91 results about "Aerosol sampling" patented technology

The invention relates to the technical field of atmospheric biological aerosol sampling and detection, in particular to a particle size resolution type aerosol in-situ sampling and analysis integrated system and method. The system comprises an electrostatic field grading aerosol sampler, a micro-fluidic detection chip based on an immunochromatography principle and an image acquisition and data analysis unit, according to the electrostatic field grading aerosol sampler, biological aerosol particles are electrified through a charge tube, and grading capture according to particle sizes is realized in a stepped electrostatic field; the micro-fluidic detection chip transfers an enriched sample to a multi-layer structure micro-fluidic chip, and a specific reaction is completed based on an immunochromatography principle; and the image acquisition and data analysis unit captures a color developing image through a high-definition camera, and adopts an RGB analysis algorithm to realize quantitative detection. The method realizes full-process automation from sampling to analysis, solves the problems of low efficiency and tedious operation of a traditional method, and has the advantages of high detection speed, high sensitivity, no need of harmful reagents, environmental friendliness and the like.

The invention provides an atmospheric particulate water-soluble ion analysis instrument calibration system and calibration method, and belongs to the technical field of atmospheric particulate measurement. The system comprises an atmospheric environment simulation measurement device and a portable calibration device. The atmospheric environment simulation measurement device simulates actual environmental conditions through an aerosol mixing cabin in a thermotank, and is equipped with various sensors to monitor temperature, air pressure and humidity. The portable calibration device is internally provided with an aerosol generator, a constant-speed diverter, a particle sensor and the like, and an aerosol sample can be generated on site for calibration. The calibration method comprises two parts of constructing a standard parameter database and performing field calibration, and the calibration precision is ensured by comparing a measured value of the particulate matter sensor with a particle size spectrum. According to the calibration system and the calibration method for the atmospheric particulate water-soluble ion analysis instrument, the problems that traditional calibration equipment is large in size and cannot be calibrated on site are solved, and reliable technical support is provided for on-site calibration of the atmospheric particulate water-soluble ion analysis instrument.

This invention relates to the field of aerosol monitoring technology, specifically to an aerosol classification and identification system based on graded filtration and multi-optical parameter detection. The system includes an automatic membrane-changing graded filtration device, a sampling gas path switching device, an optical detection module, and a data processing and control device. The automatic membrane-changing graded filtration device loads multiple nucleopore membranes of different pore sizes and automatically switches them sequentially to achieve stepwise particle size separation of aerosol samples. The optical detection module integrates a cavity ring-down spectroscopy unit and an integrating sphere scattering measurement unit sharing a single laser light source, simultaneously measuring the extinction coefficient and scattering coefficient of the same graded sample. The data processing and control device constructs a matching feature vector based on the current filter membrane pore size and the calculated absorption coefficient, single-scattering albedo, and other optical parameters, compares it with an optical fingerprint database, and outputs the particle type identification result. This invention solves the technical problem of effectively distinguishing mixed aerosol components through dual-dimensional synergistic analysis of particle size and optical parameters, achieving accurate identification of aerosol particle types.

Improved respirator fit test devices including piezoelectric pumps that reduce noise and vibration of the device. The devices may include two or more piezoelectric pumps, wherein a first pump moves sheath air through a differential mobility analyzer and a second pump alternately moves aerosol from inside or outside a respirator through the differential mobility analyzer. A size selected portion of each aerosol sample is then moved through a condensation nuclei counter. Control circuitry enables user selection of a respirator type to be tested, wherein the differential mobility analyzer may be enabled or disabled based on the user selection. The control circuitry further enables calculation of a fit factor corresponding to a quantitative effectiveness of the respirator fitting a user based on signals from the condensation nuclei counter for each aerosol sample.

The embodiment of the present application discloses a kind of method and device for measuring artificial alpha aerosol concentration, the contribution factor of natural alpha to artificial alpha energy region is determined by calibrating calibration sampling filter paper in the environment to be measured without containing artificial alpha aerosol, then real-time detection is carried out to test sample filter paper containing alpha aerosol sample in the environment to be measured, and the real count of artificial alpha energy region is determined by the total alpha count collected and the natural alpha count corresponding to each of the multiple natural alpha energy region intervals previously calibrated, in combination with the contribution factor of natural alpha to artificial alpha energy region in the multiple natural alpha energy region intervals previously calibrated.The method and system fully reflect the influence of radon and thorium daughter on measurement when measuring artificial alpha aerosol concentration, and deduct the count of natural alpha radioactivity signal in the collected radioactivity signal, thereby greatly improving the precision and accuracy of artificial alpha aerosol concentration measurement.

This invention relates to the fields of environmental monitoring and biosafety technology, and in particular to a viral aerosol sampling patch for face masks, comprising: a capture layer for intercepting viral aerosol particles in the air; a culture layer disposed inside the capture layer, the culture layer comprising a culture unit supporting the virus to maintain activity and replicate in the presence of a host, a host bacterium sensitive to the virus, and a visual indicator indicating viral replication or host response; and a base layer disposed inside the culture layer; the sampling patch is fixed to the face mask through the base layer, and viral aerosol collection is achieved without external power through the capture layer, and countable detection results are generated after sampling through the culture layer; utilizing the airflow and humidity conditions naturally formed during wearing, effective interception, activity preservation, and visual detection of viral aerosols are achieved without complex equipment and additional operating steps, and the operation is simple and repeatable.

The invention relates to the technical field of aerosol measurement, in particular to an aerosol sampling and measuring system suitable for a steam flowing system and a control method thereof, and the aerosol sampling and measuring system comprises a primary sampling structure, a secondary sampling structure, a gas filling structure, a full development structure, a discharge structure, a measurement and control host and an aerosol measuring host; the sampling end of the first-stage sampling structure is arranged in a target measurement environment, the gas filling structure is arranged at the downstream of the first-stage sampling structure, a heating sleeve is arranged on the outer side of the gas filling structure, the peripheral wall of the gas filling structure is communicated with an exhaust pipe and a gas injection pipe, and convection is formed between a gas inlet, communicated with the first-stage sampling structure, of the gas filling structure and a gas outlet of the gas injection pipe; the full development structure is arranged at the downstream of the gas filling structure, and the sampling end of the secondary sampling structure is arranged in the full development structure; the discharge structure is disposed downstream of the adequate development structure. According to the invention, a steam condensation phenomenon in a gas mixing process can be effectively avoided, and aerosol constant-speed sampling in a high gas flow rate change range is realized.

The application provides an atmospheric particulate matter water-soluble ion analysis instrument calibration system and a calibration method, and belongs to the technical field of atmospheric particulate matter metrology. The system comprises an atmospheric environment simulation measurement device and a portable calibration device. The atmospheric environment simulation measurement device simulates actual environmental conditions through an aerosol mixing cabin in a thermostat, and is equipped with various sensors to monitor temperature, air pressure and humidity. The portable calibration device is internally provided with an aerosol generator, an equal-speed flow divider, a particulate sensor and the like, and can generate aerosol samples on site for calibration. The calibration method comprises two parts of constructing a standard parameter database and on-site calibration, and ensures calibration accuracy by comparing particulate matter sensor measurement values and particle size spectra. The application adopts the atmospheric particulate matter water-soluble ion analysis instrument calibration system and the calibration method, solves the problem that traditional calibration equipment is large in size and cannot be calibrated on site, and provides reliable technical support for on-site calibration of atmospheric particulate matter water-soluble ion analysis instruments.

The present application belongs to the technical field of aerosol measurement, and particularly relates to a method and system for measuring the surface tension of cloud droplets in the process of aerosol activation into clouds. The method comprises: building a system for measuring the surface tension of cloud droplets, including a cloud condensation nucleus counter, electrode plates, a high-voltage power supply, a condensation nucleus particle counter, and a differential mobility analyzer; applying a high-voltage electric field to cause positive and negative ions in the droplets to split under the traction of the electric field; aerosol samples are converted into droplets by absorbing water vapor in a cloud chamber, and the droplets split under the traction of the high-voltage electric field; the number concentration of the droplets in the outflow sample is measured by the condensation nucleus particle counter; the critical voltage at which the droplets split is obtained by fitting the graph of the number concentration of the droplets versus the voltage intensity; and the surface tension of the droplets is calculated according to the quantitative relationship between the critical voltage and the surface tension of the droplets. The present application can be used in atmospheric chemical transport simulation and climate models to evaluate the influence of the surface tension of cloud droplets on the number concentration and particle size of the cloud droplets.

This invention discloses an aerosol collection device based on electrostatic enrichment, belonging to the field of radiation measurement equipment technology. Based on the easily ionized characteristic of radiation-carrying aerosol particles, multiple sets of electrostatic generators are used to adsorb aerosol particles in the environment, greatly increasing the aerosol density at the sampling port. A low-power fan is then sufficient for aerosol sampling. Because the electrostatic adsorption device gathers aerosol particles in the environment, the sampling flow rate requirement is greatly reduced, thereby reducing reliance on high-power fans or air pumps and significantly reducing equipment power consumption. Furthermore, the two processes within the device operate independently and do not interfere with each other, thus not affecting the aerosol collection efficiency. By redesigning the aerosol collection process and dividing it into two independent processes, the dependence on high-power fans for collection is eliminated.

The invention provides a platform for testing the temperature response characteristic of a biological aerosol sensor, and relates to the technical field of environment monitoring equipment and sensor testing, and the platform comprises an environment control cabin which is used for simulating and maintaining a wide temperature and humidity condition; the to-be-tested biological aerosol sensor interface is arranged in the environment control cabin and is used for accommodating a to-be-tested biological aerosol sensor and carrying out physical and data interface with the to-be-tested biological aerosol sensor; the aerosol generation and transmission system is used for generating and stably conveying standard particles and / or biological aerosol samples with known particle sizes; and the data acquisition and control module is used for synchronously acquiring data of the environment sensor and original data such as particle size, scattered light and multispectral fluorescence output by the bioaerosol sensor to be tested, and realizing automatic control and data storage and analysis in the testing process. According to the method, a reliable data basis can be provided for performance evaluation, temperature response mechanism analysis and adaptive compensation model development of the biological aerosol sensor under different temperature and humidity conditions.

The application relates to the technical field of radiation detection, in particular to a gas chamber suitable for an airborne aerosol sampling and analyzing device, which comprises a gas chamber for inhaling air and an alpha-beta detector in communication with the gas chamber; the alpha-beta detector is used for online analysis of radioactive aerosols; a sampling sheet for collecting a radioactive aerosol sample is arranged in the gas chamber; the gas chamber suitable for the airborne aerosol sampling and analyzing device further comprises a replacement mechanism for fixing the sampling sheet and capable of replacing the sampling sheet. The application designs a gas chamber, integrates the detector, filter paper, air path and replacement mechanism for replacing the filter paper in a small volume structure, has high integration degree, small volume, light weight, easy replacement of the filter paper, is suitable for various detection devices such as fixed type and mobile type, and is especially suitable for airborne detection devices.

A traceable calibration device of particle number (PN) analyzers for vehicle emission includes a particle generation system, used for generating different types of aerosol samples; a solenoid valve system, used for controlling various aerosol samples to quantitatively enter the particle growth system; a particle growth system, used for performing charge classification to obtain doubly-charged-particle aerosol samples, triply-charged-particle aerosol samples and monodisperse aerosol samples, and obtaining grown particle samples by controlling the growth speed of the monodisperse aerosol samples through temperature adjustment; and a particle measurement system, used for measuring electrical current and PN concentration of the grown particle samples. In the present disclosure, the problem of low calibration accuracy of a PN analyzer for vehicle emission in the related art is solved.

A system for the detection of airborne viruses is disclosed. The system comprises at least one local detector, the local detector comprising an aerosol collection module arranged to gather the particulate matter from the aerosol sample onto a collection chip, an analysis module arranged for detecting the amount of the viruses that are part of the particulate matter contained in the collected aerosol sample, and an output module arranged to emit a warning signal when the total viral content surpasses a predetermined threshold.

This invention discloses a vapor-containing enclosed space aerosol sampling and measurement device, comprising: an aerosol sampling tube extending into the enclosed space; a measurement unit connected to the aerosol sampling tube via pipelines; a particle size analyzer connected to the measurement unit; a calibration particle container located at the inlet of the measurement unit; a condensate washing tank, a drying tube, and a flow controller sequentially connected to the measurement unit via pipelines; and an injection and purging pipeline connected to the aerosol sampling tube. Compared to the prior art, in this invention's vapor-containing enclosed space aerosol sampling and measurement device, a three-stage condensate washing tank, a drying tube, and a flow controller are connected downstream of the measuring instrument. This allows for the condensation of vapor in the sampled gas and the filtration of solid dust, ensuring that the air entering the flow controller is low-temperature, dry, and pure. This enables effective control of the sampled gas flow rate, ensuring the accuracy of aerosol concentration and particle size distribution measurements in the vapor-containing mixed sampled gas.

The invention relates to the technical field of mass spectrum detection, in particular to a biological aerosol detecting, sampling and detecting integrated device and a control system, comprising a reconnaissance module for sequentially performing fluorescence characteristic detection and mass spectrum component analysis on single-particle aerosol and generating a judgment signal, and a sampling module which is in signal connection with the reconnaissance module and is used for sampling the single-particle aerosol. The sampling module is used for collecting an aerosol sample in an environment based on the judgment signal, the immunodetection module is in fluid connection with the sampling module and is used for carrying out immunoassay on the sample collected by the sampling module, and the reconnaissance module, the sampling module and the immunodetection module are sequentially connected. And the sampling module controls start and stop based on the judgment signal output by the reconnaissance module. Misjudgment possibly caused by a single detection method is effectively avoided, and more accurate decision support is provided for biological safety guarantee.

This invention relates to a high-efficiency aerosol sampling device and method, belonging to the fields of environmental monitoring and biosafety technology. It includes a U-shaped ventilation tube with a flat bottom, an air inlet at the top of the left longitudinal tube, and an air outlet at the top of the right longitudinal tube. A fan is installed at the air inlet to achieve high-flow-rate air introduction. The inner side of the flat section of the U-shaped ventilation tube is filled with sampling liquid, and a temperature control component is installed on the outer side of the flat section. This invention provides a device and method that can significantly increase the contact area through an evaporation-condensation cycle without reducing airflow, achieving high-throughput and high-efficiency microbial aerosol sampling. It solves the problems of low airflow, limited contact area between aerosol and sampling liquid, and insufficient sampling efficiency in existing aerosol sampling technologies.

The invention provides a biological aerosol concentration, cracking and sample introduction device and method, the biological aerosol concentration, cracking and sample introduction device comprises an aerosol concentration separator, an aerosol sample introduction transmission line and a thermal cracker, the thermal cracker is provided with a cracking tube, the middle of the cracking tube is provided with a cracking zone, and quartz wool is arranged in the cracking zone; the aerosol concentration separator is used for concentrating and enriching aerosol in air, the aerosol sampling transmission line is used for guiding the aerosol concentrated and enriched by the aerosol concentration separator into an inlet of a cracking tube of the thermal cracker, and the concentrated and enriched aerosol is intercepted by quartz wool in a cracking area; the thermal cracker can generate high temperature and conduct the high temperature to the cracking zone, and biological macromolecules in the concentrated and enriched aerosol in the cracking zone are cracked into small molecule fragments. According to the technical scheme, the aerosol mass spectrum monitoring equipment is low in cost, small in size, convenient to move, good in real-time performance and very suitable for on-site deployment.

The present application relates to aerosol measurement technical field, specifically to a kind of aerosol sampling measurement system and control method suitable for steam flow system, including primary and secondary sampling structure, gas filling structure, fully developed structure, discharge structure, control host computer and aerosol measurement host computer;Sampling end of primary sampling structure is arranged in target measurement environment, gas filling structure is arranged downstream of primary sampling structure, its outer side is provided with heating jacket and its outer wall is communicated with exhaust pipe and gas injection pipe, gas filling structure is communicated to the gas inlet of primary sampling structure and the gas outlet between gas injection pipe, and convection is formed;Fully developed structure is arranged downstream of gas filling structure, and sampling end of secondary sampling structure is arranged in fully developed structure;Discharge structure is arranged downstream of fully developed structure.The present application can effectively avoid steam condensation phenomenon in gas mixing process, and realize aerosol equal-speed sampling under high gas flow rate change range.

The application discloses an air bacterial electrostatic collection and real-time monitoring system and method integrated with a microfluidic portable sensor, and belongs to the technical field of environmental monitoring, and comprises an aerosol sampling module, a microfluidic processing module, an electrochemical sensing module and a portable constant potential instrument module. Bacteria aerosols in the ambient air are charged by corona discharge to realize efficient enrichment and collection; the enriched liquid sample is sent into the microfluidic processing module and flows through a sensing electrode modified with CuFeCoPBA@MoS2 nano composite material, polydopamine and concanavalin A. Target bacteria are combined with the concanavalin A on the surface of the electrode in a broad-spectrum specific manner, the interface electron transfer is hindered, the portable constant potential instrument collects the attenuation change of differential pulse voltammetry electrochemical signals, and rapid quantitative detection of the concentration of air bacteria is completed. The application integrates efficient air aerosol collection and portable biosensing, and can realize one-step on-site capture and detection of air pathogens.

This invention discloses a method and apparatus for detecting atmospheric aerosols based on quantum weak measurement, belonging to the field of atmospheric aerosol detection. The method includes the following steps: S1, preparing aerosol solutions of various concentrations and dissolving them to obtain uniformly dispersed aerosol sample solutions of various concentrations; S2, detecting the intensity difference between left-handed and right-handed circularly polarized light of the aerosol sample solutions of various concentrations; S3, calculating the optical rotation spectrum corresponding to the aerosol sample solutions of various concentrations based on the intensity difference between left-handed and right-handed circularly polarized light, combined with a quantum weak measurement theoretical model, to determine the type and concentration of aerosols through the characteristic differences in the optical rotation spectrum. By employing the above-mentioned method and apparatus for detecting atmospheric aerosols based on quantum weak measurement, and utilizing the signal amplification mechanism of quantum weak measurement, combined with the correlation between optical rotation spectrum and concentration, highly sensitive type identification and quantitative concentration detection of atmospheric VOC aerosols can be achieved.

A system and method to measure a size distribution of particles based on their electrical mobility. The method includes: introducing, via a sheath flow inlet, a particle free sheath flow into a chamber formed by two parallel walls which are separated by a gap, the chamber having a width and a length, the sheath flow having a direction along the length of the chamber and flowing a laminar manner; introducing an aerosol sample flow into the chamber downstream of the sheath inlet such that the aerosol sample flow joins the particle free sheath flow in a laminar manner; applying an electric field between the two parallel walls of the chamber, the field having a strength which varies across the width of the chamber; extracting an output aerosol flow through a first outlet downstream of the sample inlet; and outputting an excess flow equal to a sum of the sheath flow and aerosol sample flow minus the output aerosol flow. The method may also include: passing the output aerosol flow through a growth cell in a laminar manner, the growth cell having a region of wetted walls with two or more temperature regions such that the particles within the output aerosol flow grow by condensation to form droplets, and such that relative positions of droplets are indicative of particle electrical mobility; and counting and capturing a spatial position of individual droplets exiting the growth cell.

The invention discloses an atmospheric aerosol detection method and device based on quantum weak measurement, and belongs to the field of atmospheric aerosol detection.The atmospheric aerosol detection method comprises the following steps that S1, aerosol solutions of various concentrations are prepared and dissolved, and uniformly dispersed aerosol sample solutions of various concentrations are obtained; s2, respectively detecting light intensity differences of the left-handed circularly polarized light and the right-handed circularly polarized light of the aerosol sample solutions with various concentrations; s3, on the basis of the light intensity difference of the left-handed circularly polarized light and the right-handed circularly polarized light, optical rotation angle spectrums corresponding to the aerosol sample solution under various concentrations are calculated in combination with a quantum weak measurement theoretical model, so that the type and concentration of the aerosol are determined through the characteristic difference of the optical rotation angle spectrums. By the adoption of the atmospheric aerosol detection method and device based on quantum weak measurement, high-sensitivity type recognition and concentration quantitative detection of atmospheric VOC aerosol are achieved by means of a signal amplification mechanism of quantum weak measurement and in combination with the correlation between the optical rotation angle spectrum and the concentration.

The application provides an aerosol sampling device, a full-time sampling method and a multi-point sampling method. The device comprises a machine body and sampling channels arranged along the circumference of the machine body. Each sampling channel comprises a cyclone chamber, a sampling cup and a fan. A plurality of air exhaust branches are arranged in the machine body and separated from each other. The sampling cup is in communication with the corresponding cyclone chamber, and the fan is in communication with the corresponding cyclone chamber. The air inlet end of each air exhaust branch is in communication with the corresponding fan. The plurality of air exhaust branches correspond to the plurality of sampling channels one by one, so that the sampling airflow of each sampling channel is discharged through the corresponding air exhaust branch. The plurality of sampling cups correspond to the plurality of sampling channels one by one to store the samples collected by each sampling channel respectively. A control member is arranged on the machine body and electrically connected with each fan to control the independent start and stop of each sampling channel. The above structure improves the cleanliness of the samples.

The invention discloses a fluorescence aerosol standard generation device and a calibration method, and belongs to the technical field of laser fluorescence detection.The fluorescence aerosol standard generation device comprises a fluorescence aerosol generation part, a calibration part and a control part, and the fluorescence aerosol generation part can continuously and stably output aerosol according to the preset concentration, flow and particle size spectrum; and the fluorescent aerosol calibration part is connected with the aerosol output end of the fluorescent aerosol generation part so as to carry out accurate counting and attribute calibration on the generated aerosol. The particle size and concentration of aerosol can be accurately controlled, an advanced aerosol detection system is arranged, and the number of aerosol particles can be monitored and verified in real time, so that a stable and countable aerosol sample is provided, and the requirements of high-precision monitoring and research are met.

This application discloses an intelligent detection system for aerosol pathogens based on real-time air quality monitoring, relating to the fields of bioaerosols and air quality monitoring. The system includes: a mobile unit that patrols along a preset route; an air quality monitoring unit that collects air quality data from each sampling point; an aerosol collection unit that collects aerosol samples when air quality data exceeds a threshold; a nucleic acid detection unit that uses a detection kit to detect the aerosol samples; and an intelligent control unit that, when air quality data exceeds the corresponding threshold, activates the aerosol collection unit to continue patrolling along the preset route; activates the nucleic acid detection unit to perform pooled testing of samples; if the pooled test result exceeds the pathogen threshold, the system revisits each contaminated area to collect aerosol samples and activates the nucleic acid detection unit to perform individual sample testing; if the individual test result exceeds the pathogen threshold, the system uploads the data to the terminal for early warning. This application enhances the accuracy and timeliness of target pathogen detection.

This invention proposes a superhydrophilic coating for wet-wall cyclone sampling of bioaerosols and its preparation method. By superhydrophilically modifying the inner wall of the sampling cup made of glass or plastic, the cyclone layer is less prone to breakage during sampling. As the liquid level decreases during sampling, the previously exposed portion above the cyclone layer is covered by a thin liquid film due to the superhydrophilic properties. This allows aerosol particles to be effectively captured upon impact with the liquid film, preventing them from bouncing off the exposed glass or plastic surface and escaping with the airflow. This method effectively solves the wall loss problem in low-flow-rate sampling and long-term sampling, thereby achieving efficient aerosol-water-solvent transfer of bioaerosol particles. It can significantly improve the sampling efficiency of wet-wall cyclone bioaerosol samplers and has broad application prospects.

The invention relates to the technical field of nuclear facility environment evaluation, in particular to a method for detecting the nuclide release amount in the cutting process of a radioactive pipeline. The detection method comprises the following steps: measuring the surface nuclide activity level of the radioactive pipeline; constructing a sealed measurement space around the radioactive pipeline; arranging an aerosol sampling device, and communicating a sampling port of the aerosol sampling device with the sealed measurement space to form an air loop; carrying out cutting operation on the radioactive pipeline in the sealed measurement space, and starting the aerosol sampling device to carry out aerosol sampling at the same time; determining the nuclide activity level in the collected aerosol sample; and according to the measured activity level of the nuclide on the surface of the radioactive pipeline and the activity level of the nuclide in the aerosol sample, calculating the release amount of the nuclide. According to the method for detecting the nuclide release amount of the radioactive pipeline in the cutting process, the nuclide release amount of the abandoned radioactive pipeline in the cutting process can be accurately detected.

The utility model discloses a portable microbial aerosol sampling device, which belongs to the technical field of microbial aerosol sampling devices, and comprises a device main body box, an air inlet pipe is mounted at the top of the device main body box, and the top end of the air inlet pipe is detachably connected with an air inlet hopper; the bottom end of the air inlet pipe extends into the device main body box, a micro sampling pump and a flow meter are sequentially mounted on the air inlet pipe, a nozzle is mounted at the bottom end of the air inlet pipe, and a handle is mounted on one side of the device main body box; a one-way electromagnetic valve is mounted at the top of the sampling bottle. According to the utility model, the micro sampling pump, the flow meter and the one-way electromagnetic valve are arranged, air containing microbial aerosol is sucked in through the micro sampling pump and enters the sampling bottle through the nozzle, immediate and rapid sampling can be realized through the micro sampling pump, the flow can be accurately controlled through the flow meter, and accurate sampling can be realized through the one-way electromagnetic valve; the device is small in overall size and convenient to hold, carry and use.

The invention provides a spectral absorption analysis method of carbon aerosol, electronic equipment and a storage medium, and relates to the technical field of atmosphere detection. The method comprises the following steps: determining a target tracer agent in a plurality of emissions corresponding to a main emission source type of a carbon aerosol sample set; a carbon aerosol absorption coefficient corresponding to each carbon aerosol sample under a preset wavelength is measured and obtained through a thermo-optical method carbon analyzer, and according to the carbon aerosol absorption coefficient, an absorption wavelength index fluctuation range of black carbon, a preset adjustment step length and an absorption wavelength index constraint condition of brown carbon, a carbon aerosol sample is obtained; performing fitting to determine an initial absorption coefficient of brown carbon corresponding to each carbon aerosol sample under a preset wavelength; and according to the initial absorption coefficient and the concentration of the target tracer agent in each carbon aerosol sample, iteratively determining the target absorption wavelength index corresponding to brown carbon and black carbon in the preset wavelength range, so that the accuracy of carbon aerosol analysis can be improved, and the influence of dust on the carbon aerosol absorption coefficient is eliminated.