33 results about "Atomic fluorescence" patented technology

The invention discloses an atmospheric microparticulate monitoring device and method based on multi-mode sensing, and relates to the technical field of ecological environment monitoring. The device comprises a data acquisition system used for carrying out real-time sample acquisition and signal conversion on conventional pollution factors and meteorological parameters in air; the data analysis system is used for carrying out concentration analysis and early warning on the signals converted by the data acquisition system; the error evaluation system is used for performing error evaluation on the key indexes of the data acquisition system according to the acquired samples; and the data transmission system is used for carrying out cross-regional transmission on the sample acquired by the data acquisition system and the analysis result according to a sensitivity quantity algorithm based on an anonymous model. Real-time monitoring of atmospheric micro-particles with high accuracy and strong applicability is realized based on atmospheric monitoring standards independent of a meteorological monitoring framework, and reasonable adjustment of device parameters is realized by cooperation of the atomic fluorescence spectrometer and the enrichment sampling and pretreatment unit.

The utility model provides a heat digestion reduction system for liquid chromatography and atomic fluorescence is used together, including heat digestion device, cooling device, sucking pump, gas -liquid separator, digestion agent container and reducing agent container. Heat digestion device includes digestion pipeline and heating device, and heating device is used for heating digestion pipeline. Cooling device includes heat dissipation board and cooling pipeline, and heat dissipation board installs on cooling pipeline and is used for heat dissipation to cooling pipeline. The utility model discloses compared with prior art in ultraviolet lamp digestion, and the higher stability of digestion efficiency is not needed to consider the risk of ultraviolet lamp breakage, and heating temperature will also reduce the memory effect in pipeline, improve hydride generation efficiency. Through setting up cooling device to the mixed liquid of measuring in pipeline after completing heating digestion is cooled, make the aerosol that generates because of heating digestion quick liquefaction, effectively reduce the system pressure in pipeline, avoid the risk of pipeline burst.

This invention discloses a method for determining the arsenic content in ores, belonging to the field of ore element detection technology, comprising the following steps: (1) weighing the ore sample, adding hydrochloric acid-nitric acid mixed acid for acid hydrolysis, then adding hydrofluoric acid and perchloric acid for auxiliary digestion, evaporating to near dryness, and dissolving the residue with hydrochloric acid; (2) adding a thiourea-ascorbic acid-citric acid mixed reducing masking agent to reduce and mask interfering ions; (3) using an atomic fluorescence spectrometer to determine the fluorescence intensity of arsenic in the sample solution, and calculating the arsenic content according to the standard curve. This method achieves accurate and stable determination of arsenic in various ores such as phosphate rock and iron ore by optimizing sample pretreatment conditions, improving the reduction system and matrix interference suppression strategy.

The invention relates to a reflective two-photon rubidium clock atomic fluorescence collection system. The system comprises a rubidium atom gas chamber, a reflector, an optical filter, a lens and a photoelectric detector. The rubidium atom gas chamber is a reflection cavity with a parabolic cylinder structure, the side plane of the rubidium atom gas chamber is a polling light incident plane and is plated with a color separation film for transmitting polling light and reflecting atomic fluorescence, and the polling light incident point is located at the focal point of the parabolic section; the opposite plane of the parabolic cylinder of the reflection cavity is an atomic fluorescence emergent surface, the inner wall of the parabolic cylinder is plated with an atomic fluorescence reflecting film, rubidium atom steam is contained in the parabolic cylinder, and a preset included angle is formed between the reflector and the atomic fluorescence emergent surface and used for reflecting a light path to enable a fluorescence collection light path and a polling light path to be arranged in parallel and converging emergent atomic fluorescence. The optical filter filters stray light with non-target wavelength, the lens converges atomic fluorescence after light filtering, the photoelectric detector receives the fluorescence and converts the fluorescence into an electric signal, and frequency stabilization control of the laser is achieved. By adopting the system, the space utilization rate, the system signal-to-noise ratio and the fluorescence collection efficiency can be improved.

This utility model belongs to the field of optical measurement technology and discloses an atomic fluorescence spectrometer, including: a frame, a worktable, and a positioning component. The frame supports the atomic fluorescence spectrometer, and the worktable is connected to the frame for placing the sample to be tested. The positioning component includes a telescopic component, a movable component, a guide component, a squeezing component, and a rubber component. The telescopic component is disposed on the worktable, and its movable end is drivenly connected to the movable component. The movable component is movably disposed on the worktable. The guide component is connected to the movable component and slidably disposed on the worktable. The squeezing component is connected to the movable component, which can achieve squeezing and fixing of the sample to be tested, thereby effectively limiting the position of the sample and avoiding positional displacement caused by external factors during the detection process, thus ensuring the accuracy of the atomic fluorescence spectrometer detection results.

The application discloses a method for determining tin and inorganic compounds thereof in workplace air. The method comprises the following steps: firstly, using a microporous filter membrane to sample the workplace air; then, using a disposable PP polypropylene digestion tube, a digestion solution and a graphite digestion instrument to digest the microporous filter membrane after sampling; taking down the cooled microporous filter membrane and quantitatively placing it into a test tube by using a hydrochloric acid solution; adjusting the Ph value by using a sodium hydroxide solution and setting the volume to 25.0 mL; preparing a tin standard solution series and drawing a fluorescence intensity-tin content curve by using an atomic fluorescence spectrometer; analyzing the sample by using the atomic fluorescence spectrometer; the sample fluorescence intensity is proportional to the tin content; and obtaining the corresponding tin content from the fluorescence intensity of the sample according to the drawn fluorescence intensity-tin content curve. The method realizes the analysis and determination of trace, ultratrace tin and inorganic compounds thereof, reduces the instability of blank filter membranes caused by external interference, avoids the phenomenon that the blank filter membrane concentration is opposite to the sample concentration, and improves the determination precision.

Embodiments of the present application disclose a single-atom manipulation system, a control method and an electronic device. The single-atom manipulation system comprises: an atomic cooling device configured to form an MOT atomic group, wherein the MOT atomic group is capable of generating atomic fluorescence of a first target wavelength; an atomic trapping device, wherein the atomic trapping device comprises a laser source and a strong focusing lens, the laser source emits a target laser beam of a second target wavelength, the target laser beam passes through the strong focusing lens to form an optical tweezer array to trap the MOT atomic group; and an imaging device, wherein the imaging device is sequentially provided with a filter, a noise fluorescence shielding device, a plano-convex lens and an imaging unit in a reflection direction of the focused atomic fluorescence, and the noise fluorescence shielding device is configured to shield noise fluorescence generated by the atomic cooling device.

The invention discloses an efficient and safe microwave digestion-atomic fluorescence detection method for total selenium in soil, and belongs to the technical field of analytical chemistry and environmental detection.According to the method, the content of total selenium in selenium-rich soil is rapidly, accurately and safely measured by optimizing the sample weighing amount, the microwave digestion procedure and the detection conditions, and the detection accuracy is improved. The method comprises the following specific steps: weighing 0.1 g of an air-dried and sieved selenium-rich soil sample, adding 5mL of concentrated nitric acid, then carrying out a microwave digestion process of heating to 175 DEG C for 12 minutes and maintaining for 48 minutes, after digestion, adding 5mL of 6mol / L hydrochloric acid, carrying out acid removal reduction at 140 DEG C, fixing the volume to 15mL by using 5% diluted hydrochloric acid, and finally determining by using an atomic fluorescence spectrophotometer by using 5% hydrochloric acid as a carrier current and 1% potassium borohydride and 0.5% potassium hydroxide as reducing agents. According to the method, the use of dangerous reagents such as hydrofluoric acid and perchloric acid is avoided, the detection period is remarkably shortened, the linear range is 0-10 mu g / L, and the correlation coefficient is Rgt; the average recovery rate is up to 101.13%-101.51%, and the precision is RSDlt (Research Standard Defect); the requirements of rapid detection of the total selenium content of the selenium-rich soil, agricultural production and environmental evaluation are met.

The utility model provides a liquid chromatography-atomic fluorescence flow path analysis system, which relates to the technical field of chemical analysis, and comprises a mobile phase processing device, a sample online reaction device, a gas path device and a gas-liquid separation device, the sample online reaction device is used for carrying out separation, online ultraviolet digestion and hydride generation on a sample; according to the device, the mobile phase does not need to be degassed manually, an experimenter only needs to prepare the mobile phase and place a pipeline in a corresponding reagent bottle, and an instrument can perform online degassing on the mobile phase, so that the time required for preparing the mobile phase is saved, hydrogen is supplemented when a sample reacts with a reducing agent to generate gaseous hydride, the dosage of potassium borohydride is effectively reduced, and the production cost is reduced. While the physical health of experimenters is ensured and a friendly laboratory environment is provided, the influence of water vapor on a test result can be reduced, and the sensitivity and the stability of an instrument are improved.

The invention discloses an atomic fluorescence detection device and method, and the device comprises an atomic gas chamber which is used for spontaneously radiating atomic fluorescence rays; the reflecting device is used for reflecting the fluorescent rays, so that the fluorescent rays reflected by the reflecting device are converged to the spherical lens; the spherical lens is used for receiving the reflected fluorescent rays and increasing the convergence degree of the fluorescent rays reflected by the reflecting device; and the fluorescence detector is used for receiving and detecting the fluorescence rays. The atomic gas chamber has the advantages that the principle is clear, the structure is simple, and by adjusting the distance between the rectangular reflecting mirror in the reflecting device and the point light source at the central position of the atomic gas chamber and the distance between the first prismatic right-angle reflecting mirror and the point light source and the distance between the second prismatic right-angle reflecting mirror and the point light source in the vertical direction, the atomic gas chamber can be reflected; reflected fluorescent rays are converged to the spherical lens to the maximum extent, and the fluorescent ray detection efficiency is improved.

This invention discloses an atomic fluorescence spectrometer and an automated sample measurement system, belonging to the field of atomic fluorescence spectrometer technology. This invention effectively ensures stable instrument operation and efficient atomization reactions through a comprehensive self-checking mechanism combined with adaptive matching of different analyte types and detection modes. Simultaneously, through precise cup positioning, automatic sample sequence configuration, and orderly scheduling of the detection process, coupled with reference light baseline correction, multi-level blank measurement, and standard curve fitting to establish quantitative correlations, it fully covers the entire detection chain from automatic sample introduction, signal acquisition, signal optimization processing to concentration calculation and correction, effectively improving the accuracy and repeatability of sample measurement results. It achieves fully automated operation of the entire process—including power-on self-check, parameter matching, automatic measurement, data calibration, result calculation, and standardized report generation—without extensive manual intervention, adapting to the needs of multi-element, multi-wavelength simultaneous detection and improving the intelligence, standardization, and automation level of atomic fluorescence detection.

The utility model discloses an automatic liquid discharge structure of an atomic fluorescence spectrophotometer, which comprises a filter bin, a liquid discharge component arranged at the top of the filter bin, a flow guide component arranged on one side of the filter bin, a prompt component arranged on one side of the top of the filter bin far away from the liquid discharge component, and a backwashing component arranged at the top of the flow guide component. The liquid drainage assembly comprises a water pump A, a flow guide pipe, a conveying pipe, a filter screen and a purification box, the water pump A is located on one side of the top of the filter bin, and the flow guide pipe is arranged at the input end of the water pump A; through the mutual cooperation of the sleeve, the guide groove, the guide rod, the piston, the spring, the electric contact block A, the electric contact block B and the prompting lamp, when the filter screen in the device is blocked, the piston can be pushed to move upwards by utilizing the continuously rising pressure of blocked water flow, the prompting lamp is automatically turned on to remind a worker, the worker can conveniently observe the blocking condition of the filter screen in time, and the working efficiency is improved. And treatment measures are taken in time.

The application provides a monovalent mercury detection method, and relates to the field of analytical detection technology. The monovalent mercury in a to-be-detected sample is extracted by 2-mercaptoethanol aqueous solution, and the obtained to-be-detected sample liquid is subjected to high performance liquid chromatography-atomic fluorescence spectrometry detection. In the high performance liquid chromatography separation process, the monovalent mercury is completely disproportionated into zero-valent mercury and divalent mercury, and is separated by high performance liquid chromatography, and is subjected to atomic fluorescence spectrometry detection respectively. The mercury of all valence states is reduced by a reducing agent and forms mercury vapor, and then generates a fluorescence signal, and sequentially peaks with a retention time, so that the zero-valent mercury detection peak area and the divalent mercury detection peak area are obtained. According to the zero-valent mercury detection peak area and the divalent mercury detection peak area, the detection concentration of divalent mercury and the detection concentration of zero-valent mercury are obtained by using an external standard method. The concentration of monovalent mercury in the to-be-detected sample liquid is calculated, the accuracy and the sensitivity of detection are high, and efficient analysis and detection of monovalent mercury are realized.

The invention belongs to the technical field of analysis and detection, and particularly relates to a hollow cathode lamp energy dynamic compensation light path for an atomic fluorescence spectrometer and a light intensity compensation method. The hollow cathode lamp energy dynamic compensation light path comprises a hollow cathode lamp, a lamp coding plate, a spectroscope, a band-pass optical filter and a photodiode, the lamp coding plate is in signal connection with the hollow cathode lamp, light emitted by the hollow cathode lamp passes through the spectroscope, and part of the light is reflected by the spectroscope to enter the band-pass optical filter and then enters the photodiode; the other part of the light enters the atomizer through the spectroscope and is detected by the photomultiplier; wherein the lamp coding board and the photodiode are in signal connection with the main control board. According to the hollow cathode lamp energy dynamic compensation light path for the atomic fluorescence spectrometer and the light intensity compensation method, one-time calibration and one-time measurement are not needed, the calibration frequency is reduced, the reagent dosage and carrier gas are saved, the operation and maintenance cost is reduced, the measurement accuracy and stability of equipment are improved, and the service life of the hollow cathode lamp is prolonged.

The invention discloses a soil, water-based sediment and protocorona sample pretreatment and detection method, and belongs to the technical field of geological and environmental sample analys.According to the method, a one-time digestion and branch detection mode is adopted, synchronous extraction of multiple elements in a sample is achieved by optimizing digestion reagent combination, targeted subsequent treatment steps are combined, and the detection efficiency is improved. The method is respectively adapted to an atomic fluorescence spectrophotometer, an atomic absorption spectrometer, a plasma spectrometer (ICP) and a membrane desolvation-inductively coupled plasma mass spectrometer (ICP-MS), and can efficiently measure more than 10 elements such as As, Sb, Bi, Hg, Ag, Cu, Pb, Zn, Co, Ni, Cd and the like. Compared with a traditional method, the method has the advantages of uniform pretreatment flow, scientific reagent selection, high detection compatibility, remarkable improvement of efficiency and precision and the like, is stable in target peak shape, high in standard recovery rate, excellent in precision and accuracy and suitable for sample analysis in large-scale geological survey, environmental monitoring and mineral resource evaluation, and the detection limit reaches the microgram / kg level.

The utility model discloses an atomic fluorescence spectrophotometer capable of automatically sampling and detecting, and relates to the technical field of atomic fluorescence spectrophotometers. A photometer main body is arranged on one side of the mounting rack; a sampling needle is arranged on the side part of the photometer main body; a sliding block is in sliding fit with the mounting rack; a driving mechanism for driving the sliding block to slide is arranged on the mounting rack; a synchronous belt is arranged between the first synchronous wheel and the second synchronous wheel, and a first servo motor used for driving the second synchronous wheel to rotate is arranged on the bottom face of the mounting frame. The test tube is placed in the synchronous belt, the first servo motor drives the second synchronous wheel to drive the synchronous belt and the second synchronous wheel to rotate, then the test tube is driven to move step by step, the electric push rod is started, the output shaft of the electric push rod pushes the upper portion of the test tube out of the synchronous belt, the sampling needle is inserted into the test tube, and automatic sampling is completed.

The application discloses a fluorescence imaging device, a state detection system, an ion trap and a quantum computer. The fluorescence imaging device comprises a first imaging unit composed of a first objective lens and a parabolic mirror. The first objective lens converts the divergence angle of received atomic fluorescence. The parabolic mirror reflects and focuses the atomic fluorescence with the converted divergence angle to obtain imaging for state detection. The parabolic mirror reflects and focuses the atomic fluorescence, avoiding the problems of spherical aberration and chromatic aberration caused by the refraction of the atomic fluorescence in the lens group when the lens group is used to focus the atomic fluorescence. The parabolic mirror replaces the complex lens group, and the optical path composition of the fluorescence imaging device is simplified.

The utility model relates to the technical field of atomic fluorescence spectrometers, and particularly discloses an atomic fluorescence spectrophotometer drainage device which comprises a spectrophotometer body, a drainage pipe communicated with one side of the spectrophotometer body, and a drainage mechanism arranged at the tail end of the drainage pipe and used for collecting and storing drainage liquid, the liquid discharging mechanism comprises a supporting assembly arranged on one side of the photometer body, and a cleaning assembly used for treating discharged liquid is arranged in the supporting assembly. Through the arrangement of a supporting assembly and a cleaning assembly of the liquid discharging mechanism, after filtered discharged liquid enters a liquid storage barrel, the discharged liquid overcomes the supporting force of a spring to move downwards along with the increase of the overall weight of the liquid storage barrel, vertical movement is converted into rotation of a rotating barrel and a cleaning scraping piece through a power assembly, and the cleaning scraping piece stirs sediment at the bottom of the liquid storage barrel; after the flow guide holes in the upper side of the flow guide pipe are staggered and separated from the rotating cylinder, stored liquid in the liquid storage cylinder enters the flow guide pipe and flows out of the liquid outlet pipe, and the comprehensiveness of cleaning the bottom of the liquid storage cylinder is improved.

The utility model relates to the technical field of mercury measuring instruments, and provides a cold atom fluorescence mercury measuring instrument sealing structure which comprises a mercury measuring instrument body, a detection sealing buckle cover is arranged on the mercury measuring instrument body, a plug-in mounting sealing assembly is arranged on the mercury measuring instrument body, and a locking sliding assembly is arranged on the upper end face of the mercury measuring instrument body. The plug-in mounting sealing assembly comprises an operation opening, the operation opening is formed in the side wall of the mercury analyzer body, the detection sealing buckle cover is inserted in the operation opening, a horizontal plate is arranged at the upper end of the detection sealing buckle cover, a locking shaft is arranged on the bottom face of the horizontal plate, a locking disc is arranged at the bottom of the locking shaft, a locking block is arranged on the upper end face of the mercury analyzer body, and a locking opening is formed in the locking block. And the locking shaft is embedded into the locking opening. According to the technical scheme, the problems that in the prior art, voltage, a circuit and related parameters need to be adjusted when the mercury analyzer is used, the mercury analyzer needs to be opened for operation, the sealing performance at an operation opening of the mercury analyzer is poor, leakage is likely to happen, and dust enters the mercury analyzer are solved.

The invention relates to a two-photon rubidium clock fluorescence collection system based on a parabolic reflection cavity. The system comprises a rubidium atom gas chamber, a light collecting lens group, an optical filter and a photoelectric detector. The rubidium atom gas chamber is a parabolic reflection cavity with a truncated top end plane, and the truncated top end plane is a rubidium atom polling light entrance port and is plated with a color separation film for transmitting polling light and reflecting atomic fluorescence; the bottom end is an atomic fluorescence exit port and is plated with a color separation film for reflecting polling light and transmitting atomic fluorescence; the inner wall is plated with an atomic fluorescence reflecting film, rubidium atom steam is arranged in the cavity, and the cavity focus is located in a preset action area of the polling light and the rubidium atom steam. A first lens of the light collecting lens group converges atomic fluorescence, an object space focus of a second lens coincides with an image space focus of the first lens, and the converged fluorescence is collimated. The optical filter is used for filtering stray light with non-target wavelength and only allowing atomic fluorescence to penetrate; and the photoelectric detector converts the filtered fluorescence into an electric signal. The system can improve the optical energy utilization rate and the fluorescence collection efficiency.

The utility model discloses an atomic fluorescence spectrophotometer sample holder which comprises a box body, a plurality of first mounting plates are arranged on the box body at intervals along the front-back direction, and a plurality of first elastic sheets are arranged on each first mounting plate at intervals along the length direction of the first mounting plate; a plurality of second mounting plates are movably arranged on the box body in the left-right direction, the second mounting plates and the first mounting plates are arranged in parallel in a one-to-one correspondence mode, a plurality of second elastic pieces are arranged on the second mounting plates at intervals in the length direction of the second mounting plates, and each second elastic piece and the corresponding first elastic piece form a clamping cavity for containing a sample tube; the multiple second mounting plates are connected through connecting rods, a limiting mechanism is arranged between one second mounting plate and the box body, and the limiting mechanism is used for locking the position of the second mounting plate after movement. According to the atomic fluorescence spectrophotometer sample holder with the structure, test tubes of different models can be fixed, and the application range of the sample holder can be widened.

The invention discloses a method for prolonging the service life of a three-position valve on an atomic luminoscope at a relatively low temperature, relates to the technical field of analytical instruments, and aims to solve the problem of liquid leakage caused by a gap generated by the difference of thermal expansion coefficients of a valve core and a valve body of the three-position valve in a low-temperature environment by adopting a thermal compensation sealing technology. The valve element is expanded through heating to compensate the gap, and the sealing performance is recovered. The method specifically comprises two modes of directly heating the valve element or indirectly heating the current-carrying liquid and the reducing agent flowing through the valve element. Constant-temperature hot air is adopted for direct heating, and hydrochloric acid current-carrying liquid and a potassium borohydride reducing agent containing potassium hydroxide are preheated and then introduced into the valve body through indirect heating. The leakage three-position valve can stop leakage immediately, the recovery degree of the liquid suction amount of the injector is high, the stability of the correlation coefficient of the standard curve is improved, the service life is prolonged, the cost of spare parts is saved, the analysis efficiency and economic benefits are remarkably improved, existing instruments do not need to be transformed, and operation is easy, convenient and safe.

The invention relates to a method for detecting six forms of arsenic in a Chinese patent medicine and application thereof, and belongs to the technical field of traditional Chinese medicine detection. According to the detection method, liquid chromatography-atomic fluorescence combination is utilized, specific chromatographic conditions and spectrum conditions are selected, separation of AsB and AsC is achieved, simultaneous detection of six forms of arsenic (As III, DMA, MMA, AsV, AsB and AsC) in the Chinese patent medicine is achieved, and the technical problem that AsB and AsC are difficult to detect due to the fact that AsB and AsC cannot react with potassium borohydride is successfully solved. Meanwhile, the detection method has remarkable advantages in sensitivity and accuracy, and a more economical and feasible solution is provided for detection of the arsenic form in the traditional Chinese medicine.

The utility model discloses an atomic fluorescence spectrophotometer, and relates to the technical field of detection equipment, the atomic fluorescence spectrophotometer comprises a sample disc, the sample disc comprises an upper tray, a lower tray, a chassis and a rotating shaft, the rotating shaft is rotatably arranged on a connector, the chassis is fixedly arranged on the connector, the rotating shaft passes through the chassis, and the upper tray is fixedly arranged on the rotating shaft. And the upper tray and the lower tray are fixedly arranged on the rotating shaft. The test tubes penetrate through the first holes of the upper tray and the second holes of the lower tray, and the bottom ends of the test tubes abut against the convex blocks or the grooves in the top of the base plate, so that the test tubes are placed on the sample plate, height difference is generated, the test tubes are convenient to take, and influence on detection results due to batch disorder is avoided.

The invention relates to a gas-liquid separation device for atomic fluorescence analysis and an atomic fluorescence heavy metal analyzer, the gas-liquid separation device comprises a tubular shell, the tubular shell is provided with a gas outlet and a liquid outlet, and the tubular shell is sequentially divided into a first cavity section, a second cavity section, a third cavity section and a fourth cavity section from bottom to top in the axial direction of the tubular shell; the second cavity section is communicated with the first cavity section through a first communicating pipe, an air inlet of the tubular shell is located in the second cavity section, the second cavity section is communicated with the third cavity section through a second communicating pipe, and a condensation cap is arranged at the air outlet end of the second communicating pipe to form a condensation channel communicated with the third cavity section. A liquid outlet of the third cavity section is communicated with the first cavity section through a first liquid discharge pipe; the third cavity section is communicated with the fourth cavity section through a third communicating pipe, the fourth cavity section is provided with a bent condensation channel, and a liquid outlet of the fourth cavity section is communicated with the first cavity section through a second liquid outlet pipe. The gas-liquid separation degree can be effectively improved, and the analysis precision can be improved.

This invention relates to the field of liquid phase chemistry, specifically to a method for determining mercury and arsenic in coal briquettes based on hydrothermal synthesis reactor digestion and atomic fluorescence spectrometry. The method involves adding a certain amount of coal briquettes and an appropriate amount of mixed acid to a pre-treated polytetrafluoroethylene (PTFE) sealed container (pre-treated by soaking, washing, and preheating) for pre-digestion until gas release occurs. After the reaction slows down, the container is covered, placed in a stainless steel sleeve, sealed, and placed in an electrically heated drying oven for sealed heating digestion. Then, acid removal and volume adjustment are performed to obtain the test solution. A series of standard solutions for mercury and arsenic are prepared, and a standard curve is plotted. The obtained digested solution is then tested using an atomic fluorescence spectrometer to obtain the fluorescence intensity. The content of the corresponding elements in the coal briquettes is calculated using the standard curve. This invention can accurately measure the content of volatile trace elements, such as mercury and arsenic, in coal briquettes.

The present application relates to the technical field of terahertz imaging, and specifically discloses an atomic fluorescence coded terahertz single-pixel imaging device, which comprises a laser space modulation module, an atomic fluorescence coding module and an acquisition and processing module; the laser space modulation module comprises a coupling light laser, a Rydberg light laser, a laser shaping module and a probe light coding module; the probe light coding module comprises a probe light laser, a digital microscopic array and a first plano-convex lens; the atomic fluorescence coding module comprises an atomic gas chamber and a terahertz source; the atomic fluorescence coded terahertz single-pixel imaging device can realize level transition de-excitation radiation fluorescence, and can simultaneously code and convert terahertz into visible light, and then acquire and process the image to realize an encoding speed of MHz, improve the speed of single-pixel imaging, and have a wide application prospect.

This invention relates to the field of terahertz imaging technology, specifically disclosing an atomic terahertz holographic imaging device, comprising a terahertz source, a terahertz phase modulation module, an atomic fluorescence imaging module, and an image acquisition and processing module. The terahertz phase modulation module is used to modulate the terahertz signal after irradiating a sample object. The atomic fluorescence imaging module is used to receive the processed sample terahertz signal and generate a visible light image. The image acquisition and processing module is used to acquire the visible light image and use an algorithm to reconstruct and obtain a terahertz holographic image with the original phase information. The terahertz phase modulation module includes a sample holder, a terahertz mirror, a pupil, a first terahertz lens, and a second terahertz lens. This atomic terahertz holographic imaging device can be applied in practice, achieving high-resolution imaging, acquiring phase information to achieve holographic imaging, and also enabling rapid imaging to realize terahertz holographic imaging.

This invention discloses a method for determining the arsenic and antimony content in hydrometallurgical zinc leaching solutions. Step one involves collecting a certain amount of zinc leaching solution in a container, heating the solution in a water bath, and filtering to obtain a filtrate. Step two involves taking a portion of the filtrate and adding saturated tartaric acid, concentrated hydrochloric acid, and thiourea-ascorbic acid in sequence, followed by heating to obtain the test solution. Step three involves introducing the test solution into an atomic fluorescence spectrometer for measurement, and calculating the arsenic and antimony content in the hydrometallurgical zinc leaching solution using the standard curve method. The beneficial effects of this invention are: shortening the analysis process, improving measurement accuracy, providing a detection guarantee for the precise control of arsenic and antimony content in leaching solutions in the hydrometallurgical zinc smelting industry, avoiding the use of toxic organic reagents during the detection process, improving environmental protection, reducing the risk of poisoning for operators, and enabling the simultaneous determination of both arsenic and antimony, saving half of the labor costs.