67results about How to "Realize automatic sample injection" patented technology

The invention provides an automatic cigarette smoke analysis device which comprises a smoking machine main body, an igniter lifting mechanism, igniters, a six-joint robot, a Cambridge filter disc catcher supply mechanism, a cigarette sample supply mechanism, a Cambridge filter disc catcher sealing cover supply mechanism, a sealing cover covering mechanism and an analytic balance, wherein the six-joint robot is arranged in front of the smoking machine main body, cooperates with the Cambridge filter disc catcher supply mechanism, the cigarette sample supply mechanism, the Cambridge filter disc catcher sealing cover supply mechanism, the sealing cover covering mechanism and the analytic balance to analyze and process cigarette smoke. According to the automatic cigarette smoke analysis device provided by the invention, automatic sample introduction of the Cambridge filter disc catchers can be achieved effectively, cigarette samples are introduced and mounted automatically, the Cambridge filter disc catchers are weighed automatically, ignition is performed synchronously at all aperture passages, and all Cambridge filter disc catchers are covered with sealing covers automatically, so that the work efficiency is high and meanwhile the accuracy of analysis results is guaranteed.

The invention discloses an automatic single sample introduction device of a blood cell analyzer. The automatic single sample introduction device mainly comprises a transverse feed mechanism fixed on the blood cell analyzer, a longitudinal feed mechanism fixed on the transverse feed mechanism, a sampling mechanism fixed on the longitudinal feed mechanism, and a rotary sample introduction mechanismwhich is positioned below the transverse feed mechanism and fixed on a rack of the blood cell analyzer. Compared with the prior art, the device has the advantages that: by arranging the rotary sampleintroduction mechanism, a test tube is inserted into a test tube placing hole on a sample introduction base after manual uniform mixing to realize automatic introduction of a single blood sample and a test tube cover does not need to be taken down manually, so that a sampling needle can be totally isolated from the hand of people, and potential hazard of possibly puncturing the hand can be avoided during the conventional single blood sample test; moreover, the device can be operated more safely and easily; and the sampling mechanism can move in the horizontal and vertical directions, so the sampling needle is positioned more flexibly. The whole sample introduction device has a simple structure and high automation degree.

The invention discloses a sample introduction method and a sample introduction device for microfluidics detection of a fish-farming water environment. Two ends of a tank body are respectively connected with an A end extrusion pump and a B end extrusion pump, and a 10 mum level filter screen is arranged in a space between the A end extrusion pump and the B end extrusion pump in a cavity of the tank body. A sample introduction channel is connected with a microfluidics device outside the tank body, the top of the tank body is connected with a magnetic stirring and pumping pressure conveying structure through a sample channel, an original water sample in the fish-farming water environment can be automatically and fully stirred, cluster materials including cenobium and the like in the water sample can be automatically dispersed, and extrusion pumps at two ends are respectively extruded according to a certain sequence. After the dispersed sample is automatically guided in through a push type sample introduction mode, the introduced sample is filtered, the processes from sample dispersing, sample filtering, sample introduction to the filter screen cleaning can be completed in a full automation mode, the microfluidics detection is guaranteed to be carried out smoothly, and the degree of automation is high.

The invention provides a turbidity meter. The turbidity meter comprises a sample tank, a light source and a detector and a control system, and further comprises a heating system and a cooling system, wherein the light source and the detector are fixed on the two sides of the sample tank respectively; the control system is used for controlling the light source and the detector; the heating system is used for heating a sample to be heated; the heating system comprises a heating furnace for providing a sealed space and storing the sample tank; the heating furnace is further provided with an optical window for allowing light to pass through; the sample tank comprises a sample tank main body made of a high-temperature-resisting and corrosion-resisting material, and a window plate which is made of a high-temperature-resisting and corrosion-resisting material and through which visible light and near-infrared light pass; and the window plate is aligned to the optical window. The turbidity meter provided by the invention is additionally provided with the heating system and the cooling system, and the matched and designed sample tank, so that the turbidity of a sample with the temperature more than 200 DEG C and having corrosion is metered; and the turbidity meter has the advantages of good safety, strong operability, wide applicable range and the like.

The invention relates to an ammonia nitrogen detection method and an ammonia nitrogen detection device based on electrodialysis ion transformation. Through a polarization principle of electrodialysis, pure water is electrolyzed to generate alkaline electrolytic water so as to replace the effect of a sodium hydroxide solution, thus achieving transformation of ammonium ions in a sample solution. The ammonia nitrogen detection device comprises an anode compartment electrodialysis cell, a cathode compartment electrodialysis cell, an electromagnetic valve, an injection pump and a detection tank, wherein two electrode compartments of the anode compartment electrodialysis cell and the cathode compartment electrodialysis cell are separated by a cation exchange membrane; cation exchange resin and an anode electrode are arranged inside the anode compartment; anion exchange resin and a cathode electrode are arranged inside the cathode compartment. The ammonia nitrogen detection method comprises the following steps: electrolyzing by the electrodialysis device by using an electrolytic cell with the two electrode compartments; after electrolysis, transferring a certain volume of alkaline electrolytic water to the detection tank, mixing the electrolytic water with a water sample to be detected according to a proportion, and ensuring that the pH of the mixed water sample is higher than 11 to meet an alkalization need; detecting by using an ammonia-sensitive electrode to obtain the ammonia nitrogen content value of the water sample to be detected. Chemical reagents are not required, and alkaline electrolytic water can be continuously generated only by using electrical energy and pure water, so that environment pollution and secondary pollution are avoided.

The invention discloses an automatic sample pretreatment system which comprises a mounting frame, and a horizontal conveying mechanism, a clamping mechanism, a safety protection mechanism, a vertical lifting mechanism, a weighing and filling mechanism, a sample frame transmission device, a mixing device, an automatic cover opening and closing transfer mechanism and a bar code scanner are arranged on the mounting frame. According to the invention, the whole-support or single-support automatic sample injection of a sample can be realized, and the sample can be added at any time in the sample injection process, so that the operation flexibility of medical personnel is improved; transferring, weighing, filling, uniform mixing and sample adding of samples can be achieved, and the pretreatment efficiency and consistency are improved; in the filling process, standardized addition can be performed according to a weighing result, so that errors caused by manual sample size evaluation are effectively solved, and the sample digestion effect is improved; and by adopting the uniform mixing device capable of improving the homogenization treatment effect of the non-liquid sample, the uniform mixing effect is enhanced.

The invention provides a horizontal large-volume sampling system and method for gas chromatography. The horizontal large-volume sampling system for gas chromatography includes a total flow control valve, a septum nut and a septum, a septum purge control valve, Diverter valve, diverter outlet control valve, liner, column nut and gasket, chromatographic column, temperature control module, characterized in that the liner is a double-cone splitless liner, placed horizontally, that is, parallel to the ground Placement, the positions of septum nut and septum, column nut and seal, chromatographic column, and temperature control module are also changed accordingly. The horizontal direction is from front to back: septum nut and septum, liner, column nut and a sealing gasket and a chromatographic column, and a temperature control module wraps the liner laterally; the gas chromatography large-volume sampling method is applied to the large-volume sampling system. It overcomes the technical prejudice that the liner is placed vertically, and effectively solves the technical problem that the solution entering the liner easily flows out from the immersed tube under the action of gravity.

The invention provides a method for detecting an alprostadil freeze-dried lipid emulsion. The method comprises the steps: 1) adding water to the alprostadil freeze-dried lipid emulsion, and re-dissolving to obtain a sample aqueous solution; 2) demulsifying the sample aqueous solution obtained in the step 1) with a demulsifier, to obtain a demulsified sample solution, wherein the volume ratio (ml:ml) of the demulsifier to the sample aqueous solution is 5:1-5:6; and 3) determining the contents of alprostadil and prostaglandin A1 in the demulsified sample solution obtained in the step 2) by high performance liquid chromatography, wherein the demulsifier is composed of an organic solvent A and an organic solvent B, the organic solvent A is selected from the group consisting of alcohols, and the organic solvent B is selected from the group consisting of alkanes or tetrahydrofuran. The method for detecting the alprostadil freeze-dried lipid emulsion has the advantages of high recovery rate and accurate measurement results, enhances quality detection standards of the alprostadil freeze-dried lipid emulsion, reinforces the quality controllability of drugs, thereby ensuring the effectiveness and the safety of clinical medication.

The invention relates to an automatic sample injection system for greenhouse gas. The system comprises a control device, a relay, an input device, a solenoid valve, a gas sample injection device, a gas washing device, a quick connection port, a plurality of groups of culture devices and a power source. The culture devices, the gas sample injection device, and an external detector are connected bymeans of non-detachable connection in multi-times sample injection detection of the whole process to keep the high airtightness of the culture devices in the multi-times sample injection detection process. With a water-proof and drying device, the dryness is ensured. Besides, a plurality of synchronous expansion ports are designed and electrical equipment is added based on the experimental requirements, so that the high scalability is realized; automatic sample injection is realized by controlling the multiple groups of culture devices in the lab and an NAND gate system protection program is employed to control a gas washing solenoid valve to prevent the blocking risk of the external detector, thereby realizing protection of the external detector; and the whole system is capable of realizing indoor culturing of the lab and in-situ batched real-time, accurate automatic greenhouse gas injection in the laboratory, so that the workload of the experiment staff is reduced substantially.

The invention provides a sampling device based on induction electrospray and a mass spectrometry method. The sampling device based on the induction electrospray comprises at least two spray needles, wherein each spray needle comprises a capillary tube, an electrode and a distance adjusting member for adjusting the distance between the electrode and the capillary tube; a first driving unit for driving at least two spray needles to translate; a power supply electrode for connecting an external power supply; a second driving unit for driving the power supply electrode to translate in the direction parallel to the extending direction of the spray needles to enable the power supply electrode to contact and break away from electrodes in the spray needles. The device has the advantages of simplestructure, high detection efficiency and the like.

The invention relates to a multi-channel microfluidic chip detection device for vacuum negative pressure sample injection and a preparation method and application. The multi-channel microfluidic chipcomprises a main channel, a sample loading channel, a filter membrane, an optical transparent layer etched with a microchannel, and an optical transparent layer not etched with the microchannel; theoptical transparent layer etched with the microchannel is bonded and connected with the optical transparent layer not etched with the microchannel; the main channel and the sample loading channel arein negative pressure states; the filter membrane is located at the upper part of the main channel and bonded with the optical transparent layer etched with the microchannel and the optical transparentlayer not etched with the microchannel. The detection device disclosed by the invention has a small amount of samples and can realize automatic sample injection of the samples, 100% separation of blood cells and plasma of a whole blood sample, and seamless docking between the sample loading channel and a paper chip, so that separation and detection steps can be completed simultaneously.

The invention relates to a fast-temperature-rise microfluidic chip system, which comprises a chip, a support frame, a two-dimensional regulating platform and an injection pump, wherein the chip comprises a substrate, a cover sheet, an electromagnetic valve, a refrigeration device and a heating device; the substrate is provided with a microfluidic passage; a constant-temperature liquid storage region, a temperature jumping region and a test region are sequentially formed in the microfluidic passage; the cover sheet covers and seals the substrate; the electromagnetic valve is communicated with the microfluidic passage; the refrigeration device is arranged in a way of being tightly attached to the constant-temperature liquid storage region of the substrate; the heating device is arranged in a way of being tightly attached to the temperature jumping region of the substrate; the test region is exposed in the irradiation of synchronous radiation light for performing test; the support frame is used for installing and fixing the chip; the two-dimensional regulating platform is used for regulating the position of the support frame and comprises a horizontal position regulating module and a vertical position regulating module; the injection pump is provided with a body and a first valve opening connected with the body; the valve opening is communicated with the microfluidic passage of the chip. The chip system provided by the invention can realize the fast temperature pumping of a solution sample, and is used for synchronous radiation reaction dynamic study.

The invention discloses a photoelectrochemical cell and its auxiliary device. It consists of two parts, the photoelectrochemical reaction cell and the auxiliary device. The photoelectrochemical cell and its auxiliary device can realize the combined use of an electrochemical workstation and a fluorescence spectrometer to realize in-situ detection of the intensity and wavelength of electrochemiluminescence. This device creatively connects the electrochemical workstation and the fluorescence spectrometer, utilizes the advantages of the fluorescence spectrometer detector to distinguish the wavelength, improves the wavelength resolution ability of the electrochemiluminescence, and is beneficial to the optical behavior research of the electrochemiluminescence material; and overcomes the The limitation that the fluorescence spectrometer is only used for photoluminescence expands the application of the fluorescence spectrometer in electroluminescence.

The invention discloses a self-headspace gas chromatography sample injector. The self-headspace gas chromatography sample injector comprises a control system, a gas path system, a positioning system and a bottom plate, wherein the control system includes a control panel and a single chip microcomputer, and the control panel is connected with the single chip microcomputer through a flat cable; thepositioning system includes a sample disc, a gear disc, a motor, an air cylinder, an air cylinder arm, a middle shaft rod and a side shaft rod; and the gas path system includes a three-way needle inlet valve, a three-way needle withdrawing valve, an air pressure stabilizing valve, a two-way gas inlet valve, a flow limiting filter, a six-way sample inlet valve, a two-way gas outlet valve, a three-way exhaust valve, a vacuum pump and a sample inlet needle. Automatic self-headspace sample injection of a gas sample can be realized by combining with gas chromatography.

The invention is suitable for the technical field of direct-reading spectrum detection equipment, and provides a sample pretreatment mechanism, which comprises a sample introduction assembly, a sampling assembly, a sample grinding assembly and a transfer assembly. The sampling assembly is driven by the transferring assembly to reciprocate in the x-axis direction, the y-axis direction and the z-axis direction, so that the sampling assembly grabs a sample from a sample position, the grabbed sample is transferred to the sample grinding assembly to be ground, and the ground sample is transferred to a designated position; or the sampling assembly directly transfers the sample grabbed from the sample position to a designated position, so that traditional manual sample pretreatment is converted into mechanical sample pretreatment, on one hand, the detection efficiency is improved, on the other hand, huge workload can be dealt with, operation errors caused by exhaustion of operators are avoided, and the safety of operators is ensured; and the labor intensity of the operators is reduced. The invention further provides a full-automatic analysis system which comprises the sample pretreatment mechanism and is used for the direct-reading spectrometer.

The invention discloses a repairing device applied after removal of bacterial plaques on the surface of a material in a cabin of a space station and an application method, and relates to the technical field of cabin inner surface repairing. The repairing device comprises a liquid storage bag, a sample injector and a brush head, wherein a liquid outlet of the liquid storage bag is communicated with an inlet of the sample injector; and the brush head is arranged at the front end of the sample injector. The equipment is small and light, is simple to operate, is matched with a water-based antibacterial and mildew-proof agent, and can be used for repairing after removal of the bacterial plaques on the surface of the material in the cabin under microgravity. Negative-pressure automatic liquid supply is realized according to the following manner: a movable handle is pressed/loosened, and the water-based antibacterial and mildew-proof agent is automatically injected by utilizing the pressure change in a volumetric flask. The adjustability of the sample injection amount is realized according to the following manner: the brush head is selected according to the required coating area and the required position of the surface of the material in the cabin of the space station, the required sample injection amount is determined, the movable handle is pressed to enable an adjusting gear to be matched with a positioning sleeve, and the sample injection amount can be adjusted by rotating the adjusting gear. The suck-back prevention function is realized according to the following manner: the design of one-way valves is adopted, only one of the two one-way valves is opened at the same time, liquid can only move in the single direction, and liquid backflow can be prevented.