Soil organic matter analyzer and analysis method

Abstract

The invention discloses a soil organic matter analyzer and analysis method. The analyzer comprises an automatic digestion part, a solution transfer device, a multi-port valve, an injector, a peristaltic pump, a titration flask and multiple solution flasks; the automatic digestion part is used for carrying multiple test tubes containing soil samples and heating the test tubes; the solution transferdevice is located over the automatic digestion part and used for moving to the position over the corresponding test tube and dropwise adding a solution into the test tube through a feeding syringe; the two ends of the solution transfer device are communicated with the feeding syringe and a water inlet of the peristaltic pump respectively, and a water outlet of the peristaltic pump is communicatedwith an inlet of the titration flask; multiple central ports of the multi-port valve can be communicated with any one single edge port; the multiple central ports are communicated with the injector;and one single edge port is communicated with a second port of the solution transfer device, one single edge port is communicated with the inlet of the titration flask, and the remaining single edge ports are communicated with the various solution flasks respectively. According to the device and method, the condition that injuries are caused to operation personnel in the analysis process can be avoided.

Description

technical field [0001] The invention relates to the field of soil content analysis, in particular to a soil organic matter analyzer and an analysis method. Background technique [0002] The determination of organic matter content in soil is an important item in soil physical and chemical analysis. This indicator is one of the important indicators to measure the level of soil fertility. It can promote the formation of soil structure, improve the conditions of soil physical, chemical and biological processes, and improve soil quality. Absorption performance and buffer performance, at the same time it itself contains various nutrients needed by plants, such as carbon, nitrogen, phosphorus, sulfur and so on. Therefore, in order to understand the fertility status of the soil, it is necessary to measure the content of soil organic matter. [0003] The principles of existing methods for measuring soil organic matter content are as follows: [0004] Under heating conditions, a cer...

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Problems solved by technology

[0010] The above methods are relatively complicated to operate, and operators have to come into contact with substances that are highly harmful to the human body, such as strong oxidants (potassium dichromate) and strong acids (concentrated sulfuric acid), and the use of high-temperature digestion methods is likely to cause harm to operators

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