Experimental device for measuring content of carbonate in soil and operation method

Abstract

The invention discloses an experimental device for measuring the content of carbonate in soil and an operation method, the device comprises a gas production device and a gas collecting and measuring device which are connected; the gas production device comprises a suction flask, a large rubber plug installed on the suction flask, an acid burette and a rubber tube; the gas collecting and measuringdevice comprises a left gas measuring tube and a right gas measuring tube, hoses sleeve tube orifices at the bottoms of the left gas measuring tube and the right gas measuring tube respectively, and are connected through a three-way tube with a piston, and a beaker is arranged under the three-way tube; and the gas production device is connected with the gas collection measuring device through a U-shaped test tube. The device disclosed by the invention adopts common instruments in a common chemical laboratory as parts, is simple in structure, easy to assemble, high in air tightness, convenientin experimental operation and accurate and stable in experimental result, and can be well applied to measuring the content of the carbonate in the soil.

Description

technical field [0001] The invention relates to the technical field of soil research, in particular to an experimental device and an operation method for measuring soil carbonate content in an ordinary chemical laboratory. Background technique [0002] In soil research, it is often necessary to determine the physical and chemical properties of the soil, and the soil carbonate content is often determined first in soil testing, because soil carbonate is related to soil pH, the existing form and availability of soil nutrients, and soil Colloidal properties are closely related, so soil carbonate content is one of the important basis for judging the basic properties and fertility level of soil. In addition, in soil analysis work, soil carbonate content is the basis for selecting analysis methods when determining multiple items. Inorganic carbonates in soil are mainly insoluble calcite (CaCO 3 ) and dolomite (CaCO 3 · MgCO 3 ), generally calcite-based, so the determination of ...

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Problems solved by technology

However, the currently disclosed devices have many problems in equipment assembly or operation methods. The devices use a large number of parts, which are not common in ordinary chemical laboratories. It is difficult to collect and assemble parts. Some parts need to be customized, and the purchase cost is high. The airtightness of the device is not easy to guarantee, the corresponding operation method is cumbersome and difficult to get started, and the explanation of the operation steps and test principles is not complete and detailed, which greatly limits the soil research work carried out by the experimenters of ordinary chemical laboratories

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