Laser induced breakdown spectroscopy (LIBS)-based dangerous waste detection system

Abstract

The invention discloses a laser induced breakdown spectroscopy (LIBS)-based dangerous waste detection system. The system comprises a computer, a digital delay pulse generator, a spectrometer, a laser,a displacement workbench, a high reflective mirror, a first focusing lens and a second focusing lens; the LIBS technology takes a laser as a plasma light source, characteristic spectrum and spectraldata transmitted in the high-temperature plasma cooling process are detected and processed, and analysis on the elemental composition and the content of the substances is realized. The system performsdeep analysis on the formation principle and the plasma spectral radiation mechanism of the laser induced plasma and builds a set of LIBS detection experimental system platform. LIBS experiment parameters are selected and optimized, a relation curve of different laser pulse energy, sample vertical displacement and C element spectral intensity is established, and optimal laser pulse energy and distance from a lens to the surface of the sample are determined.

Description

technical field [0001] The invention relates to the technical field of hazardous waste inspection systems, in particular to a hazardous waste detection system based on laser-induced breakdown spectroscopy, and in particular to its system connection structure. Background technique [0002] Hazardous waste refers to waste that has one or more hazardous characteristics such as corrosiveness, toxicity, flammability, reactivity, and infectivity, or waste that may cause harmful effects on the environment or human health. Its dangerous characteristics are manifested as short-term acute injury and long-term potential harm. Short-term acute injuries mainly refer to acute poisoning, fire, explosion, etc.; long-term potential hazards mainly refer to chronic poisoning, carcinogenicity, mutagenesis, pollution of surface water or groundwater, etc. [0003] Hazardous waste may also undergo physical, chemical, and biological transformations under natural conditions, causing secondary pollu...

AI Technical Summary

Problems solved by technology

[0005] However, the above detection process requires complex and cumbersome experimental procedures and long analysis time, the analysis efficiency is low, and it cannot provide real-time and fast heavy metal transportation analysis data. It is not rigorous and accurate enough, and there is still a lot of development in detection. space

Monitoring should be developed in the direction of convenience, speed, safety and accuracy, which is increasingly unable to meet the needs of hazardous waste treatment.

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