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Method for representing 17beta-estradiol soil column leaching process

An estradiol, soil column technology, applied in the fields of environmental science and environmental engineering

Inactive Publication Date: 2012-12-19
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

The CA model has been widely used in complex system modeling fields such as forest fire simulation, tumor cell growth process modeling, and cultivated land expansion dynamics simulation, but there are few reports on the CA model simulating the migration and transformation behavior of estrogen in soil.

Method used

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  • Method for representing 17beta-estradiol soil column leaching process
  • Method for representing 17beta-estradiol soil column leaching process
  • Method for representing 17beta-estradiol soil column leaching process

Examples

Experimental program
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Effect test

Embodiment 1

[0086] Now take the E2 soil column leaching experiment carried out in a laboratory as an example. The experimental soil samples were collected from the surface soil of 0-10cm in an ecological garden in Beijing. The fresh soil was evenly filled in such as attached figure 1 The shown is in a 10cm high, 3.5cm diameter soil column device. After uniformly adding 100 μg of E2 standard sample to the surface of the soil column, use 0.01mol / L CaCl 2 The solution is leached, the leaching flow rate is 0.0018cm / s, the flow rate is 1.5L / d and the leachate is collected, the concentration of E2 and E1 in the leachate is measured, and the cumulative leaching amount is calculated. figure 2 is the experimental result. When the remaining amount of E2 and E1 in the soil column is less than 2% of the added amount after leaching to 6L, it can be considered to be completely leached out.

[0087] The specific reproduction method includes the following steps:

[0088] 1. Set the cell set size, bo...

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Abstract

The invention relates to a method for representing a 17beta-estradiol (E2) soil column leaching process, and belongs to the field of environmental science and environmental engineering subject. The method includes steps of 1), filling soil samples into a soil column apparatus uniformly, leaching after uniformly adding E2 standard samples on the surface layer of a soil column, and measuring concentrations of E2 and E1 in leachate and calculating accumulative leaching quantity; 2), setting size and boundary of cell sets and initializing cell status; 3), making an evolution rule according to a micromechanism; 4) calculating parameters required for a model; and 5), performing iterative calculation. By the method, advantages of flexibility and diversity of a CA (cellular automata) model are utilized, and the CA model capable of simulating the E2 soil column leaching process is established according to the micromechanism that the E2 is subjected to adsorption, desorption, degradation and migration in the soil column leaching process, so that dynamically visual representation of the E2 in the soil column leaching process is achieved.

Description

technical field [0001] The present invention relates to a technique for reproducing the migration and transformation of pollutants in the soil column leaching process, in particular to a method for reproducing the 17β-estradiol (E2) soil column leaching process based on a cellular automata model. The method can provide important technical guidance for predicting and controlling the migration and transformation of E2 in soil, and belongs to the field of environmental science and environmental engineering. Background technique [0002] In recent years, natural estrogens such as estrone (E1) and 17β-estradiol (E2) have received extensive attention as typical environmental endocrine disruptors. Then migrate and transform in the environment. At present, technical research on simulating and controlling the migration and transformation of organic pollutants in soil has become the focus. The soil column leaching experiment under laboratory conditions is an important means to study...

Claims

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Application Information

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IPC IPC(8): G06F19/00G01N33/24
Inventor 史江红陈庆彩刘晓薇吴唯张晖薄婷
Owner BEIJING NORMAL UNIVERSITY
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