T/SDDZ 003-2024 Determination of Organic Matter Content in Soil by High Frequency Ignition Infrared Absorption Method

Scope

Main technical content: Soil organic matter generally refers to substances derived from life in the soil. Soil organic matter is an important component of the solid phase of the soil and one of the main sources of plant nutrition. It can promote the growth and development of plants, improve the physical properties of the soil, promote the activities of microorganisms and soil organisms, and promote the decomposition of nutrient elements in the soil, enhancing the soil's fertilizer retention and buffering capacity. It is closely related to the structure, aeration, permeability, adsorption, and buffering capacity of the soil. Under the same or similar conditions, within a certain range of content, the content of organic matter is positively correlated with the level of soil fertility. The content of organic matter in the soil is an important indicator for evaluating land quality. This document provides a method for determining soil organic matter using a high-frequency infrared carbon-sulfur analyzer, and specifies technical indicators such as sample pretreatment, method detection limit, measurement range, and precision, providing a reliable quality and technical guarantee for the detection of soil organic matter.

Development Information

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