25results about How to "Improve ionization efficiency" patented technology

The utility model relates to a spiral inductive coupling coil for plasma generation, which comprises an external coil, a grounding copper sheet, a vacuum capacitor and a radio frequency connection copper sheet, the external coil surrounds and is sleeved on an ionization cavity, the input end of the external coil is connected with a grounding end through the grounding copper sheet, the output end of the external coil is provided with the vacuum capacitor, and the vacuum capacitor is connected with the radio frequency connection copper sheet. The vacuum capacitor is connected to the radio frequency end RF through the radio frequency connecting copper sheet, compared with the prior art, the plasma device is applied to the plasma device, the coil diameter D1 of the external coil is increased, the large surrounding diameter D2 is adopted in the surrounding mode of the external coil, the number of turns of the coil is reduced, the vacuum capacitor is additionally arranged between the radio frequency end RF and the external coil, and therefore the vacuum capacitor is not prone to being damaged. Therefore, the ionization efficiency is improved, the plasma concentration and energy can be effectively improved, and more free radicals are provided for the process for process treatment.

The present invention relates to the field of sugar biochemical analysis, and discloses the application of 2-nitro-4-carboxyphenylhydrazine (NCPH) alone as a reactive matrix and in combination with 2,5-dihydroxybenzoic acid (DHB) (NCPH / DHB) for derivatization qualitative and quantitative detection of reducing sugars. NCPH has a hydrazine reactive group, and as a reactive matrix, it is easy to react with the hemiacetal end of reducing sugars, which can significantly improve its ionization efficiency; it can also assist in the ionization of reducing sugars, and the excess NCPH does not need to be separated. DHB is an organic acid that can greatly catalyze the derivatization reaction and further improve the detection effect of reducing sugars. After NCPH is combined with DHB, a truly complete derivatization detection of reducing sugars with a derivatization yield of more than 99% can be achieved at a reaction temperature of 55°C; it can also significantly improve the co-crystallization uniformity with the analyte, and improve the accuracy of quantitative detection of reducing sugars.

The invention discloses a micro-spray ionization device, comprising a sealed housing, a sample introduction mechanism, a spray needle, a high voltage connection mechanism and a reflection electron microscope; the sealed housing is sealed and connected to the inlet end of a mass spectrometer and a sealed cavity is formed inside the sealed housing, the sample introduction mechanism is sealed and installed in the sealed housing and one end is connected to a sample input pipeline; the spray needle is installed in the sample introduction mechanism and the angle between the spray needle and the center line of the inlet of the mass spectrometer is between 0 and 90 degrees, the distance between the needle tip of the spray needle and the inlet of the mass spectrometer is 2 to 30 mm, the high voltage connection mechanism is electrically connected to the spray needle and the power supply respectively; the reflection electron microscope is arranged in the sealed cavity and faces the inlet of the mass spectrometer, and the reflection electron microscope is electrically connected to an external adjustable power supply. The atomization efficiency of the micro-spray ionization device is greatly improved, and 100% ion collection can be achieved, and the measurement sensitivity is greatly improved, and it is particularly suitable for micro-sprays with a flow rate of less than 10 microliters / minute.

This invention relates to a multi-stage interception and automatic impurity removal wastewater treatment device, comprising: an impurity removal chamber, wherein a filter screen is provided inside the impurity removal chamber and a filter screen cleaning mechanism is provided on the outer side wall; a collection chamber, wherein an opening and closing mechanism is formed inside; and a disinfection chamber, wherein a disinfection mechanism is provided inside. The beneficial effects of this invention are: by providing a multi-stage filter screen with progressively smaller pore sizes at the top of the impurity removal chamber, the device's removal effect on solid impurities in wastewater is enhanced; by providing a filter screen cleaning mechanism, the self-cleaning ability of the filter screen is improved, solving the problems of easy clogging and time-consuming and laborious filter screen cleaning in traditional water treatment equipment, effectively improving the automation level and continuous operation capability of the device; by providing a disinfection mechanism, the air intake of the device and the probability of air ionization are increased, improving the air ionization efficiency, thereby increasing the concentration of active purification components in the disinfection gas; making disinfection more thorough and effective, and improving the disinfection effect of the device.

This invention relates to a kit for the quantitative detection of IGF-1 and its preparation and detection method. The kit includes calibrators, quality control materials, internal standard solution, immunoenrichment solution, dissociation solution, elution solution, mobile phase 1, and mobile phase 2. This invention enables fully automated top-down detection of intact IGF-1 protein, significantly improving sample processing efficiency. The matrix solution used in the kit preparation employs human serum with endogenous IGF-1 removed, maximally mimicking the in vivo environment and reducing detection bias caused by different matrix components. The elution buffer uses a formic acid-hydrochloric acid mixed acid-acetonitrile system. This system provides a mild ionization environment through formic acid, and the synergistic effect of hydrochloric acid in stabilizing the solution pH reduces ion inhibition effects, improves the IGF-1 response signal, and thus enhances the signal-to-noise ratio of the detection.

The utility model provides an ion migration tube to solve the problem of how to improve the ionization effect of an ion migration tube using an ultraviolet lamp type ionization source on substances. The ion migration tube provided by the utility model comprises a sample introduction piece, an ionization assembly, an ion gate assembly, a migration assembly and an ion receiver, the sample introduction piece is provided with a sample introduction port; the ionization assembly comprises a base body and at least two ultraviolet lamps connected to the base body, the base body is provided with an ionization area, the sample inlet is communicated with the ionization area, and the at least two ultraviolet lamps are circumferentially distributed on the periphery of the ionization area; the migration assembly is provided with a migration area, the ion gate assembly is arranged between the ionization area and the migration area, and the ion receiver is arranged on the side, away from the ion gate assembly, of the migration area.

The invention relates to the technical field of low-temperature plasmas, in particular to a semi-open all-dielectric barrier discharge low-temperature plasma ionization source device which comprises a sample tube, a jet tube and an ion area, one end of the sample tube is provided with a sample input end, the other end of the sample tube is a closed end, and the jet tube penetrates through the closed end. A receiving opening is formed in the end, located on the inner side of the cavity of the sample pipe, of the jet pipe, and the other end of the jet pipe is connected with an ion area arranged on the outer side of the jet pipe through an output opening; according to the in-situ ionization device, the technical means of a semi-open structure, filling of a cavity with low-temperature plasma, bidirectional jet flow, directional jet flow paths and the like are combined, and the in-situ ionization device is suitable for in-situ ionization of irregular, low-concentration and difficult-to-volatilize solids; and the ionization efficiency, the signal intensity and the detection sensitivity are obviously improved.

The utility model discloses a microwave plasma reaction system, including: frame, microwave resonance cavity, assembles on the frame, microwave source device, assembles to the microwave resonance cavity outer wall, is used for to microwave resonance cavity inside microwave feed -in, quartz tube, from top to bottom through microwave resonance cavity setting, it has the reaction section in microwave resonance cavity, gas inlet component, with one end of quartz tube intercommunication, is used for the gas into, assembly spare, be located in the quartz tube, along the axial direction of quartz tube and extend to the reaction section, needle body, be located in the reaction section, perpendicular the axial arrangement of quartz tube, set up a plurality of, a plurality of needle body assembly spare is arranged along the axial direction of quartz tube and arranges, blanking component, with another end of quartz tube intercommunication, is used for discharging processing material, the microwave plasma reaction system that the utility model proposes, through microwave energy to gas ionization, can high -efficient production plasma, to material processing effect is good.

The invention discloses a method and system for optimizing two-dimensional argon plasma uniformity by introducing a high-energy particle source, and the method comprises the steps: S1, filling a plasma reaction chamber with background gas, and simulating the distribution of neutral particles; s2, initializing the speed and the position of charged particles in the gas in the chamber, enabling the charged particles to be uniformly distributed in the chamber, and determining the intensity, the time sequence, the incident direction and the incident position of high-energy particles emitted by an external particle source; s3, calculation of charged particle density, potential and electric field; s4, calculating the force acting on the charged particles; s5, moving the charged particles; s6, checking and executing collision; and S7, repeating the steps S3 to S6, adjusting the high-energy particle injection time sequence until a steady state is reached, and obtaining the data distribution of the charged particles. Through controllable interaction between an external particle source and plasma or background gas, seed electrons-ions are actively generated in a specific space area or energy distribution is changed, and inherent space non-uniformity of the plasma is compensated.

The present application relates to an ion source gas supply structure and an ion source device, including: an airflow loop arranged around an anode component, and an outlet arranged on the anode component and connected to the airflow loop; wherein the outlet is distributed along the middle of the anode component; the airflow loop is connected to an external process gas, and the process gas is transported to each of the outlets, and is led out from the middle of the anode component through the outlet. This technical solution transports the process gas to each of the outlets and leads it out from the middle of the anode component, so that the process gas can be more fully reacted in the ionization chamber, thereby improving the ionization efficiency of the ion source, avoiding process gas deposition, and reducing corrosion to the protective device on the upper part of the magnet.

The utility model relates to the technical field of air treatment, particularly provides a plasma generation module, a plasma generation device and an air conditioner, and aims to solve the problems of low sterilization and peculiar smell removal efficiency, larger occupied space, high cost and the like of sterilization and peculiar smell removal equipment in the prior art. In order to achieve the purpose, the plasma generation module comprises at least one plasma generation assembly, each plasma generation assembly comprises a first electrode, a second electrode and an insulating medium layer, the first electrodes and the second electrodes are arranged on the two sides of the insulating medium layers respectively, and the first electrodes and the second electrodes are attached to the insulating medium layers respectively. When the plasma generating assembly is powered on to operate, the first electrode and the second electrode are opposite in electrical property. Through the arrangement of the first electrode, the second electrode and the insulating medium layer, a relatively uniform electric field can be formed, plasma can be generated through ionization, air can be sterilized and deodorized at the same time, and a relatively good effect can be obtained.

This invention belongs to the field of analytical testing and discloses a laser ionization source tissue sample detection device, including a laser, a light guide arm, a mounting platform, and an ionization cavity. The ionization cavity comprises an ionization chamber and an ion source, forming a hollow chamber. The mounting platform is installed within the hollow chamber of the ionization cavity and has a sample-carrying platform with a clamping device. The laser's emission port is connected to one end of the light guide arm, and the other end of the light guide arm extends above the sample-carrying platform. A lens or optical fiber is installed inside the light guide arm to achieve lossless laser transmission. Utilizing the advantages of the light guide arm and three-dimensional displacement stage, it achieves high-sensitivity, precise operation, efficient ionization, and accurate positioning, enabling the laser to be used at various distances, achieving efficient ionization and high-sensitivity mass spectrometry detection of tissue samples such as biological tissues, animal and plant tissues, and clinical sample slides.

The present invention proposes a method for analyzing aqueous humor based on a titanium oxide nanomaterial matrix, and the specific steps are as follows: titanium oxide nanomaterials and deionized water are configured into a material dispersion solution, wherein the mass volume ratio of titanium oxide nanomaterials to deionized water is in the range of 1-2 g / L, 1-2 μL of aqueous humor sample is deposited on a target plate, and after the sample is dried, 1-2 μL of material dispersion solution is applied thereon, and then the sample is subjected to MALDI-TOF-MS mass spectrometry analysis to obtain a metabolic fingerprint map, and then the method of machine learning is used to distinguish patients with cataracts related to different diseases. The present invention realizes the collection of metabolic fingerprint maps of aqueous humor samples by preparing a binary laser / desorption ionization matrix with high ionization efficiency, and can quickly distinguish cataracts related to senility, diabetes, and high myopia by combining the means of machine learning, and has broad application prospects for distinguishing cataracts related to different diseases and exploring the molecular mechanism of cataracts.

The application relates to a plasma generating device, belonging to the technical field of plasma. The device comprises multiple plasma generators (11), each of which is provided with a plasma tube (29). The plasma tube (29) comprises an outer electrode tube (21) and an inner electrode tube (24), and the outer electrode tube (21) and the inner electrode tube (24) are connected to two poles of a high-voltage power supply. The device is characterized in that: the positive electrode tube and the negative electrode tube are sleeved to form a tubular discharge area, the discharge area is closed at both ends to form a gas fluid channel (28), and the outer electrode tube (21) is provided with a flow port (20) for the gas to enter and flow out of the fluid channel (28). In the plasma generating device, the fluid channel is formed in the plasma tube and is closed at both ends, and the fluid channel is the discharge area formed by the positive electrode and the negative electrode, so that the ionization efficiency of air passing through the discharge area can be greatly improved, the density of generated plasma is higher, and the plasma is more stable.

The utility model discloses a combined air conditioner, relates to the technical field of air conditioners, and aims to solve the problem that a combined air conditioner in the prior art is low in indoor air cleanliness adjusting effect. The combined air conditioner comprises a machine shell, an air conditioning device, an air guiding piece and an air purifying device. A containing cavity, an air inlet and an air outlet are formed in the machine shell, and the air inlet and the air outlet communicate with the containing cavity. The air conditioning device is arranged in the containing cavity and used for adjusting the quality of air entering the containing cavity. The air guide piece is connected to the outer side of the machine shell, an air guide channel is formed in the air guide piece, and the air guide channel communicates with the air outlet and is used for guiding air in the containing cavity into a room; a mounting hole communicated with the outside of the air guide channel is formed in the side wall of the air guide channel; the air purification device is connected to the air guide piece and comprises an ionization part, and at least part of the ionization part stretches into the air guide channel through the mounting hole and is used for ionizing water molecules in air into water ions. The combined air conditioner is used for adjusting the indoor air quality.

The invention relates to an application of a metal semiconductor material as a matrix in laser desorption ionization mass spectrometry detection, a method for detecting a sample by using the matrix, a kit containing the matrix, a mass spectrometry sample target plate doped with the matrix, a method for preparing the mass spectrometry sample target plate and a kit for detecting the sample by using the matrix. The invention also relates to a method for detecting a sample by using the mass spectrum sample target plate.

A plasma tube and plasma generator belong to the field of plasma technology. It includes a positive electrode tube and a negative electrode tube, which are respectively connected to the two poles of a high-voltage power supply. A discharge region is formed between the positive and negative electrode tubes. The key feature is that the positive and negative electrode tubes are inner and outer sleeved to form a tubular discharge region. The two ends of the discharge region are closed to form a gas fluid channel. Openings for gas entry and exit from the fluid channel are formed on the outer surface of the sleeved positive and negative electrode tubes. In the plasma tube of this application, a closed-end fluid channel is formed between the positive and negative electrode tubes. This fluid channel simultaneously serves as the discharge region formed by the positive and negative electrodes. Therefore, the width of the discharge region formed between the positive and negative electrode tubes is small, which can greatly improve the ionization efficiency of air passing through the discharge region, resulting in a higher and more stable plasma density, and reducing energy consumption.

The present application relates to ionization source in analytical instrument, specifically, it is a kind of high-efficiency spatial focusing VUV ionization source, including hollow closed cylindrical cavity, VUV lamp and convex lens and ion exit are respectively arranged at the both ends of closed cylindrical cavity;VUV lamp, convex lens, cylindrical cavity and ion exit are sequentially arranged;Sample inlet is arranged at the side of closed cylindrical cavity near convex lens;Ionization reaction focusing zone is arranged in the inside of closed cylindrical cavity;At least one ion transmission zone is arranged in the inside of closed cylindrical cavity, near the side of ion exit, and the ion transmission zone is composed of two pairs of cylindrical electrodes;Tail gas outlet is arranged at the side of closed cylindrical cavity, between cylindrical electrode and cylindrical electrode;Ion extraction electrode is arranged at the side of closed cylindrical cavity;The ionization source and mass spectrum or ion mobility spectrum are combined, and the focal size of ion can be reduced, and the ion transmission efficiency and detection sensitivity when passing through sampling micropore are improved.

The invention discloses a multistage cusped field thruster for focusing plume. The multistage cusped field thruster is characterized in that the outer wall of a main discharge structure is sleeved with a plurality of sections of permanent magnets; the tail end face of the anode structure is perpendicular to the axis of the main discharge structure, the axis of the anode structure and the axis of the discharge structure are coaxial, and the center point of the tail end face of the anode structure coincides with the highest point of the magnetic field intensity of a cusped magnetic field corresponding to the first-stage permanent magnet at the axis. Wherein the permanent magnet closest to the inlet end of the main discharge structure serves as a first-stage permanent magnet; the multiple wedge-shaped ring structures are fixedly installed in the main discharging structure in the axial direction. The wedge-shaped ring structure is preferably arranged from the permanent magnet at the tail (i.e., downstream) of the main discharge structure. According to the channel configuration, the defects of an existing thruster plume optimization technology can be overcome, the engineering technical problem of hollow plume of the thruster is fundamentally solved (the plume divergence efficiency can be improved by about 30%), and cusped magnetic field thrusters of different power levels can be universally applied.

The application discloses a furnace tube for plasma enhanced thin film deposition, comprising: a process tube, a reaction chamber and at least one ionization chamber are arranged in the process tube; a gas supply tube, the gas supply tube is used for conveying process gas to be ionized to the ionization chamber, after the process gas to be ionized is ionized in the ionization chamber, the process gas enters the reaction chamber to deposit corresponding thin film on the surface of a substrate or to realize layer-by-layer growth of the thin film on the surface of the substrate through adsorption reaction; a first electrode and a second electrode are located in the process tube and at the middle position of the ionization chamber, wherein the first electrode and / or the second electrode are supported by a baffle, one end of the baffle is connected with the corresponding electrode, and the other end of the baffle is connected with the inner wall of the ionization chamber, so that the process gas to be ionized passes between the first electrode and the second electrode. The application improves the ionization efficiency of the process gas.

The application discloses a kind of organic matter and heavy metal element simultaneously ionization spray extraction-microwave plasma ion source, comprising: three-way pipe, the three-way pipe includes vertically arranged ionization channel and extraction channel;The side of the ionization channel is equipped with microwave plasma source, the other side is connected with mass spectrometer;Sample introduction joint, sample solution is injected into sample introduction joint, and the sample gas obtained after being atomized by auxiliary gas is introduced into extraction channel;Extraction liquid introduction joint, mixed extraction liquid is injected into extraction liquid introduction joint, and the extraction gas obtained after being atomized by auxiliary gas is introduced into extraction channel and mixed with sample gas, and the mixed extraction liquid includes EDTA and at least one of methanol or acetonitrile.The technical scheme is fast, the operation step is simple, the sample detection flux can be improved, and has very high practicality and economic benefits in actual application.

The invention belongs to the technical field of material analysis, and provides a method for rapidly detecting the migration quantity of chloropropanol compounds in cigarette paper, which comprises the following steps: carrying out a water phase migration experiment on a cigarette paper sample to be detected to obtain a migration liquid; adding deuterated chloropropanol into the migration liquid, mixing with an internal standard stock solution, and carrying out salting-out auxiliary liquid-liquid extraction, dehydration purification and nitrogen blowing concentration to obtain a liquid to be detected; a gas chromatography-tandem mass spectrometry method is adopted to measure the to-be-measured liquid, a chromatographic column is an ultra-high inert bonded polyethylene glycol capillary chromatographic column, and data are collected in a multi-reaction monitoring mode; the migration amount of the chloropropanol compounds in the sample is calculated through an internal standard method, and the chloropropanol compounds comprise 1, 3-dichloro-2-propanol and 3-chloro-1, 2-propylene glycol. The method does not need a derivatization step, is high in detection accuracy, and can realize rapid detection and batch analysis.

The present invention relates to the field of nanomaterials and mass spectrometry, and more specifically, to a functionalized ITO chip material and its application in mass spectrometry. The functionalized ITO chip material of the present invention has both surface nanostructure and excellent light-to-heat conversion efficiency. Compared with before functionalization, the desorption / ionization efficiency of the chip material in laser desorption / ionization mass spectrometry (LDI-MS) analysis is significantly improved, and can be used as a substrate for surface-assisted laser desorption / ionization in the spectrum formed by mass spectrometry analysis. It can be applied to both positive ion and negative ion mass spectrometry detection modes, has almost no background interference (m / z<500), and has a high spectrum signal-to-noise ratio, and can be used for mass spectrometry analysis of small molecule compounds with a molecular weight of less than 3000Da.

The invention discloses a furnace end capable of improving flaming stability. The furnace end comprises a shell with an inner cavity and N plasma combustion assemblies arranged in the shell. The deceleration blocks distributed in the gas inlet pipe in a staggered manner are used for decelerating the gas flow, so that the retention time of the gas in the plasma combustion assembly is prolonged, and the ionization efficiency and the plasma generation quality are improved; the first flow blocking ring in the fire spraying pipe and the second flow blocking ring at the upper end of the electrode needle can block direct impact of airflow, so that the airflow flows upwards in a more stable state, concentration increase of plasma near the electrode needle is facilitated, and plasma jet flow can be stably sprayed out; the conductive pipe and the air inlet pipe are integrated stainless steel fittings, so that the integrated stainless steel fittings are manufactured through a mold, only a relatively simple and standardized process of mold forming needs to be completed, batch production can be realized, and the production period can be greatly shortened.

The invention discloses a plasma liquefaction device, belonging to the field of plasma technology. The bottom of the upper convex ring is provided with multiple groups of arc-shaped fans, the lower convex ring is provided with multiple groups of slots matched with the arc-shaped fans, and the sides of the slots are provided with locking slots matched with the horizontal part; the two sides of the ionization frame are provided with penetrating swing slots, the middle part of the rotating shaft is provided with symmetrical swing gears, and the swing arm is provided with a driving slot matched with the swing slot; a sliding seat is movably installed in the sliding slot, the middle part of the lifting arm is provided with an engaging column matched with the swing slot and the driving slot, the bottom of the lifting arm is movably provided with a rotating arm, and multiple groups of electrode rods are provided on the mounting plate. The present invention can fully stir the reactants through the fan blades, and the scraper will scrape the inner wall of the cylinder in a cycle. When the arc-shaped fan is inserted into the slot, the moving block will retract into the sliding cavity. When the horizontal part is inserted into the locking slot, the extrusion part will lock the inner wall and the vertical part of the slot, and this design improves the sealing effect.