A kind of marine microsurface sampling method

Abstract

A marine microsurface sampling method, comprising: step S1: placing the sampling device at a working position above the sea surface; step S2; determining the lowest position, the highest position and the running speed of the collection board; step S3: driving the collection board perpendicular to the sea surface by the lifting system Face down to the lowest position; Step S4: The lifting system drives the collection plate to move upwards to the highest position perpendicular to the sea surface. When the collection plate moves to the highest position, the driving mechanism drives the liquid collection tank to rotate, so that the top of the liquid collection tank is close to the glass plate. One side is close to the glass plate; Step S5: The lifting system drives the collection plate to move downward perpendicular to the sea surface to the lowest position. During the descent, the side of the top of the liquid collection tank that is close to the glass plate scrapes the liquid on the surface of the glass plate for liquid collection. The liquid is collected into the collection tank, and the liquid in the collection tank is diverted into the collection bottle; Step S6: Stop sampling; this sampling method has a high degree of automation, high sampling efficiency, and ideal sampling thickness, which can meet the needs of scientists.

Description

technical field [0001] The invention relates to the technical field of micro-surface sampling, in particular to a marine micro-surface sampling method. Background technique [0002] The ocean microsurface is a thin layer between the atmosphere and the ocean surface, with a thickness of about 30-200 microns. It has unique physical, chemical, and biological characteristics and can enrich various substances. The determination of various parameters in the ocean microsurface is of special significance for the calculation of material flux, climate change prediction, environmental status forecast, and marine biological monitoring. Related research has received long-term attention in the field of marine science. High-quality sampling is a prerequisite for studying the ocean microsurface, and it is also a difficult point in the study of the ocean microsurface. [0003] At present, the sampling methods for the microsurface mainly include the screen method, the glass plate method, and...

AI Technical Summary

Problems solved by technology

The drum method is to coat the surface of the roller (diameter 46cm, length 61cm) with a hydrophilic glass fiber coating. The height of the roller contacting the water surface can be adjusted. The motor is connected to the reducer to adjust the speed of the roller. The roller moves slowly in the water to collect a thickness of 50-100μm. The water layer, and finally use the fixed scraper to scrape the water into the sample bottle. The sampling thickness of the rotary drum sampler is ideal, but it cannot work in harsh sea conditions

[0004] Existing patents, such as a Chinese patent with a publication date of 2019.08.23 and a publication number of CN110160840A, disclose a glass plate sampler and its sampling method for collecting micro-surface water samples, but the sampling process requires manual operation, which is complicated and complicated. During the process, the water entry angle, water exit angle and running speed are difficult to guarantee, the stability is poor, the sampling quality is difficult to guarantee, and the degree of automation is low, the sampling efficiency is low, and it is not suitable for working under harsh working conditions.

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