Soil heavy metal detection method and system

A detection method and detection system technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of large instrument size hardware configuration, time-consuming, inability to use soil on-site, rapid analysis, etc., and achieve the effect of strong correction ability

Pending Publication Date: 2021-12-14
GUANGZHOU HUAQING ENVIRONMENT MONITORING CO LTD
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Problems solved by technology

However, the above methods require complex and time-consuming sample preparation, digestion or extraction, or large instrument size and complex and sophisticated hardware configuration, which cannot be used for on-site and rapid analysis of soil, making it difficult to timely and effectively analyze the soil from the source. Monitoring and Prevention of Heavy Metal Pollution in Soil

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  • Soil heavy metal detection method and system
  • Soil heavy metal detection method and system
  • Soil heavy metal detection method and system

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Embodiment Construction

[0028] Below, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of not conflicting, the various embodiments described below or the technical features can be combined arbitrarily to form new embodiments. .

[0029] Such as figure 1 Shown, a kind of soil heavy metal detection method comprises the following steps:

[0030] 1) Establish a spectral library that stores spectral characteristic data of soils polluted by known types and concentrations of heavy metals;

[0031] 2) Obtain soil photos and spectral images of the soil area to be tested;

[0032] 3) extract the spectral feature data from the spectral image obtained in step 2), and calculate the spectral angle with the reference spectral feature data of the spectral library, and compare the similarity between the two, so as to obtain the heavy metal species contained in the soil of the area to be measu...

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Abstract

The invention discloses a soil heavy metal detection method and system, the detection method combines near infrared spectrum analysis and hyperspectral imaging technology, The method comprises the following steps: firstly, acquiring a picture and a spectral image of soil, then extracting spectral feature data from the spectral image, and calculating the spectral feature data and spectral feature data in a spectral library to obtain a spectral angle; determining the similarity between the two spectral angles according to the size of the spectral angle, so that the type of the soil heavy metal is qualitatively analyzed; then quantitatively calculating the concentration of the soil heavy metal according to a preset linear regression equation calculation formula of spectral characteristic data and absolute concentration. The detection system comprises a flight device, an analysis system, an optical camera, a multispectral sensor and a GPS positioning system that are carried on the flight device; and a spectrum library is arranged in the analysis system. The detection system matched with the method has the advantages of rapidness, no damage and large-area detection and monitoring, and has a wide application prospect in soil pollution detection and monitoring.

Description

technical field [0001] The invention relates to the technical field of soil heavy metal detection, in particular to a soil heavy metal detection method and system. Background technique [0002] At present, the standard methods for soil heavy metal detection are still based on laboratory confirmatory analysis, such as atomic absorption spectrometry (atomic absorption spectrometry, AAS), atomic fluorescence spectrometry (atomic fluorescence spectrometry, AFS), inductively coupled plasma emission spectrometry ( induced coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (induced coupled plasma mass spectrometry, ICP-MS), wavelength dispersion X-ray fluorescence spectrometry (wavelength dispersion X-ray fluorescence, WDXRF), etc. However, the above methods require complex and time-consuming sample preparation, digestion or extraction, or large instrument size and complex and sophisticated hardware configuration, which cannot be us...

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 王紫尹鹏麦少珠
Owner GUANGZHOU HUAQING ENVIRONMENT MONITORING CO LTD
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