Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the first purpose of the present invention is to provide a plasma device to realize the rapid mass spectrometry detection of forbidden additives in children's toys.
The second purpose of the invention is to provide a rapid mass spectrometry detection device for quality inspection of children toys.
The third purpose of the invention is to provide a rapid mass spectrometry detection method for quality inspection of children toys.
A fourth object of the invention is to propose a computer device.
A fifth object of the invention is to propose a non-transitory computer-readable storage medium.
In order to achieve the above object, a first embodiment of the present invention provides a plasma device, including:
the in-situ ionization ion source is used for ionizing an object to be detected; the in-situ ionization ion source comprises an insulation pipeline, a high-voltage alternating current system and an insulation shell, wherein the insulation pipeline is arranged in the insulation shell, and the high-voltage alternating current system is arranged at one end of the insulation pipeline; the high-voltage alternating current system is selectively switched on or switched off according to actual requirements;
the paper chip sample introduction system comprises a paper chip, a first scroll, a second scroll, a first pulley and a second pulley;
furthermore, the paper chip is sequentially wound on the first reel, the first pulley, the second pulley and the second reel;
further, the first reel, the second reel, the first pulley and the second pulley are respectively disposed on the insulating housing at intervals, wherein the first pulley and the second pulley are disposed between the first reel and the second reel.
In an embodiment of the present application, the plasma apparatus further includes an auxiliary gas delivery system for delivering a gas required for generating the plasma to the in-situ ionization ion source; wherein, the auxiliary air supply system is connected with the other end of the insulating pipeline.
In the embodiment of the application, the paper chip comprises a sample loading area and a hydrophobic area, wherein the sample loading area is arranged at the central position of the paper chip, and the hydrophobic area is arranged at the periphery of the sample loading area; the paper chip is used for bearing the object to be tested.
In the embodiment of the application, the high-voltage alternating current system is selectively turned on or off according to actual requirements, wherein when the object to be measured is a non-polar substance, the high-voltage alternating current system is turned on, and the in-situ ionization ion source is a low-temperature plasma ion source; when the low-temperature plasma ion source is formed, the gas required by the low-temperature plasma ion source is air, helium, argon and other gases, and the air, the helium and the argon are supplied to the insulating pipeline through an auxiliary gas supply system;
further, when the object to be detected is a polar substance, the high-voltage alternating current system is closed, and the in-situ ionization ion source is a zero-voltage paper spray ion source.
In the embodiment of the application, the paper chip sampling system is an automatic stepping paper chip sampling system, wherein a motor is arranged in the first scroll or the second scroll, and the motor is electrically connected with the first scroll or the second scroll.
In order to achieve the above object, a second embodiment of the present invention provides a rapid mass spectrometry device for quality inspection of children toys, comprising:
the plasma device is the plasma device provided in the embodiment of the first aspect, and the plasma device is used for ionizing an object to be measured; and
and the mass spectrometer is used for analyzing the ionized substance to be detected so as to obtain an analysis result.
In order to achieve the above object, a third aspect of the present invention provides a rapid mass spectrometry detection method for quality inspection of children toys, comprising the following steps:
extracting an object to be detected on the surface of the sample to be detected by an extracting agent;
ionizing the object to be tested by a plasma device, wherein the plasma device is the plasma device as claimed in any one of claims 1 to 4, and the object to be tested is dripped into the sample loading area of the paper chip;
and analyzing the ionized substance to be detected by a mass spectrometer to obtain an analysis result.
In the embodiment of the application, the high-voltage alternating current system is selectively switched on or off according to actual requirements, wherein,
when the object to be detected is a non-polar substance, the high-voltage alternating current system is opened, and the in-situ ionization ion source is a low-temperature plasma ion source; when the low-temperature plasma ion source is formed, the gas required by the low-temperature plasma ion source is air, helium, argon and other gases, and the air, the helium and the argon are supplied to the insulating pipeline through an auxiliary gas supply system;
further, when the object to be detected is a polar substance, the high-voltage alternating current system is closed, and the in-situ ionization ion source is a zero-voltage paper spray ion source.
In order to implement the foregoing embodiments, a fourth aspect of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the method according to any one of the above descriptions when executing the computer program.
In order to implement the above embodiments, the fifth aspect of the present invention also proposes a non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method according to any one of the above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A plasma apparatus, an apparatus for quality inspection of a child toy, and a method according to embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a plasma apparatus according to an embodiment of the present invention.
To solve the problem, an embodiment of the present invention provides a plasma apparatus for performing analysis and detection in a manner of combining in-situ ionization and a paper chip technology, and as shown in the drawing, the plasma apparatus includes:
the in-situ ionization ion source is used for ionizing an object to be detected; the in-situ ionization ion source comprises an insulation pipeline, a high-voltage alternating current system and an insulation shell, wherein the insulation pipeline is arranged in the insulation shell, and the high-voltage alternating current system is arranged at one end of the insulation pipeline; the high-voltage alternating current system is selectively switched on or switched off according to actual requirements;
the paper chip sample introduction system comprises a paper chip, a first scroll, a second scroll, a first pulley and a second pulley;
furthermore, the paper chip is sequentially wound on the first reel, the first pulley, the second pulley and the second reel;
further, the first reel, the second reel, the first pulley and the second pulley are respectively disposed on the insulating housing at intervals, wherein the first pulley and the second pulley are disposed between the first reel and the second reel.
In an embodiment of the present application, the plasma apparatus further includes an auxiliary gas delivery system for delivering a gas required for generating the plasma to the in-situ ionization ion source; wherein, the auxiliary air supply system is connected with the other end of the insulating pipeline.
FIG. 2 is a schematic structural diagram of a paper chip according to an embodiment of the present invention;
in the embodiment of the application, the paper chip comprises a sample loading area and a hydrophobic area, wherein the sample loading area is arranged at the central position of the paper chip, and the hydrophobic area is arranged at the periphery of the sample loading area; the paper chip is used for bearing the object to be tested.
In the embodiment of the application, the high-voltage alternating current system is selectively turned on or off according to actual requirements, wherein when the object to be measured is a non-polar substance, the high-voltage alternating current system is turned on, and the in-situ ionization ion source is a low-temperature plasma ion source; when the low-temperature plasma ion source is formed, the gas required by the low-temperature plasma ion source is air, helium, argon and other gases, and the air, the helium and the argon are supplied to the insulating pipeline through an auxiliary gas supply system;
further, when the object to be detected is a polar substance, the high-voltage alternating current system is closed, and the in-situ ionization ion source is a zero-voltage paper spray ion source.
In the embodiment of the application, the paper chip sampling system is an automatic stepping paper chip sampling system, wherein a motor is arranged in the first scroll or the second scroll, and the motor is electrically connected with the first scroll or the second scroll.
In order to achieve the above object, a second embodiment of the present invention provides a rapid mass spectrometry device for quality inspection of children toys, comprising:
the plasma device is the plasma device provided in the embodiment of the first aspect, and the plasma device is used for ionizing an object to be measured; and
and the mass spectrometer is used for analyzing the ionized substance to be detected so as to obtain an analysis result.
In order to achieve the above object, a third aspect of the present invention provides a rapid mass spectrometry detection method for quality inspection of children toys, comprising the following steps:
extracting an object to be detected on the surface of the sample to be detected by an extracting agent;
ionizing the object to be tested by a plasma device, wherein the plasma device is the plasma device as claimed in any one of claims 1 to 4, and the object to be tested is dripped into the sample loading area of the paper chip;
and analyzing the ionized substance to be detected by a mass spectrometer to obtain an analysis result.
In the embodiment of the application, the high-voltage alternating current system is selectively switched on or off according to actual requirements, wherein,
when the object to be detected is a non-polar substance, the high-voltage alternating current system is opened, and the in-situ ionization ion source is a low-temperature plasma ion source; when the low-temperature plasma ion source is formed, the gas required by the low-temperature plasma ion source is air, helium, argon and other gases, and the air, the helium and the argon are supplied to the insulating pipeline through an auxiliary gas supply system;
further, when the object to be detected is a polar substance, the high-voltage alternating current system is closed, and the in-situ ionization ion source is a zero-voltage paper spray ion source.
It should be noted that the foregoing explanation of the embodiment of the fast mass spectrometry detection method for quality inspection of children toys is also applicable to the fast mass spectrometry detection apparatus for quality inspection of children toys of this embodiment, and is not repeated herein.
In order to make the present application more understandable to those skilled in the art, a fast mass spectrometry detection device for quality inspection of children toys is taken as an example;
the method and apparatus of embodiments of the present invention are described below with reference to the accompanying drawings.
The device and the method combine a low-temperature plasma in-situ ionization method, a zero-voltage paper spray ionization and a paper chip technology and are assisted by an air supply system, and mainly overcome the defects of high flux and simplicity in toy product detection in the prior art.
In an embodiment of the invention, a plasma device, a device and a method for quality inspection of children toys comprise an ion source part, a stepping paper chip sample feeding system and an auxiliary gas feeding system. The ion source is used for ionizing an object to be detected, the stepping paper chip sampling system is used for high-flux sampling, and the auxiliary gas supply system is used for generating and stabilizing plasma. The analysis and detection are carried out by combining the in-situ ionization and the paper chip technology, and the device is combined with the mass spectrum, so that a reliable analysis result can be quickly obtained.
Particularly, the application of in-situ ionization enables mass spectrometry to be simple, convenient and quick in the using process, and greatly shortens the analysis time; the in-situ ionization method finally obtains the low-temperature plasma ion source or the zero-voltage paper spray ion source. The advantages of this approach over other ion sources are: the good ionization efficiency can be achieved no matter whether the object to be detected is polar or nonpolar.
Furthermore, a stepping paper chip sample feeding system in the ion source ensures high flux of sample analysis, and an auxiliary gas feeding system is beneficial to formation and stability of low-temperature plasma;
specifically, a high-voltage alternating current system in the ion source can be selectively started to form a low-temperature plasma ion source or a zero-voltage paper spray ion source.
In particular, the invention may also have the following additional technical features:
in the embodiment of the invention, a paper chip device with paper chromatographic separation capacity is constructed by patterned printing of a hydrophobic substance on paper, the purposes of preventing sample diffusion and pre-enrichment can be achieved, and the method can be used for rapid pretreatment, separation and analysis of banned added substances in toys;
specifically, the paper chip sample introduction system comprises a sample loading area and a peripheral hydrophobic area, which can effectively prevent a sample from diffusing and enhance a mass spectrum signal;
furthermore, the paper chip sample introduction system is of an automatic stepping type, and a sample loading area can be updated after detection is finished and is reserved for next analysis; the paper chip can be recovered and replaced after being used.
In the embodiment of the invention, the power supply can be selectively turned on according to the property of the object to be detected, and the ion source can be switched between two modes: the transmission type low-temperature plasma ion source or the zero-voltage paper spray ion source achieves the purpose of jointly detecting different types of analytes.
In the embodiment of the invention, the auxiliary gas supply system can be supplied with rare gases such as helium, argon and the like so as to achieve the purpose of soft ionization. If the conditions do not allow, air can be continuously pumped to generate plasma;
specifically, the gas required for the low-temperature plasma ion source is not limited to gases such as helium and argon, and when the conditions are not satisfied, the purpose of analysis can be achieved by supplying air through the auxiliary air supply system.
In the embodiment of the invention, the plasma device, the device for quality inspection of the children toys and the method mainly comprise the steps of extracting a sample to be tested on the surface of the toy by using an extracting agent, dripping an extraction liquid on an upper sample region, ionizing by using the plasma device, and then analyzing the ionized sample to be tested by using a mass spectrum.
The plasma device proposed according to the embodiment of the present invention, which is designed for a rapid mass spectrometry detection method of prohibited additives in a children's toy, is described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a plasma apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a paper chip according to an embodiment of the present invention;
as shown in fig. 1 and fig. 2, the apparatus mainly includes an in-situ ionization ion source 10, a step-by-step paper chip sampling system 20 and an auxiliary gas supply system 30;
the in-situ ionization ion source comprises an insulating pipeline 101, an alternating current circuit 102 for providing high-voltage alternating current, a plasma 103 and an insulating shell 104;
the step-by-step paper chip sample introduction system comprises two reels 201 for storing paper chips 202 in a large scale, a small motor contained in the reel 201 for automatically switching a paper chip sample introduction area 2021 to achieve the purpose of high-flux detection in continuous detection, and a pulley 203 for changing the direction of the paper chips;
the auxiliary gas supply system 301 is connected to the end of the insulating pipeline 101 and supplies gas required for generating plasma to the in-situ ionization ion source portion.
When the object to be measured is a non-polar substance, the alternating current circuit 102 and the auxiliary gas supply system 301 can be opened, and plasma 103 is generated at the moment;
specifically, the 301 auxiliary gas delivery system is only used to generate the low temperature plasma ion source:
further, when the auxiliary gas supply system works, once the alternating current circuit 102 is started, a low-temperature plasma probe is generated, and a low-temperature plasma ion source is formed;
further, the in-situ ionization ion source has the function of ionizing a sample to be detected if the sample is dripped into the sample loading area.
As shown in fig. 1 and fig. 2, the apparatus in the embodiment of the present application further includes a mass spectrometer for analyzing the analyte; aligning an ion source with a mass spectrum sample inlet so that ions enter a mass spectrum from the mass spectrum sample inlet for analysis;
specifically, a sample to be detected is ionized by an in-situ ionization ion source to form ions to be detected; the ions to be detected are transmitted to the mass spectrum through the sample inlet for analysis;
specifically, the sample loading area is located at the 2021 part of the paper chip 202, and the 2022 part is a hydrophobic substance to prevent the liquid to be detected from diffusing; aligning the plasma 103 with the sample loading region 2021 to prepare for mass spectrometry, wherein the formed structure is a transmission type low-temperature plasma ion source;
further, when the object to be measured is a polar substance and is easily ionized by an electric spray, the alternating current circuit 102 and the auxiliary gas supply system 301 can be turned off, and no plasma 103 is generated at this time; the solution to be tested is directly loaded on the loading area 2021, and the mass spectrum can be started for testing, and the structure formed at this time is a zero-voltage paper spray ion source.
FIG. 3 shows the results of stability testing of an embodiment of the present invention;
as shown in fig. 3, after five consecutive injections are performed by using the standard substance, the signal response of the ion flow graph is extracted, and the relative standard deviation of the five responses is calculated to be 0.03, which indicates that the method has good stability.
FIG. 4 is a graph of the quantitative relationship of an embodiment of the present invention;
in order to verify the effectiveness of the method for quantifying the forbidden additives, a series of standard solutions with concentration are detected and tested, and a curve graph of mass spectrum peak intensity along with the concentration can be obtained;
in particular, R of the variation profile obtained in the manner described2The coefficient is larger than 0.99, which shows that the sample ionization method can effectively ionize the sample and output a mass spectrum intensity signal corresponding to the sample concentration.
FIG. 5 is a second-order mass spectrum of a surface plasticizer of a plastic toy according to an embodiment of the present invention; in the embodiment of the invention, the working process is as follows:
firstly, extracting forbidden additives on the surface of a toy sample by using an extracting agent;
then, the extract is recovered and dripped into the sample loading area 2021, the high-voltage alternating current system 102 is selectively started according to the property of the object to be detected, if the high-voltage alternating current system is started, plasma 103 is generated and acts on the sample loading area 103 to ionize the object to be detected; if the high-voltage alternating current system 102 is not started, the sample loading area 103 is directly aligned to the sample inlet of the mass spectrometer, and then ionization can be directly carried out;
and finally, analyzing the ionized sample to be detected by mass spectrometry.
FIG. 6 is a schematic diagram of a process for detecting prohibited additives on the surface of a plastic toy according to an embodiment of the present invention;
in the embodiment of the invention, the specific working process is as follows:
firstly, extracting the surface of a toy sample by using an extracting agent to obtain liquid drops to be detected;
secondly, after the liquid drops to be detected are added to the sample loading area of the paper chip, judging whether to start a low-temperature plasma ion source or not according to the properties of the liquid drops to be detected;
if the low-temperature plasma ion source is started, the sample is ionized under the action of the low-temperature plasma probe, wherein ions enter the mass spectrum and are driven by the kinetic energy of the low-temperature plasma probe and the negative pressure in the mass spectrometer;
if the low-temperature plasma ion source is not started, a zero-voltage paper spraying mode is adopted, wherein liquid drops to be detected enter a mass spectrum under the driving of negative pressure in the mass spectrometer, and the liquid drops to be detected are gradually broken in the process of being transmitted into the mass spectrum, so that sample ionization is completed;
and finally, analyzing the ionized sample to be detected by mass spectrometry.
Specifically, the paper chip is used for assisting in sample loading and bearing liquid to be tested, each sample loading area is analyzed once, and after analysis, the next sample loading area is switched to wait for the next test.
In order to implement the foregoing embodiments, the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the computer device implements the method as described in any one of the foregoing.
In order to implement the above embodiments, the invention also proposes a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method as described in any of the above.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.