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Soil anaerobic leaching method and device thereof

A leaching and soil technology, applied in the field of simple soil anaerobic leaching method and its device, can solve the problems of loss of soil element reducing substances, lengthy leaching process, complicated leaching steps, etc. Good effect and simple structure

Inactive Publication Date: 2008-12-17
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The leaching steps of some soil substances, especially reducing substances, are complicated and heavy, and are limited to laboratory operations, and there are oxidation problems in the transportation of soil samples after collection.
In addition, due to the lengthy leaching process and the aerobic conditions, the traditional method often leads to the loss of soil elements, especially reducing substances, due to oxidation during the leaching process.

Method used

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  • Soil anaerobic leaching method and device thereof
  • Soil anaerobic leaching method and device thereof
  • Soil anaerobic leaching method and device thereof

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Experimental program
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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] Soil anaerobic extraction method:

[0020] During leaching, first sample tube 1 is weighed together with rubber cap 9 (m 1 ); secondly, pull out the hole rubber plug 3 provided at the front end of the sample tube 1, push the soil sample into the sample tube 1, and press the soil sample tightly on the piston of the sample tube 1 during the sample injection process, and plug the hole rubber plug 3 at the same time after sample injection Cover rubber cap 9 and weigh (m 2 ), the mass difference between the two weighings (m 2 -m 1 ) is the soil quality (m); finally connect the liquid injection pipe 6 that injects the leaching solution and the gas injection pipe 5 that feeds the gas through the tee 7, and first rotate the double-hole cock 8 to make the sample pipe 1 communicate with the liquid injection pipe 6 , advance the plunger of liquid injection pi...

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Abstract

The invention relates to soil extract, in particular to a simple and anaerobic soil extraction method which can be used in laboratories or in the open and a device thereof; during extraction, a sample is pushed into a sample hose; and then the sample hose is connected with a liquid filling tube which is filled with extract liquid and an air filling tube which is filled with air through a tee junction; after aeration and extraction, the sample hose is taken down and oscillated; during filtering, the sample hose is connected with a syringe-film evaporator which is connected with a liquid collecting tube through a draught tube; a piston of the sample hose is pushed so as to carry out a filtering process; the filtrate enters the liquid collecting tube immediately; the filtrate in the liquid collecting tube is the sample after anaerobic extraction. The soil extraction method of the invention has simple structure, convenient operation and wide application, is economical and practical; the quantity and the intensity of liquid injection can be regulated and controlled; the application is wide and the extract on a plurality of reducing substances and other substances in the soil can be carried out according to requirements.

Description

technical field [0001] The invention relates to soil leaching, in particular to a simple soil anaerobic leaching method and a device thereof which can be used in a laboratory or in the field. Background technique [0002] When people study soil elements, they need to extract and measure soil elements according to different research purposes. The leaching steps of some soil substances, especially the reducing substances, are complex and labor-intensive, and are limited to laboratory operations, and there are oxidation problems in the transportation of soil samples after collection. In addition, due to the lengthy leaching process and the aerobic conditions of the traditional method, soil elements, especially reducing substances, are often oxidized and lost during the leaching process. Therefore, people hope to establish a kind of simple and easy soil extraction device that can carry out anaerobic operation in the field, to overcome above-mentioned defect. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/00G01N1/28
Inventor 迟光宇陈欣赵牧秋史奕李德文
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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