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Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area

A technology of harmful elements and measurement methods, which is applied in the fields of optical technology and resources and environment, can solve the problems that are difficult to apply to the monitoring of toxic and harmful elements in the reclaimed soil of mining areas, and achieve more targeted monitoring, targeted calculations, and cost savings. Effect

Inactive Publication Date: 2015-05-06
CHINA UNIV OF MINING & TECH
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Problems solved by technology

Therefore, the previous method of estimating soil toxic and harmful elements by collecting field spectral data and performing data inversion is difficult to apply to the monitoring of toxic and harmful elements in reclaimed soil in mining areas

Method used

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  • Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area
  • Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area
  • Indoor spectral layered measuring method for poisonous and harmful elements at mine reclamation area

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0027] (1) Sample collection and preparation: According to the collection principles of mixed soil samples and special soil samples, determine the sampling unit, number of sample points and sampling section of the modeling sample. In this example, the surface soil (0-20cm) of 20 sample points in the reclamation site of the mining area was selected, and the collected soil samples were mixed and then divided into about 100g by quartering. The shrunk soil samples were air-dried naturally, and foreign matter such as stones, animal and plant residues in the soil samples were removed, rolled by agate rods and passed through a 2mm nylon sieve (to remove gravel above 2mm) and then mixed. Then use an agate mortar to grind the soil samples that pass through a 2mm nylon sieve until they all pass through a 100-mesh nylon sieve (aperture 0.149mm), mix well a...

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Abstract

The invention discloses an indoor spectral layered measuring method of poisonous and harmful elements at mine reclamation area. The method comprises the following steps: collecting a modeling sample of the mine reclamation area soil, collecting the high-spectrum data of the modeling sample in a darkroom, pre-processing the high-spectrum data of the modeling sample, measuring the reference value of poisonous and harmful elements of the modeling sample, selecting the stress sensitive spectral bands with poisonous and harmful elements, building the model, evaluating the model stability and the predictive ability and using the model. Large-area rapid measurement for the mine reclamation area soil can be achieved, and the poisonous and harmful elements of the mine reclamation area soil different in depth can be quickly measured in the room due to the layered detection character of the method, the poisonous and harmful elements of the soil can be measured in a dynamic, quick, large-size and layered mode and effective data is offered for evaluating the ecological security of grains.

Description

technical field [0001] The invention belongs to the field of optical technology and resources and environment, and in particular relates to a method for rapidly stratified determination of the content of toxic and harmful elements in a mine reclamation site by using indoor hyperspectral data, chemometrics and computer statistical methods. Background technique [0002] Due to the extensive sources of filling materials for the mine reclamation site, most of them are composed of coal gangue, fly ash and domestic garbage. Therefore, during the filling and reclamation of mining areas, the filling materials will bring a large amount of pollutants into the site, which will endanger human safety through the food chain. The reclaimed soil in the mining area is artificial soil, and the composition of the soil profile includes topsoil, core soil, subsoil and filling material layers, etc., which is different from the composition of the normal soil profile. The content of toxic and harm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
Inventor 董霁红许吉仁卞正富程伟于敏
Owner CHINA UNIV OF MINING & TECH
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