81 results about "Linear range" patented technology

The invention relates to the technical field of vacuum measurement, in particular to a device for expanding the linear range of mass spectrometry measurement, which comprises a gas transmission pipeline, an electromagnetic valve, a small hole and a mass spectrometer, and is characterized in that the front end of the gas transmission pipeline is used for allowing a sample to be measured to enter, and the rear end of the gas transmission pipeline is connected with the mass spectrometer; the middle part of the gas transmission pipeline is divided into three channels, namely a first gas transmission pipeline, a second gas transmission pipeline and a third gas transmission pipeline; the first electromagnetic valve and the first small hole are sequentially arranged on the first gas transmission pipeline, the second electromagnetic valve and the second small hole are sequentially arranged on the second gas transmission pipeline, and the third electromagnetic valve and the third small hole are sequentially arranged on the third gas transmission pipeline. According to the method, manual dilution or segmented sample injection is not needed, a wide concentration range can be covered by single analysis, more than 60% of time cost is saved, and measurement in a dynamic range of 106 is realized.

The invention discloses a flexible piezoresistive sensor and a preparation method and application thereof, the flexible piezoresistive sensor comprises an upper layer flexible conductive member, the upper layer flexible conductive member comprises an upper layer flexible substrate and an upper layer conductive layer, one surface of the upper layer flexible substrate is provided with a microstructure formed by sand paper reverse molding, and the upper layer conductive layer is embedded in the surface of the microstructure; the lower-layer flexible conductive member comprises a lower-layer flexible substrate, a lower-layer conductive layer and an elastic conductive layer; the lower-layer flexible substrate is provided with an arc-shaped stripe array microstructure; the elastic conductive layer includes a polymer matrix and a conductive filler dispersed therein. Through the double-gradient design of the gradient conductivity and the gradient structure, the core contradiction that a traditional flexible piezoresistive sensor is difficult to consider high sensitivity and wide linear range at the same time is successfully solved by utilizing the deep coupling and synergistic effect of the conductivity gradient and the structure gradient, and synchronous improvement of the sensitivity and the linear range is realized.

The invention discloses an underwater CSK-OFDM modulation and detection method based on LED linear constraint, and the method comprises the steps: enabling a transmitter to map a data bit stream of a constellation diagram into a complex symbol stream, converting the complex symbol stream into a real number time domain sequence through an ACO-OFDM module, carrying out the LED amplitude limiting of the time domain sequence, and obtaining a time domain clipping sequence; transmitting the time domain clipping sequence in a UOWC channel through a corresponding LED, introducing symbol timing deviation and amplitude limiting noise into a frequency domain by a receiver, and processing the time domain clipping sequence by using an ACO-OFDM module again to obtain a received signal; under the maximum expectation framework, the probability from each alternative constellation diagram is calculated, symbol timing deviation and additive white Gaussian noise variance are estimated, a globally optimal solution is obtained, and a constellation diagram recognition result is output through maximum likelihood demodulation. According to the method, the linear range constraint of the LED and the complex environment under the UOWC scene are comprehensively considered.

The invention relates to a protective circuit (1) for a device or power circuit breaker comprising, • an active controllable component (B1) which can be controlled in a linear range, • at least one measuring device (S P , S U , S i , S Uin , S Uout ) to determine a power output that is implemented in the actively controllable component (B1), • a processing unit (uC), • where an energy equivalent can be determined based on the specified power and a time between two measurements, • where time-separated energy equivalents are combined by the processing unit (uC), • where at least two time-related limit values ​​(G t1 , G t2 , ... G tn ) are planned, • where, upon reaching and / or exceeding a limit value (G t1 , G t2 , ... G tn) by an energy equivalent or the combined energy equivalents in a limit value (G t1 , G t2 , ... G tn ) assigned time the active controllable component (B1) is controlled by the processing unit (uC) in such a way that the current flow through. Furthermore, the invention relates to a method.

This invention discloses a method and application for constructing a dual-mode sensor for detecting diphenyl phosphate using smartphone-assisted surface molecular imprinting, belonging to the fields of biochemical analysis, functional nanomaterials, and life science technology. In the synthesis process, the solubility, selectivity, and photoinitiation efficiency of the target analyte during polymerization are optimized, and molecularly imprinted nanozymes (MIPs) for diphenyl phosphate are rapidly prepared using molecular imprinting technology. In the detection process, the peroxidase-like activity of Fe,N-CDs catalyzes the colorimetric reaction between H₂O₂ and 3,3,5,5-tetramethylbenzidine (TMB), and the internal filtering effect of oxTMB suppresses the fluorescence signal. Combined with a smartphone, dual-signal cross-validation is achieved, constructing a colorimetric-fluorescence sensor for detecting diphenyl phosphate. This sensor exhibits specific recognition selectivity and binding affinity for diphenyl phosphate, is simple to operate, and low in cost. It can achieve sensitive detection of diphenyl phosphate over a wide linear range, with a detection limit as low as 16 pg / mL, making it suitable for on-site analysis of trace DPH in complex aquatic environments.

The invention provides a method for detecting the content of zinc in a lithium-zinc binary alloy strip based on ICP-OES, and belongs to the technical field of metal material component analysis. According to the method, the lithium matrix is separated by adopting a nitric acid-perchloric acid digestion system, and the stock solution is diluted by 500 times, so that the concentration of the lithium matrix can be efficiently reduced, meanwhile, the signal inhibition effect is effectively eliminated by combining lithium salt matching, and the detection precision is greatly improved. According to the method, Zn 213.856 nm analysis spectral lines are carefully selected, RF power is optimized, spectral interference of other elements can be avoided, the linear range can be expanded, and the method is suitable for rapid determination of the zinc content of 1%-20%. According to the method, the detection limit can reach 0.01%, the relative standard deviation is smaller than or equal to 1.0%, the recovery rate is 98.5%-101.2%, and high-precision detection is achieved.

This invention provides a method for fabricating a tactile sensing unit capable of independently adjusting sensitivity and linear range, belonging to the fields of flexible wearables, tactile sensing, and human-computer interaction. The method includes the following steps: S1, determining the structure of the tactile sensing unit; S2, establishing a correlation model between the structural parameters of the bi-phase constrained elastomer and the range and sensitivity of the sensing unit; S3, based on the target linear range and target sensitivity, obtaining the structural parameters of the high-stiffness outer ring and the negative Poisson's ratio inner ring through the correlation model; S4, fabricating the bi-phase constrained elastomer according to the structural parameters of the high-stiffness outer ring and the negative Poisson's ratio inner ring, and assembling and packaging it. This invention achieves synergistic optimization of wide linear range and high sensitivity through the bi-phase constrained elastomer structure, and supports reverse design with calculable parameters, manufacturable structure, and integrable functions based on target performance indicators.

The invention relates to a method for determining the total amount of impurity elements in a natural high-purity quartz mineral, which comprises the following steps of: preparing a laser sheet of the quartz mineral, observing and photographing by using a polarizing microscope, designing an analysis test point on a picture, and carrying out point-by-point analysis and determination on a laser ablation and inductively coupled plasma spectrum according to the design point. Accurate determination of impurity elements of quartz minerals in a natural high-purity quartz raw material is realized, comprehensive analysis and evaluation are carried out, and grade characteristics of the quartz minerals in the high-purity quartz raw material are further determined. The method is suitable for analysis and determination of impurity elements in natural quartz minerals, has the advantages of low detection limit, high sensitivity, wide linear range and the like, can be applied to effective and rapid evaluation, quality monitoring and the like of high-purity quartz raw materials, and provides quartz mineral raw materials with stable grades for the high-purity quartz sand industry.

The invention discloses an analog signal range judgment and switching system with calibration and self-diagnosis functions, which relates to the technical field of analog signal monitoring and comprises an analog signal acquisition module, an analog signal range analysis module, an analog signal range switching module and a database, the method comprises the following steps: firstly, analyzing the influence of different environment temperature intervals on the optimal linear interval of the ADC to obtain the optimal linear interval of the ADC in the different environment temperature intervals, determining the optimal linear interval of the ADC according to the current environment temperature, and judging whether an analog signal falls into the optimal linear interval of the ADC and whether the current range gear loses efficacy; and then the target range gear is obtained by analyzing the influence among the range gears under different gear working conditions, and the current gear is switched to the target range gear, so that the effectiveness of range analysis and the precision of ADC sampling are guaranteed, and the rationality of range switching is also guaranteed.

The invention relates to a fluorescence and colorimetric dual-mode biosensing method for detecting caffeine and application thereof, the method causes CRISPR / Cas13a to regulate and control Fe-MOFs to fall off from a signal probe based on to-be-detected liquids with different concentration gradients, the fallen Fe-MOFs collapses under the action of sodium pyrophosphate to release 2-aminoterephthalic acid and ferric ions, and the 2-aminoterephthalic acid and ferric ions are subjected to fluorescence and colorimetric dual-mode biosensing method is used for detecting caffeine. 2-aminoterephthalic acid is converted into a fluorescence signal, meanwhile, Prussian blue generated by reaction of ferric ions and potassium ferrocyanide is converted into a colorimetric signal, and a fluorescence and colorimetric dual-mode biosensing method is constructed; according to the sensor, interference factors can be effectively eliminated by outputting two detection signals and performing cross validation; the advantages of high sensitivity and wide linear range of a fluorescence method and the advantages of simple operation and visual result of a colorimetric method are combined, so that a target object can be accurately recognized, the lower detection limit can be reduced, and the accuracy of a quantitative result can be ensured; according to the sensing method, visual observation can be achieved, precise instruments are not needed, and good application value is achieved.

A magnetoresistive sensor with harmonically broadened linear range comprises a substrate (100) and a multiple push-pull magnetoresistive sensing bridge arms. The push arms (91) of the sensing bridge comprise N types of push magnetoresistive sensing units (94). The pull arms (92) comprise N types of pull magnetoresistive sensing units. Key characteristic parameters of each magnetoresistive sensing unit comprise R0i, MRi, Hsi, ±αpi and ai. The Key characteristic parameters of the push magnetoresistive sensing units (94) and corresponding pull magnetoresistive sensing units are different from the key characteristic parameters of standard magnetoresistive sensing unit of a standard push-pull linear magnetoresistive sensor. There is at least one set of key characteristic parameters [(R0j, MRj, Hsj, ±αpj), aj]. Linear parts and nonlinear harmonic parts of R-H characteristic parameters that characterize the push magnetoresistive sensing units and the pull magnetoresistive sensing units are superimposed, so that the linear range of the multiple push-push magnetoresistive sensing bridge is greater than the linear range of the standard push-pull linear magnetoresistive sensor.

The present invention belongs to the technical field of biomedical detection and in-vitro diagnosis. Disclosed are a colorimetric-fluorescent dual-mode nanoprobe and microfluidic chip for detecting cMyBP-C. In the present invention, a colorimetric-fluorescent dual-mode nanoprobe, which comprises UCNPs as a core and MOF as a shell and is loaded with horseradish peroxidase and a labeled antibody, is prepared by means of a "layer-by-layer self-assembly" technique; and then a microfluidic chip is prepared on the basis of the nanoprobe. The microfluidic chip realizes dual-mode detection of colorimetric and fluorescent signals of cMyBP-C, thereby solving technical problems such as limited sensitivity, susceptibility to background interference, limited linear range, photobleaching and signal instability in single-signal detection.

The embodiment of the invention provides a high-gain broadband low-noise amplifier with a high linear range. The circuit is applied to the radio frequency integrated circuit technology and comprises a first-stage amplification circuit, a second-stage amplification circuit and a matching network, and the first-stage amplification circuit and the second-stage amplification circuit are connected through the matching network; the first-stage amplification circuit adopts a cascode structure formed by a single tube and is used for performing first-stage amplification on an input signal; the second-stage amplification circuit adopts a cascode structure formed by composite tubes and is used for performing second-stage amplification on the input signal; and the matching network is used for receiving an output signal of the first-stage amplifying circuit and inputting the output signal of the first-stage amplifying circuit into the second-stage amplifying circuit. The design meets the requirements of high gain, low noise and high linearity.

One aspect provides a dual-scale counter circuit that includes a counter logic unit for storing the current counter value, a range determination logic unit for determining the operating range of the dual-scale counter circuit based on the current counter value and a predetermined threshold, and a counter increment logic unit. The counter increment logic unit is used to linearly increment the current counter value for an increment event in response to the dual-scale counter circuit operating in a linear range, and to probabilistically increment the current counter value for the increment event in response to the dual-scale counter circuit operating in a probabilistic range.The dual-scale counter circuit also includes a linear feedback shift register for generating a random binary bit sequence, on the basis of which the counter increment logic unit is to determine whether the current counter value should be increased for the increment event when the dual-scale counter circuit is operating in the probabilistic range.

This invention provides a method for preparing and applying a LIG molecularly imprinted electrochemical sensor based on the synergistic enhancement of hydrophobic comonomers N-MCz-PABA and AuNPs. Using LIG as the substrate electrode, the invention copolymerizes the hydrophobic monomer N-MCz, the electropolymerizable monomer PABA, and AuNPs precursors onto the electrode surface via a one-step electropolymerization method, forming an N-MCz-PABA@Au molecularly imprinted composite film with both high-affinity recognition sites and high conductivity. This sensor utilizes the enhanced hydrophobic interaction provided by N-MCz to dominate the specific recognition of cortisol, and leverages the in-situ embedded AuNPs to improve interfacial electronic conductivity, combined with the exogenous redox probe K3[Fe(CN)6] to achieve signal transduction. Its detection linear range for cortisol is 0.01–100 μM, with a detection limit of 4.6 nM. This invention features a simple preparation process, low cost, high sensitivity, and good selectivity, providing an effective platform for the immediate and rapid detection of hydrophobic small molecules in complex biological matrices such as sweat.

The invention provides a photoelectrochemical sensing detection module and system and application thereof. The detection module comprises an electrolytic tank with an upper opening and a lower opening, a working electrode, a counter electrode, a light source and a packaging structure, the working electrode and the electrolytic tank are hermetically connected to form a cavity; at least part of the counter electrode is arranged in the cavity; the light source provides exciting light for the surface of the working electrode; the packaging structure fixedly connects all the components into an integrated structure, and a light path between the light source and the working electrode is fixed. The module is compact in structure, easy and convenient to operate and portable, light path deviation is avoided through fixed packaging of the light source, the cavity stability is guaranteed through the sealing ring, and the module is low in signal background noise, high in signal-to-noise ratio and good in result reproducibility in the detection process; the photoelectrochemical sensing detection system is matched with the specific molecularly imprinted material layer, high-performance detection of bisphenol A is achieved, the linear range reaches 0.1 microgram L <-1 > to 500 microgram L <-1 >, and the detection limit is as low as 0.1 microgram L <-1 >.

This invention belongs to the field of electrochemiluminescence and provides an electrochemiluminescence aptamer sensor for the detection of isobutyryl fentanyl (IBF), its preparation, and its application. An apt@Ni-MOFs / cDNA / Ag-MOGs / SiO2 electrode with electroluminescence and specific recognition properties is modified onto the surface of a glassy carbon electrode (GCE) to form the modified electrode apt@Ni-MOFs / cDNA / Ag-MOGs / SiO2 / GCE. This modified electrode is used as the working electrode, an Ag / AgCl electrode as the reference electrode, and a platinum electrode as the counter electrode. IBF was detected by electrochemiluminescence in a PBS buffer solution containing 0.15 mol / L K2S2O8 at pH 7.4, and the corresponding regression equation was obtained; ΔECL = 2.4 × 10⁻⁶. 4 + 1.6×10 3 ×log C (g / L), correlation coefficient R 2 =0.999, detection limit is 3.3 × 10 –15 g / L. This invention exhibits good selectivity, high sensitivity, and a wide linear range.

The invention discloses a sensor, a manufacturing method thereof and a real-time braille-to-voice recognition system, and the sensor comprises a double-gradient pore structure conductive film which is formed by the electrostatic spinning of a thermoplastic polyurethane elastomer and the treatment of an ultrasonic multi-walled carbon nanotube and a polydimethylsiloxane solution; the polyimide film is of a double-layer structure, and the conductive film of the double-gradient pore structure is located in the double-layer structure of the polyimide film so as to protect the conductive film of the double-gradient pore structure; and the interdigital electrode is in direct contact with the conductive film with the double-gradient pore structure, and the interdigital electrode is located in the double-layer structure of the polyimide film so as to protect the interdigital electrode. The sensor has the advantages of high sensitivity and large linear range, and can realize high-accuracy real-time Braille-to-voice conversion after being applied to a real-time Braille-to-voice recognition system.

The invention discloses a method for detecting the content of trace metal elements in electronic-grade potassium hydroxide, and belongs to the technical field of electronic chemical detection. The detection method comprises the following steps: diluting an electronic-grade potassium hydroxide sample, and detecting the contents of 27 trace metal elements in the electronic-grade potassium hydroxide by adopting a standard addition method and combining an octupole collision / reaction tank technology with an inductively coupled plasma mass spectrometer. The method has the advantages of simplicity and convenience in operation, high sensitivity, high accuracy, wide linear range, strong anti-interference capability and the like, can effectively detect the content of trace metal ions in the electronic-grade potassium hydroxide, and provides powerful technical support for quality control of the electronic-grade potassium hydroxide.

This invention relates to key structures and methods of operating key structures. In some embodiments, the key structure includes: a housing; an extended plunger configured to be pressed and moved along a linear range of motion; a mechanical transmission including an input and an output; a rotating element, wherein the plunger is coupled to the input of the mechanical transmission and the rotating element is coupled to the output, and wherein the mechanical transmission converts the linear motion of the plunger at the input into rotational motion of the rotating element at the output; a magnet coupled to the rotating element; a magnetic sensor configured adjacent to the magnet and operable to generate rotation sensor data corresponding to the rotation of the magnet; and one or more processors configured to control the magnetic sensor and detect the movement of the plunger along the linear range of motion based on the rotation sensor data.

The invention provides a liquid chromatography-mass spectrometry method capable of efficiently detecting a deoxynivalenol (DON) metabolic intermediate product, namely 3-keto-DON (3-keto-DON). The detection method comprises a liquid phase elution procedure and a mass spectrum acquisition mode. According to the method, the detection time is 10 min, the retention time of 3-keto-DON is 6.99 min, the detection limit is 4 ng / ml, the quantitation limit is 10 ng / ml, the linear range is 10-1800 ng / ml, the correlation coefficient R2 is equal to 0.9995, and the relative standard deviation RSD is 1.99%.

The invention relates to a protective circuit (1) for an appliance circuit breaker or circuit breaker, having: an actively controllable component (B1) which can be controlled in a linear range; - at least one measuring device (SP, SU, Si, SUin, SUout) for determining a power which is converted in the actively controllable component (B1); - a processing unit (uC); - wherein an energy equivalent can be determined on the basis of the determined power and a time between two measurements, - wherein temporally separate energy equivalents are summarised by the processing unit (uC); - wherein at least two time-related limit values (Gt1, Gt2,...Gtn) are provided;, - wherein, when if a limit value (Gt1, Gt2,...Gtn) is reached and / or exceeded by an energy equivalent or the combined energy equivalents in the time assigned to a limit value (Gt1, Gt2,...Gtn), the active controllable component (B1) is actuated by the processing unit (uC) so that the current flow through. The invention also relates to a method.

The invention discloses a method for detecting hexavalent chromium based on undoped graphitized fluorescent carbon dots and application, and relates to the technical field of fluorescent sensors, novel fluorescent carbon dots are synthesized through a sulfuric acid-assisted one-step hydrothermal method, and due to the highly graphitized characteristic of the carbon dots, the static quenching competitive effect caused by ferric iron is effectively weakened; meanwhile, rich surface functional groups and surface defects are achieved, the selectivity and sensitivity of hexavalent chromium detection in underground water are remarkably improved, the detection limit is reduced, the fluorescence intensity and the hexavalent chromium concentration are in a good linear relation, the linear range is 0.04 mg.L <-1 > to 0.32 mg.L <-1 >, the linear range is 0.80 mg.L <-1 > to 3.20 mg.L <-1 >, and the detection limit is 0.002 mg.L <-1 >. The carbon dots can be successfully applied to detection of hexavalent chromium in a water environment, the recovery rate is 85%-115%, RSD% is smaller than or equal to 15%, and the fluorescent carbon quantum dot probe kit has good application prospects.

The invention relates to the technical field of environment detection and pollution treatment, in particular to a magnetic nano-enzyme composite material capable of detecting and removing perfluorooctanoic acid (PFOA) and a preparation method of the magnetic nano-enzyme composite material capable of detecting and removing the perfluorooctanoic acid (PFOA). Different signal transduction is caused by a masking effect on a nano-enzyme catalysis site in an adsorption process, so that high-sensitivity multi-mode detection of PFOA is realized; meanwhile, the composite material adsorbed with the PFOA is rapidly separated and the PFOA is effectively degraded by virtue of a magnetic separation technology and the catalytic property of the nano-enzyme, so that the synchronous detection and removal of the PFOA in the water body are realized. The composite material is environment-friendly in preparation process, simple to operate, high in yield, wide in detection linear range (0-300 mu M), good in selectivity and high in removal efficiency, solves the technical problems that PFOA detection operation is complicated, equipment is expensive and detection and removal cannot be synchronously realized in the prior art, and has important practical application value.

The application belongs to the field of biosensing detection, and relates to a preparation method of an electrochemiluminescence aptamer sensor for detecting Cd 2+ and application thereof. The application first prepares two materials of PTCA-COF and AuNCs, and modifies the two materials to the surface of a treated glassy carbon electrode in a layer-by-layer manner. Meanwhile, a specific recognition element aptamer for Cd 2+ is introduced, and an electrochemiluminescence aptamer sensor based on PTCA-COF / AuNCs is constructed based on the quenching effect of Fc connected to the aptamer on the electrochemiluminescence signal. The electrochemiluminescence aptamer sensor takes PTCA-COF as a base material and enhances the electrochemiluminescence signal of the luminescent body AuNCs. The constructed sensor has excellent detection and analysis performance on the target Cd 2+ , and has a linear range of 1.0*10 ‑12 -5.0*10 ‑9 M, a detection limit of 6.6*10 ‑13 M, and advantages of high sensitivity, selectivity and reliability.

This invention belongs to the field of electrochemical sensor technology and aims to solve the problems of low sensitivity, insufficient charge transport efficiency, and weak target enrichment ability of existing electrochemical detection methods for niclosamide. It provides a highly sensitive electrochemical detection method and sensor for niclosamide based on MOF / COF composite materials. The sensor uses a glassy carbon electrode modified with MOF / COF composite material as the working electrode, combined with an auxiliary electrode and a reference electrode to form a three-electrode system. It utilizes the synergistic effect of the high specific surface area and high catalytic activity of MOF and the good conductivity and ordered porous structure of COF to enhance the adsorption, enrichment, and electron transfer efficiency of niclosamide. The detection method achieves accurate detection of niclosamide by optimizing electrochemical test parameters and employing square wave voltammetry. This invention features a low detection limit, wide linear range, strong anti-interference ability, excellent stability and reproducibility, and can rapidly detect niclosamide in water, soil, fish, and tablets, possessing broad practical application value.

According to the rotor position data calculation method of the magnetic drive conveying system and the related equipment, the magnetic drive conveying system comprises a stator and a rotor, the stator is provided with a transmitting assembly and a receiving assembly, and the rotor is provided with an induction component. Controlling the emission assembly to emit an excitation signal at the initial emission power, wherein the excitation signal is used for making the induction part generate an induction magnetic field; acquiring real-time air gap state data generated by induction of the induction magnetic field by the receiving assembly; the real-time transmitting power of the transmitting assembly is adjusted based on the real-time air gap state data, so that the amplitude of the induction electric signal output by the receiving assembly is maintained in a preset linear interval; and the position data of the rotor is calculated based on the induction electric signal in the preset linear interval, so that the data accuracy of the rotor position data acquired in real time in actual operation of the magnetic drive conveying system is improved.

The application relates to a foodborne pathogenic bacteria multiplex digital PCR detection reagent, a detection device and a detection method thereof. The application provides a super-multiplex foodborne pathogenic bacteria digital PCR detection system based on a multi-color coding technology. The system breaks through the physical limitation of a fluorescence channel through an innovative probe coding strategy and a signal decoding algorithm, realizes absolute quantitative detection of 7 or more foodborne pathogenic bacteria in a single reaction tube at the same time, and ensures high specificity, high accuracy, a wide linear range and good repeatability in a complex matrix.

This invention relates to the field of electrochemical-colorimetric analysis and detection technology, specifically to a bifunctional Ru / MoB MBene sensing probe, its preparation method, sensor, and applications. The key technical points are: mixing surface-modified Ru with a two-dimensional MoB MBene nanosheet suspension, and preparing a Ru / MoB MBene composite material via electrostatic self-assembly as a bifunctional sensing probe. This probe is used to construct an electrochemical-colorimetric dual-mode sensor, employing a dual-mode signal output strategy to fully leverage the advantages of electrochemical methods in terms of sensitivity, linear range, and precise quantification. It also integrates rapid colorimetric visualization and on-site screening capabilities. The two modes can operate independently or mutually verify each other, significantly improving the reliability of detection results, resistance to matrix interference, and practical applicability. This overcomes the problems of poor portability, long detection cycles, and insufficient sensitivity to trace micro / nanoplastics found in traditional equipment.

The application provides a method for improving the linear range of a latex-enhanced turbidimetry kit and the latex-enhanced turbidimetry kit, and relates to the technical field of analysis and detection. The application finds that sodium deoxycholate is added to reagent 1 of the existing latex-enhanced turbidimetry kit. Experimental verification shows that the correlation coefficient of the existing latex-enhanced turbidimetry kit can be effectively improved, and the upper limit of the detection linearity of the latex-enhanced turbidimetry kit is improved to 500 mg / L, thereby effectively alleviating the problem that the linear range of the reagent of the existing latex-enhanced turbidimetry kit is narrow, and 90% of the sample amount in the clinic cannot be covered, so as to affect the accuracy of the clinical detection result.