31 results about "Silver iodide" patented technology

The invention discloses a negative ion antibacterial far infrared non-woven fabric and a production process thereof, and the negative ion antibacterial far infrared non-woven fabric comprises the following raw materials in parts by weight: 100 parts of polypropylene, 10-15 parts of modified polypropylene master batch, 3-5 parts of far infrared radiation filler and 0.1-0.5 part of antioxidant, the polypropylene non-woven fabric is modified by adding the modified polypropylene master batch and the far infrared radiation filler, the modified polypropylene master batch contains the modified nano composite powder and the pyridine group, the modified nano composite powder is obtained by compounding germanium oxide and tourmaline and then carrying out surface modification, and terminal double bonds and erucyl amide groups are introduced, so that the far infrared radiation non-woven fabric is obtained. And the far infrared radiation filler is doped powder of zirconium oxide doped with silver iodide, so that the non-woven fabric has good antibacterial and anti-pollution capability, negative ion release capability and far infrared ray absorption and radiation capability.

This invention discloses a quantitative method and apparatus for assessing the catalytic potential of silver iodide in artificial rain and snow enhancement based on cloud physics parameters, belonging to the field of atmospheric science and technology. The method includes: calculating and normalizing the total nucleation ratio of silver iodide particles to obtain a normalized nucleation conversion rate score; calculating the ice crystal potential ratio and supersaturation relaxation timescale that can effectively participate in the bergiron process after catalysis; calculating and normalizing the effective conversion time based on the ice crystal potential ratio and supersaturation relaxation timescale to obtain a normalized conversion rate score; calculating and normalizing the effective liquid water pathway to obtain a normalized liquid water content score; and weighted summing the normalized nucleation conversion rate score, normalized conversion rate score, and normalized liquid water content score to obtain a comprehensive catalytic potential score characterizing the quantitative results of the catalytic potential. This invention enables the quantitative assessment of the catalytic potential of cold clouds.

The invention discloses a waste treatment method in a radiopharmaceutical production process, which comprises the following steps: adding a DNA-silver nano composite material into wastewater, so that silver ions are combined with iodine-131 to generate stable silver iodide crystals, thereby fixing radionuclides in the wastewater; the risk of iodine-131 volatilization is reduced by adopting a vacuum evaporation process, and water is ensured to be separated from radioactive pollutants; condensate water is discharged after reaching the standard through detection, and concentrated waste is subjected to curing treatment; by mixing concentrated waste with cement and adding a silicate additive, the physical stability and chemical inertness of a solidified body are enhanced, and the possibility of leakage is reduced; and finally, safely storing the cured concentrated waste in a special storage container. According to the method, efficient and safe radioactive waste management is achieved through the synergistic effect of a series of steps, the safety of long-term storage is greatly improved, and the method has great significance in protecting human health and protecting the ecological environment from radioactive contamination.

The application relates to the field of artificial rainfall, and relates to a method for artificial rainfall by using silver iodide nanoparticles and a scattering device. The main purpose is to overcome the problems of low nucleation efficiency caused by the dependence of traditional artificial rainfall technology on explosives, low utilization rate of silver iodide and uncontrollable particle size. The main scheme comprises the following steps: generating a pulsed laser beam by a laser generator; adjusting the energy density of the laser beam to 1-100 J / cm 2 , the pulse width is nanosecond to femtosecond level, the pulse repetition frequency is 10-100 kHz, the laser beam is focused on the surface of a silver iodide target material; the transient photo-thermal effect of the laser beam is utilized to cause the silver iodide target material to be non-decomposable gasified to generate silver iodide vapor; the silver iodide vapor is condensed into 10-1000 nm silver iodide nanoparticles in the air through high-altitude low-temperature high-speed airflow to form artificial condensation nuclei; and the silver iodide nanoparticles are released to the top or inside of a target cloud layer to promote the condensation of water vapor in the cloud and the formation of precipitation.

The application discloses solar positive silver powder with high dispersity and high tap density, which is prepared by decomposing silver iodide under blue light and inducing silver single element, has high dispersity and high tap density, and can well meet the fine line and low resistance requirements of solar positive electrodes. The application also discloses a manufacturing method of the solar positive silver powder, which comprises the following steps: preparing a system A solution, adding a solution, preparing a system B solution after blue light irradiation, mixing the system A solution and the system B solution, adding a flocculating agent to obtain silver powder precipitation, washing, drying and crushing the silver powder after solid-liquid separation, and obtaining the solar positive silver powder. Only the characteristics of silver iodide decomposition under light are used, silver single element is directly obtained through physical light irradiation, nucleation sites are provided for subsequent solar positive silver powder growth, and compared with chemical reduction, silver nucleus is obtained, so that the method is more simple and efficient.

The invention belongs to the technical field of photocatalytic materials, and particularly relates to a method for preparing a photocatalytic material by modifying a silver iodide / bismuth oxyiodide n-n type heterojunction with carbon quantum dots. The preparation method comprises the following steps: firstly, taking pure natural bamboo cellulose as a carbon source, preparing carbon quantum dot powder by a mild hydrothermal method, and preparing the carbon quantum dot powder into a carbon quantum dot solution; then adding the carbon quantum dot solution into a solution for preparing bismuth oxyiodide, and drying to obtain a bismuth oxyiodide / carbon quantum dot composite material; and uniformly dispersing the composite material, silver nitrate and a surfactant in water, and adding a potassium iodide aqueous solution for reaction to finally obtain the carbon quantum dot modified silver iodide / bismuth oxyiodide n-n type heterojunction photocatalytic material. The preparation method is simple, environment-friendly and economical; the prepared photocatalytic material has excellent photocatalytic performance, and the degradation rate of RhB can reach 99%.

The application relates to a nuclear power plant accident solution analysis method, device, equipment and storage medium, comprising the following steps: determining the total reaction surface area of silver particles in a solution in a current period based on a first parameter of the silver particles, a second parameter of silver iodide and a solution volume in the current period; determining the generation amount of silver iodide in the solution in the current period according to the total reaction surface area of the silver particles in the solution, inherent properties, a first chemical reaction rate constant of the solution and the solution volume; determining the decomposition amount of the silver iodide in the solution in the current period according to the dose rate of a pool in a containment and a second chemical reaction rate constant of the solution; and determining the residual amount of the silver iodide based on the generation amount and the decomposition amount of the silver iodide in the solution in the current period. Compared with the result obtained by manual estimation, the application is more efficient and more accurate.

The application discloses a composite titanium dioxide interface bonding sterilizing agent and a preparation method thereof, and belongs to the technical field of inorganic antibacterial materials. The sterilizing agent is in-situ compounded by anatase titanium dioxide, cerium bromide and silver iodide, and the molar amount of the cerium bromide is 0.02-0.08 and the molar amount of the silver iodide is 0.04-0.20, with the molar number of the titanium dioxide being 1. The components are compounded through crystal face matching, chemical bond matching and energy band gradient matching to form a continuous interface bonding structure of Ti-O-Ce-Br-Ag-I and constitute a ternary coherent heterojunction. The application realizes efficient cooperation through crystal face matching, chemical bond matching and energy band gradient matching, generates high-activity oxygen species under visible light to realize rapid sterilization, realizes long-acting bacteriostasis through controllable release of Ag+ and I-, and improves the stability of the system by means of Ce3+ / Ce4+ circulation. The preparation adopts a low-temperature alcohol heating process, is suitable for industrial production, and has the advantages of mild conditions, no calcination and the like. The obtained sterilizing agent has the advantages of fast sterilization, long bacteriostasis period, high stability, non-toxicity, environmental protection and the like, and can be applied to the fields of medical disinfection, water treatment, air purification and antibacterial coating and the like.

The application discloses a kind of based on cloud physics parameter's silver iodide artificial precipitation snow catalytic potential quantitative method and device, belong to atmospheric science technical field.Method includes: the total nucleation proportion of silver iodide particle is calculated and is normalized, obtains the normalized nucleation conversion rate score;The ice crystal potential proportion that can effectively participate in begeleng process after catalysis, supersaturation relaxation time scale are calculated, according to ice crystal potential proportion, supersaturation relaxation time scale, effective conversion time is calculated and is normalized, obtains the normalized conversion rate score;Effective liquid water path is calculated and is normalized, obtains the normalized liquid water content score;The normalized nucleation conversion rate score, the normalized conversion rate score, the normalized liquid water content score are weighted summation, obtains the catalytic potential comprehensive score of the catalytic potential quantitative result of characterizing.This application can realize the quantitative evaluation of cold cloud catalytic operation potential.

This invention provides a lithium metal anode, its preparation method, and its application. The lithium metal anode includes a lithium metal matrix and an activation layer covering at least a portion of its surface; the lithium metal matrix includes lithium and silver; the activation layer includes lithium nitride and a first silver halide, wherein the first silver halide includes silver iodide. This invention provides an activation layer with specific chemical activity on the surface of a silver-containing lithium metal anode. Silver iodide can form lithium transport channels, activating dead lithium and improving the battery's cycle performance. Simultaneously, Li3N is a good SEI component, which can inhibit dendrite growth, isolate the electrolyte from contact with the anode, reduce active lithium loss, and further improve battery cycle performance. Furthermore, halogens existing in the form of silver halides are resistant to high voltage and not easily oxidized; therefore, high-voltage cathode materials with higher energy density can be selected to achieve a significant improvement in the cycle performance of high-energy-density lithium metal batteries.

The utility model relates to the technical field of artificial rain enhancement, and provides a rain enhancement flame furnace special for a rain enhancement hail suppression air cannon, which comprises a flame furnace main body, a smoke guide pipe is fixed in the middle of the top surface of the flame furnace main body, a support ring is fixedly connected to the top end of the smoke guide pipe in a penetrating manner, and a support column is fixed on the edge of the top surface of the support ring. A rain cover is fixed to the top end of the supporting column, the outer side of the upper end of the smoke guiding pipe is movably sleeved with a smoke sealing cover, and a smoke outlet hose is fixed to the outer wall of the smoke sealing cover. Silver iodide catalysts generated by the flame furnace body are gathered together through the smoke sealing cover and supplied to the air storage tank of the rain enhancement and hail suppression air cannon through the smoke outlet hose, so that the rain enhancement and hail suppression air cannon can quickly send the catalysts to the high altitude, the speed of artificial rain enhancement operation is increased under the emergency condition, the position of the smoke sealing cover can be adjusted through movement, and the purpose of improving the working efficiency is achieved. Normal use of the flame furnace body is not affected at ordinary times, one more choice is provided for workers, and artificial precipitation increasing operation is facilitated.

This application discloses a method for curing silver iodide, a ceramic curing body, and its applications. The method for curing silver iodide provided in this application, considering the widespread use of silver iodide in the treatment of radioactive iodine, directly uses silver iodide as a raw material, mixes it with barium source salt and sodium iodide salt raw materials, and prepares a ceramic curing body through steps such as dry pressing, reaction, and sintering, thereby curing radioactive iodine within the ceramic curing body. This method is simple, low-cost, and highly applicable, and can cure silver iodide with a content of 4.44–35.40 wt%. Compared with traditional iodine curing methods, it is more practical and can be applied to the disposal of radioactive iodine waste.

The invention belongs to the technical field of material chemistry, and discloses a preparation method of bismuth-doped silver sulfide quantum dots and a photoelectronic device. The preparation method comprises the following steps: (1) dissolving silver iodide into a short-chain organic amine solution to form a solution A; (2) dissolving N, N-diphenylthiourea and bismuth iodide into N, N-dimethylformamide to form a solution B; and (3) under the condition of normal temperature, dropwise adding the solution A into the solution B, and stirring to prepare the bismuth-doped silver sulfide quantum dot. The bismuth-doped silver sulfide colloidal quantum dots can be prepared under the condition of normal temperature; the preparation method is simple in operation and convenient in product post-treatment, the obtained product can be directly used for film formation, and an environment-friendly optoelectronic device based on the silver sulfide colloid quantum dots can be conveniently constructed.

The invention belongs to the field of preparation and application of nano materials, and discloses a simple method for preparing small-size silver halide (AgX: X = Cl, Br and I) nano particles. The preparation method comprises the following steps: respectively dropwise adding an ethylene glycol solution of silver nitrate and an ethylene glycol solution of sodium iodide into a stirred oleylamine phase; the small-size silver iodide nanoparticles are prepared by a method for controlling precipitation of silver ions and iodide ions in an oleylamine phase. The method has the main advantages that (1) the process is simple, the operation is convenient, and only three steps of solution preparation, stirring control and centrifugal separation are needed; and (2) the preparation process has good repeatability and controllability, and the average size of the synthesized nanoparticles can be controlled within 10nm. And (3) the prepared silver iodide nanoparticles have the characteristics of large specific surface area, high active sites and the like, and are suitable for preparing photocatalysts, artificial rainfall agents, CT contrast agents and the like.

The present invention discloses a low-altitude fog elimination device for unmanned aerial vehicles, belonging to the technical field of unmanned aerial vehicles; it includes an airframe, a wind power assembly arranged below the airframe, and an silver iodide smoke stick installed at the outlet end of the wind power assembly; the wind power assembly includes: a high-speed fan, and a flow guide cover with a rear-end contraction arranged at the air outlet end of the high-speed fan; the silver iodide smoke stick is inserted into the straight tube at the tail end of the flow guide cover; the high-speed fan is provided with an electric heating mechanism, and the silver iodide smoke stick is provided with an ignition mechanism. In the present invention, data fusion calculation is carried out to achieve accurate perception of fog concentration; the accuracy and stability of fog detection are improved, providing more comprehensive and reliable information support for fog elimination operations; through auxiliary components, the flexibility, reliability and efficiency of fog elimination operations are improved; according to fog concentration and other environmental parameters, parameters such as the power of the wind power assembly and the silver iodide release amount are adjusted in real time to achieve more intelligent and environment-adaptive fog elimination operations.

This invention relates to a method for rapid detection of acetonitrile in gases, belonging to the technical field of environmental pollutant detection technology. The method involves placing a test strip in the environment of the gas to be detected, observing the color change of the test strip, and qualitatively or quantitatively determining the acetonitrile concentration based on the color change. The test strip is prepared as follows: Step 1, dissolving 1.0-3.0 mmol of N,N-diphenyl-4-(quinoline-5-yl)aniline in 1.0-3.0 mL of N,N-dimethylacetamide, and adding 40.0-50.0 μL of hydroiodic acid aqueous solution to form solution A; dissolving 1.0-3.0 mmol of silver iodide in 1.0-3.0 mL of saturated potassium iodide aqueous solution to form solution B; mixing solutions A and B, and allowing them to stand to produce yellow crystals, forming the target analyte; Step 2, uniformly distributing the target analyte onto filter paper using a dispersion liquid, and then air-drying or baking to form the test strip. This invention enables rapid qualitative or quantitative detection of acetonitrile in gases.

The utility model relates to the technical field of unmanned aerial vehicle rainfall, and provides an unmanned aerial vehicle for artificial rainfall, which comprises an unmanned aerial vehicle main body, and the unmanned aerial vehicle main body is provided with a vehicle body and wings arranged on two sides of the vehicle body; the vehicle arms are parallel to the vehicle body and perpendicular to the wings, first mounting grooves are formed in the two ends of each vehicle arm, driving motors are mounted in the first mounting grooves, and the driving motors are used for driving the propellers to rotate so that the unmanned aerial vehicle body can take off or land; and a connecting frame is arranged on the machine arm and is used for hanging a silver iodide cigarette bar. Compared with traditional cannonball launching, the unmanned aerial vehicle in the scheme can work repeatedly; a traditional cannonball mode needs professional personnel to drive a professional vehicle to a specific place for launching, and is limited by terrains, however, in the scheme, the unmanned aerial vehicle is not limited by the terrains and can be remotely controlled and take off; during large-area precipitation enhancement, the unmanned aerial vehicle in the scheme can complete precipitation enhancement by one aircraft through high navigational speed and long endurance, the coverage area is large, the efficiency is high, and the time is saved.

The invention discloses a method for simulating the diffusion range of a silver iodide catalyst generated by a ground smoke furnace, and the method comprises the steps: collecting multi-source observation data of a preset region, and carrying out the preprocessing of the multi-source observation data; the multi-source observation data comprises temperature, humidity, horizontal wind direction wind speed, vertical wind direction wind speed, total solar radiation, total cloud amount, thin cloud amount, thick cloud amount and cloud conditions; determining atmospheric stability according to the multi-source observation data, and obtaining an appropriate operation condition according to the atmospheric stability and the multi-source observation data by adopting an operation condition discrimination algorithm; determining parameters of a Gaussian point source diffusion model, and inputting catalyst data and the operation adaptation condition into the Gaussian point source diffusion model to obtain simulated diffusion density of the catalyst; parameters of the Gaussian point source diffusion model comprise a coordinate system, flue gas uplift and a diffusion coefficient; the Gaussian point source diffusion model is adopted to reversely deduce the rising height and the number of cigarette bars and verify the rising height and the number of cigarette bars, and if verification passes, the catalyst simulation diffusion density is output.

The invention discloses a preparation method and application of a bismuth iodide complex formula novel cold cloud catalyst, the bismuth iodide complex formula novel cold cloud catalyst comprises bismuth iodide, silver iodide and an adhesive, the mass ratio of bismuth iodide to silver iodide is 1: (1-10), and the ratio of the total mass of bismuth iodide and silver iodide to the mass of the adhesive is 1: (1-10). The bismuth iodide powder with high purity and small particle size is beneficial to dispersion during sublimation, is environment-friendly, has a low melting point, is easy to heat and sublimate, can provide iodide ions in a cloud layer to compensate iodine lost by sublimation of silver iodide, and meets the actual requirement of environmental protection at the same time. The bismuth iodide can be fully combusted and sublimated to form aerosol with high bismuth iodide content, so that the catalytic efficiency of the catalyst is improved.

The invention discloses a bulk beta-phase silver iodide single crystal material and a preparation method thereof, belongs to the technical field of ionic crystal materials, and is characterized in that a bulk beta-AgI single crystal is prepared in a room temperature environment by adopting an anti-solvent method and taking a potassium iodide solution as a good solvent and distilled water as an anti-solvent. According to the bulk beta-phase silver iodide single crystal material and the preparation method thereof, the prepared bulk beta-AgI crystal has good appearance, good thermal performance and high stable temperature, and the method provides new thoughts and conditions for subsequent growth of the crystal and preparation of devices and shows good application prospects.

The invention discloses trifluorosucrose and a preparation method thereof, an atomization matrix, an electronic atomization device and a buccal product, and the preparation method comprises the following steps: in a first organic solvent, under the action of a first catalyst, sucralose and iodide are subjected to a first reaction to obtain triiodosucrose and chloride; in a second organic solvent, under the action of a second catalyst, triiodo sucrose and silver fluoride are subjected to a second reaction to obtain trifluorosucrose and silver iodide; wherein the reaction formula of the first reaction is as follows: nC12H19Cl3O8 + 3MIn-> nC12H19I3O8 + 3MCln; and the reaction formula of the second reaction is as follows: C12H19I3O8 + 3AgF to C12H19F3O8 + 3AgI. According to the preparation method of the trifluorosucrose, the trifluorosucrose can be prepared, compared with sucralose, the trifluorosucrose has better high temperature resistance, the sweetness of the trifluorosucrose is equivalent to that of the sucralose, and the trifluorosucrose can be used as a sweetening agent and is particularly suitable for application scenes in a high-temperature environment.

The invention discloses a solid electrolyte film with high silver ion conductivity at room temperature and a preparation method thereof, the solid electrolyte film comprises the following chemical general formula: (100-x-y) GeS < 2-x > Sb < 2 > S < 3-y > AgI, x is equal to 30-73, y is equal to 28-67, and the grain gap is within 50nm. According to the preparation method, flexible regulation and control of sputtering process parameters are achieved through the double-target co-sputtering technology, so that the film keeps high silver iodide content, meanwhile, the size of grain gaps is controlled, high-speed transmission of silver ions in the film is guaranteed, the room-temperature silver ion conductivity of 5 * 10 <-4 > S / cm or above is obtained, product components are limited loosely, and the preparation method is suitable for large-scale production. And the technology universality is high.

The invention discloses a method for preparing high-quality Ag2Se colloidal quantum dot (CQDs) ink and film, comprising the following steps: S1, mixing an Ag2Se CQDs solution with a ligand solution, shaking, and then centrifuging to obtain an Ag2Se CQDs substrate at the bottom of a centrifuge tube, wherein the ligand solution is a mixed solution of silver iodide, potassium iodide, and N,N-dimethylformamide; S2, adding n-octane to the Ag2Se CQDs substrate, shaking for 30 seconds, and then washing the substrate; S3, adding n-butylamine, n-hexylamine solution, and ligand solution to the Ag2Se CQDs substrate after washing several times, standing for 2 minutes, and then shaking for 1 minute, adding ethyl acetate, and centrifuging to obtain the Ag2Se CQDs substrate at the bottom of the centrifuge tube; S4, adding a mixed solution of N,N-dimethylformamide, dimethyl sulfoxide, n-butylamine, β-phenylethylamine, and n-hexylamine to the Ag2Se CQDs substrate, shaking, and then centrifuging to obtain the final Ag2Se The present invention realizes the preparation of liquid phase Ag2Se CQDs ink for the first time through the steps of preparing CQDs substrate, the preparation method is simple and effective, and the prepared Ag2Se CQDs film is smooth and uniform with low roughness.

This application relates to the field of target vaporization technology, specifically a target vaporization platform. The main purpose is to realize the vaporization of silver iodide targets by laser. The main scheme includes a base (1), an adjustment mechanism is provided at the upper end of the base (1), a wire management box (2) is provided at the left end of the adjustment mechanism, an equipment box (3) is fixedly installed at the left rear end of the wire management box (2), a laser device (31) is fixedly installed at the lower end of the equipment box (3), a U-shaped plate (4) is fixedly installed at the rear end of the wire management box (2), a suspension (41) is fixedly installed at the lower end of the U-shaped plate (4), a lifting base (42) is provided at the bottom of the suspension (41), a lifting platform (43) is fixedly installed at the rear end of the lifting base (42), a fixing device is fixedly installed on the lifting platform (43), an installation plate (44) is fixedly installed at the upper end of the suspension (41), and a stepper motor (45) is fixedly installed on the installation plate (44).

The application relates to the technical field of solid-state batteries, and discloses a full-solid-state lithium-selenium battery composite positive electrode material and a preparation method and application thereof, wherein the composite positive electrode material comprises elemental selenium, silver iodide, conductive carbon and a sulfide solid-state electrolyte; according to the total mass percentage of the elemental selenium, the silver iodide, the conductive carbon and the sulfide solid-state electrolyte, the elemental selenium accounts for 25-35%, the conductive carbon accounts for 10-20%, the molar ratio of the elemental selenium to the silver iodide is 8-32:1, and the balance is the sulfide solid-state electrolyte; and the charge-discharge voltage window of the composite positive electrode material is 0.8-1.8 V. The elemental selenium positive electrode is modified by AgI, in-situ reaction of elemental silver nanoparticles and lithium iodide phases can be generated under the charge-discharge voltage window, the electron and ion collaborative transmission channel is greatly widened, the solid-solid interface impedance is reduced, the volume shrinkage and expansion are effectively relieved, and therefore the composite positive electrode material exhibits good rate performance and long cycle stability.

The application discloses a quantitative analysis method for artificial rain enhancement effect based on influence area fine calculation, which comprises the following steps: obtaining an influence area according to artificial ice crystal concentration or silver iodide concentration in a catalyst diffusion area of artificial seeding; extracting and qualitatively analyzing radar products in the influence area; performing space-time matching on the influence area and the radar products, and calculating the mean value and distribution of radar parameters in the influence area; performing spatial distribution and time sequence change analysis on the radar parameters, and calculating the parameter change and variability of the radar products in the influence area; and quantitatively analyzing the parameter change and the variability, and giving the rain enhancement operation effect. The method can not only improve the precision of quantitative analysis of artificial rain enhancement effect based on influence area fine calculation, but also has good interpretability, and can be directly applied to a quantitative analysis system for artificial rain enhancement effect.

A coating composition containing silver ions and an isothiazolinone derivative as antimicrobial agents, wherein the silver ions and the isothiazolinone derivative are homogeneously dispersed in a liquid matrix and their total concentration is not more than 10% by weight of the matrix, and further the weight ratio of silver ions, calculated as elemental silver, to isothiazolinone derivative is 1:50 to 50:1, wherein the isothiazolinone derivative is selected from the group consisting of 2-n-octyl-4-isothiazolin-3-one and 2-octyl-2H-isothiazolin-3-one and / or salts thereof, and further wherein the silver ions are contained as a silver salt, wherein the silver salt is selected from silver carboxylates, silver fluoride, silver bromide, silver phosphate, silver phosphate glass, silver iodide, silver carbonate, and any combination of the aforementioned silver salts.

The invention relates to a method for rapidly detecting acetonitrile in gas, which belongs to the technical field of environmental pollutant detection technology, a test paper sheet is placed in a gas environment to be detected, the color change of the test paper sheet is observed, and the acetonitrile concentration is qualitatively judged or quantitatively judged according to the color change of the test paper sheet, the test paper sheet is prepared by the following steps: step 1, dissolving 1.0 to 3.0 mmol of N, N-diphenyl-4-(quinoline-5-yl) aniline in 1.0 to 3.0 mL of N, N-dimethylacetamide, and adding 40.0 to 50.0 mu L of a hydroiodic acid aqueous solution to form a solution A; dissolving 1.0-3.0 mmol of silver iodide in 1.0-3.0 mL of a saturated potassium iodide aqueous solution to form a solution B, mixing the solution A and the solution B, and standing to generate a yellow crystal to form a target object; and 2, uniformly distributing the target object on the filter paper sheet through the dispersion liquid, and airing or drying to form the test paper sheet. According to the invention, rapid qualitative or quantitative detection of acetonitrile in gas can be realized.

The application relates to the technical field of functional nanocomposites, and discloses a preparation method of modified conductive carbon black dispersion and the modified conductive carbon black dispersion and application thereof. The method comprises the following steps: (1) mixing conductive carbon black, coffee residue, grinding agent and water, adjusting the pH value of the mixed solution to alkalinity, and grinding at normal temperature to obtain a primary carbon black dispersion; (2) grinding nano silver iodide, nano palladium and the primary carbon black dispersion at normal temperature to obtain a carbon black composite dispersion in-situ modified by silver and palladium; and (3) grinding water-based polyurethane and the carbon black composite dispersion in-situ modified by silver and palladium at normal temperature to obtain the modified conductive carbon black dispersion. The core advantage of the method lies in that through multi-step synergistic action, efficient regulation and composite modification of the surface properties, dispersibility and functionality of the carbon black material are realized, and the modified conductive carbon black dispersion is attached to the surface of textiles to obtain a durable, antibacterial and conductive material.

The invention relates to a method for measuring the content of iodine-129 in aerosol, which comprises the following steps: putting a quantitative aerosol sample into a digestion tank, and adding dilute ammonia water and an I-125 tracer agent into the digestion tank; substances in the digestion tank are digested based on microwave digestion, and digestion liquid is filtered and reserved; taking a first volume of digestion solution and an I-125 tracer solution with the same volume, and determining the content of iodide ions entering the digestion solution in the aerosol sample to obtain an iodine recovery rate; acquiring the concentration of I-127 in the digestion solution by adopting an inductively coupled plasma mass spectrometry technology; sequentially adding nitric acid, an iodine standard solution and a silver nitrate solution into the digestion solution to obtain a silver iodide precipitate; the silver iodide precipitate is dried, silver powder is mixed, and the ratio of I-129 to I-127 in the silver iodide precipitate is detected; and calculating the concentration of the I-129. The technical effects that the detection method is simple and the detection time is shortened are achieved.