35results about How to "Determination of concentration" patented technology

To provide a concentration measurement method with which the concentrations of predetermined chemical components can be measured non-destructively, accurately, and rapidly by a simple means, up to the concentrations in trace amount ranges, as well as a concentration measurement method with which the concentrations of chemical components in a measurement target can be accurately and rapidly measured in real time up to the concentrations in nano-order trace amount ranges, and which is endowed with a versatility that can be realized in a variety of embodiments and modes. In the present invention, a measurement target is irradiated, in a time sharing manner, with light of a first wavelength and light of a second wavelength that have different optical absorption rates with respect to the measurement target. The light of each wavelength, arriving optically via the measurement target as a result of irradiation with the light of each wavelength, is received at a shared light-receiving sensor. A differential signal is formed, the differential signal being of a signal pertaining to the light of the first wavelength and a signal pertaining to the light of the second wavelength, the signals outputted from the light-receiving sensor upon receipt of the light. The concentration of a chemical component in the measurement target is derived on the basis of the differential signal.

An apparatus for determining the concentration of a gaseous component is provided with which a sufficiently large optical values are detected without the need of using a laser having a high emission intensity or a large light collector, and the determination of the concentration of a target component within a desired section is rendered possible. The apparatus comprises: a laser (3) which emits a first laser light having such a wavelength that the target component absorbs the light and a second laser light having such a wavelength that the target component does not absorb the light; first and second scattering objects (5) and (7) located in the range irradiated with the first laser light and the second laser light and disposed apart from each other in the direction of the emission of the first laser light and second laser light; a photodetector (9) which detects first and second scattered lights resulting from the scattering of the first laser light and second laser light by the first scattering object (5) and third and fourth scattered lights resulting from the scattering of the first laser light and second laser light by the second scattering object (7); and a concentration calculator (11) which calculates the concentration of the target component in the section ranging from the first scattering object (5) to the second scattering object (7), based on the values detected by the photodetector (9).

The invention provides a measurement apparatus and a measurement method. The measurement apparatus for measuring the concentration of a target substance contained in a sample includes: a light source (light source device); a light-incident body (sensor chip) that has a sample contact surface, where an enhanced electric field is formed by metal particles, and enhances Raman scattering light radiated from the target substance by light emitted from the light source in the enhanced electric field; an irradiation unit that causes the light emitted from the light source to enter into a plurality of areas in the light-incident body; a light-receiving unit (light-receiving element) that receives the Raman scattering light radiated from a plurality of the areas; and a quantitative measurement unit (control device) that quantitatively measures a concentration of the target substance based on a total number of the areas and a strength of the Raman scattering light received from the areas.

The present invention provides a method for quantifying a monoclonal antibody, comprising the steps of: contacting a porous body in which a monoclonal antibody to be measured is immobilized in a pore with microparticles immobilized with a specific protease, and quantifying the monoclonal antibody. a step of selective protease digestion; and a step of detecting a peptide fragment obtained by the aforementioned digestion comprising amino acids derived from the CDR2 region of the heavy chain or light chain of the aforementioned monoclonal antibody.

The invention discloses a zirconium-based metal organic framework material UiO-66 and its application. Dissolving zirconium tetrachloride and acetic acid in N,N-dimethylformamide, adding terephthalic acid and stirring evenly to obtain a mixed Reaction solution; then transfer the mixed reaction solution to a reaction kettle, and place it at 120° C. for 7 to 24 hours of reaction, then cool to room temperature, carry out solid-liquid separation, and then clean and dry the solid obtained after solid-liquid separation and dried to prepare the zirconium-based metal-organic framework material UiO‑66. The zirconium-based metal-organic framework material UiO‑66 can be used as a liquid binding phase of a DGT device for the determination of active phosphorus in water. The invention has good binding ability to phosphorus, and can be used as a liquid binding phase in a DGT device. It can not only collect and quickly detect active phosphorus in water, but also has simple operation, high accuracy, good stability, and is suitable for long-term storage. and large-scale production.

The invention discloses a multi-cavity sampling device for microplastic on surface water. The multi-cavity sampling device comprises a cylindrical net framework, a plurality of filter screen structures, a connecting rod penetrating through inside of the device, a plurality of limiting devices matched with the connecting rod, a leaking box and buoys fixed on two sides of the net framework, whereinmesh size of the plurality of filter screens and the filter screen structures in the device is reduced from top to bottom in sequence. Compared with the prior art, an existing microplastic collectingdevice for the surface water filters and screens microplastic garbage in water only by primary filter screens and cannot separate the microplastic garbage; the device provided by the invention can screen different sizes of microplastic and organic contaminated sphere garbage, the structure is simple, and the design is reasonable.

The invention discloses a narrow space rescue equipment and its use method. The top of the robot main body is equipped with a multi-degree-of-freedom mechanical arm through a rack and pinion sliding mechanism, and the end of the multi-degree-of-freedom mechanical arm is equipped with a A manipulator for carrying and moving; the top of the robot main body is equipped with a wire rope traction mechanism; the bottom of the robot main body is equipped with a fixing mechanism through a push plate and a push plate chute, and the fixing mechanism cooperates with a multi-degree-of-freedom mechanical arm and The manipulator adjusts the posture of the front or rear limbs of the trapped person and fixes them; the bottom of the main body of the robot is connected to the first section structure of the trolley through a telescopic mechanism, and a rescue drag bucket structure is installed on the first section structure. This rescue robot can replace rescuers to go deep into narrow spaces and carry out rescue operations independently.