CN105445397A - Improved formaldehyde detection method - Google Patents
Improved formaldehyde detection method Download PDFInfo
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- CN105445397A CN105445397A CN201510997776.XA CN201510997776A CN105445397A CN 105445397 A CN105445397 A CN 105445397A CN 201510997776 A CN201510997776 A CN 201510997776A CN 105445397 A CN105445397 A CN 105445397A
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- solution
- container
- formaldehyde
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- liquid chromatograph
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/027—Liquid chromatography
Abstract
The invention discloses an improved formaldehyde detection method, comprising the following steps: collecting 5ml of an air sample by using an air sampler, and introducing the air sample into a container containing prepared hydroxyhydroquinone; performing quantitative analysis by adopting a micro pH meter; then adding hydroxyethylidenediphosphonic acid solution, covering the container for uniform shaking, and sealing the container; placing the container in a pretreated phenylboronic acid column, and performing flushing by sequentially using 0.25mol/l ammonium acetate and methanol solution; removing flushing fluid, collecting the solution in the phenylboronic acid column, and performingcentrifugation concentration drying on the solution at 35-45 DEG C; performing extraction with chloroform, taking upper layer solution, filtering a water layer, and standing for 20-30 minutes; and performing detection by adopting a liquid chromatograph to obtain a result. According to the method disclosed by the invention, the labor intensity is reduced, chemicals are salved, time is shortened, the result of a detection experiment meets analysis requirement of samples, and a purpose of rapid detection is achieved; and artificial operation is not needed anymore, a field test saves time and labor, and the test result is more accurate.
Description
Technical field
The present invention relates to a kind of detection method, especially relate to a kind of Analysis Methods for Formaldehyde of improvement, belong to Environmental security detection field.
Background technology
Finishings a large amount of now, the use of ornament materials, make indoor air pollution more and more serious, the harm that wherein will count formaldehyde is maximum, formaldehyde is magma poisonous substance, energy and protein bound, after sucking high-concentration formaldehyde, there will be the serious stimulation of respiratory tract and oedema, eye shouting pain, headache, also bronchial astehma can occur, long-term inhaled formaldehyde can be carcinogenic, brings out leukaemia.In the middle of daily life, formaldehyde is present in the material such as decoration and furniture of numerous species, in use formaldehyde can come out at leisure from these materials, it is almost tasteless again when concentration is low, often sucking a small amount of formaldehyde unconsciously, slow poisoning can be caused, therefore, people often should test the air quality of oneself living environment, in case harmful gas brings injury.
Summary of the invention
For the deficiency that prior art exists, technical matters to be solved by this invention is, a kind of Analysis Methods for Formaldehyde of improvement is provided, can the on-the-spot content of formaldehyde fast, accurately detected in air, result accuracy and with a high credibility, test duration is short, method of testing is simple, and with low cost, handling safety.
For solving the problems of the technologies described above, the technical scheme that the present invention takes is, a kind of Analysis Methods for Formaldehyde of improvement, comprises the following steps:
(1) use air sampler to take air sample 5ml, lead to and be equipped with in the container of the benzenetriol prepared;
(2) miniature pH meter is adopted to carry out quantitative test;
(3) add HEDP solution again, add a cover and shake up sealing;
(4) pretreated phenyl boric acid post is placed in, successively with ammonium acetate and the methanol solution flushing of 0.25mol/l;
(5) discard washing fluid, the solution centrifugal concentrating under 35-45 degree collected in phenyl boric acid post volatilizes;
(6) with chloroform extraction, get upper solution, water layer is filtered, leave standstill 20-30min;
(7) adopt liquid chromatograph to detect can obtain a result.
Optimize, the Analysis Methods for Formaldehyde of above-mentioned improvement, the temperature of the chromatographic column that the liquid chromatograph in its step (7) detects is 25 degree, and mobile phase is water and acetonitrile, and specification is 150mmX4.2mm.
Method of the present invention reduces labour intensity, has saved medicine, has shortened in time, and test experience result meets the analysis requirement of sample, reaches the object detected fast; Without the need to again by artificial computing, on-the-spot test is time saving and energy saving, and test result is more accurate.
Embodiment
Embodiment 1
The present invention is a kind of Analysis Methods for Formaldehyde of improvement, comprises the following steps: that (1) uses air sampler to take air sample 5ml, leads to and be equipped with in the container of the benzenetriol prepared;
(2) miniature pH meter is adopted to carry out quantitative test; (3) add HEDP solution again, add a cover and shake up sealing;
(4) pretreated phenyl boric acid post is placed in, successively with ammonium acetate and the methanol solution flushing of 0.25mol/l;
(5) discard washing fluid, the solution centrifugal concentrating under 35 degree collected in phenyl boric acid post volatilizes;
(6) with chloroform extraction, get upper solution, water layer is filtered, leave standstill 20min;
(7) adopt liquid chromatograph to detect can obtain a result.
The temperature of the chromatographic column that the liquid chromatograph in step (7) detects is 25 degree, and mobile phase is water and acetonitrile, and specification is 150mmX4.2mm.
Embodiment 2
The present invention is a kind of Analysis Methods for Formaldehyde of improvement, comprises the following steps: that (1) uses air sampler to take air sample 5ml, leads to and be equipped with in the container of the benzenetriol prepared;
(2) miniature pH meter is adopted to carry out quantitative test; (3) add HEDP solution again, add a cover and shake up sealing;
(4) pretreated phenyl boric acid post is placed in, successively with ammonium acetate and the methanol solution flushing of 0.25mol/l;
(5) discard washing fluid, the solution centrifugal concentrating under 45 degree collected in phenyl boric acid post volatilizes;
(6) with chloroform extraction, get upper solution, water layer is filtered, leave standstill 30min;
(7) adopt liquid chromatograph to detect can obtain a result.
The temperature of the chromatographic column that the liquid chromatograph in step (7) detects is 25 degree, and mobile phase is water and acetonitrile, and specification is 150mmX4.2mm.
Embodiment 3
The present invention is a kind of Analysis Methods for Formaldehyde of improvement, comprises the following steps: that (1) uses air sampler to take air sample 5ml, leads to and be equipped with in the container of the benzenetriol prepared;
(2) miniature pH meter is adopted to carry out quantitative test; (3) add HEDP solution again, add a cover and shake up sealing;
(4) pretreated phenyl boric acid post is placed in, successively with ammonium acetate and the methanol solution flushing of 0.25mol/l;
(5) discard washing fluid, the solution centrifugal concentrating under 38 degree collected in phenyl boric acid post volatilizes;
(6) with chloroform extraction, get upper solution, water layer is filtered, leave standstill 25min;
(7) adopt liquid chromatograph to detect can obtain a result.
The temperature of the chromatographic column that the liquid chromatograph in step (7) detects is 25 degree, and mobile phase is water and acetonitrile, and specification is 150mmX4.2mm.Method of the present invention reduces labour intensity, has saved medicine, has shortened in time, and test experience result meets the analysis requirement of sample, reaches the object detected fast; Without the need to again by artificial computing, on-the-spot test is time saving and energy saving, and test result is more accurate.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited to above-mentioned citing; those skilled in the art; in essential scope of the present invention, the change made, remodeling, interpolation or replacement, all should belong to protection scope of the present invention.
Claims (2)
1. the Analysis Methods for Formaldehyde improved, comprises the following steps:
(1) use air sampler to take air sample 5ml, lead to and be equipped with in the container of the benzenetriol prepared;
(2) miniature pH meter is adopted to carry out quantitative test;
(3) add HEDP solution again, add a cover and shake up sealing;
(4) pretreated phenyl boric acid post is placed in, successively with ammonium acetate and the methanol solution flushing of 0.25mol/l;
(5) discard washing fluid, the solution centrifugal concentrating under 35-45 degree collected in phenyl boric acid post volatilizes;
(6) with chloroform extraction, get upper solution, water layer is filtered, leave standstill 20-30min;
(7) adopt liquid chromatograph to detect can obtain a result.
2. the Analysis Methods for Formaldehyde of improvement according to claim 1, is characterized in that: the temperature of the chromatographic column that the liquid chromatograph in described step (7) detects is 25 degree, and mobile phase is water and acetonitrile, and specification is 150mmX4.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997776.XA CN105445397A (en) | 2015-12-28 | 2015-12-28 | Improved formaldehyde detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997776.XA CN105445397A (en) | 2015-12-28 | 2015-12-28 | Improved formaldehyde detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105445397A true CN105445397A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510997776.XA Pending CN105445397A (en) | 2015-12-28 | 2015-12-28 | Improved formaldehyde detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105445397A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076321A (en) * | 2012-11-26 | 2013-05-01 | 江苏中烟工业有限责任公司徐州卷烟厂 | Method for detecting formaldehyde in water-based adhesive used for cigarette by continuous flow analyzer |
-
2015
- 2015-12-28 CN CN201510997776.XA patent/CN105445397A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076321A (en) * | 2012-11-26 | 2013-05-01 | 江苏中烟工业有限责任公司徐州卷烟厂 | Method for detecting formaldehyde in water-based adhesive used for cigarette by continuous flow analyzer |
Non-Patent Citations (3)
| Title |
|---|
| N. GAYATHRI等: "Determination of Formaldehyde in Effluents of Electroless Plating Baths", 《METAL FINISHING》 * |
| N. GAYATHRI等: "Spectrophotometric Determination of Formaldehyde", 《ANALYTICAL LETTERS》 * |
| 刘云春: "苯硼酸功能化整体柱的制备、应用及非常规作用机理研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Application publication date: 20160330 |
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