Ordinary brass full-elemental analysis apparatus based on laser-induced breakdown spectroscopy, and method thereof
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A technique for laser-induced breakdown, common brass, in analytical chemistry
Inactive Publication Date: 2012-02-22
AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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Since the common brass sample contains elements other than Zn and Cu, and the content of Zn is the balance, this curve cannot be directly used as the working curve of Cu in common brass
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[0050] LIBS device of the present invention such as Figure 9 As shown, it includes a laser 1, a spectrometer 2, a delay generator 3, a focusing lens 4, a collection lens 5, an optical fiber 6, a sample 7, and a computer 8; the laser 1 and the spectrometer 2 are connected to the delay generator 3 respectively, and the spectrometer 2 and The computer 8 is connected, the optical fiber 6 is connected with the spectrometer 2 ; the focusing lens 4 is arranged between the laser and the sample 7 , and the collecting lens 5 is connected with the spectrometer 2 through the optical fiber 6 . The laser 1 emits pulsed laser light at a period of 0.1 to 1 s. The emitted laser light passes through the focusing lens 4 and then converges on the surface of the sample 7 to form a spot. The spot ablates the sample 7 to form a high-temperature plasma. After the plasma is cooled rapidly, characteristics related to the sample composition are generated. Spectrum, the characteristic spectrum is importe...
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Abstract
The invention relates to an ordinary brass full-elemental analysis apparatus based on a laser-induced breakdown spectroscopy, and a method thereof, and belongs to the technical field of analytical chemistry. The apparatus comprises a laser, a spectrometer, a delay generator, a focusing lens, a collecting lens, optical fiber, a sample and a computer. The laser and the spectrometer are respectivelyconnected to the delay generator. The spectrometer is connected with the computer. The optical fiber is connected with the spectrometer. The focusing lens is arranged between the laser and the sample. The collecting lens is connected with the spectrometer by the optical fiber. The analysis method comprises: establishing working curves of Cu, Pb, Fe and Ni, and verifying the working curves. The apparatus and the method are applicable for analyzing the Cu content, the Pb content, the Fe content and the Ni content in the ordinary brass.
Description
technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular provides a general brass all-element analysis device and method based on laser-induced breakdown spectroscopy (LIBS), which is used to analyze Cu, Pb and other elements of common brass. , Fe, Ni element content. technical background [0002] Copper and copper alloys occupy an important position in the non-ferrous field, second only to aluminum. The national standard GB / T 5231-2001 gives four types of copper alloys produced in my country (pure copper, brass, bronze, and cupronickel), among which ordinary brass is a type of alloy in brass, and there are currently 10 types of grades: H59 , H62, H63, H65, H68, H70, H80, H85, H90, H96, used to manufacture valves, water pipes, connecting pipes for internal and external air conditioners and radiators, etc. The main elements of ordinary brass are a large amount of Cu (57% to 97%), trace amounts of Fe, Ni, Pb, and the remai...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63G01J3/28
Inventor 吴少波张云贵孙彦广李潘于立业苏胜石
Owner AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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