Fluorescence collection device for in-situ monitoring and analysis of organic pollutants in soil

Abstract

The invention discloses a fluorescence collection device for in-situ monitoring and analysis of soil organic pollutants, which comprises a shell, and a light source module, a front fluorescence collection module, a fluorescence imaging module and a spectrum detection module which are arranged in the shell from bottom to top in sequence, and an optical window is arranged on the side wall of the shell on one side of the front fluorescence collection module; detected soil is placed on the outer side of the optical window; measurement is easy and convenient, complex operation such as sample collection and laboratory pretreatment is not needed, synchronous collection of fluorescence images and three-dimensional fluorescence spectrums is achieved through combined work of the imaging camera and the optical fiber coupling probe system, integrated measurement of the fluorescence images and the three-dimensional fluorescence spectrums is achieved, spectral feature information of soil organic pollutants is obtained more comprehensively, and the measurement accuracy is improved. And the detection accuracy and reliability are improved.

Description

technical field [0001] The invention relates to the field of environmental detection, in particular to a fluorescence collection device for in-situ monitoring and analysis of soil organic pollutants. Background technique [0002] Polycyclic aromatic hydrocarbons (PAHs) are typical soil pollutants in my country, and their pollution degree is second only to heavy metals. PAHs are easily absorbed by soil particles and accumulated for a long time to form persistent environmental pollutants, and through the food chain migration and enrichment, they can cause carcinogenic, teratogenic, and mutagenic hazards to the human body. To prioritize the control of pollutants. The "Soil Pollution Prevention and Control Action Plan" issued by the State Council clearly stated that we should focus on monitoring organic pollutants such as polycyclic aromatic hydrocarbons and petroleum hydrocarbons in the soil, improve the soil environment monitoring technology system, and achieve full coverage ...

AI Technical Summary

Problems solved by technology

Portable gas chromatography-mass spectrometry measurement system combined with purge and trap can realize on-site analysis of soil PAHs, but the resolution and accuracy are poor, and problems such as on-site carrier gas supply, auxiliary equipment operation, and high power consumption limit its field application range

Infrared reflectance spectroscopy can be used for quantitative analysis of hydrocarbon organic pollution such as diesel oil and gasoline in soil, but the vibration modes of PAHs molecular functional groups are weak and their broad bands overlap, so they cannot be used for simultaneous detection of PAHs multi-components

Images