Capillary action-based in situ sampling-microextraction device for allelochemicals in soil

A technology of capillary action and extraction device, which is applied in the direction of sampling device, measuring device, instrument, etc.
CN109342111AInactive Publication Date: 2019-02-15HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2019-02-15
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a capillary action-based in situ sampling-microextraction device for allelochemicals in soil, and belongs to the technical field of plant root exudates and allelochemicals sampling. In the invention, the drill bit is connected to one end of a sampling tube through threads, the tube wall of the sampling tube has a micro hole. A double-head stud is a sealing rubber double-sided thread cap at the other end of the sampling tube. The other end of the sampling tube is connected to one end of the double-head stud through the threads, and the other end of the double-head stud isconnected to a tail tube through the threads. A channel is arranged in the middle of the tail tube, and a sealed end cover is arranged at the outer end of the tail tube. The sampling tube is made ofhigh-wetting alumina, and is repeatedly heated and sintered into a microporous ceramic sampling tube with a capillary diameter of 0.05-100um. The in situ sampling-microextraction device has strong capillary action, and liquid flows into the tube from micropores, which facilitates periodic microextraction, and qualitative and quantitative analysis of the allelochemicals in the soil.
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Description

technical field

[0001] The invention relates to an in-situ sampling-microextraction device for soil allelochemicals based on capillary action, and belongs to the technical field of sampling plant root exudates and allelochemicals. Background technique

[0002] The release pathways of plant allelochemicals mainly include: root secretion to the outside world, plant rain and fog leaching and volatilization; plant or residue decomposition under the action of soil physical and chemical factors and microorganisms; pollen dispersal and seed germination. In order to study the impact of environmental factors such as root exudates species and concentration, stress on root exudates, allelochemical substances and allelopathic effects in root exudates, people have designed many collection methods for root exudates, mainly containing: solution Culture collection, matrix culture (vermiculite culture, sand culture, agar culture) collection, soil culture collection, automatic continuous coll...

Claims

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