CN220819586U - Laser ablation's multichannel analytical equipment and high-voltage static sampling module - Google Patents
Laser ablation's multichannel analytical equipment and high-voltage static sampling module Download PDFInfo
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- CN220819586U CN220819586U CN202322150621.5U CN202322150621U CN220819586U CN 220819586 U CN220819586 U CN 220819586U CN 202322150621 U CN202322150621 U CN 202322150621U CN 220819586 U CN220819586 U CN 220819586U
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- 238000000608 laser ablation Methods 0.000 title claims abstract description 47
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Abstract
The utility model discloses a laser ablation multiplexing analysis device and a high-voltage electrostatic sampling module, which are characterized by comprising a laser ablation module and a multiplexing distribution module; the laser ablation module is used for generating ablation laser to carry out laser ablation on a sample to be detected and sending the obtained aerosol into the multi-path distribution module; the multi-path distribution module comprises a splitter and a splitting module, each splitting path of the splitter is provided with a proportional valve, each splitting path is connected with one splitting path module, the proportional valve is used for controlling the proportion of sample injection amount entering each splitting path, and each splitting path module is one of a detection module and a sample collection module. According to the utility model, the aerosol obtained after laser ablation is simultaneously distributed to each shunt to enter the corresponding detection module or sample collection module by arranging the multi-way distribution module, so that different detection requirements can be simultaneously met, the detection and analysis efficiency is greatly improved, the comparison analysis of samples is realized, and a large amount of experimental time is saved.
Description
Technical Field
The utility model belongs to the technical field of instrument analysis and detection, and particularly relates to a laser ablation multi-path analysis device and a high-voltage electrostatic sampling module.
Background
Mass spectrometry is an instrumental analysis technique widely used in the fields of chemistry, biology, geology, environmental science, etc. Mass spectrometry can be classified into various types, such as ionization mass spectrometry, high energy ion impact mass spectrometry, magnetic resonance mass spectrometry, time-of-flight mass spectrometry, fast atom bombardment mass spectrometry, plasma mass spectrometry, etc., according to different mass spectrometer principles and application ranges.
Along with the gradual maturation of a laser ablation system, the laser ablation is used as a solid direct sample injection mode, and the combined use of the laser ablation and mass spectrum has great advantages in the aspects of trace, ultra trace elements, isotope analysis and the like, plays an important role in the development of the earth science micro-region technology, and is also extended to the fields of material science, marine science, life science and the like.
At present, one laser ablation system on the market can only be connected with one mass spectrum or other analysis instruments, the laser ablation system with high price is not fully utilized, different test requirements can not be met at the same time, and the detection efficiency is low.
Laser ablation produces nanoparticles suitable for mass spectrometer analysis, whereas the minimum diameter of particles ablated with a femtosecond laser can reach 10nm, these nanoparticles forming an aerosol with a carrier gas. At present, the commonly used filter membrane for the air particle sampler in China has the minimum pore diameter of 0.1 mu m, the particle collection rate of the filter membrane with the diameter of less than 0.1 mu m is low, and the scientific research requirement is difficult to meet, so that the nano particles generated by laser ablation are not collected by suitable equipment at present, and the sample cannot be reserved for retesting and comparison experiments in different laboratories.
Disclosure of utility model
Therefore, one of the purposes of the present utility model is to provide a laser ablation multiplexing analysis device, which is configured to simultaneously distribute aerosol obtained after laser ablation to each branch to enter a corresponding detection module or a sample collection module, so as to simultaneously meet different detection requirements, greatly improve detection and analysis efficiency, realize comparison analysis of samples, and save a large amount of experimental time.
In order to achieve the above object, a first aspect of the present utility model provides a laser ablation multiplexing device, including a laser ablation module and a multiplexing module;
The laser ablation module is used for generating ablation laser to carry out laser ablation on a sample to be detected and sending the obtained aerosol into the multi-path distribution module;
the multi-path distribution module comprises a splitter and a splitting module, each splitting path of the splitter is provided with a proportional valve, each splitting path is connected with one splitting path module, the proportional valve is used for controlling the proportion of sample injection amount entering each splitting path, and each splitting path module is one of a detection module and a sample collection module.
Preferably, the sample collection module comprises a high voltage electrostatic sampling module; the high-voltage electrostatic sampling module comprises an air inlet, an air outlet, a high-voltage electrode, a sampling cylinder, an insulating shell and a fixed cover; the sampling tube is arranged in the insulating shell, the fixed covers are arranged at two ends of the sampling tube, the air inlet and the air outlet are respectively arranged on the fixed covers at two ends of the sampling tube, the high-voltage electrode is fixedly arranged in the middle of the sampling tube, and the high-voltage electrode is used for collecting aerosol in gas entering the sampling tube through electrostatic adsorption.
Preferably, at least one of the branching modules is a detection module, the multiplexing module further comprises a signal distribution module, and the signal distribution module is respectively connected with the laser ablation module and the detection module in a signal manner; the signal distribution module is used for receiving the detection trigger signal sent by the laser ablation module and transmitting the detection trigger signal to the corresponding detection module.
Preferably, at least one of the branching modules is a detection module, at least one of the detection modules comprising a mass spectrometer.
Preferably, the laser ablation module comprises a three-dimensional galvanometer module, and the three-dimensional galvanometer module is used for adjusting the focusing position of the ablation laser at a high speed.
The utility model also provides a high-voltage electrostatic sampling module of the laser ablation multi-path analysis device, which is matched with the multi-path analysis device to collect and temporarily store a branched sample aerosol, so that the cross-laboratory or cross-time-domain collaborative analysis detection of the same sample is finished offline.
The beneficial effects of the utility model are as follows:
(1) The utility model can simultaneously distribute and transmit the aerosol after laser ablation to a plurality of mass spectrums or other analysis instruments for synchronous analysis through the multi-path distribution module, thereby realizing the comparative analysis of samples, the mutual verification of analysis results, improving the accuracy of the analysis results, finding the difference of the instruments and realizing the correction of the instruments;
(2) The utility model can store the collected sample through the sample collection module for the next analysis, and can also send the collected sample to other laboratories for detection and analysis, thus realizing parallel control experiments of different laboratories;
(3) The sample collection module can realize the efficient collection of more than 99% of nano-scale particles, reduce the loss in the sample collection process, and not only can obtain the accurate sampling amount of the time but also can calculate the efficiency of laser ablation by weighing the sample collection module before and after sampling;
(4) The utility model adopts the three-dimensional vibrating mirror module to greatly increase the sample quantity for multi-path analysis or collection.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a laser ablation multiplexing device according to the present utility model;
FIG. 2 is a schematic diagram of a three-dimensional galvanometer module according to the present disclosure;
Fig. 3 is a schematic structural diagram of a high-voltage electrostatic sampling module disclosed in the present utility model.
Detailed Description
One of the cores of the utility model is to provide a laser ablation multiplex analysis device, aerosol obtained after laser ablation is simultaneously distributed to each shunt to enter a corresponding detection module or a sample collection module by arranging a multiplex distribution module, so that different detection requirements can be simultaneously met, the detection and analysis efficiency is greatly improved, the comparison analysis of samples is realized, and a large amount of experiment time is saved.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, a laser ablation multiplexing analysis device disclosed in an embodiment of the present utility model includes a laser ablation module 1 and a multiplexing distribution module 2; the laser ablation module 1 is used for generating ablation laser to carry out laser ablation on a sample to be detected and sending the obtained aerosol into the multi-path distribution module, the laser ablation module 1 comprises a laser emitter 11, a light path system 12, a three-dimensional galvanometer module 13 and a field lens 14, the laser emitter 11 is used for generating ablation laser, and the ablation laser carries out laser ablation on the sample 15 to be detected after sequentially passing through the light path system 12, the three-dimensional galvanometer module 13 and the field lens 14; the multi-path distribution module comprises a splitter 21, a splitting module and a signal distribution module 25, wherein the splitter 21 is a smooth device with an arc-shaped interface, each splitting path of the splitter 21 is respectively provided with a proportional valve 22, each splitting path is respectively connected with one splitting path module, and each splitting path module is one of a detection module 23 and a sample collection module 24; the proportional valve 22 is used for controlling the proportion of the sample injection amount of the sample entering each branch, so as to adjust the signal intensity of the corresponding detection module 23, and a person skilled in the art can set the proportional valve 22 according to actual needs; the signal distribution module 25 is respectively connected with the laser ablation module 1 and the detection module 23 in a signal manner; the signal distribution module 25 is used for strengthening and branching the trigger signal of the analysis instrument sent by the laser ablation module 1, transmitting the TTL signal into a TTL signal or a Switch signal according to the type of the received signal of the analysis instrument, transmitting the TTL signal or the Switch signal to the corresponding detection module 23, and commanding the instrument to start working to synchronously detect the received sample. According to the embodiment of the utility model, the multiple instruments can be simultaneously controlled to synchronously analyze through the multiple distribution modules and sending out a trigger signal, so that the comparison analysis of samples can be realized, the analysis results are mutually verified, the accuracy of the analysis results is improved, the analysis efficiency is improved, the time is saved, in addition, the difference of the instruments can be found, and the instrument correction is realized. The branches of the branching unit 21 in this embodiment are smooth and have no sharp corners, so that no residue of the sample in the branching unit is ensured, and the pipe diameters of the branches are consistent, so that the distribution proportion of the sample can be consistent.
In this embodiment, the detection module 23 comprises a mass spectrometer, and in other embodiments, a plurality of mass spectrometers or other analysis instruments may be provided as desired by those skilled in the art.
As shown in fig. 2, the three-dimensional galvanometer module of the embodiment of the utility model includes a Z-axis moving lens 101, a Z-axis focusing lens 102, an X-axis galvanometer 103, and a Y-axis galvanometer 104; the three-dimensional galvanometer module adjusts the position of the focus of the ablation laser along the optical axis direction at high speed through the cooperation of the Z-axis moving lens 101 and the Z-axis focusing lens 102 (adjusting the distance between the Z-axis moving lens 101 and the Z-axis focusing lens 102); the X-axis galvanometer 103 and the Y-axis galvanometer 104 are used for adjusting the positions of the focal points of the ablation laser along the direction perpendicular to the optical axis at high speed, and the X-axis galvanometer 103 and the Y-axis galvanometer 104 can respectively perform high-frequency reciprocating rotation around the axis. The embodiment of the utility model can greatly increase the sample quantity generated during laser ablation, so as to be used for multiplex analysis or collection.
As shown in fig. 3, the sample collection module according to the embodiment of the present utility model includes a high-voltage electrostatic sampling module including an air inlet 301, an air outlet 302, a high-voltage electrode 303, a sampling cylinder 304, an insulating housing 305, and a fixed cover 306; the sampling tube 304 is arranged in the insulating housing 305, the fixed covers 306 are arranged at two ends of the sampling tube 304, the air inlet 301 and the air outlet 302 are respectively arranged on the fixed covers at two ends of the sampling tube 304, the high-voltage electrode 303 is fixedly arranged in the middle of the sampling tube 304, and the high-voltage electrode 303 is used for collecting aerosol in gas entering the sampling tube 304 through electrostatic adsorption. In this embodiment, the insulating housing 305 is a glass round tube (or plastic round tube) with a length exceeding 12cm, and the length of the high voltage electrode 303 exceeds 10cm and is 0.5cm shorter than the length of the sampling tube 304. The high-voltage electrode 303 is connected with the high-voltage electrostatic generator through a high-voltage binding post 307, and the other side of the high-voltage electrode 303 is inserted into an electrode bayonet 308 in the middle of an insulating fixed cover 306 during installation, so that the whole high-voltage electrode 303 is ensured to be positioned at the axle center of a sampling tube 304; the cartridge 304 is connected to a ground line 309 through a post 307. After the sampling is completed, after the high voltage power supply is surely turned off, the sampling cylinder 304 is taken out. Because the sampled particles are nano particles, the collected particles need to be washed from the sampling cylinder 304 by adopting high-purity deionized water and put into a sample bottle for standby; the sampling cylinder 304 is dried for the next use. The embodiment of the utility model can realize the efficient collection of more than 99% of nano-scale particles, reduce the loss in the sample collection process, and not only can obtain the accurate sampling amount of the time but also can calculate the laser ablation efficiency by weighing the sample collection module before and after sampling.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The laser ablation multiplexing analysis device is characterized by comprising a laser ablation module and a multiplexing distribution module;
The laser ablation module is used for generating ablation laser to carry out laser ablation on a sample to be detected and sending the obtained aerosol into the multi-path distribution module;
The multi-path distribution module comprises a splitter and a splitting module, each splitting path of the splitter is provided with a proportional valve, each splitting path is connected with one splitting path module, the proportional valve is used for controlling the proportion of sample injection amount entering each splitting path, and each splitting path module is one of a detection module and a sample collection module;
At least one branching module is a sample collection module, and the sample collection module comprises a high-voltage electrostatic sampling module; the high-voltage electrostatic sampling module comprises an air inlet, an air outlet, a high-voltage electrode, a sampling cylinder, an insulating shell and a fixed cover; the sampling cylinder is arranged in the insulating shell, the fixed covers are arranged at two ends of the sampling cylinder, the air inlet and the air outlet are respectively arranged on the fixed covers at two ends of the sampling cylinder, the high-voltage electrode is fixedly arranged in the middle of the sampling cylinder, and the high-voltage electrode is used for collecting aerosol in gas entering the sampling cylinder through electrostatic adsorption;
the laser ablation module comprises a three-dimensional galvanometer module, and the three-dimensional galvanometer module is used for adjusting the focusing position of the ablation laser at a high speed.
2. The multiplexing device of claim 1, wherein at least one of the branching modules is a detection module, and the multiplexing module further comprises a signal distribution module, and the signal distribution module is respectively connected with the laser ablation module and the detection module in a signal manner; the signal distribution module is used for receiving the detection trigger signal sent by the laser ablation module and transmitting the detection trigger signal to the corresponding detection module.
3. The multiplexing device of claim 1, wherein at least one of the branching modules is a detection module, at least one of the detection modules comprising a mass spectrometer.
4. The high-voltage electrostatic sampling module is characterized by comprising an air inlet, an air outlet, a high-voltage electrode, a sampling cylinder, an insulating shell and a fixed cover; the sampling tube is arranged in the insulating shell, the fixed covers are arranged at two ends of the sampling tube, the air inlet and the air outlet are respectively arranged on the fixed covers at two ends of the sampling tube, the high-voltage electrode is fixedly arranged in the middle of the sampling tube, and the high-voltage electrode is used for collecting aerosol in gas entering the sampling tube through electrostatic adsorption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322150621.5U CN220819586U (en) | 2023-08-10 | 2023-08-10 | Laser ablation's multichannel analytical equipment and high-voltage static sampling module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322150621.5U CN220819586U (en) | 2023-08-10 | 2023-08-10 | Laser ablation's multichannel analytical equipment and high-voltage static sampling module |
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| CN220819586U true CN220819586U (en) | 2024-04-19 |
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| CN202322150621.5U Active CN220819586U (en) | 2023-08-10 | 2023-08-10 | Laser ablation's multichannel analytical equipment and high-voltage static sampling module |
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2023
- 2023-08-10 CN CN202322150621.5U patent/CN220819586U/en active Active
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