85 results about "Ion pairs" patented technology

The invention belongs to the technical field of thermoelectricity, and relates to a preparation method and application of a quasi-solid thermoelectric material capable of realizing humidity stability by means of phase separation regulation, the preparation method comprises the following steps: dissolving a negatively charged hydrophilic monomer, an electrically neutral monomer, a cross-linking agent and a photoinitiator in a solvent to obtain a precursor solution, and carrying out an ultraviolet polymerization reaction to form polyelectrolyte gel; mixing the eutectic solvent with an electrolyte aqueous solution containing redox ion pairs and lithium chloride to obtain a quaternary electrolyte system; and immersing the gel into a quaternary electrolyte system, and fully replacing the internal solution through a diffusion effect to obtain the quasi-solid thermoelectric material with stable humidity. The thermoelectric material has the advantages of excellent Seebeck coefficient, good stability, high mechanical strength, large power density and the like, can supply power to wearable electronic products in an actual humidity fluctuation environment, breaks through the main bottleneck of actual application of quasi-solid ionic thermoelectric materials based on ionized water gel, and is wide in application prospect.

The invention belongs to the technical field of membrane separation, and particularly relates to a preparation method and application of a high-permeability polyamide reverse osmosis membrane. According to the invention, the problems of high energy consumption and poor water production quality caused by non-ideal flux and rejection rate of the current reverse osmosis membrane product are solved, tetrabutylammonium bromide and acyl chloride form ion pairs to reduce hydrophobicity, a hydrogen bond network of urea destroys a hydrophobic barrier of an organic phase, and migration of acyl chloride to a water phase interface is promoted; the eutectic solvent is adsorbed on a water phase interface to form a'catalytic microenvironment ', amido of an amine monomer is attracted to be close to the interface, and the concentration of a reaction area is increased. During reaction, tetrabutylammonium bromide enables an amine monomer to stably attack a transition state of acyl chloride through electrostatic interaction, and reaction activation energy is reduced; urea and sodium hydroxide in a water phase can be jointly used as an acid-binding agent to neutralize generated hydrochloric acid so as to prevent amido protonation inactivation. The method is simple to operate and suitable for large-scale production.

The invention relates to the technical field of hydrogen purification, and discloses a palladium membrane and a preparation method thereof.The method comprises the steps that irradiation treatment is conducted on a palladium-based membrane to obtain the palladium membrane, irradiation ions are adopted to conduct irradiation on at least one surface of the palladium-based membrane in the irradiation treatment, the ion implantation dosage is 1 * 10 < 17 > ions / cm < 2 >-8 * 10 < 17 > ions / cm < 2 >, and the energy of the irradiation ions is 15 keV-2 MeV. The palladium membrane provided by the invention has the advantages of high permeation flux, excellent isotope separation effect, short activation time and stable long-term operation stability.

The invention provides an electrostatic interference elimination method for an air negative ion product. The air negative ion product comprises a negative high voltage electrode and a relative electrode. Particularly, the negative air ion product is provided with a static electricity elimination mechanism which is characterized in that a negative high-voltage electrode and an opposite electrode are electrically connected through an electric conduction medium, so that high voltage formed between the negative high-voltage electrode and the opposite electrode is applied to the electric conduction medium, and negative charges are transmitted to the opposite electrode along the electric conduction medium to be neutralized with positive charges; and static elimination is realized. Furthermore, the obvious reduction of the negative ion concentration is taken as the basis for executing the static elimination mechanism, and the execution is ended after 3-10 seconds. Or the obvious reduction of the working current of the negative ion generator circuit is taken as the basis for executing the static elimination mechanism, and the execution is ended after 3-10 seconds. The problem of electrostatic interference can be effectively solved, the air negative ion product can efficiently, stably and continuously generate high-concentration air negative ions, and a positive health effect is generated for a product user.

The invention discloses an acrylate emulsion containing a zinc ion crosslinking agent and a preparation method of the acrylate emulsion, and alkali-soluble resin containing zinc ions is used as a macromolecular surfactant to prepare a self-crosslinking polyacrylate emulsion. In the emulsion polymerization process, a Zn < 2 + > metal ion cross-linking agent is introduced, so that the problem of demulsification caused by damage of high-valence metal cations in the metal ion cross-linking agent to double electric layers of the anionic acrylic emulsion is solved, the degree of cross-linking of a latex film is remarkably improved, the fineness and the particle size of the emulsion are effectively reduced, and the preparation method is simple and easy to implement. And the latex film is endowed with a certain antibacterial function.

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.

The invention provides anion exchange resin, a preparation method thereof and an anion exchange membrane. The anion exchange resin has a structure as shown in a formula (1). Carbonyl is introduced into the formula (1), the carbonyl has strong electronegativity and conjugation ability, the carbonyl can disperse positive charges of nitrogen-containing heterocyclic cations and weaken the electron withdrawing effect of the nitrogen-containing heterocyclic cations on a skeleton structure, the polarization degree of chemical bonds of the skeleton structure is reduced, then the stability of the skeleton structure is improved, and the skeleton structure is not prone to breakage; and the structural stability of the anion exchange resin and the continuity of an ion transmission channel are ensured. Besides, carbonyl is used as a strong polar group, the carbonyl and a skeleton structure form a remarkable polarity difference, and the polarity difference can induce polymer molecules to realize nanoscale phase separation, promote the formation of a high-speed ion transmission channel, reduce the ion transmission resistance and improve the ion transmission performance of the anion exchange membrane.

This invention provides an ion-doped calcium oxalate thermochemical heat storage material and its preparation method, the chemical formula of which is Ca. 1‑ x M x C2O4·H2O, where M is a dopant ion and x is the mole fraction of the dopant ion; M includes Mg 2+ Co 2+ Zn 2+ 、Sr 2+ One or more of the following. This invention regulates the lattice parameters, local coordination environment, defect state, and microstructure of calcium oxalate by doping with ions. While maintaining the original reversibility and cycle stability of the calcium oxalate system, it further optimizes its dehydration thermal storage temperature range, thermal response boundary, structural evolution behavior, and application compatibility materials, thereby improving the thermochemical thermal storage performance of calcium oxalate from the internal structural level.

The invention discloses a Sm / Ce / Ni / Fe / Hf doped BSBNT-based ceramic material with high energy storage density under a low electric field and a preparation method thereof, aiming at Bi < 3 + >, Na < + >, Ba < 2 + > and Sr < 2 + > ions at the A site of a (Bi0. 5Na0. 5) 0.6 (Ba0. 3Sr0. 7) 0.4 TiO3 ceramic material, composite high-valence ions [Sm0. 8Ce0. 2] 3.2 < + > composed of Sm < 3 + > and Ce < 4 + > with coordination of 12 are used for doping and substitution, aiming at Ti < 4 + > ions at the B site, composite low-valence ions [Ni0. 25Fe0. 35Hf0. 4] 3.15 < + > composed of Ni < 2 + >, Fe < 3 + > and Through the composite doping modification, the dielectric temperature stability is improved while the high Pmax is maintained, the Pr is reduced and the effective energy storage density of a unit electric field is improved, so that a novel environment-friendly energy storage ceramic material with excellent comprehensive electrical properties under a low electric field is provided.

An ion-pair-bound homogeneous catalytic system, and a method for synthesizing 5-hydroxymethylfurfural. The homogeneous catalytic system comprises a quaternary ammonium salt, a homogeneous acid and water. The method comprises: mixing fructose with an ion-pair-bound homogeneous catalytic system to form a homogeneous catalytic reaction system; reacting the homogeneous catalytic reaction system under reduced pressure, and after the completion of the reaction, adding a quenching agent to quench the reaction; extracting the obtained reaction mixture; and then respectively separating 5-hydroxymethylfurfural and the ion-pair-bound homogeneous catalytic system from a light phase and a heavy phase formed after the extraction. The reaction can achieve the simple, safe and efficient synthesis of 5-hydroxymethylfurfural under mild conditions; the conversion rate of the raw material fructose is high; the yield of the target product, i.e., 5-hydroxymethylfurfural, is high; and the separation operation can be conveniently conducted. Moreover, the used ion-pair-bound homogeneous catalytic system that is formed from a quaternary ammonium salt, a homogeneous acid and water is convenient to recover and reuse. Therefore, the method is environmentally friendly and economical, and has broad application prospects.

The invention discloses thermoelectric ionic gel as well as a preparation method and application thereof. The thermoelectric ionic gel comprises the following components: a hydrophilic polymer skeleton, a zwitterion donor, a redox ion pair and water, wherein the hydrophilic polymer skeleton is prepared by reacting a hydrophilic straight-chain polymer and a hydrophilic monomer containing carbon-carbon double bonds. The preparation method of the thermoelectric ionic gel comprises the following steps: 1) dispersing a hydrophilic straight-chain polymer, a hydrophilic monomer containing a carbon-carbon double bond, a zwitterion donor, an initiator and a cross-linking agent in water for polymerization reaction to obtain ionic gel; and 2) immersing the ionized water gel into a redox ion pair aqueous solution for ion exchange, and then aging. The thermoelectric ionic gel disclosed by the invention has excellent ionic thermoelectric performance and excellent flame retardance, can realize efficient energy storage under temperature difference, and is suitable for preparing thermoelectric supercapacitors, fire early warning devices, flame-retardant materials or thermoelectric conversion materials.

The invention discloses an Nd / Ce / Co / Al / Mn doped BSBNT-based ceramic material with high energy storage density under a low electric field and a preparation method thereof, aiming at Bi < 3 + >, Na < + >, Ba < 2 + > and Sr < 2 + > ions at the A site of a (Bi0. 5Na0. 5) 0.6 (Ba0. 3Sr0. 7) 0.4 TiO3 ceramic material, composite high-valence ions [Nd0. 8Ce0. 2] 3.2 < + > formed by Nd < 3 + > and Ce < 4 + > with coordination of 12 are used for doping and substitution, aiming at Ti < 4 + > ions at the B site, composite low-valence ions [Co0. 2Al0. 5Mn0. 3] 3.1 < + > formed by Co < 2 + >, Al < 3 + > and Mn < 4 + Through the composite doping modification, the dielectric temperature stability is improved while the high Pmax is maintained, the Pr is reduced and the effective energy storage density of a unit electric field is improved, so that a novel environment-friendly energy storage ceramic material with excellent comprehensive electrical properties under a low electric field is provided.

This invention relates to the field of slickwater technology, specifically to a high-efficiency proppant-carrying slickwater. It comprises a shear-responsive smart thickener and inorganic salts dispersed in an aqueous phase; the smart thickener is composed of ABA-type temperature-ion dual-responsive block copolymers and nano-silica particles with surface-grafted hydrophobic alkyl chains and cationic groups. The slickwater of this invention exhibits ultra-low viscosity and high drag reduction during the pumping stage (low temperature, high shear); upon entering a fracture, the synergistic effect of temperature rise and instantaneous high-speed shear triggers hydrophobic association of the copolymer and interweaving of the nanoparticles, forming a three-dimensional network structure; under the low-shear environment within the fracture, the network structure self-reinforces through ordered reconstruction of ion pairs, achieving high-viscosity proppant carrying. Its core lies in transforming the inherent temperature rise and shear effects of the process into a driving force for constructing a proppant-carrying network, thereby effectively resolving the contradiction between low-friction pumping and high proppant carrying capacity in slickwater volumetric fracturing and significantly reducing reservoir damage.

The invention relates to tellurate glass for a temperature sensor and a preparation method of the tellurate glass, and belongs to the technical field of optical luminescent materials. TeO2, ZnO, ZnF2 and Gd2O3 are used as matrixes of the tellurate glass, Er2O3 and YbF3 are doped, and the preparation method comprises the following steps: grinding and heating the raw materials, annealing and polishing. The prepared tellurate glass has low phonon energy, high chemical stability, excellent thermal stability and high rare earth ion solubility. More importantly, a specific rare earth ion pair in the glass can generate two fluorescence emission peaks of which the intensity is sensitively changed along with the temperature under the pumping of a specific wavelength (such as 980nm), and high-precision temperature sensing can be realized by monitoring the fluorescence intensity ratio of the two fluorescence emission peaks. The preparation process is simple, the cost is low, and the obtained glass material has a wide application prospect in the field of non-contact optical temperature sensors.

The application relates to a method for quantitatively detecting the concentration of thioctic acid in human plasma by liquid chromatography-tandem mass spectrometry, and belongs to the technical field of biological sample detection. The method comprises the following steps: EDTA-K2 anticoagulant human plasma is taken, thioctic acid-d5 internal standard working solution is added, the mixture is uniformly mixed, acetonitrile is added to precipitate proteins, the supernatant is taken by centrifugation and is diluted; a C18 chromatographic column is used, 0.1% acetic acid aqueous solution and acetonitrile are used as mobile phases for gradient elution; mass spectrometric detection adopts an electrospray ion source negative ion mode and a multiple reaction monitoring mode, the ion pair of thioctic acid is m / z 205.100->171.100, and the ion pair of the internal standard is m / z 210.050->174.100; the peak area ratio is used as a quantitative index, 1 / C 2 weighted linear regression is used to establish a standard curve. The method has the advantages of simple pretreatment, high sensitivity, rapid analysis, strong anti-matrix interference ability, and is suitable for the detection of conventional and hemolytic and hyperlipidemic plasma samples, and can be used for pharmacokinetic research and clinical detection of thioctic acid.

The invention relates to a microelectronic metal layer etching solution which comprises the following components in parts by weight: 0.5-1 part of organic acid; 60-70 parts of inorganic acid; 10-20 parts of an organic solvent; 1-2 parts of an oxidant; 0.5-1 part of a functional agent; and 30-40 parts of ultrapure water. The invention also discloses a preparation method and application of the etching solution. The organic acid and the inorganic acid can form leaf-shaped molecules in water, and then the leaf-shaped molecules are mutually crosslinked with the functional agent and adsorbed on the metal surface through benzene rings, so that the etching rate of a titanium metal layer is ensured, the etching speed of fluorine ions on an aluminum metal layer is reduced, and a good lateral etching morphology is formed.

A method for tracing the migration path of migrating ions in a solid-state battery. The method comprises the following steps: (1) adding an ion donor material to a solid-state battery, and then subjecting the solid-state battery to a charge and discharge cycle, wherein the solid-state battery comprises migrating ions, the ion donor material is used for providing exogenous ions, the exogenous ions and the migrating ions have the same valence state and similar ion radii, and the atomic number of the exogenous ions is higher than that of the migrating ions; and (2) subjecting the solid-state battery which has completed a charge and discharge cycle to characterization analysis, so as to determine the migration path of the exogenous ions, and using the migration path as the migration path of the migrating ions in the solid-state battery. By means of using the tracing method, the migration path of migrating ions in a solid-state battery, especially in a positive electrode and a solid electrolyte of the solid-state battery, can be graphically characterized.

The invention discloses a La / Ce / Ni / Ga / Zr doped BSBNT-based ceramic material with high energy storage density under a low electric field and a preparation method thereof, aiming at Bi < 3 + >, Na < + >, Ba < 2 + > and Sr < 2 + > ions at the A site of a (Bi < 0.5 > Na < 0.5 >) < 0.6 > (Ba0. 3Sr < 0.7 >) < 0.4 > TiO < 3 > ceramic material, composite high-valence ions [La0. 7Ce0. 3] < 3 + > are formed by La < 3 + > and Ce < 4 + > with 12 coordinates for doping substitution, and aiming at Ti < 4 + > ions at the B site, composite low-valence ions [Ni0. 3Ga0. 3Zr0. 4] < 3.1 + > are formed by Ni < 2 + >, Ga < 3 + > and Zr Through the composite doping modification, the dielectric temperature stability is improved while the high Pmax is maintained, the Pr is reduced and the effective energy storage density of a unit electric field is improved, so that a novel environment-friendly energy storage ceramic material with excellent comprehensive electrical properties under a low electric field is provided.

The invention provides an ion mobility spectrometer, which comprises a migration tube, an ion separation circuit, an ion migration circuit and a detection circuit, and is characterized in that the migration tube comprises an ion separation region, an ion migration region and a detection region; the ion separation circuit is used for controlling the to-be-detected ions with different migration rates to leave the ion separation region at different rates after the to-be-detected ions corresponding to the to-be-detected gas enter the ion separation region; the ion migration circuit is used for controlling the positive ions to leave the ion migration region in the direction close to the first side tube wall of the migration tube and controlling the negative ions to leave the ion migration region in the direction close to the second side tube wall of the migration tube after the ions to be detected enter the ion migration region; the detection circuit is used for detecting the signal intensity corresponding to the to-be-detected ions after the to-be-detected ions enter the detection area, and the signal intensity is used for detecting the to-be-detected gas. According to the scheme, the detection sensitivity is effectively improved, the detection precision is higher, and the detection result is more accurate and reliable.

The present invention relates to the field of controlled nuclear fusion in nuclear energy applications. The title of the present invention is a positive-ion circular-collision nuclear fusion reactor. The technical problems to be solved by the present invention are: the nuclear fusion reaction times are short and the energy gains Q are less than 1. Our technical solution is: using an accelerator to accelerate hydrogen isotope positive ions to (0.1-3) Mev, and then inducing nuclear fusion reactions by circular collision. In the past, it was believed that the probability of inducing nuclear fusion by collision was less than 0.0001. We simultaneously employ five technical schemes to solve the problem of low probabilities of positive ion collision-induced nuclear reactions: 1. using the accelerator to accelerate the positive ions to (0.1-3) Mev; 2. using circular collision to induce nuclear fusion; 3. enabling collision in a collision area having a large cross section; 4. enabling collision in a long collision area; and 5. using a plurality of sets of electromagnetic lenses to focus ion beams to increase the ion density. In the present invention, energy generated by nuclear fusion is converted into heat energy in an energy conversion area, and then high-pressure steam is generated for power generation.

The utility model discloses a negative ion machine which comprises a shell, a negative ion working cavity and an ionization assembly mounting cavity which are divided by a bottom plate are arranged in the shell, and ionization plate assemblies are arranged in the negative ion working cavity and are divided by partition plates in the negative ion working cavity to form a plurality of negative ion generating cavities. A working opening communicated with the outside is formed in the cavity wall of the negative ion generating cavity, negative ions formed in the generating cavity can be rapidly released into surrounding air, the air purification efficiency is improved, meanwhile, an indicator lamp is arranged outside the shell, a control assembly can visually and rapidly control the negative ion machine, and the negative ion machine is convenient to use. And an inclined switch is arranged in the mechanism, a power source can be automatically turned off in time after the mechanism topples over, negative ions released after toppling over are effectively prevented from influencing the contact face, use safety is improved, a connecting part is arranged at the bottom of the shell, a support can be externally connected, the mechanism can be suitable for multiple use scenes, and use is more convenient.

The invention relates to the technical field of high polymer materials, in particular to a preparation method of a functionalized polylipoic acid material based on a lipoic acid-amine molecular eutectic system. According to the polymer material, lipoic acid is used as a hydrogen bond donor of a eutectic system, amine molecules are used as a hydrogen bond acceptor, ion pairs are formed through interaction of carboxyl and amino, and then a room-temperature eutectic system is constructed; the diffusion performance of LA and the activation state of disulfide bonds are guaranteed in the system, spontaneous ring opening polymerization of LA at room temperature is induced, and finally the functionalized polylipoic acid material is formed. The polymer material is endowed with excellent self-repairing performance and high tissue adhesion performance by utilizing dynamic disulfide bonds and carboxylic acid groups in lipoic acid molecules, and meanwhile, the microstructure of a polymer network is regulated and controlled by virtue of multiple non-covalent interaction between amine molecules and lipoic acid; the multifunctional polylipoic acid material with good biocompatibility, strong tissue adhesion and efficient self-healing performance can be simply and efficiently prepared.

The present invention belongs to the field of polymer materials, and relates to a kind of long and short branched perfluorosulfonic acid resin, proton membrane and its preparation method and application, the resin structure has both long branched perfluorosulfonic acid and short branched perfluorosulfonic acid structural units, and retains the structural advantage of perfluorosulfonic acid resin.The introduction of long branched perfluorosulfonic acid structure can regulate the water absorption rate of resin and membrane, improve dimensional stability; In addition, the cationic group in the structure can effectively improve the dissociation of terminal sulfonic acid group, improve the ionic conductivity of proton membrane, and solve the contradiction between "long side chain" and "low conductivity". The sulfonic acid group in the short branched perfluorosulfonic acid structure can form an acid-base ion pair with the amino group (N) in the long branched perfluorosulfonic acid structure, effectively limiting the strong water absorption of the sulfonic acid group in the proton membrane, and can greatly enhance the mechanical properties of the membrane; In addition, the ion pair formed can also carry out ion conduction, solve the contradiction between "short side chain" and "high swelling".

1. The name of the design product: negative ion air purifier. 2. The use of the design product: a kind of environmental optimization equipment using negative ions to purify, dust, deodorize and sterilize air. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective drawing.

The invention relates to the technical field of batteries, in particular to a negative-electrode-free sodium metal battery, a diaphragm and an electric device. The electrolyte of the negative-electrode-free sodium metal battery comprises the ether solvent, the diaphragm comprises the base membrane and the molecular sieve layer arranged on at least one side of the base membrane, the pore diameter of the molecular sieve is 0.45 nm to 0.55 nm, and the cycle performance of the negative-electrode-free sodium metal battery is improved. According to simulation calculation, the size of an ether solvent molecular ion pair is smaller than the aperture of the molecular sieve, the molecular sieve layer can be speculated to intercept the ether solvent molecular ion pair, and the risk of gas production by reaction of an ether solvent with a low LUMO energy level in the ether solvent molecular ion pair and negative electrode sodium metal is reduced.

The invention provides a cyclosporine bulk drug and a detection method of related substances of oil-in-water emulsion thereof, the method adopts an octadecyl silane bonded silica gel chromatographic column (the front of the column is connected with a stainless steel tube), a mobile phase A is a mixed solution of acetonitrile, a water phase, tert-butyl methyl ether and phosphoric acid in a ratio of 450-480: 490-540: 25-45: 1, and the water phase contains 0.1-0.4% of an ion pair reagent; a mobile phase B is a mixed solution of acetonitrile and 0.2% phosphoric acid water in a ratio of 70: 30-80: 20, and the cyclosporine and five impurities (impurity U, impurity H, impurity dihydroA, impurity D and impurity G) thereof can be distinguished and detected at the same time through specific gradient elution. The method has the advantages of strong specificity, high sensitivity and good repeatability, and can effectively control the content of related substances in the cyclosporine oil-in-water emulsion. The method can be used for detecting the cyclosporine ophthalmic preparation containing the teloxacin and the medium chain triglyceride.

A sensor for gas species in water includes two membranes separating first, second and third chambers. The first and second chambers are separated by an ion exchange membrane, and the second and third chambers are separated by a gas permeable membrane. Water electrolysis in the first and second chambers provides analyte-ions corresponding to an analyte being detected that pass through the ion exchange membrane from the first chamber to the second chamber. Within the second chamber, these analyte-ions generate analyte via the electrolysis. Analyte in the second chamber passes through the gas permeable membrane to arrive at the third chamber. Within the third chamber, the analyte-ion is generated chemically from the analyte. Electrical detection of the analyte-ion in the third chamber provides sensing of the analyte present in the first chamber.

The invention provides an electrochemical sensor and a metal ion detection method thereof, and relates to the technical field of water quality detection. The electrochemical sensor provided by the invention comprises a sensor body, the sensing electrodes are arranged on the surface of the sensor body, and the sensing electrodes comprise a detection electrode, a reference electrode and a hydrogen ion indication electrode; and the ion selective permeable membrane covers the surface of at least one of the detection electrode and the hydrogen ion indication electrode. The corresponding target hydrogen ions or metal ions in the solution are screened through the selective permeable membrane on the sensor body. The pH value of the solution is measured through the hydrogen ion indicating electrode, and the concentration of the measured ions is calibrated through the hydrogen ion indicating electrode, so that the interference of the pH value of the solution on the measurement is reduced. The concentration of the metal ions is detected through the detection electrode, and the concentration of the detected ions is calibrated, so that the interference of interference ions on the detected ions is reduced, and the accuracy and the stability of the test are improved.

The application discloses a kind of covalent organic framework material for xenon gas nitrogen separation and its preparation method and application, select the high affinity of metal ions to phenanthroline, and prepare two-dimensional and three-dimensional covalent organic framework with it as monomer respectively;Periodically arranged phenanthroline covalent organic framework structural unit can provide a large number of adsorption sites for metal ions, at the same time, using the strong adsorption of metal ions to Xe, introduce metal ions as accessible polar sites on the surface of covalent organic framework pore, enhance its ability to induce Xe polarization, improve its adsorption separation efficiency;The material prepared by the application has good xenon gas nitrogen separation performance, after adsorbing nickel ions, the xenon adsorption capacity of covalent organic framework is increased by 2.24 times, the xenon adsorption capacity can reach 8.7 cm 3 / g under the condition of 298 K, 1 bar, and IAST selectivity can reach 3.8.The organic covalent framework gas separation performance presented by the application is good, and it has important significance for high-performance xenon gas nitrogen separation.

The invention relates to a bisoprolol long-acting transdermal absorption patch, and belongs to the technical field of medicines. The percutaneous absorption patch disclosed by the invention is suitable for being applied for three days, and consists of a backing layer, a medicine-carrying pressure-sensitive adhesive layer and an anti-sticking layer. The drug-loading pressure-sensitive adhesive layer comprises a bisoprolol organic acid ion pair compound, a pressure-sensitive adhesive and a percutaneous absorption enhancer. Wherein the weight of the bisoprolol organic acid ion pair compound accounts for 5-45wt% of the total weight of the medicine-carrying pressure-sensitive adhesive layer, the weight of the pressure-sensitive adhesive accounts for 50-90wt% of the total weight of the pressure-sensitive adhesive layer, and the dosage of the percutaneous absorption enhancer accounts for 1-20wt% of the total weight of the pressure-sensitive adhesive layer. Wherein in the bisoprolol organic acid ion pair compound, the molar ratio of bisoprolol free alkali to different organic acids is (0.5: 1)-(2: 1). The patch is simple in preparation technology and low in cost, realizes constant-speed drug release, provides a continuous treatment effect of at least three days, and is beneficial to control of symptoms and disease progression; and the method is safe, effective, good in stability and convenient to use.