CN110954477A - Infrared spectrometer accessory - Google Patents
Infrared spectrometer accessory Download PDFInfo
- Publication number
- CN110954477A CN110954477A CN201811107957.0A CN201811107957A CN110954477A CN 110954477 A CN110954477 A CN 110954477A CN 201811107957 A CN201811107957 A CN 201811107957A CN 110954477 A CN110954477 A CN 110954477A
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- sample
- infrared spectrometer
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- sample chamber
- horn
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- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000012806 monitoring device Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 125000000524 functional group Chemical group 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 6
- 239000007791 liquid phase Substances 0.000 abstract description 6
- 238000002329 infrared spectrum Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000000376 reactant Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 12
- 239000000126 substance Substances 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to an accessory of an infrared spectrometer, which comprises: the sample chamber is provided with a sample cavity and a detection light path channel communicated with the sample cavity; an ultrasonic generator comprising a transducer and an horn to transmit acoustic energy from the transducer into the sample chamber. According to the embodiment provided by the invention, when the infrared spectrometer detects, the ultrasonic generator uniformly disperses the sample, so that the sample is prevented from or slowed down from being settled under the action of gravity, the reactants are ensured to uniformly react with each other in the detection process, the temperature of the sample can be controlled by the arranged temperature control component, the infrared spectrometer can capture infrared spectrum changes of the sample at different temperatures, and experimenters can more accurately observe the functional group changes in the liquid phase chemical reaction process to obtain more accurate experimental data.
Description
Technical Field
The invention relates to the field of analysis and detection, in particular to an infrared spectrometer accessory.
Background
The infrared spectrometer is an instrument for detecting and analyzing the structure and chemical composition of a substance based on the infrared absorption difference of different substances, and is widely applied to the fields of material science, polymer chemistry, petroleum industry, biomedicine, daily chemical industry and the like. However, the structures and forms of substances to be tested in different fields often vary greatly, and therefore it is necessary to place the sample in a suitable accessory before testing so that the infrared light can be brought into sufficient contact with the substance to be tested, and currently commonly used accessories can be divided into two categories, namely transmission accessories and attenuated total internal reflection (ATR) accessories, of which transmission accessories are the more commonly used category.
The transmission accessory generally comprises two infrared window sheets and a window sheet support, a sample is borne between the two window sheets, liquid samples are common, the transmission accessory can well complete a test task of a certain time point, but infrared spectroscopy can provide continuous infrared light detection analysis as a spectrum technology, samples in the transmission accessory often settle to a certain degree due to the action of gravity and the like, and the samples cannot be fully reacted at the moment, so that the continuous reaction effect is difficult to realize.
Disclosure of Invention
Accordingly, it is necessary to provide an infrared spectrometer accessory for solving the problems that samples to be detected are settled due to the action of gravity and the like, and the samples cannot be fully reacted.
An infrared spectrometer accessory for detecting functional group changes during chemical reactions in a liquid phase, said infrared spectrometer accessory comprising:
the sample chamber is provided with a sample cavity and a detection light path channel communicated with the sample cavity;
an ultrasonic generator comprising a transducer and an horn to transmit acoustic energy from the transducer into the sample chamber.
The vibration frequency adjusting range of the ultrasonic generator is 5-50 kHz. The two ends of the detection optical channel are also provided with transmission lenses, the transmission lenses are parallel to each other, and the distance between the transmission lenses and the inner wall of the detection optical channel is 0.01-10000 um.
In one embodiment, the infrared spectrometer accessory further comprises a support on which the transducer is mounted.
In one embodiment, the horn doubles as a sample chamber, the sample chamber opening into the interior of the horn.
In one embodiment, the sample chamber is provided with a first sample passing channel and a second sample passing channel which are respectively communicated with the sample cavity, and the outer wall of the sample chamber is further provided with a first sample passing tube and a second sample passing tube which correspond to the first sample passing channel and the second sample passing channel.
In one embodiment, at least one sample passing pipe is provided with a sample passing pump.
In one embodiment, the infrared spectrometer accessory further comprises a flow monitoring device for monitoring the flow rate of the sample entering and exiting the sample chamber, wherein the flow monitoring device is mounted on the first sample passing tube and/or the second sample passing tube and is used for controlling the flow rate of the sample entering and exiting the sample chamber. The flow control range of the flow monitoring device is 0.1-10sccm, and the control precision is 0.05 sccm.
In one embodiment, the amplitude transformer is vertically arranged on the transducer, the bottom of the amplitude transformer is connected with the transducer, and the top of the amplitude transformer is provided with the sample cavity.
In one embodiment, the sample-passing channels include a first sample-passing channel and a second sample-passing channel, the first sample-passing channel and the second sample-passing channel are located on a first horizontal line, and the detection light-path channel is located on a second horizontal line.
In one embodiment, the infrared spectrometer accessory further comprises a temperature control device for detecting and adjusting the temperature in the sample chamber. The temperature control range of the temperature control device is-10 ℃ to 60 ℃, and the temperature control precision is 0.2 ℃.
In one embodiment, the horn is connected at one end to the transducer and at the other end to the sample chamber, and the sample chamber is not in contact with the support and the transducer.
According to the embodiment provided by the invention, when the infrared spectrometer detects, the ultrasonic generator uniformly disperses the sample, so that the sample is prevented from or slowed down from being settled under the action of gravity, the reactants are ensured to uniformly react with each other in the detection process, the temperature of the sample can be controlled by the arranged temperature control component, the infrared spectrometer can capture infrared spectrum changes of the sample at different temperatures, and experimenters can more accurately observe the functional group changes in the liquid phase chemical reaction process to obtain more accurate experimental data.
Drawings
FIG. 1 is a schematic view of an infrared spectrometer accessory according to an embodiment of the present invention;
FIG. 2 is a top view of the infrared spectrometer accessory of FIG. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, the present invention provides an infrared spectrometer accessory, which is mainly applied to the field of analysis and detection and is used for detecting functional group changes in a chemical reaction process in a liquid phase. The infrared spectrometer accessory is used for assisting the infrared spectrometer to detect a sample, so that the infrared spectrometer can obtain more accurate experimental data.
An infrared spectrometer accessory for detecting functional group changes during chemical reactions in a liquid phase, comprising: an ultrasonic generator 10 and a sample chamber 20.
Optionally, the sample chamber 20 is provided with a sample cavity (not shown) and a detection light path 230 communicating with the sample cavity, so that the infrared light emitted by the infrared spectrometer can irradiate the sample, and the irradiated infrared light can be received. In this embodiment, two ends of the detection light path 230 are further provided with transmission lenses (not shown), and the transmission lenses are parallel to each other, so as to prevent foreign matters from entering the sample cavity and affecting the detection result. The distance between the transmission lens and the inner wall of the detection light path 230 is 0.01-10000 um.
Optionally, the sonotrode 10 comprises: a transducer 120 and a horn 110 for transmitting acoustic energy from the transducer 120 into the sample chamber. One end of the amplitude transformer 110 is connected with the transducer 120, the other end of the amplitude transformer is fixedly connected with the chamber wall of the sample chamber 20, the transducer 120 controls the amplitude transformer 110 to act ultrasonic waves on the samples in the sample chamber, so that the samples in the sample chamber are distributed more uniformly in a whole manner, the chemical reaction among the samples is more sufficient, and the sedimentation caused by the action of gravity is avoided or slowed down. The vibration frequency adjusting range of the ultrasonic generator 10 is 5-50 kHz.
In one embodiment, the horn 110 doubles as the sample chamber 20, the horn 110 is vertically disposed on the transducer 120, the bottom of the horn 110 is connected to the transducer 120, and the top of the horn is opened with the sample chamber. The sample cavity is opened inside the horn 110, and the transducer 120 directly applies ultrasonic waves to the sample through the horn 110, so that energy consumption during ultrasonic wave transmission is reduced.
In another embodiment, the sample chamber 20 is a separate component, the horn 110 is vertically disposed on the transducer 120, the bottom of the horn 110 is connected to the transducer 120, the top of the horn 110 is fixedly connected to the sample chamber 20, the fixed connection is formed by welding the sample chamber 20 to the top of the horn 110, the sample chamber is not in contact with the support and the transducer, and the transducer 120 applies ultrasonic waves to the sample in the sample chamber 20 through the horn 110.
Optionally, the sample chamber 20 is provided with a first sample passage 210 and a second sample passage 220 respectively communicated with the sample cavity, the other end opening is provided on the outer wall of the sample chamber 20, the outer wall of the sample chamber 20 is further provided with a first sample passing tube 211 and a second sample passing tube 221 corresponding to the first sample passage 210 and the second sample passage 220, and the sample passage and the sample passing tubes are in sealing fit. Specifically, the sample tube connected to the first sample channel 210 and/or the second sample channel 220 is provided with a sample pump. According to the detection requirement, the arrangement mode of the sampling tube comprises an open-loop mode and a closed-loop mode. When the sample passing pipes are arranged in an open loop mode, sample passing pumps are arranged at the ends of the second sample inlet pipelines; when the sample passing pipes are arranged in a closed loop, a sample passing pump is arranged on any sample passing pipe. In this embodiment, the sample-passing pump is disposed in the second sample-passing tube 221.
Optionally, the first sample-passing channel 210 and the second sample-passing channel 220 are on a first horizontal line, and the detection light channel 230 is on a second horizontal line. In one embodiment, the first horizontal line is perpendicular to the second horizontal line. In another embodiment, the first horizontal line is parallel to the second horizontal line. Preferably, the first horizontal line is perpendicular to the second horizontal line.
Optionally, the infrared spectrometer accessory further comprises a flow monitoring device 30 that monitors the flow rate of the sample into and out of the sample chamber 20. Specifically, the flow rate monitoring device 30 is installed on the sample passing pipe, the flow rate control range of the flow rate monitoring device 30 is 0.1sccm to 10sccm, and the control precision is 0.05 sccm. In this embodiment, the flow monitoring device 30 is mounted on the second sample passage 221 and located between the temperature control device 40 and the sample chamber 20. In another embodiment, the flow monitoring device 30 is connected to the sample pump, and the sample pump is controlled to adjust the flow rate of the sample into and out of the sample chamber 20 according to the data of the sample into and out of the sample chamber 20.
Optionally, the infrared spectrometer accessory further comprises a temperature control device 40 for detecting and adjusting the temperature in the sample tank, and is used for accelerating or slowing down the reaction speed of the sample, wherein the temperature control range of the temperature control device 40 is-10 ℃ to 60 ℃, and the temperature control precision is 0.2 ℃. In this embodiment, the temperature control device 40 is located on the outer wall of the second sample application pipe 221, and can adjust the temperature of the sample entering the sample chamber 20. It is understood that the location of the temperature control device 40 is not limited, and the temperature in the sample chamber 20 can be adjusted.
Optionally, the infrared spectrometer accessory further comprises a support 50, and the ultrasonic generator 10, the temperature control device 40 and the flow monitoring device 30 are all fixedly connected to the support 50. The fixed connection comprises a buckle connection, a bolt connection, an adhesive connection or other fixed connection modes. In one embodiment, the supporting member 50 is provided with two pillars, and the temperature control device 40 and the flow monitoring device 30 are respectively fixed on each pillar to facilitate the flow of the sample in the sample application tube.
Optionally, the infrared spectrometer accessory further comprises a power supply for providing operating power for the infrared spectrometer accessory.
According to the embodiment provided by the invention, when the infrared spectrometer detects, the ultrasonic generator uniformly disperses the sample, so that the sample is prevented from or slowed down from being settled under the action of gravity, the reactants are ensured to uniformly react with each other in the detection process, the temperature of the sample can be controlled by the arranged temperature control component, the infrared spectrometer can capture infrared spectrum changes of the sample at different temperatures, and experimenters can more accurately observe the functional group changes in the liquid phase chemical reaction process to obtain more accurate experimental data.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An infrared spectrometer accessory, comprising:
the sample chamber is provided with a sample cavity and a detection light path channel communicated with the sample cavity;
an ultrasonic generator comprising a transducer and an horn to transmit acoustic energy from the transducer into the sample chamber.
2. The infrared spectrometer accessory of claim 1, further comprising a support on which the transducer is mounted.
3. The infrared spectrometer accessory of claim 1, wherein the horn doubles as a sample chamber, the sample chamber opening inside the horn.
4. The infrared spectrometer accessory according to any one of claims 1 or 3, wherein the sample chamber is provided with at least two sample passing channels respectively communicated with the sample chamber, and an external sample passing tube hermetically connected with each sample passing channel is further installed on the outer wall of the sample chamber.
5. The infrared spectrometer attachment of claim 4, wherein at least one sample tube is provided with a sample pump.
6. The infrared spectrometer accessory of claim 4, further comprising a flow monitoring device that monitors the flow rate of the sample into and out of the sample chamber, the flow monitoring device being mounted to one of the sample tubes.
7. The infrared spectrometer attachment of claim 4, wherein the horn is vertically disposed on the transducer, the horn is connected to the transducer at a bottom portion thereof, and the sample chamber is open at a top portion thereof.
8. The infrared spectrometer accessory of claim 4, wherein the sample-passing channel comprises a first sample-passing channel and a second sample-passing channel, the first sample-passing channel and the second sample-passing channel are on a first horizontal line, the detection light path channel is on a second horizontal line, and the first horizontal line is higher than the second horizontal line.
9. The infrared spectrometer accessory of claim 6, further comprising a temperature control device that detects and adjusts the temperature of the sample.
10. The infrared spectrometer accessory of claim 1, wherein the horn is connected at one end to the transducer and at the other end to the sample chamber, and the sample chamber is not in contact with the support and the transducer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107957.0A CN110954477B (en) | 2018-09-21 | 2018-09-21 | Infrared spectrometer accessory |
| PCT/CN2018/125076 WO2020057004A1 (en) | 2018-09-21 | 2018-12-28 | Infrared spectrometer accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107957.0A CN110954477B (en) | 2018-09-21 | 2018-09-21 | Infrared spectrometer accessory |
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| CN110954477A true CN110954477A (en) | 2020-04-03 |
| CN110954477B CN110954477B (en) | 2021-12-21 |
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| CN201811107957.0A Active CN110954477B (en) | 2018-09-21 | 2018-09-21 | Infrared spectrometer accessory |
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Citations (7)
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|---|---|---|---|---|
| US5453733A (en) * | 1992-07-20 | 1995-09-26 | Digital Security Controls Ltd. | Intrusion alarm with independent trouble evaluation |
| CN102042965A (en) * | 2010-11-18 | 2011-05-04 | 上海衡伟信息技术有限公司 | On-line broad-spectrum water quality analyzer |
| CN104215598A (en) * | 2014-09-30 | 2014-12-17 | 北京卫星环境工程研究所 | Online infrared absorption spectrum detecting system for gas composition released from spacecraft material |
| CN104351908A (en) * | 2014-07-21 | 2015-02-18 | 河南科技大学 | Quick enzyme inactivation method |
| CN104729294A (en) * | 2015-03-20 | 2015-06-24 | 重庆科技学院 | Ultrasonic vibration activation assisted microwave sintering furnace |
| CN205719939U (en) * | 2016-04-07 | 2016-11-23 | 武汉绿丰新创环保科技有限公司 | infrared spectrum alcoholic strength monitoring probe |
| CN206192874U (en) * | 2016-11-18 | 2017-05-24 | 秦静 | Supersound diffusion formula western medicine content testing device |
-
2018
- 2018-09-21 CN CN201811107957.0A patent/CN110954477B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453733A (en) * | 1992-07-20 | 1995-09-26 | Digital Security Controls Ltd. | Intrusion alarm with independent trouble evaluation |
| CN102042965A (en) * | 2010-11-18 | 2011-05-04 | 上海衡伟信息技术有限公司 | On-line broad-spectrum water quality analyzer |
| CN104351908A (en) * | 2014-07-21 | 2015-02-18 | 河南科技大学 | Quick enzyme inactivation method |
| CN104215598A (en) * | 2014-09-30 | 2014-12-17 | 北京卫星环境工程研究所 | Online infrared absorption spectrum detecting system for gas composition released from spacecraft material |
| CN104729294A (en) * | 2015-03-20 | 2015-06-24 | 重庆科技学院 | Ultrasonic vibration activation assisted microwave sintering furnace |
| CN205719939U (en) * | 2016-04-07 | 2016-11-23 | 武汉绿丰新创环保科技有限公司 | infrared spectrum alcoholic strength monitoring probe |
| CN206192874U (en) * | 2016-11-18 | 2017-05-24 | 秦静 | Supersound diffusion formula western medicine content testing device |
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