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首页 » 杰博新闻中心 » 杰博资讯 » 行业资讯 » 如何测定土壤中的碳 You are here: Home » Jiebo News Center » Jiebo News » Industry News » How to determine carbon in soil

How to measure carbon in soil

】 Article Source: Editor-in-Chief: Release time: 2019-10-18 10:49:00 Hits: - [Big Middle Small]
In recent years, with the rapid development of industrialization and urbanization, soil pollution in the country has exceeded standards, so the detection of carbon in geological soil samples has received more and more attention. The high-frequency infrared carbon-sulfur analyzer accurately analyzes the carbon content of soil (total carbon content, organic carbon content, inorganic carbon content) with the characteristics of fast analysis and simple operation.


未标题-1 (3)

The soil samples are all low electromagnetic substances. According to traditional methods, the electromagnetic induction eddy current generated during the combustion process cannot meet the requirements of experimental carbon release. The principle of the infrared absorption method of the high-frequency infrared carbon and sulfur analyzer avoids the sample liquid conversion link in the traditional method, which is a good solution to the shortcomings, which can effectively improve the detection efficiency and reduce the measurement cost. The infrared carbon-sulfur analyzer uses high-frequency induction to heat the soil sample under oxygen-enriched conditions, converts the released carbon into CO2 gas, and detects the carbon in the sample by using an infrared absorption band of 4.26 μm. After measuring the total carbon content, the soil sample was treated with hydrochloric acid, and the content of organic carbon was measured after drying. The difference between the total carbon and the organic carbon was the content of inorganic carbon.
The test method for determining the carbon content in soil samples by the high-frequency infrared carbon and sulfur analyzer is as follows:
1.Instrument : high-frequency infrared carbon and sulfur analyzer preheating is stable
2. Flux used in the test: (tungsten particles, tin particles, and pure iron). Pure iron has the characteristic induction of high electromagnetic lines. Tin particles can increase the magnetic permeability of the sample. Tungsten particles can increase the heat capacity. The order of addition is pure iron, Samples, tungsten particles, tin particles, which is easy to fully burn the sample
3. Weighing of the sample: between 0.1-0.2g of sample, 1.5g of tungsten particles, tin particles, 0.2-0.5g of pure iron,
4. Oxygen (purity> 99.5%)
5. Ceramic crucible size 25 * 25mm (after burning in a muffle furnace at about 1000 degrees Celsius for 4 hours and then cooling and storing in a desiccator)
Through the above experimental methods, the high-frequency infrared carbon-sulfur analyzer measures the carbon content in soil. The method is simple and easy to implement, and the measurement results are consistent with the standard values.
This provides the possibility to determine the carbon content of large-scale soil samples in the future.
行业资讯 Keywords in this article: Industry information

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