CN1776408A - Sulfur dioxide rapid test kit and its use - Google Patents
Sulfur dioxide rapid test kit and its use Download PDFInfo
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- CN1776408A CN1776408A CN 200510016391 CN200510016391A CN1776408A CN 1776408 A CN1776408 A CN 1776408A CN 200510016391 CN200510016391 CN 200510016391 CN 200510016391 A CN200510016391 A CN 200510016391A CN 1776408 A CN1776408 A CN 1776408A
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Abstract
Without need of additional instrument, the kit is capable of mensurating range of sulfur dioxide contained in article rapidly; and minimum limit of detection is 6.0mg/Kg. The disclosed kit includes reactor with zinc powder, reactor plug with slit, 7-8m test paper of hydrochloric acid and lead acetate, the standard color grade in brown series, and thin plastic plant. The method includes steps: adding the soak of specimen to be tested into reactor with 0.5-2.0g zinc powder being loaded; adding hydrochloric acid, placing cover, overhanging wetted test paper of lead acetate inside the reactor; after 3 min, comparison is carried out between color of the test paper and standard color grade; determining content range of sulfur dioxide. Features are: simple operation, quick and sensitive, and widely available to test in site.
Description
Technical field
The invention belongs to a kind of detection kit, it relates to the method and the device thereof of fast measuring sulfur dioxide in food content.
Background technology
In recent years, some illegal retailers utilize various chemical methodes to come " beautifying " their commodity under the ordering about of money and interests, the deception consumer, and wherein commonplace a kind of situation is used sulfur fumigation food exactly.
Sulphur is a kind of yellow or faint yellow grain (powder) shape or tablet, easy firing.Sulphur is water insoluble, slightly is dissolved in ethanol and ether, is dissolved in carbon disulphide, phenixin and benzene.Have desinsection, kill mite and bactericidal action.
Because sulphur can combine with oxygen, produce sulphuric dioxide, and sulphuric dioxide has discoloration, so illegal retailer mainly utilizes sulfur fumigation to bleach or whitening foods in stifling process; Sulphur has bactericidal action again simultaneously, so it can be used to prevent food spoilage, extends the shelf life.Through the food of sulfur fumigation, can adulterate, its tempting outward appearance can attract more consumers.
Industrial sulphur contains noxious materials such as lead, sulphur, arsenic, and the edible food of being smoked by sulphur can the harmful to human respiratory system and liver, kidney.Sulphur combines with oxygen and generates sulphuric dioxide, can become sulphurous acid behind the chance water.Free sulphurous acid also has spread effect to people's stomach and intestine.Excess picked-up (4-6 gram on the one) can cause violent diarrhoea.Sulphurous acid enters food, not only destroys the vitamin B1 in the food, can also make calcium form insoluble substance, influences the absorption of human body to calcium.Make calcium form insoluble substance, influence the absorption of human body, can cause lung, encephaledema in the time of seriously, respiratory failure and death calcium.
The food list of process sulfur fumigation is on appearance, and the consumer is difficult to differentiate.At present, China does not still have the quick discriminating and the detection method of sulfur fumigation food, and the while is in view of the ubiquity and the seriousness of present circumstances, be badly in need of a kind of convenient and swiftly, be beneficial to operation, cheap experimental assembly, help the on-site measurement of ruck, also can be quality inspection organization and judge usefulness as the basis.
At present, SO in domestic widely-used tetrachloro mercury sodium-Pararosaniline colorimetric method for determining food
2Residual quantity [GB/T 5009.34-1996], but need to use the mercury bichloride and the operation steps complexity of severe toxicity in the mensuration process, need instrument and equipment simultaneously, also has bibliographical information in addition, sulphuric dioxide in the available oscillopolarographic detection food, but this method also needs instrument, is unfavorable for popularizing and on-site measurement.The sulfur dioxide rapid test method that has is long detection time, and sensitivity is low, as: ginger, white fungus, longan, lichee, lotus seeds, peeled shrimp, bean sprouts etc. will omissions.In a word, do not have as yet at present to be fit to on-the-spot the detection and to require, detect the fast measuring kit that contains sulphuric dioxide in the detection food that is limited to 6.0mg/Kg down.
Summary of the invention
The objective of the invention is in order to solve the deficiency that above-mentioned prior art exists, a kind of method and apparatus of fast detecting sulfur dioxide in food content is provided, its minimum detectability is 6.0mg/Kg, and has simple to operate, rapid sensitive, cheap, be beneficial to universal, be suitable for characteristics such as on-site measurement.
Technical scheme:
Fast measuring sulphuric dioxide kit, the box of forming by the reactor 1 that zinc powder 3 is housed, the reactor plug 2 that has slit, 7-8M hydrochloric acid 5, lead acetate paper 4, thin plastic sheet, standard color comparison card, standard color comparison card is the colour atla of brown series, and this card minimum detectability is 6.0mg/Kg.
Need to prove:
Sulfur dioxide rapid test kit, 5-20 by-reaction device 1 is housed in the kit, in every by-reaction device zinc powder is housed, zinc powder 3 quality are each aequum of measuring, be 0.5-2.0g, reactor plug 2 have the rectangle slit that runs through to communicate between two end faces up and down so that lead acetate paper 4 passes reactor plug 2 vertical hangings in reactor 1, the specification of thin plastic sheet is identical with test paper with shape.
In the sulfur dioxide rapid test kit, zinc powder quality recommendation employing 0.5g, concentration of hydrochloric acid are 7M in the reactor.
The brown of standard color comparison card is for being divided into 5-10 class from shallow to deep; And the sulfur dioxide concentration measured of corresponding respectively mark be 6.0mg/Kg to 100.0mg/Kg and more than.
Sulfur dioxide rapid test kit can be used for measuring the content range of sulfur dioxide in food; Concrete assay method is to be soaked in 10-20min in the 50mL distilled water after testing sample 10-20g is pulverized, getting above-mentioned 5-10mL soak solution joins in the reactor 1 that the 0.5-2.0g zinc powder is housed, after this add 7-8M hydrochloric acid 2-5mL, cover reactor plug 2 rapidly, wetting lead acetate paper 4 is inserted in the reactors 1, observe lead acetate paper 4 behind the 3min whether change color is arranged, if change color is arranged, just the color and the color on the standard color comparison card of lead acetate paper 4 are compared, select the close standard color comparison card value of color, be the concentration range of the contained sulphuric dioxide of testing sample.
Wherein the method that inserts of lead acetate paper 4 is that lead acetate paper 4 is invested on the plastic sheet, the wetting slit that afterwards injects reactor plug 2 in the lump together with plastic sheet, and vertical hanging is in reactor 1.
Beneficial effect:
Sulfur dioxide rapid test kit provided by the invention, concentration limit is 6.0mg/Kg, having changed the past needs instrument to the detection of sulphuric dioxide, waste time and energy, be not suitable for the deficiency of on-site measurement, this new detection method have rapid sensitive, cheap, be beneficial to universal, be suitable for characteristics such as on-site measurement.Kit of the present invention is applicable to the fast measuring of sulfur dioxide in food.
Description of drawings
Fig. 1: the standard color comparison card in the sulfur dioxide rapid test kit provided by the invention (color is a brown series colour atla);
Fig. 2: use sulfur dioxide rapid test kit provided by the invention and detect diagrammatic cross-section.
Embodiment
Embodiment 1:
5 by-reaction devices (15*17mm plastic test tube) are housed in the sulfur dioxide rapid test kit, in every by-reaction device the 0.5g zinc powder are housed, 1 of reactor plug.The reactor plug have the rectangle slit that runs through to communicate between two end faces up and down so that filter paper passes reactor plug vertical hanging in reactor.Also have 7M hydrochloric acid 50mL, 50 of lead acetate papers, 1 of thin plastic sheet in the kit, the colour atla that the specification of thin plastic sheet is identical with test paper with shape, 1 standard color comparison card of standard color comparison card is a brown series, this card minimum detectability is 6.0mg/Kg.As shown in Figure 1, the brown of standard color comparison card is for being divided into 5 kinds of color class from shallow to deep; And the sulfur dioxide concentration that corresponding respectively mark is measured is 6.0mg/Kg, 9.0mg/Kg, 30.0mg/Kg, 60.0mg/Kg, 100.0mg/Kg (the mask method of the definite and content of sulfur dioxide value of standard color comparison card brown series color, be to get configuration 6.0mg/Kg, 9.0mg/Kg, 30.0mg/Kg, 60.0mg/Kg, 100.0mg/Kg standard solution joins respectively in the reactor 1 that 0.5g zinc powder 3 is housed in advance, add 7M hydrochloric acid 2mL this moment, cover bottle stopper rapidly, after treating 3min, take out test paper, the color that this white test paper presents is the most shallow brown of standard color comparison card.And on standard color comparison card with the content of sulfur dioxide value of the represented correspondence of this color mark 6.0mg/Kg.With dispose 9.0mg/Kg, 30.0mg/Kg, 60.0mg/Kg respectively with quadrat method, the 100.0mg/Kg standard solution is measured, the brown that the white test paper presents is deepened gradually, these colors are the brown series of standard color comparison card, and on the standard color comparison card below colour band, the pairing from shallow to deep content of sulfur dioxide value of color mark is labeled as respectively: 6.0mg/Kg, 9.0mg/Kg, 30.0mg/Kg, 60.0mg/Kg, 100.0mg/Kg).
Measure Application Example 1:
Use the kit of embodiment 1 to measure.Soak 15min with being soaked in the beaker that fills 50mL distilled water after the sample day lily 10g chopping, taking out the 5mL soak solution joins in the reactor 1 that 0.5g zinc powder 3 is housed in advance, add 7M hydrochloric acid 2mL this moment, cover reactor plug (being equipped with the rectangle slit that test paper is inserted on it) rapidly, the method that inserts of lead acetate paper 4, be that lead acetate paper 4 is invested on the plastic sheet, wetting back is injected the slit of reactor plug 2 in the lump together with plastic sheet, vertical hanging is in reactor 1, as shown in Figure 2.After treating 3min, take out test paper, the test paper of white becomes dark brown, with the color comparison on the standard color comparison card, dark colour is close on its color and the standard color comparison card, according to this color colorimetric calorific power is 100.0mg/Kg, determine concentration range that the sample day lily contains sulphuric dioxide be 100.0mg/Kg or and more than.
Embodiment 2:
20 of by-reaction devices are housed in the sulfur dioxide rapid test kit, in every by-reaction device the 1g zinc powder is housed, 1 of reactor plug, also has 7M hydrochloric acid 100mL in the kit, 100 of lead acetate papers, 1 of thin plastic sheet, the specification of thin plastic sheet is identical with test paper with shape, 1 of standard color comparison card, the brown of standard color comparison card is the colour system that is divided into 10 class from shallow to deep, and the sulfur dioxide concentration that corresponding respectively mark is measured is 6.0mg/Kg, 9.0mg/Kg, 15mg/Kg, 20mg/Kg, 30.0mg/Kg, 40mg/Kg, 50mg/Kg, 60.0mg/Kg, 80mg/Kg, 100.0mg/Kg.Other is with embodiment 1.
Measure Application Example 2:
Application Example 2 prepared kits are measured.Sample is pestered after 20g pulverizes, be put in the beaker that fills 50mL distilled water and soak 20min, take out the 10mL soak solution and join in the reactor that the 1.0g zinc powder is housed in advance, add 8M hydrochloric acid 2mL this moment, other test procedure is with measuring Application Example 1.After treating 3min, take out test paper, the test paper of white becomes filbert, with the color comparison on the standard color comparison card, light colour is close on its color and the standard color comparison card, according to this color colorimetric calorific power is 6.0mg/Kg, determine concentration that sample mushroom contains sulphuric dioxide be 6.0mg/Kg or and below.
Claims (6)
1. fast measuring sulphuric dioxide kit, it is characterized in that the box that it is made up of the reactor that zinc powder (3) are housed (1), the reactor plug (2) that has slit, 7-8M hydrochloric acid (5), lead acetate paper (4), thin plastic sheet, standard color comparison card, standard color comparison card is the colour atla of brown series, and this card minimum detectability is 6.0mg/Kg.
2. according to the described sulfur dioxide rapid test kit of claim 1, it is characterized in that being equipped with in the kit 5-20 by-reaction device (1), in every by-reaction device zinc powder is housed, the zinc powder quality is each aequum of measuring, be 0.5-2.0g, reactor plug (2) have the rectangle slit that runs through to communicate between two end faces up and down so that lead acetate paper (4) passes reactor plug (2) vertical hanging in reactor 1, the specification of thin plastic sheet is identical with test paper with shape.
3. according to the described sulfur dioxide rapid test kit of claim 1, it is characterized in that the interior zinc powder of reactor (1) (3) quality is 0.5g, hydrochloric acid (5) concentration is 7M.
4. according to the described sulfur dioxide rapid test kit of claim 1, the brown that it is characterized in that standard color comparison card is for being divided into 5-10 class from shallow to deep; And the sulfur dioxide concentration measured of corresponding respectively mark be 6.0mg/Kg to 100.0mg/Kg and more than.
5. according to the application of the described sulfur dioxide rapid test kit of claim 1, its feature is used to measure the content range of sulfur dioxide in food; Concrete assay method is to be soaked in 10-20min in the 50mL distilled water after testing sample 10-20g is pulverized, getting above-mentioned 5-10mL soak solution joins in the reactor (1) that 0.5-2.0g zinc powder (3) are housed, after this add 7-8M hydrochloric acid (5) 2-5mL, cover reactor plug (2) rapidly, wetting lead acetate paper (4) is inserted in the reactor (1), observe lead acetate paper (4) behind the 3min whether change color is arranged, if change color is arranged, just the color and the color on the standard color comparison card of lead acetate paper (4) are compared, select the close standard color comparison card value of color, be the concentration range of the contained sulphuric dioxide of testing sample.
6. according to the application of the described sulfur dioxide rapid test kit of claim 5, the method of inserting that it is characterized in that lead acetate paper is: lead acetate paper (4) is invested on the plastic sheet, inject the slit of reactor plug (2) after wetting in the lump together with plastic sheet, vertical hanging is in reactor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100163917A CN100480685C (en) | 2005-11-25 | 2005-11-25 | Sulfur dioxide rapid test kit and use thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100163917A CN100480685C (en) | 2005-11-25 | 2005-11-25 | Sulfur dioxide rapid test kit and use thereof |
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| CN1776408A true CN1776408A (en) | 2006-05-24 |
| CN100480685C CN100480685C (en) | 2009-04-22 |
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| CNB2005100163917A Expired - Fee Related CN100480685C (en) | 2005-11-25 | 2005-11-25 | Sulfur dioxide rapid test kit and use thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995405A (en) * | 2010-11-12 | 2011-03-30 | 辽宁省食品药品检验所 | Method for fast measuring sulphitation Chinese medicinal materials |
| CN102735797A (en) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | Method for detecting sulfur dioxide residue limit of traditional Chinese medicinal material or traditional Chinese medicinal decoction tablet |
| CN103630534A (en) * | 2013-11-28 | 2014-03-12 | 中山鼎晟生物科技有限公司 | Quick detection method for sulfur dioxide in food |
| CN103728298A (en) * | 2014-01-28 | 2014-04-16 | 黄石市食品药品检验所 | Quick quantity-limited detection method for detecting quantity of sulfur dioxide residual in traditional Chinese medicinal materials, decoction pieces of traditional Chinese medicinal materials, agricultural products and foods |
| CN103940811A (en) * | 2014-03-11 | 2014-07-23 | 康美药业股份有限公司 | Detection kit for residual quantity of sulfur dioxide, and preparation method and application thereof |
| CN104280375A (en) * | 2013-07-01 | 2015-01-14 | 厦门大学 | Rapid detection method for sulfur dioxide residue in tremella |
| CN105067610A (en) * | 2015-08-18 | 2015-11-18 | 陕西省食品药品检验所 | Sulfur dioxide detecting method based on Gutzeit method |
| CN105181690A (en) * | 2015-09-28 | 2015-12-23 | 北京福德安科技有限公司 | 12-channel micro-flow rapid colorimetric water quality detection device |
| CN105911050A (en) * | 2016-04-14 | 2016-08-31 | 梧州市产品质量检验所 | Method for determining residual amount of sulfur dioxide in Guiling jelly powder |
| CN110646422A (en) * | 2019-11-14 | 2020-01-03 | 徐州飞梦电子科技有限公司 | Unmanned aerial vehicle equipment for detecting and sampling sulfur content in air and using method thereof |
-
2005
- 2005-11-25 CN CNB2005100163917A patent/CN100480685C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995405A (en) * | 2010-11-12 | 2011-03-30 | 辽宁省食品药品检验所 | Method for fast measuring sulphitation Chinese medicinal materials |
| CN102735797B (en) * | 2011-07-19 | 2016-01-06 | 成都中医药大学 | The detection method of a kind of Chinese crude drug or sulfur dioxide contained in Chinese herbal pieces residual quantity limitation |
| CN102735797A (en) * | 2011-07-19 | 2012-10-17 | 成都中医药大学 | Method for detecting sulfur dioxide residue limit of traditional Chinese medicinal material or traditional Chinese medicinal decoction tablet |
| CN104280375A (en) * | 2013-07-01 | 2015-01-14 | 厦门大学 | Rapid detection method for sulfur dioxide residue in tremella |
| CN104280375B (en) * | 2013-07-01 | 2018-01-02 | 厦门大学 | Sulfur dioxide residue quick determination method in a kind of white fungus |
| CN103630534A (en) * | 2013-11-28 | 2014-03-12 | 中山鼎晟生物科技有限公司 | Quick detection method for sulfur dioxide in food |
| CN103728298A (en) * | 2014-01-28 | 2014-04-16 | 黄石市食品药品检验所 | Quick quantity-limited detection method for detecting quantity of sulfur dioxide residual in traditional Chinese medicinal materials, decoction pieces of traditional Chinese medicinal materials, agricultural products and foods |
| CN103940811A (en) * | 2014-03-11 | 2014-07-23 | 康美药业股份有限公司 | Detection kit for residual quantity of sulfur dioxide, and preparation method and application thereof |
| CN105067610A (en) * | 2015-08-18 | 2015-11-18 | 陕西省食品药品检验所 | Sulfur dioxide detecting method based on Gutzeit method |
| CN105181690A (en) * | 2015-09-28 | 2015-12-23 | 北京福德安科技有限公司 | 12-channel micro-flow rapid colorimetric water quality detection device |
| CN105181690B (en) * | 2015-09-28 | 2018-03-27 | 北京福德安科技有限公司 | A kind of quick colorimetric water quality detecting device of 12 passage miniflows |
| CN105911050A (en) * | 2016-04-14 | 2016-08-31 | 梧州市产品质量检验所 | Method for determining residual amount of sulfur dioxide in Guiling jelly powder |
| CN110646422A (en) * | 2019-11-14 | 2020-01-03 | 徐州飞梦电子科技有限公司 | Unmanned aerial vehicle equipment for detecting and sampling sulfur content in air and using method thereof |
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| CN100480685C (en) | 2009-04-22 |
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