Device for detecting the content of heavy metal Cr element in soil by laser-induced breakdown spectroscopy

A laser-induced breakdown and spectral detection technology, used in thermal excitation analysis, material excitation analysis, etc., can solve the problems of large space, inconvenient rapid detection, complicated operation, etc., to overcome the requirements of the environment, easy to carry and Good handling and performance

Inactive Publication Date: 2015-12-23
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0003] Laser-induced breakdown spectroscopy (LIBS) is a rapid and on-site quantitative analysis technique for elemental composition in samples under development. The effective use of laser-induced breakdown spectroscopy can improve the accuracy of soil heavy metal pollution. The accuracy of the information, while the general la...

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  • Device for detecting the content of heavy metal Cr element in soil by laser-induced breakdown spectroscopy

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Embodiment Construction

[0020] The present invention will be further described below with reference to the accompanying drawings and examples, and the embodiments of the present invention include but not limited to the following examples.

[0021] Embodiment: In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

[0022] Such as figure 1 As shown, the present invention provides a device for detecting the content of heavy metal Cr in soil by laser-induced breakdown spectroscopy, including a solenoid valve A1, an air inlet pipe 2, a temperature and air pressure sensor 3, a soil sample support plate 4, a feed port 5, and an air outlet pipe 6. Solenoid valve B7, fused silica lens A8, optical fiber probe 9, optical fiber 10, optical fiber connector 11, laser-induced airtight chamber 12, spectrometer 13, fused silica lens B14, laser head 15, ICCD detector 16, external connection line 17 , femtosecond laser 18, bottom shell 19, cover plate 20 and micro a...

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Abstract

The invention discloses a device for detecting the content of heavy metal Cr element in soil by laser-induced breakdown spectroscopy, which comprises an electromagnetic valve A, an air inlet tube, a temperature and air pressure sensor, a soil sample carrier, a feed inlet, an air outlet tube, an electromagnetic valve B, a fused quartz lens A, an optical fiber probe, an optical fiber, an optical fiber connector, a closed laser induction chamber, a spectrometer, a fused quartz lens B, a laser head, an ICCD (Intensified Charge Coupled Device) detector, an external connection cable, a femtosecond laser, a bottom shell, a cover plate and a miniature air conditioner. The laser head, the fused quartz lens B and the soil carrier on the femtosecond laser are located on the shame horizontal straight line, the centers of the soil carrier, the fused quartz lens A and the optical fiber probe are located on the same longitudinal straight line, both ends of the optical fibers are connected with the optical fiber probe and the optical fiber connector, and the ICCD detector, the left side of which is connected with the external connection cable, is mounted on the left side of the spectrometer.

Description

technical field [0001] The invention belongs to the field of laser equipment, in particular to a device for detecting the content of heavy metal Cr in soil by laser-induced breakdown spectroscopy. Background technique [0002] With the development of human society, a large number of heavy metal wastes from industrial production and daily life have caused soil heavy metal pollution, and soil heavy metal pollution has become increasingly serious in recent years. The premise of soil heavy metal pollution control is to obtain more accurate information on the degree of soil heavy metal pollution. [0003] Laser-induced breakdown spectroscopy (LIBS) is a rapid and on-site quantitative analysis technology for elemental composition in samples under development. The effective use of laser-induced breakdown spectroscopy (LIBS) can improve the accuracy of soil heavy metal pollution. The accuracy of the information, while the general laser-induced breakdown spectrometer requires a worki...

Claims

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Application Information

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IPC IPC(8): G01N21/71
Inventor 蔡元学
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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