7 results about "Arsenic" patented technology

The invention relates to a method and a device for detecting stored-grain insects. A near infrared super-spectral imaging device for automatically acquiring grain screen underflows consists of five parts including a light box, a lighting unit, a displacement unit, a spectral imaging unit and a computer, wherein the spectral imaging unit comprises an indium-gallium-arsenic near infrared camera, an imaging spectrometer and a near infrared lens. The method for detecting stored-grain insects comprises the following steps of extracting the wavelength of an optimal spectrum synchronously containing data cube of both of live insect and dead insect, and determining the number of the live insects in stored-grain insects and the coordinate information of each live insect in the image; extracting sub-area of the image in which the live insects in the stored-grain insects are located, determining species information of the live insects in the stored-grain insects by identification software according to the near infrared spectrum characteristics of the live insects in the stored-grain insects, and realizing the automatic detection of the stored-grain insects.

The invention relates to an arsenic-lead mixed vapor graded condensing device and an application method thereof, and belongs to the technical field of alloy separation equipment. The device comprisesa vacuuming device, a flange, temperature measuring devices, a grading vacuum furnace body, a quartz tube, a push rod, a control cabinet, a heating zone and a recovery foil. The length of the quartz tube is 1.2 to 2 m; the length of the heating zone It is 0.15-0.25m; the quartz tube is respectively provided with the temperature measuring device every 2-3cm. The device forms a certain temperature gradient in the quartz tube, so that materials condense in corresponding temperature ranges, the purpose of high-efficiency separation can be achieved; the application method is simple in process.

The invention provides a method for simultaneously measuring the content of phosphorus and arsenic in gas mud and gas ash, and relates to the field of chemistry and chemical engineering. The method for simultaneously measuring the contents of phosphorus and arsenic in the gas mud and the gas ash comprises the following steps: (1) pretreating silicon dioxide, monatomic silicon and reductive metal elementary substances in a sample; (2) after stirring, oxidizing free carbon in the sample, decomposing the sample and removing fluorine; (3) filtering the mixed solution and fixing the volume; (4) preparing a mixed standard solution containing phosphorus and arsenic; (5) determining and calculating the content of phosphorus and arsenic; the method provided by the invention solves the problems of high difficulty in measuring the content of phosphorus and arsenic in the gas mud and the gas ash, large test result deviation and complicated operation, is convenient and quick, is easy to operate, is high in accuracy of the measured content of phosphorus and arsenic, and is suitable for measuring the content of phosphorus and arsenic in the substances in production and scientific research.