CN104374770A - Kit for measuring formaldehyde in air - Google Patents
Kit for measuring formaldehyde in air Download PDFInfo
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- CN104374770A CN104374770A CN201410652367.1A CN201410652367A CN104374770A CN 104374770 A CN104374770 A CN 104374770A CN 201410652367 A CN201410652367 A CN 201410652367A CN 104374770 A CN104374770 A CN 104374770A
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Abstract
The invention discloses a kit for measuring formaldehyde in air. The kit is composed of a support containing a testing agent, a color developing agent and a colorimetric card, wherein the support containing the testing agent is prepared from the following raw materials in parts by weight: 12-24 parts of formic acid, 2-8 parts of citric acid, 1-5 parts of fuchsine, and 5-10 parts of 4-amino-3-hydrazino-5-mercapto-1, 2, 4-triazole solution. The kit for measuring the formaldehyde in air is short in detection time, sensitive in reaction and high in accuracy rate.
Description
Technical field
The present invention relates to a kind of detection kit, particularly relate to a kind of mensuration formaldehyde in air kit.
Background technology
Formaldehyde is one of main room atmosphere pollution in modern day life, and on China's toxic chemical list, formaldehyde is in second.Formaldehyde in air will produce harm to the respiratory tract of humans and animals when exceeding certain content.Formaldehyde source in air mainly comprises: the paint such as all kinds of phenolic resin glue wood-based plates of the ornament materials such as skirting, ceiling etc.
The national standard detection method of formaldehyde comprises chemical method and instrumental method.Chemical method (spectrophotometric method) mainly contains phenol reagent process, acetylacetone method, off-color acid method, hydrochloric para-rosaniline method etc.Instrumental method mainly comprises gas chromatography, liquid phase chromatography, the chromatography of ions, Single Sweep Polarographic Determination method etc.
Existing air formaldehyde detection method is divided into 3 classes substantially, and one is instrumental method, and instrument is visible spectrophotometer or gas chromatograph, and when doing air formaldehyde and detecting, sample is adopted back at test in laboratory by specialty lab technician, operation more complicated.Two is that air formaldehyde is tested oneself box, and adsorbent is positioned in a capsule by the method, uses water-soluble solution during use, after being then exposed to space to be measured a period of time, adding developer and generates coloring matter, compare determine that formaldehyde in air content is how many with colour atla.Low, the easy-operating advantage of this easy detection means cost.At present, the length consuming time of formaldehyde detection reagent kit, accuracy rate is low, has better kit yet-to-be developed to use.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of mensuration formaldehyde in air kit, usage is simple, measures accurately.
For solving prior art problem, the technical scheme that the present invention takes is:
A kind of mensuration formaldehyde in air kit, form by containing the stilt of test agent, developer and colorimetric card, the described stilt containing test agent comprises the following raw material counted by weight: formic acid 12-24 part, citric acid 2-8 part, pinkish red 1-5 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 5-10 part.
As measuring the preferred of formaldehyde in air kit, the described stilt containing test agent comprises the following raw material counted by weight: formic acid 18-20 part, citric acid 4-6 part, pinkish red 2-4 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 6-8 part.
As measuring the preferred of formaldehyde in air kit, the described stilt containing test agent comprises the following raw material counted by weight: 19 parts, formic acid, citric acid 5 parts, pinkish red 3 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 7 parts.
As measuring the preferred of formaldehyde in air kit, above support is nonwoven fabrics or porous ceramic plate.
As measuring the preferred of formaldehyde in air kit, the solute of described developer is ammonium ferric sulfate, and solvent is water.
As measuring the preferred of formaldehyde in air kit, the mass volume ratio of described ammonium ferric sulfate and water is 0.6%-0.8%.
As measuring the preferred of formaldehyde in air kit, the preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 30-40 DEG C, obtaining mixed liquor for subsequent use;
Step 2, is immersed in 4-8 minute in mixed liquor, then dries by stilt.
beneficial effect
Formaldehyde formulations box of the present invention is practical and convenient, consuming time short, and detect the rate of accuracy reached of formaldehyde to more than 95%, long shelf-life, cost is low, has a good application prospect.
Embodiment
embodiment 1
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 12 parts, formic acid, citric acid 2 parts, pinkish red 1 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 5 parts, wherein stilt is nonwoven fabrics, the solute of developer is ammonium ferric sulfate, and solvent is water, and both mass volume ratios are 0.6%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 30 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 4 minutes, then to dry by stilt.
embodiment 2
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 18 parts, formic acid, citric acid 4 parts, pinkish red 2 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 6 parts, wherein stilt is porous ceramic plate, the solute of developer is ammonium ferric sulfate, and solvent is water, and the mass volume ratio of ammonium ferric sulfate and water is 0.7%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 32 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 5 minutes, then to dry by stilt.
embodiment 3
A kind of mensuration formaldehyde in air kit, is made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 20 parts, formic acid, citric acid 6 parts, pinkish red 4 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 8 parts, wherein, above support is nonwoven fabrics or porous ceramic plate, and the solute of developer is ammonium ferric sulfate, solvent is water, and both mass volume ratios are 0.8%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 38 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 7 minutes, then to dry by stilt.
embodiment 4
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 24 parts, formic acid, citric acid 8 parts, pinkish red 5 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 10 parts, wherein stilt is nonwoven fabrics, the solute of developer is ammonium ferric sulfate, and solvent is water, and both mass volume ratios are 0.8%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 40 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 8 minutes, then to dry by stilt.
embodiment 5
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 19 parts, formic acid, citric acid 5 parts, pinkish red 3 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 7 parts, wherein stilt is nonwoven fabrics, the solute of developer is ammonium ferric sulfate, and solvent is water, and both mass volume ratios are 0.7%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 38 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 7 minutes, then to dry by stilt.
comparative example 1
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: citric acid 2 parts, pinkish red 1 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 5 parts, wherein stilt is nonwoven fabrics, and the solute of developer is ammonium ferric sulfate, solvent is water, and both mass volume ratios are 0.6%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 30 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 4 minutes, then to dry by stilt.
comparative example 2
A kind of mensuration formaldehyde in air kit, be made up of stilt, developer and colorimetric card, containing the following raw material counted by weight on above support: 12 parts, formic acid, pinkish red 1 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 5 parts, wherein stilt is nonwoven fabrics, and the solute of developer is ammonium ferric sulfate, solvent is water, and both mass volume ratios are 0.6%.
The preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 30 DEG C, obtaining mixed liquor for subsequent use;
Step 2, to be immersed in mixed liquor 4 minutes, then to dry by stilt.
comparative example 3
Existing mensuration formaldehyde formulations box.
performance test
Kit of the present invention, comparative example 1-2 and existing kit are detected, lists the data obtained in following table.
As can be seen from the upper data of table, the synergy of formic acid and citric acid, improves the accuracy rate of kit, shortens developing time, and kit of the present invention is better than available reagent box on Detection results, is worth suitability for industrialized production.
Claims (7)
1. one kind measures formaldehyde in air kit, form by containing the stilt of test agent, developer and colorimetric card, it is characterized in that: the described stilt containing test agent comprises the following raw material counted by weight: formic acid 12-24 part, citric acid 2-8 part, pinkish red 1-5 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 5-10 part.
2. mensuration formaldehyde in air kit according to claim 1, it is characterized in that, the described stilt containing test agent comprises the following raw material counted by weight: formic acid 18-20 part, citric acid 4-6 part, pinkish red 2-4 part, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 6-8 part.
3. mensuration formaldehyde in air kit according to claim 1, is characterized in that: containing the stilt of test agent comprising the following raw material counted by weight: 19 parts, formic acid, citric acid 5 parts, pinkish red 3 parts, 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution 7 parts.
4. mensuration formaldehyde in air kit according to claim 1, is characterized in that: above support is nonwoven fabrics or porous ceramic plate.
5. mensuration formaldehyde in air kit according to claim 1, is characterized in that: the solute of described developer is ammonium ferric sulfate, and solvent is water.
6. mensuration formaldehyde in air kit according to claim 5, is characterized in that: the mass volume ratio of described ammonium ferric sulfate and water is 0.6%-0.8%.
7. mensuration formaldehyde in air kit according to claim 1, is characterized in that, the preparation method of the described stilt containing test agent, comprises the following steps:
Step 1, takes formic acid, citric acid, pinkish red, after the mixing of 4-amido-3-callosity base-5-mercapto-1,2,4-triazole solution, stirs and is heated to 30-40 DEG C, obtaining mixed liquor for subsequent use;
Step 2, is immersed in 4-8 minute in mixed liquor, then dries by stilt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652367.1A CN104374770A (en) | 2014-11-18 | 2014-11-18 | Kit for measuring formaldehyde in air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652367.1A CN104374770A (en) | 2014-11-18 | 2014-11-18 | Kit for measuring formaldehyde in air |
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| Publication Number | Publication Date |
|---|---|
| CN104374770A true CN104374770A (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410652367.1A Pending CN104374770A (en) | 2014-11-18 | 2014-11-18 | Kit for measuring formaldehyde in air |
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| CN (1) | CN104374770A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770925A (en) * | 2016-12-14 | 2017-05-31 | 蔡璇 | A kind of food formaldehyde quick detection reagent |
| CN107340289A (en) * | 2017-06-28 | 2017-11-10 | 防城港市质量技术监督局 | A kind of formaldehyde determination kit |
| CN107389670A (en) * | 2017-06-28 | 2017-11-24 | 防城港市质量技术监督局 | A kind of kit for determining formaldehyde in air |
-
2014
- 2014-11-18 CN CN201410652367.1A patent/CN104374770A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770925A (en) * | 2016-12-14 | 2017-05-31 | 蔡璇 | A kind of food formaldehyde quick detection reagent |
| CN107340289A (en) * | 2017-06-28 | 2017-11-10 | 防城港市质量技术监督局 | A kind of formaldehyde determination kit |
| CN107389670A (en) * | 2017-06-28 | 2017-11-24 | 防城港市质量技术监督局 | A kind of kit for determining formaldehyde in air |
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