45 results about "Thallium" patented technology

The invention discloses an ultratrace mercury isotope analysis method, and relates to the technical field of environmental analysis. The method comprises the following steps: purging a liquid sample to be detected by nitrogen in a stannous chloride atmosphere, and trapping and concentrating mercury into a gold trapping tube; pyrolyzing the pyrolytic gold trapping tube to release mercury vapor; pyrolytic mercury vapor and thallium isotope internal standard aerosol are mixed to serve as a sample injection sample, and the sample injection sample is introduced into a multi-receiver inductively coupled plasma mass spectrometry; acquiring a mercury instantaneous signal and a thallium isotope signal; and calculating the mercury isotope ratio by adopting least square linear regression fitting in combination with a thallium internal standard ratio correction algorithm. According to the method, the instantaneous mercury isotope signal is generated by online combination of gold trapping and multi-receiver inductively coupled plasma mass spectrometry, the instantaneous signal is strategically collected and processed, the determination concentration of isotope analysis can be greatly reduced, the sensitivity of the method is remarkably improved, and direct determination of mercury isotope composition in a water sample with the concentration of 10 ng L <-1 > is met.

The invention discloses a fluorine-doped alpha-type manganese dioxide nanotube, a preparation method thereof and application of the fluorine-doped alpha-type manganese dioxide nanotube as a thallium adsorption material, and belongs to the technical field of thallium wastewater treatment. A manganese source solution, a fluorine source solution and an inorganic acid are mixed and then subjected to a hydrothermal reaction, and the fluorine-doped alpha-phase manganese dioxide nanotube is obtained, has the advantages of being large in specific surface area, developed in pore structure, rich in surface active sites and the like, can be used as a thallium adsorption material for repairing thallium-polluted water, can quickly, efficiently and selectively remove thallium ions in wastewater, and has a good application prospect. And the purpose of water purification is achieved.

A quantitative detection method of thallium content in converter graphite ball, steps include: 1) the pretreatment of converter graphite ball; 2) the preparation of standard solution series; 3) the detection of thallium content in converter graphite ball.The application finds that the suitable pretreatment method of converter graphite ball is carbon removal by burning, and then high-chloric acid and dilute nitric acid are used to dissolve salt, by which the converter graphite ball can be completely dissolved, thereby the stability of quantitative determination of thallium content in converter graphite ball is improved, the pretreatment method is simple, fast and operable; the method is suitable for the quantitative detection of thallium content in converter graphite ball with thallium content not less than 0.0062 μg / L, the recovery rate of thallium is as high as 99.1%, the analysis accuracy is high, the detection lower limit is as low as ppb level, the sensitivity is high, and the method has the advantages of simple operation, simple analysis condition and low labor intensity.Therefore, the application has significant economic benefits and the advantages of simplicity and economy.

The invention discloses a method suitable for on-site analysis of the valence state of thallium in water. The method comprises the following operation steps: step 1, collecting and separating a water sample; step 2, acidizing treatment; 3, Tl (I) and Tl (III) are separated; 4, total thallium is measured; step 5, Tl (I) determination; the invention relates to the technical field of atomic spectrum metal element analysis, and the method has the beneficial effects that by combining an electrochemical separation technology with a Chelex-100 solid-phase extraction column and cooperating with a portable liquid cathode glow discharge thallium measurement instrument, high-sensitivity field detection of Tl (I) and Tl (III) is realized, the detection limit is lower than 1.0 g / L, and the repeatability is RSDlt; the analysis period of a single sample is less than or equal to 30 minutes, the weight of equipment is only 5kg, battery power supply is supported, and acidification-separation-detection integrated operation can be completed outdoors without professional laboratory conditions.

The invention provides a method for rapidly detecting the content of thallium in ore and an occurrence state analysis method. The method for rapidly detecting the thallium content in the ore comprises the following steps: S1, providing a plurality of ore samples; measuring the manganese element content, the iron element content and the thallium element content of the multiple ore samples, and analyzing the mass ratio of the manganese element content to the iron element content in each ore sample; according to the mass ratio of the manganese element content to the iron element content and the thallium element content in the multiple ore samples, the quantitative relation between the mass ratio of the manganese element content to the iron element content and the thallium element content is obtained through fitting; s2, providing an ore sample to be detected; determining the manganese element content and the iron element content of the to-be-detected ore sample, and analyzing the mass ratio of the manganese element content to the iron element content; and analyzing the calculated value of the thallium content in the to-be-detected ore sample according to the obtained mass ratio and the quantitative relationship. According to the method, the thallium content in the ore can be rapidly and relatively accurately detected.

The invention relates to a device for removing thallium metal in water resources, which comprises a barrel body I provided with a cover plate, a barrel body II arranged at the bottom of the cover plate, a necking part arranged at the bottom of the barrel body II, an extrusion mechanism arranged in the necking part, a liquid outlet mechanism arranged on the outer side of the necking part, a barrel body arranged on the cover plate, a hole-shaped structure arranged on the side wall of the barrel body in the barrel body II, and a water outlet mechanism arranged on the side wall of the barrel body in the barrel body II. Discharging openings are formed in the side walls of the upper end and the lower end of the barrel body, a material collecting mechanism I and a material collecting mechanism II corresponding to the discharging openings are further arranged at the upper end and the lower end of the barrel body, a cleaning seat is arranged in the barrel body, a liquid inlet pipe is arranged on the barrel body above the cleaning seat, a screw driven by a motor is further arranged in the cleaning seat, and the liquid inlet pipe is communicated with the liquid inlet pipe. The bottom in the necking part is provided with a stirring paddle I fixed to the screw rod, the bottom end of the screw rod extends to the bottom in the barrel body I and is movably connected with a cleaning mechanism, a liquid inlet mechanism is arranged in the screw rod, and the bottom of the necking part is provided with a circulating mechanism connected with the liquid inlet mechanism. The device is simple in structure and convenient to use.

The invention discloses a method for comprehensively enriching and recovering cadmium and thallium from complex arsenic sulfide slag, belongs to the technical field of harmless treatment of dangerous waste residues and resource recovery of rare and noble metals, and aims to solve the problems that the existing process is difficult to realize fractional separation of fluorine, chlorine, arsenic, cadmium and thallium in the arsenic sulfide slag, and the thallium is low in recovery rate and insufficient in purity. According to the method, fluorine and chlorine and thallium arsenic-cadmium lead are separated through graded alkaline leaching; the cadmium-containing lead slag is subjected to zinc electrodeposition waste liquid acid leaching and sodium sulfite and citric acid purification, and cadmium-containing coarse filtrate is obtained; adjusting the pH value of the thallium-containing arsenic liquid step by step, and adding sodium hydrosulfide for precipitation to obtain high-purity thallium slag; according to the method, no toxic gas is generated, the emission of wastewater is reduced by 80%, conventional equipment is used, industrialization is easy, and unification of harmlessness of hazardous waste and efficient recycling of resources is achieved.

The application discloses a mineral adsorbent and a preparation method thereof. The prepared mineral adsorbent is composed of illite powder, zeolite powder, fly ash, coal gangue powder, dolomite powder and calcium carbonate. The preparation method comprises the following steps: S1, crushing illite, zeolite, coal gangue and dolomite to obtain illite powder, zeolite powder, coal gangue powder and dolomite powder; S2, putting the illite powder, zeolite powder, fly ash, coal gangue powder, dolomite powder and calcium carbonate into a mixer to wet grind to obtain mixed wet materials; and S3, putting the mixed wet materials into a calciner to calcine to obtain the powder-shaped mineral adsorbent. The application has a high removal rate for pollutants in waste gas, can effectively reduce the concentration of dioxin, particulate matter, nitrogen oxides, sulfur dioxide, carbon monoxide, mercury, cadmium, thallium and compounds thereof, antimony, arsenic, lead, chromium, copper, cobalt, manganese and nickel compounds in incineration waste gas.

The application belongs to the technical field of solid waste treatment, and particularly relates to a method for synergistically treating beryllium and thallium-containing waste residues. The method comprises the following steps: pretreating the beryllium and thallium-containing waste residues to obtain homogenized slag; mixing the homogenized slag with inorganic mineral materials, wherein the inorganic mineral materials comprise at least one of fly ash, zeolite and steel slag; adding water to obtain a mixed system containing the homogenized slag and the inorganic mineral materials, stirring, and curing the mixed system. The method can simultaneously and efficiently treat beryllium and thallium in the waste residues, and has mild reaction conditions and no secondary pollution.

The invention provides an intelligent identification and optimization system and method for thallium enrichment and cadmium recovery in the zinc hydrometallurgy process, and belongs to the field of non-ferrous metal metallurgy and intelligent optimization control. The system comprises a thallium enrichment process intelligent optimization module based on incoming material identification and a cadmium recovery process target optimization module. According to the method, thallium content data of mixed zinc concentrate and thallium-containing and cadmium-containing slag in MES are grabbed, 8 g / t, 15 g / t and 200 g / t are taken as threshold values respectively, thallium removal and cadmium recovery processes are intelligently matched, after process rationality verification, a multi-objective function is established through a deep learning model, and an optimal operation scheme is solved by adopting an NSGA-II algorithm. The method adapts to the raw material thallium content fluctuation scene, no toxic reagent is introduced, collaborative optimization of thallium enrichment and cadmium recovery is achieved, the process stability and economical efficiency are improved, and cost reduction and efficiency improvement are achieved for enterprises.

The invention provides a Tl-series superconducting thin film and a preparation method thereof, and belongs to the field of superconducting thin film materials. The preparation method of the Tl-series superconducting thin film provided by the invention comprises the following steps: mixing nitrate or acetate of metal, ethylenediaminetetraacetic acid, a water-soluble high-molecular polymer and water to obtain precursor sol; the metals are thallium, barium, calcium and copper; the molar ratio of thallium to barium to calcium to copper to ethylenediamine tetraacetic acid is (2-3): 2: 1: 2: (7-8); coating a substrate with the precursor sol to obtain a precursor film; and carrying out heat treatment on the precursor thin film in an oxygen atmosphere under a closed condition to obtain the Tl-series superconducting thin film. The Tl-series superconducting thin film obtained by the preparation method provided by the invention presents a Tl-2212 phase, no impurity phase is generated, and the critical transition temperature can reach 100K and is close to the Tl-2212 theoretical superconducting transition temperature.

The invention relates to a solid bubble type rubidium, cesium and thallium adsorbent as well as a preparation method and application thereof, belongs to the technical field of rubidium, cesium and thallium adsorption, and solves the problems of low adsorption efficiency, low capacity, complex process steps, environmental pollution and difficulty in recovery and regeneration when rubidium, cesium and thallium are extracted from Prussian blue (PB) and analogues (PBAs) thereof in the prior art. The method comprises the following steps: activating solid bubbles, and reacting with a silanization reagent; dipping the modified solid bubbles into a solution containing [Fe (CN) 6] < 3->, dropwise adding a transition metal salt solution, and reacting; the PB or PBAs adsorbent is grafted on the surface of the solid bubble matrix through in-situ growth, and the matrix is spherical and has a relatively high specific surface area, so that the dispersion of the adsorbent can be promoted, and the adsorption performance on rubidium, cesium and thallium is effectively improved; the recycling difficulty of the adsorbent can be reduced due to the characteristic of low density, the adsorbent is endowed with excellent cycling stability due to relatively high mechanical strength and a stable material, the adsorbent can be recycled for a long time, and the cost is reduced; the preparation method is simple and environment-friendly, and industrial application is easy to realize.

The invention discloses a method for measuring gallium, germanium, silver, indium, tellurium and thallium in nickel, and particularly relates to the technical field of metal trace element measurement. The method comprises the following steps: preparing a sample, preparing a sample blank solution and a sample solution, preparing a standard solution, preparing a working curve solution, drawing a working curve by adopting an inductively coupled plasma mass spectrometer, measuring the sample, processing experimental data and the like. After the interference of the nickel matrix is eliminated, the contents of gallium, germanium, silver, indium, tellurium and thallium are directly determined by the inductively coupled plasma mass spectrometry, so that the analysis speed is high, the detection limit is low, the detection result is accurate and reliable, the relative standard deviation is low, the standard addition recovery rate of a sample is high, and the contents of gallium, germanium, silver, indium, tellurium and thallium in the sample can be rapidly and accurately determined.

The invention relates to the technical field of environmental engineering water treatment, in particular to a method for removing thallium element in water through modified zeolite. The invention aims to solve the technical bottlenecks that when the existing zeolite adsorbent is used for removing thallium, solid-liquid separation is difficult, and the selective adsorption capacity on trace thallium is limited. Therefore, the invention creatively provides a composite treatment method integrating magnetic separation, multistage pore channel adsorption and biological enhancement. The preparation method is characterized in that firstly, a core-shell structure composite material with magnetic Fe3O4 as a core, natural zeolite as a middle layer and an MOF material as a shell layer is prepared through a hydrothermal synthesis and coprecipitation technology, and the material has magnetic response, high specific surface area and high affinity to thallium ions; secondly, performing functional modification on the surface of the composite material, and directionally mounting a specific thallium removal biological membrane to construct an adsorption-biotransformation synergistic system;

The invention provides a method for preparing high-purity indium through vacuum distillation coupled zone melting, and belongs to the technical field of high-purity indium preparation. The invention provides a three-step synergistic preparation method of high-purity indium, which comprises the following steps: firstly, carrying out primary purification on raw materials based on the physical difference of saturated vapor pressure of each component by adopting a vacuum distillation technology, removing most conventional impurities and providing a clean matrix; then, aiming at the stubborn impurity thallium which cannot be removed by vacuum distillation, selectively oxidizing and extracting the stubborn impurity thallium in a molten salt-metal system by utilizing the electrochemical potential difference between the stubborn impurity thallium and indium, and replacing the thallium with bismuth which is easy to subsequently treat through impurity replacement; and finally, performing final fine purification by adopting zone melting, and enriching all residual trace impurities including bismuth to the ingot tail and cutting off through multiple times of directional solidification on the basis of a solute segregation principle, so as to obtain high-purity indium.

The invention relates to the technical field of chemical analysis, in particular to a method for simultaneously detecting cadmium, tin, mercury, thallium and lead in a water sample, which adopts solid phase extraction-high performance liquid chromatography-inductively coupled plasma mass spectrometry to realize simultaneous enrichment and analysis of 13 forms of cadmium, tin, mercury, thallium and lead. The defect of low efficiency of single element sequence analysis is overcome; by optimizing online solid-phase extraction conditions and chromatographic separation parameters, the problems of high detection limit and insufficient sensitivity are solved, a feasible method is provided for simultaneous analysis of different forms of cadmium, tin, mercury, thallium and lead in the water sample, and the technical blank of simultaneous detection of forms of cadmium, tin, mercury, thallium and lead in the water sample is filled.

This invention belongs to the field of mine water treatment in metal mines, and specifically relates to a method for the deep purification treatment of thallium-containing metal mine wastewater. This method employs a combined process of "multi-element synergistic oxidation adsorption + composite sulfide precipitation + staged flocculation precipitation + activated carbon deep adsorption." It utilizes the synergistic effect of potassium permanganate, sodium hypochlorite, and ozone as a ternary oxidant to catalyze oxidation, generating MnO2 colloids with high adsorption capacity. This strongly adsorbs thallium, preventing its reduction rebound and amplifying the subsequent treatment effect through adsorption enrichment. Further treatment with a compound sulfide agent and a core-shell structured composite flocculant allows for multiple rounds of adsorption and precipitation, increasing the removal efficiency of low-concentration thallium to over 96%, and reducing the thallium concentration in the effluent to below 0.1 μg / L.

This invention discloses a preparation method and application of a material for selectively removing thallium ions from water, belonging to the field of environmental protection technology. The invention provides a material for selectively removing thallium ions from water, comprising a carrier and a composite material of graphitic carbon nitride and perovskite titanate loaded on the carrier; the carrier is carbon nanofiber; the composite material of graphitic carbon nitride and perovskite titanate is a mixed powder of graphitic carbon nitride and perovskite titanate; the perovskite titanate has a cubic crystal structure with space group Pmm; the content of graphitic carbon nitride is 4~10wt%, and the content of perovskite titanate is 25~40wt%. The material for selectively removing thallium ions from water provided by this invention, due to the stable coordination between perovskite titanate and graphitic carbon nitride with thallium ions, enhances the adsorption force and selectivity for thallium ions, resulting in more stable binding, better selectivity, and higher removal efficiency.

The application discloses a mine water thallium element analysis and detection device and relates to the technical field of thallium element analysis and detection. The auxiliary module can collect samples of different depths in the mine water. The sampling module can extend to the uppermost layer, the middle layer and the deep layer of the mine water according to the samples of different depths collected by the auxiliary module, realize the targeted collection of the samples of different water layers, fully match the vertical distribution difference characteristics of the thallium elements in the mine water body caused by factors such as water flow state and sediment adsorption, and make the convex block heads of the different secondary pipelines align with and fit the groove openings of the main pipeline, so that the adaptive communication channels are constructed, and the water samples of different depths can be correspondingly stored into the special secondary pipelines.

The invention discloses an ultra-trace thallium analysis system and method. The ultra-trace thallium analysis system comprises a pretreatment unit, a separation and enrichment unit, a pH regulation unit and a detection unit. The pretreatment unit is used for filtering, acidifying and oxidizing a water sample to be treated to obtain a pretreated water sample; the separation and enrichment unit is used for enriching thallium ions in the pretreated water sample and separating out interfering ions; the pH adjusting unit reduces the acidity of the enriched water sample to obtain a water sample to be analyzed; the detection unit receives the water sample to be analyzed and carries out thallium analysis detection on the water sample to be analyzed. Wherein the pH adjusting unit comprises a pH adjusting column, and the pH adjusting column comprises hydroxyl type resin and is used for exchanging anions in the enriched water sample and carrying out neutralization reaction with H < + > in the enriched water sample so as to reduce the acidity of the enriched water sample, so that the compatibility contradiction between the solid-phase extraction elution acidity and the liquid anode glow discharge spectrum sample introduction acidity in the prior art is overcome; meanwhile, interference cations are prevented from being introduced, and high-sensitivity analysis on trace thallium in water is realized.

This invention relates to the field of resource utilization and pollution control technology for steel solid waste, specifically disclosing a method for deep thallium removal at multiple nodes throughout the wet process of a steel solid waste treatment plant. This method incorporates a three-stage deep thallium removal process into the entire recovery process of potassium, sodium, and zinc: in the potassium and sodium recovery line, the first stage of deep thallium removal is performed on the purified potassium and sodium rinsing solution using a Na2S+Na2CO3 co-precipitation method; in the zinc recovery line, the second stage of deep thallium removal is performed on the neutral leachate after iron removal using an ultrasonic-enhanced zinc powder replacement method; and in the deeply purified zinc sulfate solution section, a third stage of guaranteed deep thallium removal is performed using zinc-based composite powder. This invention achieves the graded and efficient removal of trace heavy metal thallium by applying the most suitable thallium removal technology at different process nodes, ensuring the high purity of potassium and sodium salts and nano-zinc oxide products, and preventing the cyclic enrichment of thallium within the system.

The invention discloses a thallium removal method for a zinc hydrometallurgy system, which comprises the following steps: 1) in a neutral leaching supernatant purification process, adding potassium permanganate and ferrous sulfate in a first purification stage of a liquid purification process, and reacting for 1-2 hours; 2) adding zinc powder into the solution, adding activated carbon, and reacting for 1-2 hours; 3) adding lead acetate, and reacting for 1-2 hours; and 4) carrying out solid-liquid separation through a plate filter press, and removing purified residues. A combined thallium removal mode is adopted, so that the thallium content of the purified solution is low, the requirement of electrolytic zinc can be met, and electrolytic'plate burning 'caused by thallium is avoided; according to the thallium removal method for the zinc hydrometallurgy system, additional reaction time does not need to be increased, the thallium removal method can be synchronously carried out with the original neutral leaching supernatant liquid purification process, the production period is not prolonged, additional equipment investment is not increased, the cost is low, and the effect is good.

The invention discloses a roasting additive for extracting lithium and alkali metals, removing thallium and fixing beryllium from lithium-containing ores with low chlorine and high efficiency, an extraction method and application, and belongs to the field of extraction and smelting of lithium and alkali metals. The invention discloses a lithium-containing ore roasting additive, and aims to solve the technical problems of low leaching extraction rate of alkali metals such as lithium, high thallium concentration in brine and excessive leaching toxicity of dangerous elements in tailings in the lithium extraction process of roasting lithium ore by using composite sulfate in the prior art in order to solve the technical problems of low leaching extraction rate of alkali metals such as lithium and the like, high thallium concentration in brine and excessive leaching toxicity of dangerous elements in tailings in the prior art. Or a chloride, sulfate and a calcium-containing alkaline compound, wherein the use amount of the chloride is 0.1-15% of the mass of the lithium-containing ore. The method is used for extracting lithium or alkaline metal, or reducing beryllium and thallium contents in lithium slag or lithium slag leachate, or increasing the extraction rate of extracting lithium or alkaline metal, or reducing generation and emission of acid gas. The method is applied to the field of lithium extraction.

A method for sulfidation modification of iron-containing solid waste for chromium and thallium fixation belongs to the field of functional materials. Using iron-rich industrial solid waste as raw material, after grinding and sieving, it is activated in a water bath using organic carboxylic acids. Through a complexation reaction, the inert iron structure within the solid waste is activated, yielding a carboxylic acid-activated solid waste intermediate. This intermediate is then mixed with a sulfiding agent and subjected to a sulfidation reaction in a high-sodium environment to obtain a NaFeS2·2H2O compound, which is uniformly loaded onto the surface of the iron-containing solid waste. This material can achieve synergistic fixation of Cr(VI) reduction and in-situ adsorption of Cr(III) within a pH range of 2.5-11, expanding the pH applicability range of simple sulfur-iron reducing agents. It can also achieve the adsorption and fixation of typical toxic metal ions Tl⁺ in the environment. This invention achieves functionalization of the surface of iron-containing solid waste through simple sulfidation reaction control. The preparation process is simple, low-cost, and easy to synthesize in batches, thus realizing the resource reuse of solid waste.

The application discloses a method and device for selectively removing thallium from a thallium-containing solution. + The method uses ozone as an oxidant, and uses a shearing strengthening method during the reaction, so that Tl + Is converted into Tl2O3 which is difficult to dissolve and has good stability, thereby realizing efficient removal of thallium in the solution. The reaction equipment is composed of a stirring device, a reaction tank, a temperature control device, a shearing machine, a circulating pump and the like. Compared with other methods, the application has the advantages of low production cost, high thallium removal selectivity, small thallium removal residue yield, no introduction of impurity ions and the like, and has good industrial application value.

The invention provides a copper smelting slag separation tailing-based thallium removal agent and a preparation method thereof, and the copper smelting slag separation tailing-based thallium removal agent is prepared by taking a copper smelting slag separation tailing matrix and ferrocyanide as raw materials through pretreatment, functional modification and aftertreatment. Researches show that the perferrocyanide (Prussian blue and analogues thereof) shows extremely high selectivity and adsorption capacity on monovalent cations such as Tl < + > and Cs < + >. The cubic lattice structure provides channels with matched sizes, so that the ions can be specifically captured. The solid theoretical and technical basis is provided for efficient thallium removal by modifying the solid waste through ferrocyanide.

The present application belongs to the technical field of water pollution remediation, and particularly relates to a method for treating mine uranium tailing pond seepage water containing thallium, uranium and manganese by using real-time synthesized hydrotalcite-like compounds. The method comprises: adding industrial solid waste into the seepage water and mixing uniformly, and then adding an alkali source and mixing uniformly; the industrial solid waste contains 10wt%-100wt% of slag powder and 0-90wt% of fly ash; the alkali source is selected from at least one of alkali metal hydroxides, oxides and basic salts; and the method does not use a flocculant. Compared with the prior art, the present application realizes the transformation of waste into treasure by using raw materials and process innovation, has low cost, and has high treatment efficiency.

The present application relates to the field of non-ferrous metal recovery, and particularly relates to a method for recovering thallium from waste SCR denitration catalyst in the cement industry. The method comprises the following steps: after the waste SCR denitration catalyst is dedusted, the waste catalyst is calcined, then ground and screened to obtain waste catalyst powder; hydrogen peroxide solution and a complexing agent are mixed, stirred and heated to obtain a first solution; then the first solution is mixed with the waste catalyst powder, and reacts under mechanical stirring, then is left to stand and filtered to obtain a second solution; the second solution is heated and concentrated, then mixed with potassium iodide, and reacts under ultrasonic condition, and is left to stand and filtered. The method can recover high-quality thallium iodide products with a purity of 99.9% or above, and the thallium recovery rate can reach 99.5% or above. The present application can not only reduce the difficulty of waste catalyst treatment, but also obtain high-value-added products, which has important significance for environmental protection and resource recycling.

The application provides a method for determining ultra-low content thallium in iron ore, which adopts an extraction separation method to extract thallium from a multi-component test solution containing iron, calcium, aluminum and silicon, realizes separation and enrichment, and then determines by using an inductively coupled plasma emission spectrometer; the application utilizes the chemical properties of thallium and alkane compounds containing active oxygen substituents represented by 4-methyl-2-pentanone, adopts an extraction method for separation and enrichment, establishes a suitable analysis method, and completes the detection of ultra-low content thallium in ore.

The application discloses a kind of high-efficiency thallium-removing adsorbents for water treatment and preparation method thereof, and relates to the technical field of water treatment.The high-efficiency thallium-removing adsorbent includes halloysite nanotube carrier, mercapto silane layer grafted to the surface of the halloysite nanotube, and prussian blue particles loaded in situ on the mercapto halloysite nanotube.The adsorbent is prepared by acidification activation, mercapto modification and prussian blue in-situ loading steps.The high-efficiency thallium-removing adsorbent provided by the application has better dispersibility, mass transfer performance and salt interference resistance than conventional powdered prussian blue material;Tl (I) can be efficiently removed in a wide pH, different dosage, coexisting cation and high-salt environment;It shows high adsorption capacity in pure water and salt-containing water bodies, solving the problems of existing thallium-removing adsorbent, such as poor selectivity, limited mass transfer and insufficient salt stability in high-salt complex wastewater.