paper of this copper ion comprises test paper matrix 1, and the test paper matrix comprises detection zone 2 and operational zone 3, and detection zone accounts for the 1/4-1/2 of test paper surface of the base body; Be provided with frosted layer, any anti-skid and waterproof layer in the operational zone 3 or distinguished, during hand-held, can avoid detecting liquid and contact with human body with color.
The test paper matrix is adsorbed with the detection layers 2 that contains ferrocyanide ion respectively on the 1 positive and negative surface, and the detection layers that contains ferrocyanide ion is arranged in the detection zone 2 on the test paper matrix.
When preparing the quick detection test paper of this copper ion, elder generation is soaked in test paper matrix 1 and contains the potassium ferrocyanide solution that concentration is 5-15%, also can be that the potassium ferrocyanide solution coating test paper matrix of 5-15% (after on 1, obtains after drying with concentration.Wherein potassium ferrocyanide solution can be replaced with sodium ferrocyanide solution or ferrocyanide ammonium salt solution.
On the detection layers 2 that contains ferrocyanide ion, can be provided with perforated membrane, or will be processed as reticulate texture in the detection layers 2 that contains ferrocyanide ion, or with above-mentioned dual mode combination, it has been avoided with the liquid outflow to be measured when dropping liquid detects on the quick detection test paper of ion of instruments such as dropper.
The detection layers 2 that contains ferrocyanide ion is mainly used in and the determinand reaction, and its principle that mainly relies on is that ferrocyanide ion and copper ion reaction back generate the copper ferrocyanide red-brown precipitation, and its chemical equation is:
K
4[Fe(CN)
6]+2CuSO
4＝Cu
2[Fe(CN)
6]↓+2K
2SO
4
Determinand splashed into, immerses or be coated on the detection layers 2 that contains ferrocyanide ion react, the reaction variable color finishes the back and compares with standard colour chart, detects the content of copper ion.
During use, earlier fruits and vegetables to be measured are soaked in the water, water temperature is to be higher than 30 ℃ for good, according to the shade of fruits and vegetables, can add a spot of water earlier, treat drying to detect after fruit-vegetable recovered, can constantly shake during this time, accelerate dissolution then can directly detect for beverage and water.
Soak the back recovery time for different fruits and vegetables, in water also different, and its purpose is exactly that fruit and vegetable surfaces and the copper dissolution that is immersed in the inside are come out, and adding water can not be excessive, otherwise may cause concentration lower and can't detect with the detection test paper.
During detection, with transfer pipet, dropper, little spoon etc. get soak solution a little, splash into and detect on the test paper, maybe will detect test paper directly immerse the bubble have in the water of fruits and vegetables, moment takes out, and observes the test paper change color at once, and test paper can be from colourless or faint yellow rufous or the pale red of becoming, to detect test paper and standard colour chart compares, obtain content of copper ion in the fruits and vegetables.
Standard colour chart is to be immersed in by the detection test paper to contain one the standard colors bands of a spectrum of making in the different concentration known copper ion solutions, and the color when reaction finishes is being represented the content of copper ion, and color is shallow more, and the content of expression copper ion is low more, otherwise content is just high more.Standard colour chart can be formulated the quantity of contrast colors according to the different operating environment requirement, should be 6 looks at least, and standard colour chart can be independently or continuous; After finishing, preparation can be printed in the exterior and interior packing with the form of spectrogram.If standard colour chart is a chromatogram card then the side that can print or be bonded at box is fan-shaped, also can be printed on to be banded on the pros and cons.
Claims (8)
1. the quick detection test paper of a copper ion comprises the test paper matrix, it is characterized in that: be adsorbed with the detection layers that contains ferrocyanide ion on the described test paper matrix.
2. the quick detection test paper of copper ion according to claim 1, it is characterized in that: the described detection layers that contains ferrocyanide ion is adsorbed in positive and negative two surfaces of test paper matrix.
3. the quick detection test paper of copper ion according to claim 2, it is characterized in that: the described detection layers that contains ferrocyanide ion is a fenestral fabric, and the detection layers that contains ferrocyanide ion is provided with perforated membrane.
4. the quick detection test paper of copper ion according to claim 3, it is characterized in that: described test paper matrix is papery test paper matrix, nonwoven fabrics test paper matrix.
5. the quick detection test paper of copper ion according to claim 4, it is characterized in that: the quick detection test paper of described copper ion is the strip quick detection test paper, reel shape quick detection test paper or ellipticity quick detection test paper.
6. the quick detection test paper of copper ion according to claim 5, it is characterized in that: described test paper matrix comprises detection zone and operational zone, the detection layers that contains ferrocyanide ion is arranged in the detection zone on the test paper matrix, and detection zone accounts for the 1/4-1/2 of test paper surface of the base body.
7. the quick detection test paper of copper ion according to claim 6 is characterized in that: be provided with frosted layer or difference look in the described operational zone.
8. according to the quick detection test paper of the arbitrary described copper ion of claim 1 to 7, it is characterized in that: the described detection layers that contains ferrocyanide ion is potassium ferrocyanide detection layers, sodium ferrocyanide detection layers or ferrous ammonium cyanide detection layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202881542U CN201837590U (en) | 2010-08-11 | 2010-08-11 | Test paper for rapidly detecting copper ion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202881542U CN201837590U (en) | 2010-08-11 | 2010-08-11 | Test paper for rapidly detecting copper ion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837590U true CN201837590U (en) | 2011-05-18 |
Family
ID=44007698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202881542U Expired - Fee Related CN201837590U (en) | 2010-08-11 | 2010-08-11 | Test paper for rapidly detecting copper ion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502343A (en) * | 2015-01-23 | 2015-04-08 | 昆明泊银科技有限公司 | Making method of special dedicated test paper |
| CN111044512A (en) * | 2019-12-17 | 2020-04-21 | 谱尼测试集团股份有限公司 | Method for rapidly detecting potassium ferrocyanide in salt |
-
2010
- 2010-08-11 CN CN2010202881542U patent/CN201837590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502343A (en) * | 2015-01-23 | 2015-04-08 | 昆明泊银科技有限公司 | Making method of special dedicated test paper |
| CN111044512A (en) * | 2019-12-17 | 2020-04-21 | 谱尼测试集团股份有限公司 | Method for rapidly detecting potassium ferrocyanide in salt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20110811 |