3 results about "Electrochemical detection" patented technology

The invention discloses a slurry gas detecting method in a pit, and aims to solve the problem of poor real-time performance of existing detecting techniques in the field of slurry gas detection. The detecting method includes that on the basis of an electrochemical detection principle, slurry passes an electrochemical detecting chamber and two layers of filtering films, redox reactions are generated on three electrodes by gas to generate currents, and after signal processing, the currents are transmitted by a transmitting device to a well drilling platform for judgment by on-duty operators. The electrochemical detecting chamber and two layers of filtering film structures formed by a punched-plate composite sintered metal filter and gas-transmitting films are designed, and the slurry gas detecting method is applicable to three-electrode electrochemical testing systems for methane detection as well as signal processing and transmitting devices of gas detecting signals. The slurry gas detecting method is applicable to real-time detection, and real-time slurry gas detection in the pit can be realized, so that blowout accidents can be prevented in advance, geologists are assisted to find and evaluate underground oil gas, and important research value is provided.

The invention provides a preparation method and application method of a sensorfor detecting a magnetic field based on magnetic induction protein.A micro-fluidic chip of a three-electrode system is prepared and grapheme working electrodes are modified with the magnetic induction protein by a covalent self-assembly mode. When the magnetic field is added externally, the magnetic induction protein produces response, protein conformation and dielectric properties change and impedance changes, and magnetic signals are converted into electrical signals. Detection of the magnetic field is achieved through an electrochemical detection impedance spectrum. According to the preparation method and application method of the sensor for detecting a magnetic filed based on magnetic induction protein, anovelmagnetic field detection device is designed and a novel detection method for the magnetic field is achieved through bionic design.