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Method for detecting thioether compounds in soil

A compound and soil technology, applied in the field of soil chemical analysis, can solve the problems of cumbersome methods for volatile sulfur compounds, achieve accurate and reliable detection results, and have strong practical application value

Active Publication Date: 2018-05-15
YUNNAN AGRICULTURAL UNIVERSITY
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Problems solved by technology

However, current methods for detecting volatile sulfur compounds in soil are cumbersome
At present, there is no quantitative detection method for thioether compounds in soil

Method used

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  • Method for detecting thioether compounds in soil

Examples

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Embodiment 1

[0032] This example provides a method for detecting diallyl disulfide in garlic rhizosphere soil. In the following method:

[0033] The soil to be tested is collected by the following method: collect the garlic rhizosphere soil that needs to be tested, put it into a ziplock bag, and put it in an ice box or refrigerator immediately after sealing it. The temperature is controlled at 4°C. The time is 6 hours.

[0034] The blank soil is prepared by the following method: take the soil to be tested and bake it at 50°C for 12 hours to volatilize all the thioether compounds in it. At this time, the measured soil moisture content is 18%, and the content of diallyl disulfide in the soil moisture can be calculated accordingly.

[0035] The soil solution to be tested is prepared by the following method: Weigh 2kg of the soil to be tested, and disperse it in 10 glass petri dishes, put 200g of soil in each petri dish, put it in a 30L glass container, cover it with glass Cover, the top of...

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Abstract

The invention relates to a method for detecting thioether compounds in soil. The method is characterized in that the thioether compounds in a to-be-detected soil solution are detected by using a gas chromatography-mass spectrometry method; the to-be-detected soil solution is prepared according to the method comprising the following steps: putting to-be-detected soil into closed vessels in a scattering manner, wherein the tops of the closed vessel are connected with a sample tube filled with adsorption resin and an emptying tube; opening an air pump positioned at the other end of the sample tube, enabling the thioether compounds in the to-be-detected soil to sufficiently volatilize and to be absorbed on the adsorption resin in the sample tube; then leaching the adsorption resin with normalhexane, collecting leacheate and concentrating to obtain the to-be-detected soil solution. The method provided by the invention can be used for detecting mostly soil containing the thioether compoundsand is preferably suitable for detecting rhizosphere soil of allium sativum. The detection result obtained according to the method provided by the invention is accurate and reliable and has high actual application value.

Description

technical field [0001] The invention relates to the field of soil chemical analysis, in particular to a method for detecting sulfide compounds in soil. Background technique [0002] Soil chemical treatment is one of the important methods to control soil-borne pathogens. Thioether compounds are commonly used agents for soil fumigation and have good bactericidal effects. At the same time, thioether compounds are important components in garlic and other Liliaceae Allium crops. The roots of Liliaceae Allium crops can secrete thioether compounds into the soil, thereby inhibiting soil-borne pathogens. Therefore, Detection of thioether compounds in soil is an important step in the study of thioether compounds inhibiting soil-borne pathogens. [0003] Patent document CN104597143A discloses a method for detecting volatile organic compounds in soil. By analyzing volatile organic compounds in soil, a relatively comprehensive organic component in soil can be obtained. Patent document...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06G01N30/86
CPCG01N30/06G01N30/8634G01N30/88
Inventor 刘屹湘吴家庆朱书生张贺何依依郑凯元杨敏黄惠川梅馨月杜飞何霞红李成云朱有勇
Owner YUNNAN AGRICULTURAL UNIVERSITY
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