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Soil lead content measurement method using visible and near-infrared spectroscopy technology

A technology of near-infrared spectroscopy and measurement method, which is applied in the field of soil lead content measurement, can solve the problems of rapid determination that have not been reported, and achieve the effect of faster determination and simple calculation method

Inactive Publication Date: 2015-04-08
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0008] At present, there is no report on the rapid determination of lead content in soil with visible light and near infrared in the tailings area.

Method used

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  • Soil lead content measurement method using visible and near-infrared spectroscopy technology
  • Soil lead content measurement method using visible and near-infrared spectroscopy technology
  • Soil lead content measurement method using visible and near-infrared spectroscopy technology

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Experimental program
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Embodiment

[0038] Such as figure 1 As shown, this implementation includes the following steps:

[0039] 1. Collection of soil samples: Taking the tailings of molybdenum mine in Jinduicheng, Hua County, Shaanxi Province as the research area, according to the mining situation of the mining area and the coverage of surface plants, the entire mining area was divided into 10 plots, and each plot was randomly distributed according to the plum blossom method. 6 soil samples were collected, a total of 60 soil samples were collected, and soil surface samples (0-20cm) were collected. The standard for selecting sampling points is to ensure that the soil at each sampling point is within a pure pixel (30 m × 30 m) of the Hyperion hyperspectral satellite image. Fill out the sample label.

[0040] After the soil samples were brought back to the laboratory, debris, pebbles and other foreign matter were removed, air-dried and passed through a 2mm nylon sieve. The screened soil samples were equally div...

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Abstract

The invention discloses a soil lead content measurement method using a visible and near-infrared spectroscopy technology. According to the soil lead content measurement method disclosed by the invention, quantitative estimation for the content of soil lead in a tailing area is realized by virtue of spectrum data, the measurement does not require direct contact with a sample and is complete nondestructive measurement, and moreover, an operation process and a calculation method of the content of the soil lead are simple; the method disclosed by the invention is based on a support vector machine, the computer program running time of the measurement time is less than 10 minutes, and the measurement speed is greatly increased compared with that, which needs at least one hour of cumbersome detection operation process, in a traditional chlorophyll content detection method; the soil lead content measurement method disclosed by the invention is free of environment pollution.

Description

Technical field: [0001] The invention relates to the fields of spectral data processing and soil detection, in particular to a soil lead content measurement method using visible light near-infrared spectroscopy technology. Background technique [0002] Soil heavy metal pollution will lead to a decline in agricultural production and enter the food chain, which will endanger human health. Lead (Pb) is one of the most dangerous metals for human life. Lead pollution has been found to affect seed germination and has widespread adverse effects on plant growth and metabolism. Once entering the leaves, lead elements can cause adverse physiological effects on plants by blocking stomata or disrupting metabolic pathways. In addition, excessive lead concentration reduces the concentration of chlorophyll and reduces the yield of crops. Therefore, accurate and timely measurement of lead content in soil is of great significance for environmental protection and public health. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/359
Inventor 吕杰
Owner XIAN UNIV OF SCI & TECH
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