Sampler for sediment pore water sampling in rivers or lakes

Abstract

The invention provides a sampler for sediment pore water sampling in rivers or lakes. The lower end of a sampling tube is fixedly connected with a conical head, an internal thread port is arranged at the upper end of the sampling tube, and a screen mesh area is arranged at the lower part of the sampling tube. The sampling tube inner the screen mesh area is provided with line cutting seams. The sampling tube outer wall in the screen mesh area is covered with stainless steel screen meshes, and the lower end of a T- shaped handle is plugged in the upper end of the sampling tube. The pore water sampler has a maximum sampling depth of 3.5 m relative to the maximum sampling depth of the common interstitial water sampler of about 80-100 cm, so that comprehensiveness of pore water sampling investigation work of the bottom sediments in the rivers or lakes can be improved. Through use of the sampler, disturbance on the pore water is smaller, undisturbedness of the pore water of the bottom sediments in different depth of the rivers or lakes can be greatly maintained, and the accuracy of the sample analysis of the pore water of the sediments can be improved. The sampler has the advantages of small and exquisite volume, simple operation and adjustable sampling depth.

Description

Technical field [0001] The invention relates to a sampler for sampling pore water of river or lake sediments, and belongs to the technical field of water samplers. Background technique [0002] Important physical, chemical, and biological reactions occur at and near the lake sediment-water interface, frequent material exchange and transportation, and many important lake environmental problems such as eutrophication of water bodies, self-purification of pollutants and secondary Pollution, etc., all originate from the sediment-water interface and various geochemical processes in its vicinity have important theoretical and practical significance for revealing the evolution of modern lake environment, commenting on the potential dangers of secondary pollution of sediments, and protecting water resources. The study of sediment pore water is a new field at home and abroad, so the research methods and sampling equipment are still in the exploratory stage. [0003] Pore ​​water extraction...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problems that the existing sediment pore water sampler has a small sampling depth, cannot continuously sample, and has poor sample retention, and then provides a sampler for sampling river or lake sediment pore water

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