CN109444129A - A kind of sodium formaldehyde sulfoxylate speed test paper and preparation method thereof - Google Patents
A kind of sodium formaldehyde sulfoxylate speed test paper and preparation method thereof Download PDFInfo
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- CN109444129A CN109444129A CN201811493625.0A CN201811493625A CN109444129A CN 109444129 A CN109444129 A CN 109444129A CN 201811493625 A CN201811493625 A CN 201811493625A CN 109444129 A CN109444129 A CN 109444129A
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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
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Abstract
The invention discloses a kind of sodium formaldehyde sulfoxylate speed test papers, including sample pad plus pool, acid test-paper, colour-development sheet, substrate, the sample pad is filter paper or blotting paper, the acidity test-paper is dried in vacuo after acid solution impregnates to be made, the colour-development sheet is dried in vacuo after the immersion of pararosaniline hydrochloridc class reagent solution and is made, and substrate is PVC thin slice or plastic tab.The present invention also accordingly discloses the preparation method of the sodium formaldehyde sulfoxylate speed test paper.Speed test paper of the invention makes simple, at low cost, high sensitivity, is applicable in the quick detection of sodium formaldehyde sulfoxylate in food, and the rapid screening detection of sodium formaldehyde sulfoxylate food is carried out suitable for law enforcement agency.
Description
Technical field
The invention belongs to rapid detection technical fields, and in particular to a kind of sodium formaldehyde sulfoxylate speed test paper and preparation method thereof.
Background technique
Sodium formaldehyde sulfoxylate (rongalite) is a kind of substance soluble easily in water, and at 60 DEG C or more begins to discharge toxic
Substance, when higher temperature, can release the substances such as formaldehyde and sulfur dioxide.Liver, kidney can be caused after human body intake sodium formaldehyde sulfoxylate
Certain damage, it is serious or even can carcinogenic or lopsided lesion.It prohibites in relevant advertisements and is added in food in China
It uses, but since it has good anti-corrosive fresh-keeping, guarantor's color effect, Partial Food manufacturer is still used in illegal addition.
The main method of existing detection sodium formaldehyde sulfoxylate (rongalite) has spectrophotometry, also there is quick detection in recent years
Kit (pipe) class product is used in screening detection, but spectrophotometry complex steps, and it is fast not to be suitable for law enforcement agency scene
Fast screening detection.Current detection kit is all detected just for the formaldehyde decomposited in sodium formaldehyde sulfoxylate mostly, and is ignored
Sulfur dioxide therein, leads to that it is easy to appear false positives, furthermore, the reagent appearance in kit is splashed, not readily portable.
Summary of the invention
It is an object of that present invention to provide a kind of sodium formaldehyde sulfoxylate speed test papers, and testing result is more scientific and reasonable, easy to operate, are convenient for
It carries, is suitable for law enforcement agency and is detected for rapid screening.
Technical solution of the present invention is as follows:
A kind of sodium formaldehyde sulfoxylate speed test paper, including sample pad plus pool, acid test-paper, colour-development sheet, substrate, the sample pad be
Filter paper or blotting paper, the acidity test-paper is dried in vacuo after acid solution impregnates to be made, and the colour-development sheet is through hydrochloric acid pair rose
Rare phenyl amines reagent solution is dried in vacuo after impregnating and is made, and substrate is PVC thin slice or plastic tab.
It may further be preferable that the acidity test-paper is chromatographic paper, filter paper or all-glass paper.
It may further be preferable that the colour-development sheet is chromatographic paper, filter paper or all-glass paper.
It may further be preferable that the acid solution is the hydrochloric acid or phosphoric acid solution of 1~6mol/L.
It may further be preferable that the mass percent of the pararosaniline hydrochloridc class reagent solution is 0.1~5%.
A method of sodium formaldehyde sulfoxylate speed test paper is prepared, is included the following steps:
Step 1: being configured to the acid solution that concentration is 1~6mol/L with hydrochloric acid or phosphoric acid；
Step 2: taking chromatographic paper, filter paper or all-glass paper, immerse in the resulting acid solution of step 1 after impregnating 8~15min and take
Out, length: 6~10mm is cut into after vacuum drying, wide: the test-paper of 4~8mm is pasted on base to get acid test-paper, by one end
On piece, the equivalent width of the width of substrate and acid test-paper；
Step 3: taking filter paper or blotting paper, piece cuts growth: 6~10mm, and wide: the test-paper of 4~8mm, one end are pasted on substrate
On, one end is covered on acid test-paper；
Step 4: taking that a small amount of water is added in 0.1~5g pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and is diluted with water to
100ml, filtering, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 10~20min and takes out,
Length: 8~12mm is cut into after vacuum drying, wide: the test-paper of 4~8mm is to get colour-development sheet；It is pasted on substrate, makes to develop the color
One end of piece is covered by acid test-paper.
It may further be preferable that the reagent is that analysis is pure.
It may further be preferable that vacuum drying temperature is 30~40 DEG C in the step 2.
It may further be preferable that vacuum drying temperature is 30~40 DEG C in the step 5.
Present invention pararosaniline hydrochloridc makees color developing agent, simultaneously using formaldehyde, sulfur dioxide and pararosaniline hydrochloridc
In the presence of can react and generate aubergine compound colour developing principle and be fabricated to the fast test paper of sodium formaldehyde sulfoxylate (rongalite).It uses
When with 3~6 drop pure water of dropper drop on sample application zone, on liquid chromatography(LC) to colour-development sheet, and colour-development sheet becomes existing again when yellow
A drop sample liquid is added dropwise on colour-development sheet, it is white with being hung in sample liquid if containing sodium formaldehyde sulfoxylate (rongalite) in sample
The increase of block (rongalite) content, colour-development sheet is gradually deepened to be aubergine, then colour-development sheet and standard color card are compared,
The detection to sodium formaldehyde sulfoxylate (rongalite) content is realized according to the depth of color.
The beneficial effects of the present invention are: fast test paper production is simple, easy to carry, testing result is more scientific and reasonable, uses
Easy to operate, safety and environmental protection carries out the rapid screening inspection of sodium formaldehyde sulfoxylate (rongalite) food suitable for law enforcement agency
It surveys.
Detailed description of the invention
Attached drawing 1 is schematic structural view of the invention；
In figure, 1~sample pad, 2~add pool, 3~acidity test-paper, 4~colour-development sheet, 5~substrate.
Specific embodiment
The present invention is described in further detail below:
A kind of sodium formaldehyde sulfoxylate speed test paper, including sample pad 1 plus pool 2, acid test-paper 3, colour-development sheet 4, substrate 5, the sample
Pad 1 is filter paper or blotting paper, and the acidity test-paper 3 be dried in vacuo obtained after acid solution impregnates, and the colour-development sheet 4 is through salt
Sour Pararosaniline class reagent solution is dried in vacuo after impregnating and is made, and substrate 5 is PVC thin slice or plastic tab.
It may further be preferable that the acidity test-paper 3 is chromatographic paper, filter paper or all-glass paper.
It may further be preferable that the colour-development sheet 4 is chromatographic paper, filter paper or all-glass paper.
It may further be preferable that the acid solution is the hydrochloric acid or phosphoric acid solution of 1~6mol/L.
It may further be preferable that the mass percent of the pararosaniline hydrochloridc class reagent solution is 0.1~5%.
Embodiment 1:
A method of sodium formaldehyde sulfoxylate speed test paper is prepared, is included the following steps:
Step 1: being configured to the acid solution that concentration is 1mol/L with hydrochloric acid or phosphoric acid；
Step 2: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting acid solution of step 1 after impregnating 8min and takes out,
Length is cut into after vacuum drying: 6mm, wide: one end is pasted on substrate by the test-paper of 4mm to get acid test-paper, substrate
Width and acid test-paper equivalent width；
Step 3: taking filter paper or blotting paper, piece cuts growth: 6mm, and wide: the test-paper of 4mm, one end are pasted on substrate, one end
It is covered on acid test-paper；
Step 4: taking that a small amount of water is added in 0.1 pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and be diluted with water to 100ml, mistake
Filter, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 10min and takes out, vacuum
Length is cut into after drying: 8mm, wide: the test-paper of 4mm is to get colour-development sheet；It is pasted on substrate, makes one end quilt of colour-development sheet
Acid test-paper covering.
The reagent is that analysis is pure.
In the step 2, vacuum drying temperature is 30 DEG C.
In the step 5, vacuum drying temperature is 30 DEG C.
Embodiment 2:
A method of sodium formaldehyde sulfoxylate speed test paper is prepared, is included the following steps:
Step 1: being configured to the acid solution that concentration is 3mol/L with hydrochloric acid or phosphoric acid；
Step 2: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting acid solution of step 1 after impregnating 8min and takes out,
Length is cut into after vacuum drying: 10mm, wide: one end is pasted on substrate by the test-paper of 4mm to get acid test-paper, substrate
Width and acid test-paper equivalent width；
Step 3: taking filter paper or blotting paper, piece cuts growth: 10mm, and wide: the test-paper of 4mm, one end are pasted on substrate, one end
It is covered on acid test-paper；
Step 4: taking that a small amount of water is added in 3g pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and be diluted with water to 100ml, mistake
Filter, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 10min and takes out, vacuum
Length is cut into after drying: 12mm, wide: the test-paper of 4mm is to get colour-development sheet；It is pasted on substrate, makes one end quilt of colour-development sheet
Acid test-paper covering.
The reagent is that analysis is pure.
In the step 2, vacuum drying temperature is 30 DEG C.
In the step 5, vacuum drying temperature is 40 DEG C.
Embodiment 3:
A method of sodium formaldehyde sulfoxylate speed test paper is prepared, is included the following steps:
Step 1: being configured to the acid solution that concentration is 3mol/L with hydrochloric acid or phosphoric acid；
Step 2: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting acid solution of step 1 after impregnating 15min and takes out,
Length is cut into after vacuum drying: 6mm, wide: one end is pasted on substrate by the test-paper of 8mm to get acid test-paper, substrate
Width and acid test-paper equivalent width；
Step 3: taking filter paper or blotting paper, piece cuts growth: 6mm, and wide: the test-paper of 8mm, one end are pasted on substrate, one end
It is covered on acid test-paper；
Step 4: taking that a small amount of water is added in 3g pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and be diluted with water to 100ml, mistake
Filter, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 15min and takes out, vacuum
Length is cut into after drying: 8mm, wide: the test-paper of 8mm is to get colour-development sheet；It is pasted on substrate, makes one end quilt of colour-development sheet
Acid test-paper covering.
The reagent is that analysis is pure.
In the step 2, vacuum drying temperature is 40 DEG C.
In the step 5, vacuum drying temperature is 40 DEG C.
Embodiment 4:
A method of sodium formaldehyde sulfoxylate speed test paper is prepared, is included the following steps:
Step 1: being configured to the acid solution that concentration is 6mol/L with hydrochloric acid or phosphoric acid；
Step 2: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting acid solution of step 1 after impregnating 15min and takes out,
Length is cut into after vacuum drying: 10mm, wide: one end is pasted on substrate by the test-paper of 8mm to get acid test-paper, substrate
Width and acid test-paper equivalent width；
Step 3: taking filter paper or blotting paper, piece cuts growth: 10mm, and wide: the test-paper of 8mm, one end are pasted on substrate, one end
It is covered on acid test-paper；
Step 4: taking that a small amount of water is added in 5g pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and be diluted with water to 100ml, mistake
Filter, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 20min and takes out, vacuum
Length is cut into after drying: 12mm, wide: the test-paper of 8mm is to get colour-development sheet；It is pasted on substrate, makes one end quilt of colour-development sheet
Acid test-paper covering.
The reagent is that analysis is pure.
In the step 2, vacuum drying temperature is 40 DEG C.
In the step 5, vacuum drying temperature is 40 DEG C.
The production of the standard color comparison card: (such as configuration concentration gradient is 0.05- to the concentration gradient of configuration series of standards liquid
0.1-0.25-0.5-1-1.5g/100g), the titer reaction solution that each gradient is taken by above-mentioned application method, with height after colour developing
Clear video camera records the color of each concentration, is printed the color of record by concentration forsequential color with high quality printer
It (only need to be by color in the centrifuge tube after reaction and this card when use to get colorimetric card on adhesive sticker or the preferable scraps of paper of brightness
Compare the content of rongalite in you can get it sample).
Claims (9)
1. a kind of sodium formaldehyde sulfoxylate speed test paper, including sample pad (1) plus pool (2), acid test-paper (3), colour-development sheet (4), substrate
(5), it is characterised in that: the sample pad (1) is filter paper or blotting paper, and the acidity test-paper (3) is after acid solution impregnates
Vacuum drying is made, and the colour-development sheet (4) is dried in vacuo after the immersion of pararosaniline hydrochloridc class reagent solution and is made, substrate
It (5) is PVC thin slice or plastic tab.
2. a kind of sodium formaldehyde sulfoxylate speed test paper according to claim 1, which is characterized in that the acidity test-paper (3) is color
Manuscript, filter paper or all-glass paper.
3. a kind of sodium formaldehyde sulfoxylate speed test paper according to claim 1, which is characterized in that the colour-development sheet (4) is chromatography
Paper, filter paper or all-glass paper.
4. a kind of sodium formaldehyde sulfoxylate speed test paper according to claim 1, which is characterized in that the acid solution is 1~6mol/
The hydrochloric acid or phosphoric acid solution of L.
5. a kind of sodium formaldehyde sulfoxylate speed test paper according to claim 1, which is characterized in that the pararosaniline hydrochloridc class examination
The mass percent of agent solution is 0.1~5%.
6. a kind of method for preparing sodium formaldehyde sulfoxylate speed test paper as described in claim 1, which comprises the steps of:
Step 1: being configured to the acid solution that concentration is 1~6mol/L with hydrochloric acid or phosphoric acid；
Step 2: taking chromatographic paper, filter paper or all-glass paper, immerse in the resulting acid solution of step 1 after impregnating 8~15min and take
Out, length: 6~10mm is cut into after vacuum drying, wide: the test-paper of 4~8mm pastes one end to get acid test-paper (3)
In on substrate (5), the equivalent width of the width of substrate (5) and acid test-paper (3)；
Step 3: taking filter paper or blotting paper, piece cuts growth: 6~10mm, and wide: the test-paper of 4~8mm, one end are pasted on substrate
(5) on, one end is covered on acid test-paper (3)；
Step 4: taking that a small amount of water is added in 0.1~5g pararosaniline hydrochloridc in mortar and ethyl alcohol grinds and is diluted with water to
100ml, filtering, takes filtrate spare；
Step 5: chromatographic paper, filter paper or all-glass paper are taken, immerses in the resulting filtrate of step 4 after impregnating 10~20min and takes out,
Length: 8~12mm is cut into after vacuum drying, wide: the test-paper of 4~8mm is to get colour-development sheet (4)；It is pasted on substrate (5),
Cover one end of colour-development sheet (4) by acid test-paper (3).
7. sodium formaldehyde sulfoxylate speed test paper preparation method as claimed in claim 6, which is characterized in that the reagent is that analysis is pure.
8. sodium formaldehyde sulfoxylate speed test paper preparation method as claimed in claim 6, which is characterized in that in the step 2, vacuum drying
Temperature be 30~40 DEG C.
9. sodium formaldehyde sulfoxylate speed test paper preparation method as claimed in claim 6, which is characterized in that in the step 5, vacuum drying
Temperature be 30~40 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811493625.0A CN109444129A (en) | 2019-01-31 | 2019-01-31 | A kind of sodium formaldehyde sulfoxylate speed test paper and preparation method thereof |
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| CN201811493625.0A CN109444129A (en) | 2019-01-31 | 2019-01-31 | A kind of sodium formaldehyde sulfoxylate speed test paper and preparation method thereof |
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Citations (6)
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|---|---|---|---|---|
| CN1936547A (en) * | 2005-09-22 | 2007-03-28 | 卢新 | Detection tube for detecting rongalite in food |
| CN1987434A (en) * | 2005-12-23 | 2007-06-27 | 哈尔滨市产品质量监督检验所 | Quick detecting technology for no public harm agricultural product market entrance |
| CN102213678A (en) * | 2010-04-07 | 2011-10-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Sulfite detection test paper and preparation method thereof |
| CN104730253A (en) * | 2015-03-20 | 2015-06-24 | 国家纳米科学中心 | Detection strip based on click chemistry, detection method and application |
| US20160069875A1 (en) * | 2007-06-08 | 2016-03-10 | The Furukawa Electric Co., Ltd. | Labelled Silica Nanoparticles for Immunochromatographic Reagent, Immunochromatographic Test Strip Using the Same, and Immunochromomatographic Fluorescence-Detecting System or Radiation-Detecting System |
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2019
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| CN1936547A (en) * | 2005-09-22 | 2007-03-28 | 卢新 | Detection tube for detecting rongalite in food |
| CN1987434A (en) * | 2005-12-23 | 2007-06-27 | 哈尔滨市产品质量监督检验所 | Quick detecting technology for no public harm agricultural product market entrance |
| US20160069875A1 (en) * | 2007-06-08 | 2016-03-10 | The Furukawa Electric Co., Ltd. | Labelled Silica Nanoparticles for Immunochromatographic Reagent, Immunochromatographic Test Strip Using the Same, and Immunochromomatographic Fluorescence-Detecting System or Radiation-Detecting System |
| CN102213678A (en) * | 2010-04-07 | 2011-10-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Sulfite detection test paper and preparation method thereof |
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Application publication date: 20190308 |