59results about How to "Detection concentration" patented technology

The invention discloses a novel fluorescence probe for specific detection of mercury ions. The novel fluorescence probe has high recognition selectivity for mercury ions, and has the advantages of easy synthesis, accessible materials, high yield and the like. The prepared fluorescence probe is a non-fluorescence substance, and can detect the mercury ion concentration on the basis of fluorescence enhancement and chroma enhancement.

The invention discloses equipment for detecting the concentration of combustible gas in a silo. The equipment comprises a gas collection device and a gas analysis device (20), wherein the gas collection device comprises at least one gas collection head (11) for collecting gas from at least one silo, a gas pump (12) and a first electromagnetic directional valve (13); the at leas one gas collection head (11) is connected with the inlet of the gas pump (12) through a pipeline; the outlet of the gas pump (12) is connected with the inlet of the first electromagnetic directional valve (13); the gas analysis device (20) is used for receiving the gas output by the outlet of the first electromagnetic directional valve (13) and collected by the at least one gas collection head (11), detecting the composition and concentration of the combustible gas in the gas, and outputting a signal indicating the composition and concentration. The equipment provided by the invention can detect the concentration of the combustible gas in the silo.

The invention relates to the technical field of biology, and discloses a method for detecting Escherichia coli in water and a detection culture solution. The method comprises the following steps: providing a series of Escherichia coli suspensions with different concentrations, filtering, concentrating, adding into the detection culture solution, culturing, recording the characteristic time of the Escherichia coli suspensions with different concentrations, and establishing a linear equation on Escherichia coli suspension concentration and characteristic time; filtering and concentrating a water sample to be detected, adding into the detection culture solution, culturing, recording the characteristic time of the water sample to be detected on the premise that the 410nm absorbance has obvious changes, and substituting the characteristic time in the linear equation to obtain the concentration value. On the basis of the principle of the enzyme substrate process, by using absorbance and fluorescence intensity as the standard and adopting the detection culture solution suitable for Escherichia coli, the method can quickly and accurately detect the concentration of Escherichia coli in water and can monitor the microbial contamination condition in water in real time.

The invention discloses a device and method for detecting concentration of a D-fructose solution. The device comprises a computer and a data acquisition device, wherein the data acquisition device comprises an electrochemical workstation, a container, a working electrode and a counter electrode, a cover plate is arranged at the top of the container, the working electrode and the counter electrode are oppositely arranged below the cover plate, a guide slot is formed in the cover plate, a conveying mechanism is arranged in the guide slot, the guide slot comprises an involute-shaped through slot and a groove in head-to-tail connection with the through slot, the top of the working electrode is connected with a first connection column, the first connection column penetrates through the cover plate and is positioned at the center of an involute base circle of the through slot, the top of the counter electrode is connected with a second connection column, the second connection column is fixed on the conveying mechanism and penetrates through the through slot, the top end of the first connection column is fixedly connected with the top end of the second connection column through a telescopic rod, the cover plate is connected with a lifter for driving the cover plate to move up and down, and a stirring mechanism is arranged at the bottom of the container. By adopting the device and method disclosed by the invention, the concentration of the D-fructose solution can be rapidly and accurately detected.

The invention discloses a device and method for detecting concentration of an L-rhamnose solution. The device comprises a computer and a data acquisition device, wherein the data acquisition device comprises an electrochemical workstation, a container, a working electrode and a counter electrode, a cover plate is arranged at the top of the container, the working electrode and the counter electrode are oppositely arranged below the cover plate, a guide slot is formed in the cover plate, a conveying mechanism is arranged in the guide slot, the guide slot comprises a through slot and a groove in head-to-tail connection with the through slot, the top of the working electrode is connected with a first connection column, the first connection column penetrates through the cover plate and is positioned at the center of a base circle of the through slot, the top of the counter electrode is connected with a second connection column, the second connection column is fixed on the conveying mechanism, the top end of the first connection column is fixedly connected with the top end of the second connection column through a telescopic rod, a first proximity switch and a second proximity switch are arranged at front end and back end of the through slot respectively, and the cover plate is connected with a lifter for driving the cover plate to move up and down. By adopting the device and method disclosed by the invention, the concentration of the L-rhamnose solution can be rapidly and accurately detected.

The invention provides a method and a system for detecting the concentration of trace gas on an open optical path based on a spectral absorption principle. The system is provided with a PCB control circuit, a laser emitter and a photoelectric detector, wherein the laser emitter and the photoelectric detector are respectively connected with the PCB control circuit; wherein the PCB control circuit comprises an MCU module, an amplifying and filtering module, a phase shift and phase sensitive detection module, an ADC sampling module and a self-calibration module, a collimating lens is arranged between the laser emitter and detected gas, an aspherical mirror is arranged between the photoelectric detector and the detected gas, the aspherical mirror gathers reflected laser to the photoelectric detector, the photoelectric detector is used for measuring reflected light power. The technical problems that an existing laser detection method cannot avoid interference of environmental noise, circuits and algorithms are complex, and cost is high are solved. The method and the system can be widely applied to gas concentration detection.

The invention provides a cell counting instrument and an application thereof and relates to the technical field of biological particle detection. The cell counting instrument comprises a positive pressure control unit, a negative pressure control unit, a counting module, a processing system, an effluent container and a sheath fluid container, wherein the counting module comprises a micro-fluidic chip. Due to the arrangement of a liquid inlet, a feeding hole, an effluent hole and a micro-channel on the micro-fluidic chip and the arrangement of an electric pulse signal detection area on the micro-channel, the whole liquid flow system is more compact and effective and the absolute counting of whole sample amount is realized, so that the result accuracy and consistency of cell counting are better than those of the present method and the problems of low integration level of the instrument, small detected sample amount and inaccurate result caused by cell layering and suspension in the priorart can be relieved. The counting module is designed in a detachable form, so that the flexibility of the cell counting instrument system is promoted and the cell counting instrument can meet different detection requirements of users. The invention also provides the application of the cell counting instrument.

The invention particularly relates to an air quality detector. The air quality detector comprises a fan, a laser generator, a silicon photocell, a photodiode, an analog signal conditioning circuit, an analog-to-digital conversion circuit, a calculation and judgment circuit and a display, wherein the laser generator is arranged in the air outgoing direction of the fan, and the laser outgoing direction of the laser generator is parallel with the illumination plane of the silicon photocell; an input end of the photodiode is connected with the silicon photocell, and an output end of the photodiode is connected with an input end of the analog signal conditioning circuit; an output end of the analog signal conditioning circuit is connected with an input end of the analog-to-digital conversion circuit, an output end of the analog-to-digital conversion circuit is connected with an input end of the calculation and judgment circuit, and an output end of the calculation and judgment circuit is connected with the display. With the adoption of the technical scheme, the concentration of solid particulate matters in the air can be detected by the aid of a laser source.

The invention discloses a concentration detection device and method for a D-fructose solution. The device comprises a computer and a data acquisition device, wherein the data acquisition device comprises an electrochemical workstation, a container, a working electrode and a counter electrode, a cover plate is arranged at the top of the container, the working electrode and the counter electrode are oppositely arranged below the cover plate, a guide slot is formed in the cover plate, a conveying mechanism which can move along the guide slot is arranged in the guide slot, the guide slot comprises an involute-shaped through slot and a groove in head-to-tail connection with the through slot, the top of the working electrode is connected with a first connection column, the first connection column penetrates through the cover plate and is positioned at the center of an involute base circle of the through slot, the first connection column is in rotating connection with the cover plate, the top of the counter electrode is connected with a second connection column, the second connection column is fixed on the conveying mechanism and penetrates through the through slot, the top end of the first connection column is fixedly connected with the top end of the second connection column through a telescopic rod, and a stirring mechanism is arranged at the bottom of the container. By adopting the device and method disclosed by the invention, the concentration of the D-fructose solution can be rapidly and accurately detected.

The invention provides a BP180 IgE antibody concentration detection kit and a detection method and an application thereof and belongs to the technical field of IgE detection methods. The kit comprisesa microporous strip, standard serum I, standard serum II, an enzyme labeled antibody solution, a buffer solution for reaction, a cleaning buffer solution, an enzyme matrix solution, a stop solution,a sealing plate and a pasting film. According to the BP180 IgE antibody concentration detection kit and the detection method and the application thereof provided by the invention, rapid detection of the BP180 IgE antibody in serum of an NBP patient is greatly facilitated, meanwhile, the concentration of the BP180 IgE antibody in the serum of a patient can be rapidly and effectively detected, so the concentration of the BP180 IgE antibody is used as one of secondary indexes of NBP diagnosis, furthermore, the BP180 IgE antibody in serum of a patient is detected by the BP180 IgE antibody concentration detection kit, and the BP180 IgE antibody concentration detection kit can further be used as one of indexes for evaluating the severity degree of the NBP disease.

The invention relates to a system for detecting a corrosive gas concentration in air. The system comprises an absorbing container, a buffering container and an air pump which are connected successively. A certain amount of deionized water is pre-placed in the absorbing container. While the air pump is operated, the air is pumped from the corrosive gas sampling place by the air pump through the absorbing container and the buffering container, the deionized water in the absorbing container can absorb a corrosive gas in the pumped air, and the buffering container is used for preventing the waterfrom entering the air pump, wherein the corrosive gas concentration C1 in the air of the corrosive gas sampling place is calculated by the following formula: C1=C0*V0/71/(T*Q/Vm). The system has the beneficial technical effects of pertinence detection of the corrosive gas, smaller measuring error, and better measuring stability and reliability.

The invention discloses a detector for concentration of chromium ions in drinking water. The detector comprises a chromium ion probe, an analog-digital converter, an original data cache, a flash memory device, a controller and a display. The chromium ion probe is connected with the analog-digital converter which is connected with the original data cache, the original data cache is connected with the flash memory device and the controller respectively, and an output end of the controller is connected with the display. The detector can accurately and quickly detect concentration of chromium ions in drinking water, and a safe and healthy drinking water environment is created for people in daily life.

The invention discloses a hand perspiration symptom diagnosis instrument which comprises a shell, a test area is arranged at the top of the shell, test consumables are arranged in the test area, an atomizer is arranged in the shell, the test area is provided with a mist through hole connected with the atomizer, test electrodes in contact with the test consumables are arranged below the two sides of the test consumables, and the mist through hole is connected with the atomizer. The shell is provided with a display screen and a control button, and the test electrode is electrically connected with the display screen and the control button. The hand perspiration diagnosis instrument provided by the invention can be used for quantitatively detecting the hand perspiration amount of a patient, so that the hand perspiration severity of the patient is objectively evaluated.