3225 results about "Mass analyzer" patented technology

The invention relates to the technical field of batteries, and discloses a battery thermal runaway early warning and cooling system which comprises a multi-parameter monitoring module, a data processing and early warning model and a cooling system control module. Wherein the multi-parameter monitoring module is used for acquiring the internal resistance value of each battery monomer in real time in a battery charging process, calculating the internal resistance range, the internal resistance standard deviation and the variable coefficient according to the internal resistance value at a sampling time point, monitoring the working environment gas of the battery through a mass spectrometer, and acquiring the real-time mass spectrum monitoring data of the gas in real time; release characteristics, including hydrogen, hydrocarbon compounds and the like, of escaped gas are quantitatively analyzed on the basis of an equivalent characteristic spectrum method. According to the battery thermal runaway early warning and cooling system, various key parameters in the battery charging process are comprehensively monitored, early warning of the battery thermal runaway risk is achieved, timely intervention is conducted in combination with the cooling system, the thermal runaway risk is reduced, and vehicle and personal safety is guaranteed.

The invention relates to the technical field of cross-modal data fusion analysis of soil component detection and improvement agent preparation, in particular to a preparation method of a soil improvement agent based on component detection, which comprises the following steps: acquiring soil component data through a near infrared spectrometer, a high performance liquid chromatograph and an inductively coupled plasma mass spectrometer; an incremental principal component analysis algorithm is combined with an oscillation suppression function to update a covariance matrix in real time, a dynamic defect factor priority list is generated, a multi-objective optimization model improved based on NSGA-II is guided to integrate the soil pH value, humidity and organic matter content to construct a dose response curved surface, and a Pareto optimal solution set is solved. A sensor array collects environment feedback data, drives a transfer learning algorithm to calibrate parameters, a dynamic incidence matrix attenuation rate and optimal weight adaptive adjustment, iteratively outputs a modifier synergistic effect solution set through a closed-loop control mechanism, and solves the problems of difficult data fusion, principal component weight offset and component synergistic deviation. And the proportioning accuracy and stability are improved.

The invention relates to the technical field of mass spectrum analysis, in particular to an analysis method and system for improving the spectrum quality of a mass spectrum. The method comprises the following steps: scanning a sample by using a mass spectrometer, collecting original mass spectrogram data, and preprocessing the original mass spectrogram data; based on the preprocessed original mass spectrum data, identifying potential peak positions through a multi-scale Gaussian fitting technology, and screening out candidate peaks by calculating the signal-to-noise ratio of each peak; fitting each screened candidate peak by using an asymmetric Gaussian function model, and describing the shape of the candidate peak; and constructing a mass offset correction model to correct the mass spectrum data, and performing super-resolution processing on the corrected mass spectrum data by using a convolutional neural network model. According to the design, peak fitting is carried out by adopting a multi-scale Gaussian fitting technology, a signal-to-noise ratio screening mechanism and an asymmetric Gaussian function model.

The invention discloses a standard volume-based mass spectrum signal calibration system and method, and belongs to the field of measurement, the standard volume-based mass spectrum signal calibration system comprises a standard flow generation system and a mass spectrum detection system.The standard flow generation system comprises a standard tank, a first valve, a fifth valve and a micro-leakage valve which are sequentially connected through a gas pipeline; a gas inlet pipeline, a film gauge and a first molecular pump set are connected to a gas pipeline connecting the first valve and the fifth valve in parallel, a second valve is installed on the gas inlet pipeline, and a fourth valve is installed at an inlet of the first molecular pump set. The mass spectrometry detection system comprises a vacuum chamber communicated with the micro-leakage valve through a gas pipeline, a mass spectrometer, a second molecular pump set and a full-scale gauge are connected to the vacuum chamber, and a gate valve is installed at an inlet of the second molecular pump set. The gas release rate can be calculated and continuously adjusted on the premise that a leak hole is not needed, and the problems that in the prior art, a standard leak hole is limited in application range, low-flux measurement is inaccurate, the nominal leak rate is prone to drifting, and cost is high are solved.

The invention belongs to the technical field of aircraft oil leakage monitoring, and relates to an aircraft oil leakage detection method based on a high-sensitivity mass spectrometry technology, and the method comprises the steps: obtaining a time-resolved mass spectrogram of aviation kerosene molecules in a sample testing stage, and storing the time-resolved mass spectrogram in a database; then oil gas molecules are captured at leakage-prone points of an aircraft pipeline system through a gas collection probe, the captured oil gas molecules are transmitted to an ion source end of a proton transfer reaction mass spectrometer through a negative pressure transmission system to be ionized to generate ions, and the ions are analyzed by a mass analysis system to obtain a mass spectrum; comparing the mass spectrogram obtained by analysis with a time-resolved mass spectrogram in a database, and judging whether leakage occurs or not; based on the method, the problems of insufficient anti-interference capability, difficulty in sample collection and the like of a high-sensitivity mass spectrum oil gas leak detection method can be solved in a targeted manner, and the functions of environmental interference suppression, efficient collection of oil gas molecules, improvement of spatial scanning resolution and the like can be realized at the same time.

The invention discloses a method for determining the purity of electronic-grade hexafluoroethane, and relates to the technical field of the purity of hexafluoroethane, and the method comprises the following steps: vacuumizing a specific sampling container to 10 <-3 > Pa to 10 <-2 > Pa, forming a super-hydrophobic coating on the inner wall, sampling in a temperature-controlled, humidity-controlled and pressure-controlled environment, and removing water and impurities through two-stage pretreatment; enhancing analysis by using a gas chromatograph, a specific carrier gas, a column temperature program, a micro-fluidic chip and an ion mobility spectrometry; then secondary scanning analysis is carried out by using a mass spectrometer double ion source and a calibration system; and finally, learning and matching an algorithm through a data processing system machine. Samples can be accurately collected and pretreated, gas chromatography and mass spectrometry analysis is more accurate and efficient, a data processing system can accurately determine impurities and purity, multiple measurement data can be counted and analyzed, the result reliability is improved, all parts of the system are optimized and matched, the accuracy and stability of the whole process are guaranteed, and the purity is calculated; the method further comprises statistical analysis of multiple measurement data.

The invention discloses an inductively coupled plasma mass spectrometer with an automatic sample injection structure, and particularly relates to the technical field of mass spectrometers, the inductively coupled plasma mass spectrometer comprises a mass spectrometer body, and a mounting table is mounted at the bottom of one side of the mass spectrometer body; a sample introduction disc is mounted on the mounting table, and a plurality of test tube bodies are limited on the sample introduction disc. According to the switching sampling mechanism, sampling work is completed on solutions in the test tube bodies when the sampling tube moves up and down, and the sampling disc is synchronously driven to complete active rotation switching when the sampling tube moves up and resets, so that continuous active switching sampling operation on the test tube bodies on the sampling disc is completed, the sampling efficiency is improved, and the sampling time is shortened. Manual operation of technicians is not needed, time and labor are saved, the shielding mechanism is additionally arranged on the sample introduction disc and used for shielding the tops of the multiple test tube bodies, external impurities are prevented from falling into the test tube bodies, meanwhile, the shielding mechanism and the sample introduction switching mechanism are linked, and the whole sampling work is safely and stably carried out.

The invention provides a method for simultaneously detecting various micro-plastics in water, and belongs to the technical field of micro-plastic detection. The method comprises the steps of sample pretreatment, thermal cracking-gas chromatography-mass spectrometer measurement, qualitative analysis and quantitative analysis. The method comprises the following steps: taking a water sample, uniformly shaking, filtering with a filter membrane, taking the filtered filter membrane, adding acetone, carrying out ultrasonic elution, washing the filter membrane, and collecting an eluent; adding acetone into the eluted filter membrane, carrying out ultrasonic elution again, washing the filter membrane, collecting the eluent, combining the two eluents, heating and concentrating in a water bath, adding acetone, ultrasonically mixing, transferring into a cracking cup, heating and volatilizing, and determining by a thermal cracking-gas chromatography-mass spectrometer. Carrying out qualitative analysis through analysis of cracking products with different types of micro-plastic characteristics, and then carrying out quantification through an external standard method; the method provided by the invention can accurately quantify the six microplastics in the effluent, and has the advantages of simple pretreatment, small sampling amount, high accuracy and lowest detection limit of 0.012 [mu] g / L.

The invention discloses an industrial gas production monitoring system based on data processing, and relates to the technical field of online monitoring, and the industrial gas production monitoring system comprises a data acquisition module which uses a plurality of sensors with determined positions to acquire real-time parameters in the industrial gas production process; the raw material gas detection module is used for acquiring raw material gas data through various sensors arranged at a raw material gas inlet and a raw material gas outlet and carrying out raw material quality detection on the raw material gas; the parameter monitoring module is used for detecting process parameters of gas production through a temperature sensor, a flow sensor and a pressure sensor; the safety detection module is used for carrying out leakage detection on the industrial gas production device and carrying out factory environment detection by using a multi-gas composite detector; the quality detection module is used for detecting the quality of the produced industrial gas by using a high-sensitivity sensor and a mass spectrometer; and the early warning module is used for carrying out fault detection on the industrial gas production based on all the obtained data and sending out safety early warning according to a fault detection result.

The invention relates to a mass spectrometer ion detector micro-current multistage amplification circuit, which comprises a primary amplification circuit, a voltage following circuit, a secondary amplification circuit, a gain adjustment control circuit and an analog-to-digital conversion circuit, the gain adjustment control circuit can dynamically adjust the gain gears of the first-stage amplification circuit and the second-stage amplification circuit, 16 groups of different amplification gains can be achieved in total, and the application requirement for simultaneous detection of nine orders of magnitude of substances with different concentrations is met. The circuit is simple and reliable, is flexible and convenient to use, greatly widens the detection range of the mass spectrometer, and improves the automatic control level and detection efficiency of the mass spectrometer.

The invention discloses a mass spectrometer electrometer based on a capacitance integrator, and belongs to the technical field of electrometers. Comprising a capacitance integrator, the capacitance integrator is connected with a voltage holding circuit, the voltage holding circuit is connected with an acquisition control circuit and an amplification circuit, and the amplification circuit is connected with the acquisition control circuit; and the acquisition control circuit controls electric signals input into the capacitance integrator, the voltage holding circuit and the amplifying circuit through an I / V conversion control method, so that I / V conversion is completed. The capacitance integration is used for completing I / V conversion, the problem of high-resistance forbidding can be solved, meanwhile, compared with high-resistance conversion, the capacitance integration is adopted, the temperature stability of the electrometer is improved, and noise is reduced.

The invention belongs to the technical field of detection, relates to a free radical detection method, particularly provides a water free radical cation detection method, and aims to realize water free radical cation detection which is efficient, rapid, free of sample pretreatment and convenient to analyze. According to the invention, an LTQ-XL linear ion trap mass spectrometer is used as a detection tool, and a dielectric barrier corona discharge method is adopted to provide a water free radical cation detection method. The method comprises the following steps of: filling argon (Ar) between two discharge electrodes as a working gas, applying a certain voltage to two electrodes of a dielectric barrier discharge ionization source (DBDI), detecting water free radical cations to obtain a corresponding mass spectrum to represent the water free radical cations, and optimizing a target signal to obtain corresponding mass spectrum data. The method can be used for efficiently and quickly detecting the water free radical cations without sample pretreatment and the like, is convenient to analyze and apply, and has remarkable innovativeness and wide application prospects.

The invention discloses a single-cell metabolite spectrum quantitative analysis platform and method based on droplet microfluidics, and relates to the technical field of mass spectrometry. The platform comprises a fluid pumping module, a cell oscillation module, a microfluidic mixed liquid drop generation module, a microfluidic mixed liquid drop reinjection and separation module and a mass spectrometry module. The fluid pumping module comprises a high-pressure nitrogen cylinder and a gas pressure driver; the cell oscillation module comprises a cell oscillator; the micro-fluidic mixed droplet generation module comprises a micro-fluidic droplet generation chip, a cell lysis solution, an internal standard, an oil phase, a cell suspension and a droplet collection and incubation centrifugal tube; the micro-fluidic mixed liquid drop reinjection and separation module comprises a micro-fluidic liquid drop reinjection and separation chip; and the mass spectrometry module comprises an electrospray needle and a mass spectrometer. According to the method, the single cell is captured and the internal standard substance is introduced at the same time by using droplet microfluidics, and mass spectrometry is carried out, so that high-flux single cell encapsulation and accurate quantification of metabolites are realized.

The invention relates to the technical field of vacuum measurement, in particular to a device for expanding the linear range of mass spectrometry measurement, which comprises a gas transmission pipeline, an electromagnetic valve, a small hole and a mass spectrometer, and is characterized in that the front end of the gas transmission pipeline is used for allowing a sample to be measured to enter, and the rear end of the gas transmission pipeline is connected with the mass spectrometer; the middle part of the gas transmission pipeline is divided into three channels, namely a first gas transmission pipeline, a second gas transmission pipeline and a third gas transmission pipeline; the first electromagnetic valve and the first small hole are sequentially arranged on the first gas transmission pipeline, the second electromagnetic valve and the second small hole are sequentially arranged on the second gas transmission pipeline, and the third electromagnetic valve and the third small hole are sequentially arranged on the third gas transmission pipeline. According to the method, manual dilution or segmented sample injection is not needed, a wide concentration range can be covered by single analysis, more than 60% of time cost is saved, and measurement in a dynamic range of 106 is realized.

ICP-MS includes: an ion source to ionize a sample component; a vacuum chamber (4-into which generated ions are introduced; a cell inside the vacuum chamber to bring the ions into contact with a predetermined gas; a mass spectrometer unit at a later stage of the vacuum chamber to perform mass spectrometry of ions having passed through the cell or ions derived from the ions; a first gas introduction unit to introduce a predetermined gas into the cell; a second gas introduction unit to introduce a predetermined gas into the vacuum chamber and outside the cell; and controllers to control gas introduction such that a gas is introduced by the first gas introduction unit when analysis is performed while bringing a gas into contact with ions, whereas a gas is introduced by the second gas introduction unit when analysis is performed without bringing a gas into contact with ions.

The invention discloses a double-pulse system and method for improving depth resolution of laser ionization mass spectrometry, and relates to the technical field of mass spectrometers, the system comprises a control system for controlling femtosecond laser parameters generated by a femtosecond laser and nanosecond laser parameters of a nanosecond laser; the laser energy regulation and control module is used for carrying out phase adjustment and detection on the input femtosecond laser and outputting the femtosecond laser meeting set parameters based on the femtosecond laser parameters; the light beam shaping and light beam morphology analysis module is used for shaping femtosecond laser and focusing the femtosecond laser on the surface of the sample for laser denudation; the nanosecond laser performs off-resonance multi-photon ionization on the denudated neutral particles to generate ionized ions for mass spectrometry. According to the invention, the depth resolution of the laser ionization mass spectrum can be improved to nanoscale, the ionization efficiency of ions is improved under the condition of reducing the sampling amount, and meanwhile, the sensitivity of an instrument and the accuracy of quantitative analysis are improved.

Systems or techniques are provided for facilitating intelligent maintenance for scientific instruments. In various embodiments, a scientific instrument can comprise a chromatograph-equipped mass spectrometer. In various aspects, the scientific instrument can determine, based on an electronic counter or readback sensor associated with the chromatograph-equipped mass spectrometer failing to satisfy a threshold, whether performance of a maintenance task on the chromatograph-equipped mass spectrometer is warranted. In various instances, the scientific instrument can schedule, in response to a determination that the performance of the maintenance task is warranted, a time or date for the performance of the maintenance task, wherein the time or date can be predicted by a machine learning model based on an operational history of the chromatograph-equipped mass spectrometer. In various cases, the scientific instrument can prepare for the performance of the maintenance task, by adjusting, prior to the time or date, actuatable hardware of the chromatograph-equipped mass spectrometer.

A pesticide residue extraction solution adapted for a rapid extraction method of stock solution of agricultural products and a pesticide residue detection method in agricultural products. The pesticide residue extraction solution includes acidic solution and acetone solution. The rapid extraction method includes homogenizing the agricultural product sample, to obtain a homogenized sample; mixing the pesticide residue extraction solution with the homogenized sample to form a sample solution; and subsequently using a column filled with mixed powder to filter out the water and impurities from the sample solution, thereby obtaining a stock solution of the agricultural product. The method for detecting agricultural product pesticide residues includes using the rapid extraction method to obtain the stock solution of agricultural product, and to directly input the stock solution of the agricultural product into a liquid chromatography tandem mass spectrometer or a gas chromatography tandem mass spectrometer for pesticide residue detection.

The invention relates to the technical field of instruments and meters, in particular to an inductively coupled plasma mass spectrometer system for intelligent data processing and report generation. Comprising a sample introduction unit, a plasma excitation and ionization unit, a mass analyzer and detection unit, a vacuum system unit and an intelligent data processing and report generation unit. Efficient ionization is achieved through a bipolar radio frequency switching and AI optimized reaction gas plasma source, the AI optimization module monitors in real time and dynamically adjusts parameters so that the ionization efficiency can be stabilized at 92% + / -2%, and meanwhile a reaction gas control system can optimize plasma conditions to suppress interference ions. And the mass analyzer and the detection unit realize high-precision ion separation by utilizing AI interference correction and a QMS-TOF double analyzer mode, and an interference elimination module can automatically eliminate polyatomic ion interference, so that the ionization efficiency, the analysis precision and the accuracy are improved, the interference is effectively inhibited, and the analysis capability of the system on a complex sample is enhanced.

To improve the performance of a mass spectrometer.SOLUTION: An ion trap type mass spectrometer that ionizes a sample adhering to a test object and separates ions on the basis of the mass and charge, comprises: a heating unit 1 which heats and vaporizes a sample; a sample introduction tube 10 which introduces the sample vaporized by the heating unit 1 to an ion source 15; the ion source 15 which applies a charge to the sample; a container 210 whose inside is in the vacuum state; a first pore 51 which introduces the sample ionized by the ion source 15 to the container 210; an ion trap unit 300 which is provided in the container 210; and a second pore 71, an intermediate lens 90 and an adjustment lens 110 which are sequentially provided between the first pore 51 and the ion trap unit 300 and transports the ions being the sample introduced to the container 210 to the ion trap unit 300. In the adjustment lens 110, the amount of ions passing through the adjustment lens 110 is controlled by a control unit connected to the mass spectrometer.SELECTED DRAWING: Figure 1

The invention relates to the technical field of mass spectrometer stability detection, in particular to clinical mass spectrometer key performance stability detection equipment which comprises a box body, a box cover is hinged to the top of the box body, a height adjusting mechanism is fixedly connected to the middle of the bottom in the box body, and a buffer mechanism is hinged to the top of the height adjusting mechanism. By arranging the buffering mechanism, in the carrying process, the side buffering assembly on each face in the frame body groove body plays an important role, when the device body is impacted and moves towards one side, the side buffering spring on the side is extruded for preliminary buffering, the spring on the other side is stretched for further buffering, and no matter which direction is impacted, the buffering effect is good. Compared with the prior art, the mass spectrometer stability testing device has the advantages that the device can play a good buffering and protecting role in the mass spectrometer stability testing process, obviously, the device is convenient to carry and use flexibly, can conveniently cope with mass spectrometer stability tests in different scenes during use, has good protection performance, and can better adapt to the mass spectrometer stability tests due to the height-adjustable design.

A three-dimensional laser ablation mass spectrometer, a combined detection system, and a detection method. The three-dimensional laser ablation mass spectrometer comprises a laser ablation system, a detection cell, a grinding and polishing system, and a mass spectrometry detection apparatus. The combined detection system comprises a three-dimensional laser ablation mass spectrometer and a Raman laser system. The detection method comprises: performing detection on a sample and then performing sample surface grinding and polishing on the sample. By means of introducing mechanical grinding and polishing, a thermal change layer generated on a surface of a sample due to laser ablation is removed, the high efficiency of laser ablation is utilized, and a possible effect of energy at a focus point during laser ablation on detection is also eliminated.

The invention provides a battery packaging assembly and soft package battery in-situ detection and gas production analysis equipment, and relates to the technical field of soft package battery detection.The battery packaging assembly is characterized in that a lower cover plate and an upper cover plate are detachably connected, a sealing cavity is formed between the lower cover plate and the upper cover plate, and at least one of the lower cover plate and the upper cover plate is provided with a windowing area; the windowing area is arranged in the sealing cavity, and the flexible film for sealing the sealing cavity is arranged in the windowing area, so that the soft package battery can be conveniently installed in the sealing cavity in a sealing manner, in-situ detection can be directly performed on the soft package battery, and gas generation in a chemical process can be supported under the condition that the sealing performance is ensured. The lower cover plate and the upper cover plate are both made of polytetrafluoroethylene materials or polyimide materials, are insulated and resistant to high temperature and have extremely low absorption efficiency on X rays and neutrons, and interference on imaging is reduced. And the generated gas can be collected through the gas bag, so that the gas sampling is safer, and the subsequent mass spectrometer analysis is facilitated.

The invention discloses a helium detection device and method for the airtightness of a bonding interface and a bonding microcavity, and belongs to the field of the airtightness of MEMS devices. The device comprises a sample holder, a mass spectrometer, a molecular pump, a mechanical pump and other components, helium is used as detection gas, and the helium is leaked only through a bonding interface through a customized and processed test sample and sample holder structure, so that the interference of other leaks in a non-bonding area on a test result is avoided. The testing method comprises the steps of sample introduction, vacuum pumping, helium filling, signal detection, dynamic and steady state testing and the like, the helium leak rate is monitored in real time by combining with a helium mass spectrometer, and the minimum leak detection rate is that high-sensitivity air tightness detection is ensured. According to the method, the airtightness of the bonding interface can be independently evaluated, and a reliable basis is provided for development of a novel bonding process. The method is suitable for air tightness detection and evaluation of the bonding process in MEMS device processing and manufacturing.

An integrated sample processing system including an analyzer and a mass spectrometer is disclosed. The integrated sample processing system can perform multiple different types of detection, thereby providing improved flexibility and better accuracy in processing samples. The detection systems in the sample processing system may include an optical detection system and a mass spectrometer.

The invention discloses a leak detection test system for a cabin door sealing element. The leak detection test system comprises a visual sealing box, a gas supply mechanism, a temperature control system, a helium mass spectrometer and a DIC test system, an adjustable clamp used for fixing a sealing piece is installed in the visual sealing box, a loading head is installed in the visual sealing box and abuts against the sealing piece, and an inner cavity of the visual sealing box is divided into a high-pressure cabin and a low-pressure cabin by the loading head and the sealing piece; the air supply mechanism communicates with the hyperbaric cabin through a pipeline and is used for adjusting the air pressure of the hyperbaric cabin; the temperature control system is used for adjusting the temperature of the hyperbaric cabin; the helium mass spectrometer is communicated with the low-pressure cabin; and the D IC test system is used for capturing and analyzing the deformation condition of the sealing element. According to the invention, the deformation condition of the sealing element under different temperature and pressure conditions can be captured and analyzed, the sealing performance of the sealing element can be accurately evaluated, and the leak detection efficiency and accuracy of the sealing element are improved by comprehensively applying multiple technical means, so that the detection is more comprehensive and reliable.

A method of mass spectrometry comprising: a) providing a mass spectrometer having a time of flight (TOP) mass analyser: b) performing a survey scan comprising separating a packet of precursor ion species and mass analysing ions so as to obtain first mass spectral data: c) determining a time window over which one of the precursor ion species. or fragment or product ions derived therefrom, were mass analysed: d) separating another packet of precursor ion species and mass analysing ions so as to obtain second mass spectral data. wherein the pusher of the TOP mass analyser is pulsed according to a plurality of consecutive pulse sequences during a plurality of respective pulse sequence time periods. wherein each pulse sequence consists of consecutive pushes that are arranged such that the duration between any pair of pushes in the pulse sequence is different to the duration between any other pair of pushes within the pulse sequence: f) selecting mass spectral data, from the second mass spectral data, that was obtained during a time period corresponding to said time window of the survey scan, so as to obtain selected data; g) repeating steps d) to f) at least one further time such that multiple sets of said selected data are obtained; combining said multiple sets of selected data and decoding the combined data to obtain mass spectral data representative of the mass to charge ratios of the ions detected by the TOP mass analyser.

The invention provides a mass spectrometer operation state monitoring method, system and device and a medium, and relates to the technical field of fault monitoring, and the method comprises the steps: collecting environment parameters in a mass spectrometer operation environment, carrying out the vacuum degree influence analysis of a mass spectrometer according to the environment parameters, and obtaining vacuum degree influence parameters; analyzing the mass axis offset influence of the mass spectrometer according to the environmental parameters to obtain mass axis offset parameters; testing to obtain an actual vacuum degree influence parameter and an actual mass error parameter of the mass spectrometer, performing state influence verification by combining the vacuum degree influence parameter and the mass axis offset parameter, and processing to obtain a vacuum verification coefficient and a mass verification coefficient; and according to the vacuum verification coefficient and the quality verification coefficient, performing fusion state anomaly analysis on the vacuum degree influence parameter and the quality axis offset parameter to obtain a state anomaly coefficient, and performing fault judgment and early warning. The technical problem that fault early warning is not timely in the monitoring process of the operation state of the mass spectrometer in the prior art is solved.

The invention discloses an atomization mechanism for a plasma mass spectrometer, and relates to the technical field of atomizers, the atomization mechanism comprises an atomization cup, an atomization head and a sample introduction hopper which are respectively arranged at two openings of the atomization cup, a transmission mechanism arranged in the atomization cup, and an atomization nozzle communicated with the interior of the atomization cup, the sample feeding hopper is rotationally connected with the inner wall of the atomizing cup, and the transmission mechanism is in transmission connection with the sample feeding hopper; to-be-atomized liquid flows into the sample feeding hopper through the atomizing head; atomized airflow flows into the atomizing cup through the sample injection hopper and can be blown to liquid in the sample injection hopper; the transmission mechanism can drive the sample feeding hopper to rotate under the action of atomized airflow; and the liquid is atomized in the atomizing cup and then is discharged through the atomizing nozzle. In the atomization process, the transmission mechanism can drive the sample feeding hopper to rotate under the action of atomization airflow, powder and particles in liquid raw materials can be well decomposed through rotation of the sample feeding hopper, the stability of the concentration of liquid fed into a plasma light source is guaranteed, and meanwhile the atomizer can be prevented from being blocked.

The invention relates to the technical field of mass spectrometers, and discloses a mass spectrometer tuning method and device, electronic equipment, a storage medium and a program product, and the method comprises the steps: obtaining a tuning parameter data set of a target mass spectrometer, the tuning parameter data set comprising a plurality of tuning parameters and a parameter range corresponding to each tuning parameter; obtaining an optimization target of the target mass spectrometer; based on the tuning parameter data set, the optimization target and a pre-constructed constrained multi-target Bayesian optimization framework, predicting an optimal tuning parameter combination of the optimization target, the optimal tuning parameter combination being used for tuning the target mass spectrometer; the constrained multi-objective Bayesian optimization framework combines Bayesian optimization and multi-objective optimization. According to the invention, multi-objective optimization is carried out based on the constrained multi-objective Bayesian optimization framework, the optimal tuning parameter combination can be automatically generated, simultaneous tuning of multiple parameters of the mass spectrometer is realized, and the tuning performance and precision of the mass spectrometer are improved.