26 results about "Ion strength" patented technology

The invention relates to the technical field of adsorption detection, and discloses an imidazolium resin adsorption kinetic parameter online identification method and system.The method comprises the steps that 1, flow, inlet and outlet water concentration, conductivity, temperature and pH value are synchronously collected, and apparent ion strength is obtained through the conductivity; step 2, performing mass balance based on the flow, the inlet and outlet water concentration and the resin dry basis mass to obtain a real-time track of the average adsorption capacity of the resin; step 3, constructing counter-ion coupling isothermal driving force and screening a quasi-balance section; 4, solving isothermal coupling parameters by combining a quasi-balance relational expression; 5, calculating an overall mass transfer coefficient point by point; step 6, simultaneously solving an outer membrane mass transfer proportionality coefficient and an in-hole mass transfer coefficient under two levels of flow; and step 7, constructing a core parameter group and outputting a consistency judgment result identifier. According to the method, online identification and consistency judgment of the adsorption thermodynamic parameters and the mass transfer kinetic parameters of the imidazolium resin are realized.

The application belongs to the technical field of irradiation effect of nuclear fuel and material, and particularly relates to a fissile nuclide Zr quantitative analysis method based on SIMS. 90 Zr + Ion implantation, coating treatment of the surface of the CeO2 sample after ion implantation, optimization adjustment of SIMS analysis parameters, depth profiling and concentration calibration of fissile nuclide Zr in the CeO2 sample. 90 The method can quickly test and obtain the concentration distribution of fissile nuclide Zr in the depth direction of the CeO2 simulation fuel, the relative sensitivity factor and the detection limit. 90 The method can be used for the characterization analysis of fissile nuclide Zr in the irradiated nuclear fuel, and the obtained relative sensitivity factor of fissile nuclide Zr can be used for the concentration calibration of the secondary ion intensity of fissile nuclide Zr in the irradiated nuclear fuel at different radial positions along with the depth change curve, so as to obtain the concentration distribution of fissile nuclide Zr along the radial direction in the irradiated nuclear fuel. 90 The method can be used for the characterization analysis of fissile nuclide Zr in the irradiated nuclear fuel, and the obtained relative sensitivity factor of fissile nuclide Zr can be used for the concentration calibration of the secondary ion intensity of fissile nuclide Zr in the irradiated nuclear fuel at different radial positions along with the depth change curve, so as to obtain the concentration distribution of fissile nuclide Zr along the radial direction in the irradiated nuclear fuel. 90 The method can be used for the characterization analysis of fissile nuclide Zr in the irradiated nuclear fuel, and the obtained relative sensitivity factor of fissile nuclide Zr can be used for the concentration calibration of the secondary ion intensity of fissile nuclide Zr in the irradiated nuclear fuel at different radial positions along with the depth change curve, so as to obtain the concentration distribution of fissile nuclide Zr along the radial direction in the irradiated nuclear fuel.

The main purpose of the present disclosure is to provide a sulfide solid electrolyte capable of suppressing an increase in battery resistance associated with a charge / discharge cycle. In the present disclosure, the above-described problem is solved by providing a sulfide solid electrolyte containing Li element, P element, and S element, the ratio (CX / CT) of the total (CX) of the ion strengths of PO3 +, SO42-, and PSO + to the total (CT) of all ion strengths in TOF-SIMS analysis being 0 or more and less than 9.10 * 10 <-3 >.

The invention discloses an in-source cracking controllable pulse direct-current arc induced nano-liter electrospray ionization source and mass spectrum combined system and a detection method. The system comprises a mass spectrum, a quartz capillary tube, a metal coil, a positive wire, a negative wire and a direct-current arc generator. The high charge density characteristic of pulse direct-current arc plasma and the solution polarization effect induced by a metal coil are combined to construct a dual-drive ionization system. Under low voltage, molecular ion integrity is maintained; under high voltage, the characteristic fragment ion strength is obviously enhanced, the compound structure information can be obtained without depending on tandem mass spectrometry, and the problems of time consumption and sample consumption of nanoliter electrospray ionization source analysis are effectively solved. The pulse direct-current arc provides high-density positive and negative charges, the metal coil strengthens directional migration of charged species to the tip of the capillary tube through potential difference, and ionization stability and efficiency are remarkably improved.

To provide an optimal method for recovering a polyester-based support, including removing and recovering the coating layer from a polyester film having at least one coating layer. [Solution] Using a polyester film having a polyester support and at least one coating layer, the depth profile of the polyester film was measured by time-of-flight secondary ion mass spectrometry, and Si2HO5 was detected at a position 1 nm deep from the surface of the coating layer. - Ionic strength of 0.1 or higher, Si2CH3O4 - A method for recovering a polyester support by treating the polyester film with an alkaline treatment solution and then performing a water-washing and peeling procedure, with the ion strength set to 0.5 or higher. (The ion strength in the depth profile is determined by the ions (C) derived from the polyester of the base material.) 10 H7O4 - (Normalized by setting the average ionic intensity in the region where the intensity is constant to 1.)

The invention provides a reference electrode for a potentiometric measurement system for measuring an analyte in a body fluid sample, comprising an Ag / AgCl conductor element (8) in contact with a reference electrolyte (7) wherein the chloride ion (Cl-) concentration in the reference electrolyte (7) is between 50 mmol / L and 200 mmol / L, and wherein the sodium ion (Na +) concentration in the reference electrolyte (7) is preferably between 70 mmol / L and 270 mmol / L, and wherein the Ag / AgCl conductor element (8) is in contact with the reference electrolyte (7). And wherein the ionic strength of the reference electrolyte (7) is between 75 mmol / L and 300 mmol / L. The invention also provides a potentiometric measurement system and a method for potentiometric measurement of an analyte in a body fluid sample.

The invention discloses an HY catching agent as well as a preparation method and application thereof, and belongs to the technical field of acid waste liquid regeneration. The HY trapping agent comprises the following components in percentage by mass: 0.08%-2.00% of a pH buffer agent, 5.0%-12.0% of an adsorbent, 0.01%-0.08% of an ionic strength regulator, 0.03%-0.10% of an acid radical supplement, 0.01%-0.03% of a chelating agent, 0.05%-0.2% of sulfamate and a proper amount of deionized water. The heavy metal removal rate is larger than or equal to 99%, the acid radical retention rate is larger than or equal to 95%, and the treatment cost is reduced.

A toner which has a toner particle and silica fine particle A on a surface of the toner particle, wherein a weight average particle diameter of the toner is 4.0 to 15.0 μm, a carbon loss ratio when the silica fine particle A is washed with hexane is 5 to 70%, and a temperature at which a differential coefficient of a nine-point moving average of integrated values integrated from 35° C. reaches 4000 or more for an intensity of an obtained ion having a mass number (M / z) of 207 is 270° C. or higher, when mass spectrometry is carried out at a sampling interval of 0.4 seconds while heating the silica fine particle A under specific conditions.

A system for detecting target molecules includes a sample well defining a sensing region and two electrode regions, a sensor positioned in the sensing region and sensitized to the target molecules, an electrode positioned in each electrode region and configured to expose the sensor to a frequency-modulated electric field, and a detector configured to detect both an amplitude of oscillation of the sensor at a frequency of the modulated electric field and a direction of a displacement of the sensor. The sensing region defines a channel between the electrodes, and a ratio of a current density at a center of the sensing region to a current density at one of the electrodes is at least 2. The system allows detection of target molecules in a normal ionic strength buffer (e.g., having an ionic strength in a range of about 10 mM to about 1 M).

The present invention relates to the measurement of ionic strength using closed loop electrochemical pH regulation. A method for monitoring changes in ionic strength in a sample solution by means of a closed loop device is provided, which provides for continuous electrochemical pH regulation cycles between predetermined pH values. In particular, changes in ionic strength can be induced by chemical reactions and can eventually change the electrical control parameters of the closed loop device. By measuring these electrical control parameters, the extent and progress of the respective chemical reactions can be monitored.

The invention relates to the technical field of material surface analysis, and provides a secondary ion mass spectrometry curve data component analysis method based on depth adaptation, which comprises the following steps: S100, importing at least two SIMS curves, and obtaining a depth value d and an RSF parameter of each SIMS curve, and an ion strength value I corresponding to the depth value d; s200, acquiring a depth boundary of each SIMS curve, and determining a global depth boundary; s300, each SIMS curve is expanded to have the same global depth boundary; s400, for any target depth point on the target SIMS curve, acquiring an ion strength value corresponding to the target depth point; and S500, calculating the component concentration corresponding to each depth value of the target SIMS curve by using a concentration formula. The method provided by the invention is not limited by scenes, and component concentration calculation can be carried out on curves which do not have the same depth range and do not have the same sampling interval. Meanwhile, for curves in different depth ranges, the curves do not need to be cut off to the shortest range, all information of the curves can be effectively utilized, and the more complete element component concentration can be obtained.

The invention relates to a mass spectrum technology, and particularly provides a method for reducing mass discrimination of a micro-channel plate, which comprises the following steps: A1, ions are ejected by an electric field of a third electrode, pass through a first electrode and a second electrode after passing through a field-free region, and are received by the micro-channel plate to obtain ion flight time information of a mass section; a2, the flight time t and the ion strength St of the selected mass-to-charge ratio ions are obtained; a3, at the flight time t, pulse voltage U is applied to the second electrode, and the energy X of ions incident to the micro-channel plate and the corresponding ion strength S output by the micro-channel plate are obtained; a4, adjusting the pulse voltage, returning to the step A3 to obtain multiple groups of data pairs (Si, Xi), i = 1, 2... N; a5, the mapping relation S = f (X) between the data pairs (Si, Xi) is obtained through the data pairs (Si, Xi); and A6, obtaining a pulse voltage value corresponding to the ions by using the mapping relation. The method has the advantages of prolonging the service life of the detector and the like.

In one aspect, a mass calibration method for use in mass spectrometry is disclosed, which includes generating a plurality of mass spectra corresponding to at least two calibrant ions having different m / z ratios for a plurality of different intensities of said at least two calibrant ions, using the mass spectra to determine an m / z ratio for each of said calibrant ions and for each of said ion intensities. For each of said calibrant ions and each of said ion intensities, a shift of said determined m / z ratio is determined relative to the m / z ratio of that calibrant ion and the m / z shifts are used to generate an intensity-dependent correction factor for correcting a measured m / z ratio of a target ion associated with an analyte in a sample.

The present application relates to the field of adsorption detection technology, and discloses an online identification method and system for imidazolium resin adsorption kinetics parameters, comprising: step 1, synchronously collecting flow, inlet and outlet water concentration, conductivity, temperature and pH, and obtaining apparent ionic strength from conductivity; step 2, performing mass balance based on flow, inlet and outlet water concentration and resin dry base mass to obtain real-time trajectory of average adsorption amount of resin; step 3, constructing counter-ion coupled isotherm driving force and screening quasi-equilibrium section; step 4, solving isotherm coupled parameters by simultaneously solving quasi-equilibrium relationship; step 5, point-by-point calculating overall mass transfer coefficient; step 6, simultaneously solving outer membrane mass transfer proportion coefficient and pore mass transfer coefficient under two flow rates; and step 7, constructing core parameter group and outputting consistency judgment result identifier. The present application realizes online identification and consistency judgment of imidazolium resin adsorption thermodynamic parameters and mass transfer kinetic parameters.

The invention relates to a laminated film and a method for manufacturing the laminated film. This laminated film (1) is provided with: a base film (2); a cured resin layer (3) disposed on one surface in the thickness direction of the base film (2); and an inorganic material layer (4) disposed on one surface in the thickness direction of the cured resin layer (3). On one surface of the cured resin layer (3) in the thickness direction, the ratio of the ionic strength of HSi2O5-fragments to the ionic strength of C3H3O2-fragments as measured by time-of-flight secondary ion mass spectrometry is 1.0 * 10 <-1 > or more. In addition, the total reflectance of light irradiated by a standard light source D65 at a wavelength of 380 nm to 780 nm to the laminated film (1) from one side in the thickness direction of the inorganic material layer (4) is 0.40% or less.

The invention relates to the technical field of CO2 capture, and discloses a CO2 load calculation and prediction method of an amino absorbent, which comprises the following steps: constructing an amino absorbent and CO2 reaction thermodynamic model, comprising equilibrium constant expressions of all possible chemical reactions, equilibrium constants under standard temperature and pressure, a Van der Hough equation, a solution ion strength calculation formula, an H + activity coefficient calculation formula, a pH value calculation formula under an equilibrium state and a CO2 load calculation formula. The method comprises the following steps: acquiring initial parameters of an amino absorbent solution in a carbon capture system, inputting the initial parameters into a thermodynamic model, iteratively solving the change trend of the pH along with the CO2 load in the CO2 absorption process of the absorbent through an equation set, and substituting the change trend into the to-be-measured pH to obtain the CO2 load of a target amino absorbent under the to-be-measured pH. With the adoption of the method, the CO2 load can be accurately and quickly obtained only by arranging a pH probe in the carbon capture system without sampling or using dangerous chemicals, so that the method has relatively high safety and convenience, and operation errors are not easy to occur.

The application provides a gold nanoparticle with enhanced stability and a preparation method and application thereof, and belongs to the technical field of gold nanoparticles. The gold nanoparticle with enhanced stability provided by the application is modified on the surface with a hairpin DNA; the nucleotide sequence of the hairpin DNA is shown as SEQ ID NO. 1. The gold nanoparticle of the application is modified by the hairpin DNA, and the stability is significantly improved, specifically including tolerance to a strong acid environment, stable existence in an environment with a pH of 2 or more, and a substantial improvement in salt tolerance, tolerance to 100 mM Mg 2+ of the above ion strength.

Reported herein is a method for determining the presence of an anti-drug antibody in a sample, comprising the steps of incubating the sample with MgCl2 at a final concentration ranging from 1N to 12N; adding a tracer antibody and then incubating the sample; incubating the isolated tracer antibody-anti-drug antibody complex with a detection antibody conjugated to a detectable label; and determining the presence of the anti-drug antibody if a signal above a threshold level is obtained. TIFF2023524561000009.tif82170

A system for detecting target molecules includes a sample well defining a sensing region and two electrode regions, a sensor positioned in the sensing region and sensitized to the target molecules, an electrode positioned in each electrode region and configured to expose the sensor to a frequency-modulated electric field, and a detector configured to detect both an amplitude of oscillation of the sensor at a frequency of the modulated electric field and a direction of a displacement of the sensor. The sensing region defines a channel between the electrodes, and a ratio of a current density at a center of the sensing region to a current density at one of the electrodes is at least 2. The system allows detection of target molecules in a normal ionic strength buffer (e.g., having an ionic strength in a range of about 10 mM to about 1 M).

The invention belongs to the technical field of irradiation effects of nuclear fuels and materials, and particularly relates to a fission nuclide Zr quantitative analysis method based on SIMS. Comprising the following steps: fission nuclide 90Zr < + > ion implantation on the surface of a CeO2 sample, coating treatment on the surface of the CeO2 sample after ion implantation, optimal adjustment of SIMS analysis parameters, and depth analysis and concentration calibration of the fission nuclide 90Zr in the CeO2 sample. According to the method, the concentration distribution, the relative sensitivity factor and the detection limit of the fission nuclide 90Zr in the depth direction of the CeO2 simulated fuel can be rapidly tested and obtained; the method can be used for characterization analysis of the fission nuclide Zr in the irradiated nuclear fuel, and concentration calibration is carried out on a change curve of the secondary ion strength of the fission nuclide Zr at different radial positions of the irradiated nuclear fuel along with the depth in combination with the obtained relative sensitivity factor of 90Zr, so that the radial concentration distribution of the fission nuclide 90Zr in the irradiated nuclear fuel is obtained.

A method of controlling an ion detection device is provided. The method comprises: converting received ions into emitted electrons, multiplying the emitted electrons, detecting the multiplied electrons, producing a detection signal in response, and determining an ion intensity from the detection signal.

This solid electrolyte contains elemental lithium (Li), elemental phosphorus (P), elemental sulfur (S), elemental oxygen (O), and elemental halogen (X). SO- fragment ions are observed in the solid electrolyte by time-of-flight secondary ion mass spectrometry. The value of Ib / Ia, which is the ratio of the intensity Ib of SO- fragment ions to the intensity Ia of PS2 - fragment ions, is more than 2.8×10-2 and less than 1.1×10-1. The value of Ic / Ia, which is the ratio of the intensity Ic of LiO- fragment ions to the intensity Ia of PS2 - fragment ions, is preferably more than 6.5×10-4 and less than 4.2×10-3.

A sensing platform for continuous water resource monitoring by electrochemical detection and solution parameter correction is provided. The sensing platform employs a solid-state electrolyte three-electrode cell, creating a high ionic strength environment within the solid-state electrolyte membrane, which is in ion exchange equilibria with the sampled solution. This device may be used as a standalone sensor in environments where the water parameters (pH temperature, and ionic strength) are controlled, or in concert with compensation sensors where water parameters are not controlled.

A method of calibrating a mass spectrometer is disclosed, the mass spectrometer comprising at least one ion detector of a first type having a first ion intensity measurement range (IDR1) and at least one ion detector of a second type having a second ion intensity measurement range (IDR2). The first ion intensity measurement range and the second ion intensity measurement range share an overlap range (IDR0). The method can comprise: - detecting a washing period (WP); - during and / or after the washing period, measuring an ion intensity with both the at least one ion detector of the first type and the at least one ion detector of the second type to generate a first measured ion intensity and a second measured ion intensity, respectively; and - determining a detector calibration factor using the first measured ion intensity and the second measured ion intensity.

The invention provides a simulation method and system for nitrogen migration of a saturated water layer of a snow-soil interface, and belongs to the technical field of frozen soil hydrology and non-point source pollution simulation. The method comprises the following steps: firstly, constructing a microscopic adsorption model based on a double-electrode-layer compression theory, analyzing the influence of ion strength on the surface potential and Debye length of soil colloid by solving a Poisson-Boltzmann equation, and establishing a dynamic correction function of a desorption rate constant; secondly, constructing a complete mixing reactor coupled with non-constant flow and a modified reversible first-order dynamic macroscopic migration model, establishing an equation set in parallel, describing the convective transportation and mixing process of solute in the variable-volume water body, and dynamically selecting a solving strategy by introducing a quasi-steady-state approximation discrimination mechanism; the non-equilibrium migration process and the extraction efficiency of the nitrogen in the saturated water layer are obtained. According to the invention, a superposition driving mechanism of an ionic strength effect and a flow velocity pulse effect on nitrogen loss in a snow melting period is effectively disclosed, and the precision of simulating snow melting non-point source pollution in the cold region is remarkably improved.

The present invention provides a flow-gate design that utilizes chemo-responsive colloidal particles to control the flow rate therethrough. The flow-gate operates by changing the compactness of the colloidal particles, which changes in response to changes in pH or ionic strength in the flow medium or the surrounding environment. The design also allows the flow-gate as a size-discriminating filter. The ability to control the flow rate in response to changes in the flow medium or the environment makes the presently provided flow-gate useful for a variety of applications, including those that require automatic control of the flow rate, and automatic irrigation.