CN107887250B - Automatic sample feeding device of inductively coupled plasma mass spectrometer - Google Patents
Automatic sample feeding device of inductively coupled plasma mass spectrometer Download PDFInfo
- Publication number
- CN107887250B CN107887250B CN201711310601.2A CN201711310601A CN107887250B CN 107887250 B CN107887250 B CN 107887250B CN 201711310601 A CN201711310601 A CN 201711310601A CN 107887250 B CN107887250 B CN 107887250B
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- inductively coupled
- mass spectrometer
- coupled plasma
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- 238000009616 inductively coupled plasma Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 102
- 238000002347 injection Methods 0.000 claims abstract description 89
- 239000007924 injection Substances 0.000 claims abstract description 89
- 239000000243 solution Substances 0.000 claims abstract description 48
- 238000012546 transfer Methods 0.000 claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 6
- 230000036541 health Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000000523 sample Substances 0.000 description 87
- 239000012488 sample solution Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0431—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for liquid samples
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
- H01J49/0409—Sample holders or containers
Abstract
The invention relates to an automatic sample injection device of an inductively coupled plasma mass spectrometer, which comprises a sample injection needle, a transfer mechanism and a lifting mechanism. The transfer mechanism is used for transferring the container provided with the solution to be detected to the lower part of the sample injection needle. The lifting mechanism is used for driving the sampling needle to lift so that the sampling needle can be inserted into the container. According to the automatic sample injection device of the inductively coupled plasma mass spectrometer, the container for accommodating the solution to be detected is directly placed on the transfer mechanism, the container is transferred to the lower part of the sample injection needle by the transfer mechanism, and then the sample injection needle is inserted into the container by the lifting mechanism, so that the inductively coupled plasma mass spectrometer can sample the solution to be detected in the container. The automatic sample injection device of the inductively coupled plasma mass spectrometer has high automation degree and improves the sample injection efficiency; in addition, in the sample injection process, the solution to be detected does not need to be close to the sample, so that the human health is not affected.
Description
Technical Field
The invention relates to the technical field of sample injection of inductively coupled plasma mass spectrometers, in particular to an automatic sample injection device of an inductively coupled plasma mass spectrometer.
Background
The autosampler of inductively coupled plasma mass spectrometers generally comprises a dedicated sample solution cuvette and a dedicated sample needle. The laboratory staff usually transfer the solution in the laboratory vessel into a special sample solution test tube, and then send the solution into an inductively coupled plasma mass spectrometer for analysis by using a special sample injection needle.
However, transferring solutions from common laboratory containers into dedicated sample solution tubes has the following problems: when the solution is transferred, a worker is required to transfer the solution in the volumetric flask or the beaker into a special sample solution test tube by hand, and if a large amount of samples are operated, the working efficiency is low; in addition, in the process of transferring the solution, human organs such as fingers can contact the sample solution, which causes harm to human health.
Disclosure of Invention
Based on the above, it is necessary to overcome the defects of the prior art, and to provide an automatic sample injection device of an inductively coupled plasma mass spectrometer, which can improve the solution sample injection efficiency and can not cause harm to human health in the solution sample injection process.
The technical scheme is as follows: an autosampler for an inductively coupled plasma mass spectrometer, comprising: a sample injection needle, a transfer mechanism and a lifting mechanism; the transfer mechanism is used for transferring a container for accommodating the solution to be detected to the lower part of the sample injection needle; the lifting mechanism is used for driving the sampling needle to lift so that the sampling needle can be inserted into the container.
According to the automatic sample injection device of the inductively coupled plasma mass spectrometer, the to-be-detected solution in the container is not required to be transferred out of the special sample solution test tube, but the container provided with the to-be-detected solution is directly placed on the transfer mechanism, the container is transferred to the lower part of the sample injection needle by the moving mechanism, and then the sample injection needle is inserted into the container by the lifting mechanism, so that the inductively coupled plasma mass spectrometer can sample the to-be-detected solution in the container. Compared with the traditional manual sample injection mode, the automatic sample injection device of the inductively coupled plasma mass spectrometer has higher automation degree and improved sample injection efficiency; in addition, in the sample injection process, the solution to be detected does not need to be close to the sample, so that the human health is not affected.
Further, the automatic sample feeding device of the inductively coupled plasma mass spectrometer further comprises a clamping mechanism, wherein the clamping mechanism is used for clamping the container, and the transfer mechanism is used for driving the clamping mechanism to move. Therefore, after the clamping mechanism clamps the container, the transfer mechanism drives the clamping mechanism to drive the container to transfer to the preset position.
Further, the clamping mechanism comprises a chassis for placing the container, a plurality of first guide rails, a plurality of pressing plates and a plurality of first driving mechanisms; the first guide rail is connected with the chassis, and the first guide rail is circumferentially arranged at intervals around the edge of the chassis; the pressing plates are arranged in one-to-one correspondence with the first guide rails, and are slidably arranged on the first guide rails; the first driving mechanisms are in one-to-one correspondence with the pressing plates, and the first driving mechanisms are used for driving the pressing plates to move along the first guide rails. Therefore, after the container is placed on the chassis, the first driving mechanism drives the pressing plates to be close to the chassis, so that the container can be clamped and fixed on the chassis; after the solution in the container is injected, the first driving mechanism drives the pressing plate to be far away from the chassis, and the pressing plate loosens the container on the chassis, so that the container on the chassis can be taken out. The clamping mechanism can better and more conveniently clamp and fix containers with different sizes.
Further, the automatic sample injection device of the inductively coupled plasma mass spectrometer further comprises a plurality of first pressure sensing modules, the first pressure sensing modules are arranged corresponding to the pressing plates one by one, and the first pressure sensing modules are used for sensing the pressure applied by the pressing plates to the side wall of the container. So, through the pressure size that first pressure sensing module response clamp plate was applyed the container lateral wall, when sensing the pressure size that the clamp plate applyed the container lateral wall and surpassing the default, can control first actuating mechanism and stop driving the clamp plate and remove towards the chassis, avoid the too big effort of clamp plate to compress tightly the container and lead to the container damage phenomenon, the clamp plate is better to the fixed effect of centre gripping of container.
Further, the transfer mechanism comprises a tray frame, a second guide rail and a second driving mechanism, the chassis is detachably arranged on the tray frame, the tray frame is slidably arranged on the second guide rail, and the second driving mechanism is used for driving the tray frame to move along the second guide rail. In addition, be equipped with a plurality of gyro wheel on the second guide rail, the tray frame sets up on the gyro wheel, drives the tray frame by the gyro wheel.
Further, the second guide rail is provided with a first induction hole corresponding to the position of the sample injection needle, and the tray frame is provided with a second induction hole corresponding to the first induction hole; the second driving mechanism is used for stopping driving the tray frame when the second sensing hole is aligned with the first sensing hole. Therefore, when the second sensing hole is aligned with the first sensing hole, the second driving mechanism stops driving the tray frame, the container on the chassis is located below the sample injection needle, the lifting mechanism lowers the sample injection needle into the container, sampling operation can be performed, and the degree of automation is high.
Further, the tray frames are arranged in a row on the second guide rail, and adjacent tray frames are detachably connected. Therefore, a plurality of clamping mechanisms can be arranged on the plurality of tray frames, the plurality of clamping mechanisms can clamp a plurality of containers, and the second driving mechanism pushes the plurality of tray frames to move on the second guide rail, so that the containers corresponding to the tray frames are respectively transferred to the lower parts of the sample injection needles, and the sample injection operation on the plurality of containers can be realized in sequence.
Further, the transfer mechanism further comprises a slider, a third guide rail and a third driving mechanism, the slider is slidably arranged on the third guide rail, the plurality of clamping mechanisms are arranged on the slider at intervals, and the third driving mechanism drives the slider to move along the third guide rail.
Further, the automatic sample injection device of the inductively coupled plasma mass spectrometer further comprises a cushion block and a second pressure sensing module, wherein the cushion block is arranged at the bottom of the sample injection needle; the second pressure sensing module is used for sensing the pressure of the cushion block to the bottom wall of the container. Therefore, the cushion block can ensure that a space is reserved between the sample injection needle and the bottom wall of the container, and the liquid suction port of the sample injection needle is prevented from contacting the bottom wall of the container, so that the sample injection needle can be prevented from sucking sediment at the bottom of the container. In addition, the second pressure sensing module can sense the pressure of the cushion block to the bottom wall of the container, so that when the pressure of the cushion block to the bottom wall of the container exceeds a preset value, the lifting mechanism stops acting, and the needle head of the sample injection needle can be prevented from being crushed.
Further, the automatic sample injection device of the inductively coupled plasma mass spectrometer further comprises an acid solution cleaning device and a water cleaning device, and the sample injection needle is connected with the acid solution cleaning device and the water cleaning device through a first pipeline; the sample injection needle is also used for being connected with a solution receiver in the inductively coupled plasma mass spectrometer through a second pipeline. Thus, after the action of sucking the solution to be detected by the sample injection needle is finished, the sample injection needle is moved out of the container through the lifting mechanism. Firstly, introducing an acid solution into the sample injection needle by using an acid solution cleaning device to clean the solution to be detected remained on the inner side wall of the sample injection needle, and then, introducing cleaning water into the sample injection needle by using the water cleaning device to clean the sample injection needle again. Thus, the sample injection needle can sample the solution in other containers, and the cleaned sample injection needle cannot pollute the solution in other containers.
Drawings
FIG. 1 is a schematic diagram showing an exploded structure of an automatic sample feeding device of an inductively coupled plasma mass spectrometer according to one embodiment of the present invention;
fig. 2 is a schematic structural diagram of an automatic sample feeding device of an inductively coupled plasma mass spectrometer according to another embodiment of the present invention.
Reference numerals:
10. the device comprises a sample injection needle, 20, a transfer mechanism, 21, a tray frame, 22, a second guide rail, 23, rollers, 24, a first sensing hole, 25, a second sensing hole, 26, a first clamping part, 27, a second clamping part, 28, a sliding block, 29, a third guide rail, 30, a lifting mechanism, 40, a clamping mechanism, 41, a chassis, 42, a first guide rail, 43, a pressing plate, 44, a first pressure sensing module, 50, a cushion block, 60, a second pressure sensing module, 70, an acid solution cleaning device, 80, a water cleaning device, 91, a first pipeline, 92, a second pipeline, 100 and a container.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present invention, it will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
In one embodiment, as shown in fig. 1 or 2, an automatic sample injection device of an inductively coupled plasma mass spectrometer comprises a sample injection needle 10, a transfer mechanism 20 and a lifting mechanism 30. The transfer mechanism 20 is used for transferring the container 100 containing the solution to be detected to the lower part of the sample injection needle 10. The lifting mechanism 30 is used for driving the sample injection needle 10 to lift, so that the sample injection needle 10 can be inserted into the container 100.
In the automatic sample injection device of the inductively coupled plasma mass spectrometer, the to-be-detected solution in the container 100 is not required to be transferred out of the special sample solution test tube, but the container 100 provided with the to-be-detected solution is directly placed on the transfer mechanism 20, the container 100 is transferred to the lower part of the sample injection needle 10 by the transfer mechanism, and then the sample injection needle 10 is inserted into the container 100 by the lifting mechanism 30, so that the inductively coupled plasma mass spectrometer can sample the to-be-detected solution in the container 100. Compared with the traditional manual sample injection mode, the automatic sample injection device of the inductively coupled plasma mass spectrometer has higher automation degree and improved sample injection efficiency; in addition, in the sample injection process, the solution to be detected does not need to be close to the sample, so that the human health is not affected.
Specifically, the automatic sample feeding device of the inductively coupled plasma mass spectrometer further comprises a clamping mechanism 40. The clamping mechanism 40 is used for clamping the container 100, and the transfer mechanism 20 is used for driving the clamping mechanism 40 to move. Thus, after the clamping mechanism 40 clamps the container 100, the transfer mechanism 20 drives the clamping mechanism 40 to transfer the container 100 to the lower part of the sample injection needle 10.
Further, referring back to fig. 1, the clamping mechanism 40 includes a chassis 41 for placing the container 100, a plurality of first rails 42, a plurality of pressing plates 43, and a plurality of first driving mechanisms. The first guide rail 42 is connected with the chassis 41, and the first guide rail 42 is circumferentially spaced around the edge of the chassis 41. The pressing plates 43 are arranged in a one-to-one correspondence with the first guide rails 42, and the pressing plates 43 are slidably arranged on the first guide rails 42. The first driving mechanisms are in one-to-one correspondence with the pressing plates 43, and are used for driving the pressing plates 43 to move along the first guide rail 42. In this way, when the container 100 is placed on the chassis 41, the first driving mechanism drives the pressing plate 43 to approach the chassis 41, so that the container 100 can be clamped and fixed on the chassis 41. After the solution in the container 100 is injected, the first driving mechanism drives the pressing plate 43 away from the chassis 41, and the pressing plate 43 releases the container 100 on the chassis 41, so that the container 100 on the chassis 41 can be taken out. The clamping mechanism 40 described above advantageously and more conveniently clamps and secures containers 100 of different sizes. Specifically, the first driving mechanism may be a motor screw driving mode, or may be a driving mode such as an air cylinder, a hydraulic cylinder, an oil cylinder, etc.
Further, the auto-sampling device of the inductively coupled plasma mass spectrometer further comprises a plurality of first pressure sensing modules 44. The first pressure sensing modules 44 are disposed in one-to-one correspondence with the pressing plates 43, and the first pressure sensing modules 44 are used for sensing the pressure applied by the pressing plates 43 to the side wall of the container 100. In this way, the first pressure sensing module 44 senses the pressure applied by the pressing plate 43 to the side wall of the container 100, when sensing that the pressure applied by the pressing plate 43 to the side wall of the container 100 exceeds a preset value, the first driving mechanism can be controlled to stop driving the pressing plate 43 to move towards the chassis 41, so that the phenomenon that the container 100 is damaged due to the fact that the pressing plate 43 is pressed against the container 100 by too large acting force is avoided, and the clamping and fixing effects of the pressing plate 43 on the container 100 are good. Specifically, the pressing plate 43 is used for facing the side surface of the container 100 to be matched with the side wall of the container 100, so that the pressing plate 43 can clamp and fix the container 100 more firmly when pressing on the side wall of the container 100.
Specifically, the transfer mechanism 20 includes a tray frame 21, a second guide rail 22, and a second driving mechanism. The chassis 41 is detachably mounted on the tray frame 21, and the tray frame 21 is slidably disposed on the second rail 22. The second driving mechanism is used for driving the tray frame 21 to move along the second guide rail 22. In addition, the second guide rail 22 is provided with a plurality of rollers 23, the tray frame 21 is provided on the rollers 23, and the tray frame 21 is driven by the rollers 23.
Further, the second guide rail 22 is provided with a first sensing hole 24 corresponding to the position of the sample injection needle 10, and the tray frame 21 is provided with a second sensing hole 25 corresponding to the first sensing hole 24. The second driving mechanism is used for stopping driving the tray frame 21 when the second sensing hole 25 is aligned with the first sensing hole 24. Thus, when the second sensing hole 25 is aligned with the first sensing hole 24, the second driving mechanism stops driving the tray frame 21, and the container 100 on the chassis 41 is located below the sample injection needle 10, and the lifting mechanism 30 lowers the sample injection needle 10 into the container 100, so that the sampling operation can be performed, and the degree of automation is high.
Further, the plurality of tray frames 21 are provided, the tray frames 21 are arranged on the second guide rail 22 in a row, and adjacent tray frames 21 are detachably connected. In this way, the plurality of clamping mechanisms 40 can be disposed on the plurality of tray frames 21, the plurality of clamping mechanisms 40 can clamp the plurality of containers 100, and the second driving mechanism pushes the plurality of tray frames 21 to move on the second guide rail 22, so that the containers 100 corresponding to the tray frames 21 are respectively transferred to the lower part of the sample injection needle 10, and the sample injection operation on the plurality of containers 100 can be realized in sequence. Specifically, one side of the tray frame 21 is provided with a first clamping portion 26, and the other side of the tray frame 21 is provided with a second clamping portion 27 matched with the first clamping portion 26. The adjacent tray frames 21 are connected in a detachable manner through mutual clamping of the first clamping parts 26 and the second clamping parts 27. In addition, the adjacent tray frames 21 may be connected by bolts.
In another embodiment, referring again to fig. 2, the transfer mechanism 20 further includes a slider 28, a third guide rail 29, and a third driving mechanism. The slider 28 is slidably disposed on the third rail 29. The clamping mechanism 40 is provided in plurality and at intervals on the slider 28. The third driving mechanism drives the slider 28 to move along the third guide rail 29.
Further, the automatic sample injection device of the inductively coupled plasma mass spectrometer further comprises a cushion block 50 and a second pressure sensing module 60. The cushion block 50 is arranged at the bottom of the sample injection needle 10. The second pressure sensing module 60 is configured to sense a pressure of the pad 50 against the bottom wall of the container 100. In this way, the spacer 50 can ensure that a space is formed between the sample injection needle 10 and the bottom wall of the container 100, and prevent the liquid suction port of the sample injection needle 10 from contacting the bottom wall of the container 100, so as to prevent the sample injection needle 10 from sucking sediment at the bottom of the container 100. In addition, the second pressure sensing module 60 can sense the pressure of the cushion block 50 to the bottom wall of the container 100, so that when the pressure of the cushion block 50 to the bottom wall of the container 100 exceeds a preset value, the lifting mechanism 30 stops acting, thereby avoiding the needle head of the sample injection needle 10 from being crushed. Specifically, the washing liquid port of the sample injection needle 10 is provided with a filtering membrane. After the filtering membrane filters the solution, fine particles in the dirty liquid can be prevented from being sucked into the inductively coupled plasma mass spectrometer by the sample injection needle 10. Wherein the length of the cushion block 50 is 4 mm-6 mm, and the filtering membrane can be a filtering membrane with the aperture of 0.20 um-0.30 um.
Further, referring back to fig. 1, the auto-sampling device of the inductively coupled plasma mass spectrometer further comprises an acid solution cleaning device 70 and a water cleaning device 80. The sample injection needle 10 is connected to the acid solution cleaning device 70 and the water cleaning device 80 through a first pipeline 91. The sample injection needle 10 is also adapted to be connected to a solution receiver in the inductively coupled plasma mass spectrometer via a second conduit 92. Thus, after the sample needle 10 sucks the solution to be detected, the sample needle 10 is moved out of the container 100 by the lifting mechanism 30. The acid solution is firstly introduced into the sample injection needle 10 by the acid solution cleaning device 70 to clean the solution to be detected remained on the inner side wall of the sample injection needle 10, and then the cleaning operation is performed on the sample injection needle 10 again by introducing cleaning water into the sample injection needle 10 by the water cleaning device 80. Thus, the sample injection needle 10 can sample the solution in the other containers 100, and the cleaned sample injection needle 10 cannot pollute the solution in the other containers 100.
In one embodiment, the pressing plate 43, the chassis 41, the tray 21, the cushion block 50, the first rail 42, the second rail 22, and the third rail 29 are made of polytetrafluoroethylene materials, or other plastic materials capable of resisting acid and alkali corrosion.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. An automatic sample injection device of an inductively coupled plasma mass spectrometer, comprising: the device comprises a sample injection needle, a transfer mechanism, a lifting mechanism and a clamping mechanism; the transfer mechanism is used for transferring a container for accommodating the solution to be detected to the lower part of the sample injection needle; the lifting mechanism is used for driving the sampling needle to lift so that the sampling needle can be inserted into the container; the clamping mechanism is used for clamping the container, the transfer mechanism is used for driving the clamping mechanism to move, and the clamping mechanism comprises a chassis for placing the container, a plurality of first guide rails, a plurality of pressing plates and a plurality of first driving mechanisms; the first guide rail is connected with the chassis, and the first guide rail is circumferentially arranged at intervals around the edge of the chassis; the pressing plates are arranged in one-to-one correspondence with the first guide rails, and are slidably arranged on the first guide rails; the first driving mechanisms are in one-to-one correspondence with the pressing plates and are used for driving the pressing plates to move along the first guide rails;
the pressure sensor comprises a container, a pressing plate, a plurality of first pressure sensing modules and a plurality of second pressure sensing modules, wherein the first pressure sensing modules are arranged in a one-to-one correspondence with the pressing plate and are used for sensing the pressure applied by the pressing plate to the side wall of the container;
the device also comprises a cushion block and a second pressure sensing module, wherein the cushion block is arranged at the bottom of the sample injection needle; the second pressure sensing module is used for sensing the pressure of the cushion block to the bottom wall of the container.
2. The automated sample introduction device of an inductively coupled plasma mass spectrometer of claim 1, wherein the transfer mechanism comprises a tray frame, a second rail, and a second drive mechanism, the chassis is detachably mounted on the tray frame, the tray frame is slidably disposed on the second rail, and the second drive mechanism is configured to drive the tray frame to move along the second rail.
3. The automatic sample introduction device of the inductively coupled plasma mass spectrometer according to claim 2, wherein the second guide rail is provided with a first induction hole corresponding to the position of the sample introduction needle, and the tray is provided with a second induction hole corresponding to the first induction hole; the second driving mechanism is used for stopping driving the tray frame when the second sensing hole is aligned with the first sensing hole.
4. The automated sample introduction device of an inductively coupled plasma mass spectrometer of claim 2, wherein the plurality of tray racks is provided, the tray racks are arranged on the second guide rail in a row, and adjacent tray racks are detachably connected.
5. The automated sample introduction device of an inductively coupled plasma mass spectrometer of claim 1, wherein the transfer mechanism further comprises a slider slidably disposed on the third rail, a third rail, and a third drive mechanism disposed on the slider in a plurality of spaced apart relation, the third drive mechanism driving the slider to move along the third rail.
6. The automatic sample injection device of the inductively coupled plasma mass spectrometer according to any of claims 1 to 5, further comprising an acid solution cleaning device and a water cleaning device, wherein the sample injection needle is connected with the acid solution cleaning device and the water cleaning device through a first pipeline; the sample injection needle is also used for being connected with a solution receiver in the inductively coupled plasma mass spectrometer through a second pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310601.2A CN107887250B (en) | 2017-12-11 | 2017-12-11 | Automatic sample feeding device of inductively coupled plasma mass spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711310601.2A CN107887250B (en) | 2017-12-11 | 2017-12-11 | Automatic sample feeding device of inductively coupled plasma mass spectrometer |
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| CN107887250A CN107887250A (en) | 2018-04-06 |
| CN107887250B true CN107887250B (en) | 2024-01-26 |
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| CN108872357B (en) * | 2018-09-19 | 2021-06-15 | 内蒙古蒙牛乳业（集团）股份有限公司 | Mass spectrometry detection method |
| CN113281444A (en) * | 2021-06-21 | 2021-08-20 | 江苏赫尔斯检测技术有限公司 | Method for determining heavy metals in cosmetics by inductively coupled plasma mass spectrometer |
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