CN102426164A - Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation - Google Patents
Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation Download PDFInfo
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- CN102426164A CN102426164A CN2011102414544A CN201110241454A CN102426164A CN 102426164 A CN102426164 A CN 102426164A CN 2011102414544 A CN2011102414544 A CN 2011102414544A CN 201110241454 A CN201110241454 A CN 201110241454A CN 102426164 A CN102426164 A CN 102426164A
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Abstract
The present invention discloses a method for collecting and detecting a material decomposition product or a material transformation product under strong laser irradiation. The sample tube used in the method comprises a stainless steel sample tube and two quartz end covers covering both ends of the stainless steel sample tube. The positions between the quartz end covers and the stainless steel sample tube are sealed by sealing rings. The stainless steel sample tube is provided with a quartz window and a deflation hole with a vacuum valve. A metal sample holder is arranged inside the stainless steel sample tube. During the use process, the sample is placed on the metal sample holder, the stainless steel sample tube is sealed and vacuumized, the strong laser penetrates the quartz end cover, and irradiates on the sample until the sample is decomposed or transformed, and then the product is directly subjected to in situ detection by using a confocal Raman spectrometer. According to the method of the present invention, the generation, the collection and the detection of the decomposition product or the transformation product are combined into the integration, the decomposition product or the transformation product can be subjected to the non-destructive in situ measurement almost without the sample preparation process.
Description
Technical field
The present invention relates to light laser irradiation species analysis field down, relate in particular to a kind of vacuum tube that utilizes quartz window collect the light laser irradiation down substance decomposition with transform afterproduct and utilize copolymerization Jiao Raman spectrometer product directly to be carried out the method for in situ detection.
Background technology
Along with the range of application of light laser in special trade enlarges; People to the decomposition of material under the light laser with transform attention rate and constantly increase, the method that the product of substance decomposition and conversion under the light laser was collected and detected to research how has become a technical barrier that needs to be resolved hurrily.
Since under the light laser substance decomposition with transform afterproduct mostly with gas or contain the aerocolloidal form of molecule and exist, this make product collection and detect very difficulty.Conventional sample collection mostly uses dissolving or injection method to be equipped with appearance; Utilize chromatogram or mass spectrum to detect again; But wherein there are complex process, poor controllability, are prone to produce problems such as subsidiary reaction, conditional request harshness, seriously restricted actual detection and application.
Summary of the invention
Goal of the invention: in order to overcome the deficiency that exists in the prior art, the present invention provide a kind of vacuum tube that utilizes quartz window collect the light laser irradiation down substance decomposition with transform afterproduct and utilize the burnt Raman spectrometer of copolymerization product directly to be carried out the method for in situ detection.
Technical scheme: for realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
The collection and the detection method of substance decomposition or converted product under a kind of light laser irradiation; The sample hose that adopts in the method comprises the stainless steel sample hose and covers two quartzy end caps at stainless steel sample hose two ends, between quartzy end cap and stainless steel sample hose, seals through O-ring seal; On the stainless steel sample hose, be provided with quartz window and the aspirating hole that has vacuum valve, in the stainless steel sample hose, be provided with the metal sample frame; This method comprises the steps:
(1) sample is placed on the metal sample frame;
(2) use quartzy end cap to cover the two ends of stainless steel sample hose, and pass through the O-ring seal sealing; Utilize vacuum pump through aspirating hole with after being extracted into needed vacuum state in the stainless steel sample hose, close vacuum valve;
(3) make the quartzy end cap incident of light laser, and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose from stainless steel sample Guan Yiduan;
(4) the long focus objective lens that utilizes the burnt Raman spectrometer of copolymerization to be equipped with focuses on exciting light in the stainless steel sample hose through quartz window; The Raman signal that it excited is collected by long focus objective lens again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Beneficial effect: the collection and the detection method of substance decomposition or converted product under a kind of light laser irradiation provided by the invention; Generation, collection and the detection of decomposition or converted product are integrated; Need sample making course hardly; Just can carry out the non-destructive in site measurement, and the sample hose that adopts cleaning is easy, can effectively avoid testing residual influence to experiment measuring to decomposing and transforming afterproduct.
Description of drawings
Fig. 1 is the structural representation of the sample hose of employing of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done explanation further.
Be illustrated in figure 1 as a kind of light laser irradiation substance decomposition or the collection of converted product and the sample hose that detection method adopts down; Comprise stainless steel sample hose 1 and cover two quartzy end caps 4 at stainless steel sample hose 1 two ends, between quartzy end cap 4 and stainless steel sample hose 1 through O-ring seal 8 sealings; On stainless steel sample hose 1, be provided with quartz window 9 and the aspirating hole 6 that has vacuum valve 7, in stainless steel sample hose 1, be provided with metal sample frame 5; This method comprises the steps:
(1) sample is placed on the metal sample frame 5;
(2) use quartzy end cap 4 to cover the two ends of stainless steel sample hose 1, and pass through O-ring seal 8 sealings; Utilize vacuum pump through aspirating hole 6 with after being extracted into needed vacuum state in the stainless steel sample hose 1, close vacuum valve 7;
(3) make quartzy end cap 4 incidents of light laser 2, and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose 1 from stainless steel sample pipe 1 one ends;
(4) the long focus objective lens 3 that utilizes the burnt Raman spectrometer of copolymerization to be equipped with focuses on exciting light in the stainless steel sample hose 1 through quartz window 9; The Raman signal that it excited is collected by long focus objective lens 3 again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Following structure example describes this inventive method.
(1) polystyrene is placed on the metal sample frame 5;
(2) use quartzy end cap 4 to cover the two ends of stainless steel sample hose 1, and pass through O-ring seal 8 sealings; Utilize vacuum pump through aspirating hole 6 with being extracted into 10 in the stainless steel sample hose 1
-6Behind the vacuum state of Pa, close vacuum valve 7;
(3) make quartzy end cap 4 incidents of light laser 2, and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose 1 from stainless steel sample pipe 1 one ends;
(4) the 50 double-length focus objective lens 3 that utilize the burnt Raman spectrometer of copolymerization to be equipped with focus on exciting light (wavelength is 514nm) in the stainless steel sample hose 1 through quartz window 9; The Raman signal that it excited is collected by long focus objective lens 3 again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Experimental result: obtained polystyrene decompose and transform after the in-situ Raman characteristic spectrum of product.
(1) ABS plastic is placed on the metal sample frame 5;
(2) use quartzy end cap 4 to cover the two ends of stainless steel sample hose 1, and pass through O-ring seal 8 sealings; Utilize vacuum pump through aspirating hole 6 with being extracted into 10 in the stainless steel sample hose 1
-6Behind the vacuum state of Pa, close vacuum valve 7;
(3) make quartzy end cap 4 incidents of light laser 2, and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose 1 from stainless steel sample pipe 1 one ends;
(4) the 50 double-length focus objective lens 3 that utilize the burnt Raman spectrometer of copolymerization to be equipped with focus on exciting light (wavelength is 514nm) in the stainless steel sample hose 1 through quartz window 9; The Raman signal that it excited is collected by long focus objective lens 3 again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Experimental result: obtained ABS plastic decompose and transform after the in-situ Raman characteristic spectrum of product.
(1) PVC is placed on the metal sample frame 5;
(2) use quartzy end cap 4 to cover the two ends of stainless steel sample hose 1, and pass through O-ring seal 8 sealings; Utilize vacuum pump through aspirating hole 6 with being extracted into 10 in the stainless steel sample hose 1
-6Behind the vacuum state of Pa, close vacuum valve 7;
(3) make quartzy end cap 4 incidents of light laser 2, and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose 1 from stainless steel sample pipe 1 one ends;
(4) the 50 double-length focus objective lens 3 that utilize the burnt Raman spectrometer of copolymerization to be equipped with focus on exciting light (wavelength is 514nm) in the stainless steel sample hose 1 through quartz window 9; The Raman signal that it excited is collected by long focus objective lens 3 again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Experimental result: obtained PVC decompose and transform after the in-situ Raman characteristic spectrum of product.
The above only is a preferred implementation of the present invention; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (1)
1. the collection and the detection method of substance decomposition or converted product under a light laser is shone; It is characterized in that: the sample hose that adopts in this method comprises stainless steel sample hose (1) and covers two quartzy end caps (4) at stainless steel sample hose (1) two ends, between quartzy end cap (4) and stainless steel sample hose (1), seals through O-ring seal (8); On stainless steel sample hose (1), be provided with quartz window (9) and have the aspirating hole (6) of vacuum valve (7), in stainless steel sample hose (1), be provided with metal sample frame (5); This method comprises the steps:
(1) sample is placed on the metal sample frame (5);
(2) use quartzy end cap (4) to cover the two ends of stainless steel sample hose (1), and pass through O-ring seal (8) sealing; Utilize vacuum pump to pass through aspirating hole (6), close vacuum valve (7) after being extracted into needed vacuum state in the stainless steel sample hose (1);
(3) make quartzy end cap (4) incident of light laser (2), and be radiated on the sample, treat that the decomposition of sample or converted product are diffused in the whole stainless steel sample hose (1) from stainless steel sample pipe (1) one end;
(4) the long focus objective lens (3) that utilizes the burnt Raman spectrometer of copolymerization to be equipped with focuses on exciting light in the stainless steel sample hose (1) through quartz window (9); The Raman signal that it excited is collected by long focus objective lens (3) again; And utilize Raman spectrometer to detect, according to the raman signatures spectral line of different materials product is analyzed and researched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102414544A CN102426164A (en) | 2011-08-22 | 2011-08-22 | Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102414544A CN102426164A (en) | 2011-08-22 | 2011-08-22 | Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation |
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| CN102426164A true CN102426164A (en) | 2012-04-25 |
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| CN2011102414544A Pending CN102426164A (en) | 2011-08-22 | 2011-08-22 | Method for collecting and detecting material decomposition product or material transformation product under strong laser irradiation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162523A (en) * | 2013-05-16 | 2014-11-26 | 宝山钢铁股份有限公司 | Removal method for residual oily soil and water vapor in vacuum spectrometer chamber of X-ray fluorescence spectrophotometer |
| CN106680227A (en) * | 2017-02-20 | 2017-05-17 | 绍兴文理学院 | Spectrum analysis system and spectrum analysis method for component detection |
| CN107101853A (en) * | 2017-05-12 | 2017-08-29 | 连云港市亿吉皮件厂 | Vacuum core sampler |
| CN111138703A (en) * | 2019-12-30 | 2020-05-12 | 四川大学 | Method for preparing linear polyene pigment by laser irradiation of polymer resin |
| CN113484242A (en) * | 2021-07-06 | 2021-10-08 | 南开大学 | Simple sample vacuum device for strong laser damage experiment |
Citations (3)
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|---|---|---|---|---|
| CN2120330U (en) * | 1992-04-19 | 1992-10-28 | 厦门大学 | low-temperature in-situ laser Raman spectrum sample pool |
| US20040036018A1 (en) * | 2001-06-06 | 2004-02-26 | Yoshihiro Deguchi | Device and method for detecting trace amounts of organic components |
| CN102147363A (en) * | 2011-01-10 | 2011-08-10 | 东南大学 | Device and method for detecting surface cleanness of material |
-
2011
- 2011-08-22 CN CN2011102414544A patent/CN102426164A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2120330U (en) * | 1992-04-19 | 1992-10-28 | 厦门大学 | low-temperature in-situ laser Raman spectrum sample pool |
| US20040036018A1 (en) * | 2001-06-06 | 2004-02-26 | Yoshihiro Deguchi | Device and method for detecting trace amounts of organic components |
| CN102147363A (en) * | 2011-01-10 | 2011-08-10 | 东南大学 | Device and method for detecting surface cleanness of material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104162523A (en) * | 2013-05-16 | 2014-11-26 | 宝山钢铁股份有限公司 | Removal method for residual oily soil and water vapor in vacuum spectrometer chamber of X-ray fluorescence spectrophotometer |
| CN104162523B (en) * | 2013-05-16 | 2016-04-27 | 宝山钢铁股份有限公司 | The sweep-out method of the oil residues sewage vapour of X fluorescence spectrometer vacuum light-splitting chamber |
| CN106680227A (en) * | 2017-02-20 | 2017-05-17 | 绍兴文理学院 | Spectrum analysis system and spectrum analysis method for component detection |
| CN107101853A (en) * | 2017-05-12 | 2017-08-29 | 连云港市亿吉皮件厂 | Vacuum core sampler |
| CN111138703A (en) * | 2019-12-30 | 2020-05-12 | 四川大学 | Method for preparing linear polyene pigment by laser irradiation of polymer resin |
| CN111138703B (en) * | 2019-12-30 | 2022-02-15 | 四川大学 | Method for preparing linear polyene pigment by laser irradiation of polymer resin |
| CN113484242A (en) * | 2021-07-06 | 2021-10-08 | 南开大学 | Simple sample vacuum device for strong laser damage experiment |
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Application publication date: 20120425 |