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Laser fluorescent induction technology-based real-time in-situ detection device for soil pollution

A technology for in-situ detection of soil pollution, applied in measuring devices, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problem that NAPLs pollutants cannot be effectively tested, the scope of pollution cannot be quickly determined on site, and pollutants cannot be obtained Three-dimensional spatial distribution and other issues, to achieve the effect of reducing the workload of sampling analysis, shortening the investigation cycle, and small disturbance

Pending Publication Date: 2018-12-21
南京贻润环境科技有限公司 +1
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the technical problems in the current polluted site investigation process, specifically including: the organic pollutants in the soil will be lost during the sampling and circulation process, resulting in low measured concentrations; The cost is high, and the scope of pollution cannot be quickly determined on site; only point-like information of pollutants at the polluted site can be obtained, and high-resolution three-dimensional spatial distribution of pollutants cannot be obtained; effective testing for NAPLs pollutants is impossible

Method used

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  • Laser fluorescent induction technology-based real-time in-situ detection device for soil pollution
  • Laser fluorescent induction technology-based real-time in-situ detection device for soil pollution

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Embodiment

[0034] A pesticide chemical plant was required by the environmental protection department to investigate the soil in the plant area. According to the information provided by the pesticide plant, the plant area is dominated by miscellaneous fill and clay, and the pollutants are mostly non-water-soluble pollutants such as polycyclic aromatic hydrocarbons. Such as figure 1 , Turn on the personal computer 17, the all-solid-state laser 2, the monochromator 15, and the ICCD16, and preheat the all-solid-state laser, the all-solid-state laser 2, the monochromator 15 and the ICCD16. After warming up, set the laser wavelength and frequency of the all-solid-state laser 2 through the PC control software; set the fluorescence band and slit width received by the monochromator 15; set the time resolution gate width of ICCD16; set the pulse delay generator 1 The parameters are coordinated with the laser pulse width and the shutter opening time of ICCD16 to ensure that the background noise is m...

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Abstract

The invention discloses a laser fluorescent induction technology-based real-time in-situ detection device for soil pollution. The detection device comprises a drilling head, a laser emission system, adetection system, a data acquisition processing system and a control system, wherein a probe is arranged on the drilling head, the laser emission system is used for emitting and transferring a pulselaser signal to the probe, a fluorescent signal is generated when a soil pollutant at the probe is simulated by laser and then is transferred to the detection system for detection, and the data acquisition processing system is used for processing detected data and outputting a result in real time, and the control system is connected with the drilling head, the laser emission system and the detection system. The detection device employs an LIF technology to research a pollution site in real time, real-time in-situ detection can be performed on an organic pollutant in soil, and three-dimensionaldirection of the pollutant in the soil is provided in real time.

Description

Technical field [0001] The invention relates to an in-situ real-time detection device for soil pollution using laser fluorescence induction technology, and belongs to the technical field of environmental investigation and restoration. Background technique [0002] At present, my country's environmental pollution problem has been very serious, which has seriously affected the quality of life of the people. Among the many pollutions, the problem of soil pollution is very serious. Soil pollution is concealed and lagging. Unlike air pollution and water pollution, which can generally be directly felt by people, pollutants in the soil are often difficult to perceive, and corresponding tools must be used. Moreover, it often takes a long time from the occurrence of soil pollution to the discovery. Because the soil itself circulates slowly, its self-purification ability is poor, and it is difficult for pollutants to be diluted in the soil, soil pollution is cumulative. The geological s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N21/01
CPCG01N21/01G01N21/643G01N2021/0112
Inventor 吴翩翩尹业新聂溧徐敏郑孟杰梁德秀陈小萍刘淦源
Owner 南京贻润环境科技有限公司
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