Soil composition in-situ analysis system and method

Abstract

The invention provides a soil composition in-situ analysis system and method. The in-situ analysis system comprises a sampling device and a detecting device, and the sampling device can transport thesoil samples collected in situ to the detecting device for detection, and the detecting device is fixedly connected with the ground through a support. The detecting device comprises a laser, an optical mechanism, a CCD camera, a spectrometer and a controller. The optical mechanism is connected with the laser, the CCD and the spectrometer through an optical fiber, a laser emitted by the laser is irradiated on a sample to generate reflected light and Raman scattered light which are respectively transmitted to the CCD camera and the spectrometer, and the controller can perform detection analysisfor the reflectance spectrum including sample information received by the CCD camera and the Raman scattered spectrum including sample information received by the spectrometer and can display an analysis result. The Raman spectrum analysis and the infrared spectroscopic analysis are combined to perform in-situ detection analysis of the soil so as to rapidly and accurately perform qualitative and quantitative analysis of soil components.

Description

technical field [0001] The invention relates to the technical field of soil component detection, in particular to a soil component in-situ analysis system and method. Background technique [0002] The discharge of industrial "three wastes", urban domestic sewage, and unreasonable application of pesticides and fertilizers have caused a large amount of heavy metal pollutants to enter the soil through various channels. With the development of economy and society, soil heavy metal pollution poses a huge threat to food security and human health. As a typical inorganic pollutant, heavy metals cannot be degraded but can only be transformed, and are easily adsorbed by soil particles, and It can exist in the soil environment for a long time, accumulate continuously, and has strong ecological toxicity. However, the full amount detection method widely used at present cannot accurately reflect the ecotoxicity of soil heavy metals. Due to the complex and heterogeneous composition of th...

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Problems solved by technology

[0003] In addition, the existing soil composition testing equipment needs to send the soil to be tested to the laboratory for testing, which is cumbersome, low in efficiency, and high in testing costs. At the same time, due to the complexity of the soil composition, soil texture, humidity, organic matter, The content of iron oxide, etc. will affect the spectral characteristics of the soil. Soil samples may have soil denaturation in the ex-situ detection, which will affect the detection results.

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