8 results about "Mercury vapors" patented technology

The present invention relates to a method for combined radiation correction of a mercury lamp and a tungsten lamp, belonging to the technical field of correction methods. It solves the problem of the limitation of the spectral range of tungsten lamp radiation correction in the prior art. In the method of the present invention, first in a dark environment and under the conditions that the temperature, voltage, and mercury vapor pressure remain unchanged, the optical system is irradiated with a mercury lamp and a tungsten lamp respectively to obtain the characteristic radiation spectrum of the mercury lamp and the calibration radiation spectrum of the tungsten lamp. The same wavelength in the two is taken as the overlapping wavelength, and the ratio of the radiation value of the overlapping spectral line of the tungsten lamp to the radiation value of the overlapping spectral line of the mercury lamp is calculated. This ratio is used as the scaling coefficient of the radiation value of the mercury lamp. Other spectra in the characteristic radiation spectrum of the mercury lamp are scaled according to this scaling coefficient according to their fixed relative proportion relationship to obtain the calibration radiation spectrum of the mercury lamp. The radiation correction of the optical system is carried out by using the calibration radiation spectrum of the mercury lamp and the calibration radiation spectrum of the tungsten lamp to obtain the correction result. This method can expand the spectral range of radiation correction and has higher accuracy at the same time.

The present application relates to mercury pollution treatment technical field, especially laboratory mercury pollution automatic processing method, the method includes the following steps: step S1: the mercury waste gas is from the air inlet pipe into the pretreatment pool, so that the mercury waste gas is contacted with the absorption liquid to absorb the mercury waste gas; Step S2: when the absorption liquid changes color, the first color sensor sends a signal to the control host, the control host controls the multiple electric telescopic rod to drive the shielding block to move, so that the air outlet pipe is opened, the control host controls the first valve to open, so that the absorption liquid is contacted with the filter material through the liquid outlet pipe into the filter tank to reduce mercury ions to metallic mercury; The present application can accurately and efficiently treat mercury vapor, mercury waste liquid and find mercury leakage in time, so as to guarantee the personal safety of the experimenter.

The invention discloses a three-resonance enhanced four-wave mixing VUV light source, which comprises a light splitting module, an optical parametric oscillation module and a mixing module, and is characterized in that the light splitting module utilizes a half-wave plate and a Glan prism to flexibly adjust to enter the Glan prism so as to divide incident light into two beams, and the two beams are respectively transmitted to the next Glan prism and the optical parametric oscillation module; the first half-wave plate is used for changing the polarization state of the incident light so as to adjust the light splitting ratio of the two beams of light; the optical parametric oscillation module comprises a first oscillation unit, a second oscillation unit and a third oscillation unit, and is used for performing a nonlinear process on the multiple beams of incident light split by the light splitting module so as to output multiple pieces of frequency mixing light with specific frequencies; and the frequency mixing module comprises a frequency mixing pool, the frequency mixing pool is filled with mercury vapor, the first frequency mixing light, the second frequency mixing light and the third frequency mixing light enter the frequency mixing pool through beam combination for four-wave mixing so as to obtain vacuum ultraviolet light, the adjustability is high, and the frequency mixing light energy output by each oscillation unit can be flexibly regulated and controlled.

The utility model discloses a high-pressure mercury lamp monitoring device with a lamp explosion prevention function, and relates to the technical field of illumination, the high-pressure mercury lamp monitoring device comprises a base and a protective cover, the lower end of the base is fixedly connected with a lamp holder, the lamp holder is provided with a high-pressure mercury lamp body, the lower end of the base is fixedly connected with a supporting rod located on the front side of the high-pressure mercury lamp body, and the supporting rod is fixedly connected with the protective cover. The other end of the supporting rod is fixedly connected with a temperature sensing switch, the lower end of the base is fixedly connected with fixing seats located on the left side and the right side of the high-pressure mercury lamp body, a fixing frame is inserted into the fixing seats, an activated carbon net is fixedly connected into the fixing frame, and a mercury vapor monitor is arranged at the lower end of the base and located on the rear side of the high-pressure mercury lamp body. The temperature sensing switch is arranged to monitor the temperature of the high-pressure mercury lamp body, when the temperature of the high-pressure mercury lamp body exceeds a threshold value, the temperature sensing switch will cut off power supply of the high-pressure mercury lamp body, and the possibility of lamp explosion is reduced.

The application discloses an ultraviolet lamp tube timer, which comprises a shell, the bottom of the shell is provided with a double-ring connecting block, the two sides of the double-ring connecting block are both provided with an annular groove, a rectangular hole is arranged between the inner walls of the two annular grooves, a cylindrical hole is arranged on the inner wall top of the rectangular hole, and the mercury vapor sensor, the controller, the micro fan, the air inlet pipe, the air outlet pipe, the double-ring connecting block, the annular groove, the air inlet hole, the rectangular hole, the cylindrical hole and the concave block are matched to suck the mercury vapor overflowing from the connection between the two ends of the tube body of the ultraviolet lamp tube body and the two electrodes, transport the mercury vapor to the concave block to react with sulfur powder, so that the mercury vapor can be effectively prevented from being scattered in the environment and inhaled by people to affect their health, the overflowing mercury vapor can be collected and removed in time, and the use safety of the ultraviolet lamp is effectively improved.

Apparatus and methods are provided for quantitative detection of mercury vapor in gas samples using a film of nanoparticles. The localized surface plasmon resonance (LSPR) of an amalgam nanoparticle is sensitive to adsorbed mercury mass. The equilibrium mass of mercury on a gold nanoparticle is a function of the surrounding vapor concentration and the temperature of the gold. A device that introduces a temperature-controlled gold nanoparticle film to a controlled flow of sample gas responds predictably to a given mercury vapor concentration when optically probed in situ. Controlling the temperature of the film allows for control of adsorption and desorption rates. Equilibrium plasmonic mercury detection, described herein, removes the cycling necessary for many gold-based mercury analyses. Methods are given for the operation and analysis of the temperature-stabilized gold nanoparticle mercury sensor. The disclosed mercury-detection apparatus and methods find use in a variety of applications, including, for example, mercury detecting applications.

The invention discloses a portable mercury content detection device, and relates to the field of mercury content detection. The portable mercury content detection device comprises a detector and a pretreatment unit arranged on one side of the detector, the detector detects the mercury content by measuring the light intensity weakening degree through a cold atomic absorption spectrometry, the pretreatment unit comprises a drying assembly and a flow rate adjusting assembly, and the drying assembly can adjust the content of a drying agent according to the humidity of mercury gas; the flow rate adjusting assembly adjusts the mercury steam flow rate according to the drying agent content. According to the portable mercury content detection device, by arranging the drying assembly, the number of drying agents can be adjusted according to the humidity of mercury steam, so that water vapor in the mercury steam can be effectively removed, and the influence of humidity on a detection result is avoided. Meanwhile, the flow speed adjusting assembly can correspondingly adjust the flow speed of mercury steam according to the number of the drying agents, dilution of the mercury steam is reduced, it is guaranteed that the sensitivity of the detector to the mercury steam is stable, and the detection accuracy is further improved.

The utility model relates to a false-true combined Frank-Hertz comprehensive experiment instrument. Comprising an STM32F103VET6 single chip microcomputer main control board, a W25Q64-FLASH chip, a filament voltage display nixie tube, a filament voltage key module, a VG1K display nixie tube, a VG1K key module, a VG2K display nixie tube, a VG2K key module, a board-level current display nixie tube, a gas type display screen, a voltage regulation encoder, a gas type selection encoder and the like. The device can be used for simulating the change relation between the second grid voltage and the plate-level current when the Frank-Hertz tube is filled with different gases, can display an experimental curve on an oscilloscope integrated with an instrument, and can also be connected to a computer to display an experimental curve image through upper computer software. The Frank-Hertz experiment of various gases, including conventional argon and mercury vapor as well as unconventional sodium vapor and nitrogen, is completed by using a single experiment device. And a program can be modified subsequently to add experimental data of more gases. The experiment steps are simple and easy to operate.