CN109738426A - Benzaldehyde detection method - Google Patents
Benzaldehyde detection method Download PDFInfo
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- CN109738426A CN109738426A CN201910143853.3A CN201910143853A CN109738426A CN 109738426 A CN109738426 A CN 109738426A CN 201910143853 A CN201910143853 A CN 201910143853A CN 109738426 A CN109738426 A CN 109738426A
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- benzaldehyde
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- detection method
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Abstract
The invention discloses a kind of benzaldehyde detection methods comprising following steps: step 1, and extraneous air is drawn into the first reaction tube by vacuum pump；Step 2 is passed through solution of sodium bisulfite in the first reaction tube；The color of step 3, solution of sodium bisulfite changes, and indicates to contain benzaldehyde in air；Extraneous air is drawn into the second reaction tube by step 4 by vacuum pump；Step 5 is passed through methanol aqueous solution in the second reaction tube；Step 6 calculates the content of benzaldehyde according to standard curve and by a computer.The present invention detects in production environment, prevents to leak, and improves safety.
Description
Technical field
The present invention relates to a kind of detection methods, more particularly to a kind of benzaldehyde detection method.
Background technique
Benzaldehyde is the organic compound formed after the hydrogen of benzene is replaced by aldehyde radical.Benzaldehyde be it is simplest, simultaneously be also
It is industrially most often the aromatic aldehyde used.It is colourless liquid at room temperature, has special almond scent.Benzaldehyde is bitter flat
Main component in peach oil extract can also be extracted from apricot, cherry, bay leaf, peach-pit and be obtained.Benzaldehyde is flammable, toxic,
Have irritation, therefore has certain harm in production environment.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of benzaldehyde detection methods, are examined in production environment
It surveys, prevents to leak, improve safety.
The present invention is to solve above-mentioned technical problem by following technical proposals: a kind of benzaldehyde detection method, special
Sign is comprising following steps:
Extraneous air is drawn into the first reaction tube by step 1 by vacuum pump；
Step 2 is passed through solution of sodium bisulfite in the first reaction tube；
The color of step 3, solution of sodium bisulfite changes, and indicates to contain benzaldehyde in air；
Extraneous air is drawn into the second reaction tube by step 4 by vacuum pump；
Step 5 is passed through methanol aqueous solution in the second reaction tube；
Step 6, the 20 μ L under selected chromatographic condition, obtains the chromatogram of standard solution, dense for vertical seat, test solution with peak area
Degree is that abscissa carries out linear regression, obtains the standard of benzaldehyde；0.45 μm of filtering with microporous membrane is obtained in selected 20 μ L of color
To chromatogram, the content of benzaldehyde is calculated according to standard curve and by a computer.
Preferably, the computer is connect with a display, and display is used to show the content of chromatogram, benzaldehyde.
Preferably, the upper end of first reaction tube is provided with inlet and air inlet.
Preferably, the upper end of second reaction tube is provided with inlet and air inlet.
Preferably, the computer is connect with a memory.
The positive effect of the present invention is that: the present invention detects in production environment, prevents to leak, and improves
Safety.
Specific embodiment
Present pre-ferred embodiments are given below, in order to explain the technical scheme of the invention in detail.
Detection method includes the following steps for benzaldehyde of the present invention:
Extraneous air is drawn into the first reaction tube by step 1 by vacuum pump；
Step 2 is passed through solution of sodium bisulfite in the first reaction tube；
The color of step 3, solution of sodium bisulfite changes, and indicates to contain benzaldehyde in air；
Extraneous air is drawn into the second reaction tube by step 4 by vacuum pump；
Step 5 is passed through methanol aqueous solution in the second reaction tube；
Step 6, the 20 μ L under selected chromatographic condition, obtains the chromatogram of standard solution, dense for vertical seat, test solution with peak area
Degree is that abscissa carries out linear regression, obtains the standard of benzaldehyde；0.45 μm of filtering with microporous membrane is obtained in selected 20 μ L of color
To chromatogram, the content of benzaldehyde is calculated according to standard curve and by a computer.
Computer is connect with a display, and display is for showing the information such as the content of chromatogram, benzaldehyde.
The upper end of first reaction tube is provided with inlet and air inlet so that it is convenient to each lead into air and sulfurous
Sour hydrogen sodium solution.
The upper end of second reaction tube is provided with inlet and air inlet so that it is convenient to each lead into air and methanol
Aqueous solution.
Computer is connect with a memory, can save the information such as the content of chromatogram, benzaldehyde in this way.
Particular embodiments described above, the technical issues of to solution of the invention, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to
The present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (5)
1. a kind of benzaldehyde detection method, which is characterized in that itself the following steps are included:
Extraneous air is drawn into the first reaction tube by step 1 by vacuum pump；
Step 2 is passed through solution of sodium bisulfite in the first reaction tube；
The color of step 3, solution of sodium bisulfite changes, and indicates to contain benzaldehyde in air；
Extraneous air is drawn into the second reaction tube by step 4 by vacuum pump；
Step 5 is passed through methanol aqueous solution in the second reaction tube；
Step 6, the 20 μ L under selected chromatographic condition, obtains the chromatogram of standard solution, dense for vertical seat, test solution with peak area
Degree is that abscissa carries out linear regression, obtains the standard of benzaldehyde；0.45 μm of filtering with microporous membrane is obtained in selected 20 μ L of color
To chromatogram, the content of benzaldehyde is calculated according to standard curve and by a computer.
2. benzaldehyde detection method as described in claim 1, which is characterized in that the computer is connect with a display,
Display is used to show the content of chromatogram, benzaldehyde.
3. benzaldehyde detection method as described in claim 1, which is characterized in that the upper end of first reaction tube is provided with
Inlet and air inlet.
4. benzaldehyde detection method as described in claim 1, which is characterized in that the upper end of second reaction tube is provided with
Inlet and air inlet.
5. benzaldehyde detection method as described in claim 1, which is characterized in that the computer is connect with a memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910143853.3A CN109738426A (en) | 2019-02-27 | 2019-02-27 | Benzaldehyde detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910143853.3A CN109738426A (en) | 2019-02-27 | 2019-02-27 | Benzaldehyde detection method |
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| CN109738426A true CN109738426A (en) | 2019-05-10 |
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| CN201910143853.3A Pending CN109738426A (en) | 2019-02-27 | 2019-02-27 | Benzaldehyde detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707653A (en) * | 2020-05-15 | 2020-09-25 | 上海应用技术大学 | Method for rapidly detecting sulfur dioxide in tremella on site and sampling paper chip |
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| CN101187654A (en) * | 2007-12-13 | 2008-05-28 | 中国石油兰州石油化工公司 | Analysis method for oxidized liquid and product from paracresol catalytic oxidized synthesis for p-hydroxybenzaldehyde |
| CN102329235A (en) * | 2011-06-24 | 2012-01-25 | 灌南伊斯特化工有限公司 | Production process of p-nitrobenzaldehyde |
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| CN109665477A (en) * | 2019-02-27 | 2019-04-23 | 江苏顺丰化工有限公司 | The packaging process of benzaldehyde |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101187654A (en) * | 2007-12-13 | 2008-05-28 | 中国石油兰州石油化工公司 | Analysis method for oxidized liquid and product from paracresol catalytic oxidized synthesis for p-hydroxybenzaldehyde |
| WO2012023138A2 (en) * | 2010-08-18 | 2012-02-23 | Technion Research And Development Foundation Ltd. | Volatile organic compounds for detecting cell dysplasia and genetic alterations associated with lung cancer |
| CN102329235A (en) * | 2011-06-24 | 2012-01-25 | 灌南伊斯特化工有限公司 | Production process of p-nitrobenzaldehyde |
| CN103387510A (en) * | 2013-08-08 | 2013-11-13 | 苏州永健生物医药有限公司 | Synthesis method of beta-amino-alpha-hydroxycyclohexyl butyl aluminum hydrochloride |
| CN104458722A (en) * | 2014-11-28 | 2015-03-25 | 苏州东辰林达检测技术有限公司 | Detection reagent for formaldehyde in air and detection method of detection reagent |
| CN109761773A (en) * | 2019-01-23 | 2019-05-17 | 广西大学 | A kind of preparation method of benzaldehyde |
| CN109665477A (en) * | 2019-02-27 | 2019-04-23 | 江苏顺丰化工有限公司 | The packaging process of benzaldehyde |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707653A (en) * | 2020-05-15 | 2020-09-25 | 上海应用技术大学 | Method for rapidly detecting sulfur dioxide in tremella on site and sampling paper chip |
| CN111707653B (en) * | 2020-05-15 | 2023-02-07 | 上海应用技术大学 | Method for rapidly detecting sulfur dioxide in tremella on site and sampling paper chip |
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Application publication date: 20190510 |