Sampling device for in-situ enrichment of deep-sea microorganisms

Abstract

The invention discloses a sampling device for in-situ enrichment of deep-sea microorganisms, which comprises a sampling cylinder. The sampling cylinder includes a cylindrical cylinder body and cylinder covers on the front and rear sides. There is a through hole, which is connected to the front filter port through a one-way valve, and a through hole is provided at the bottom of the rear cover, which is connected to the inlet end of the deep-water pump through a one-way valve; the bottom of the deep-water pump is fixed on the main frame by bolts Above; the deep water pump is driven by a deep water motor; there are several stacked filter membrane modules in the cylinder, the filter membrane modules include the upper filter membrane support and the lower filter membrane support connected by bolts, the bottom surface of the upper filter membrane support and the lower filter membrane A biofiltration membrane is arranged between the top surfaces of the membrane supports. The invention can realize the in-situ enrichment sampling of deep-sea microorganisms, and can keep the sampling process free from pollution and pressure mutation, and has the advantages of simple structure, convenient operation and the like.

Description

technical field [0001] The invention relates to a sampling device, in particular to a sampling device for in-situ enrichment of deep-sea microorganisms. Background technique [0002] The extreme environment of low temperature and high pressure in the deep sea has created its unique biological resources. Previous studies have shown that deep sea microorganisms have extremely high abundance, activity, composition and functional diversity, and have formed special species, gene types and Metabolites have important scientific research and economic value. Traditional deep-sea microbial sampling devices generally use simple open containers, which are placed in a predetermined depth for sampling and recovery. This solution is limited by the volume of the sampling container, and the number of microorganisms that can be collected at a time is very limited. In addition, the sampling container in the traditional solution is filled with air before it is put into the predetermined depth...

AI Technical Summary

Problems solved by technology

This solution is limited by the volume of the sampling container, and the number of microorganisms that can be collected at a time is very limited

In addition, the sampling container in the traditional scheme is filled with air before it is put into the predetermined depth, and the moment it is opened, the sample will have a huge pressure change, which may lead to the decomposition and loss of some components

Some improved sampler solutions avoid sudden pressure changes during sampling by pre-filling the container with distilled water and keeping the container open during lowering, but this in turn causes a small amount of seawater from other depths to enter the container and contaminate the sample

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