Under-ice surface layer water body in-situ layered collection device and sampling method

Abstract

The invention discloses an under-ice surface layer water body in-situ layering collection device and a sampling method. The collection device comprises a fixing device, a distance measuring device arranged at the upper part of the fixing device, and a layering device arranged at the bottom of the fixing device, the distance measuring device is in sliding connection with the fixing device so as to measure the depths of different water samples in real time; a plurality of flow guide pieces are arranged in the layering device, one ends of the flow guide pieces are used for correspondingly collecting water samples at different depths, and the other ends of the flow guide pieces are used for guiding the water samples into the collecting device. Through the mode, the water area stratified sampling device is convenient to carry and operate, high-precision stratified sampling of a water area under an ice layer can be completed only through one device, the water depth of each sample can be read in time, and subsequent experiments are facilitated.

Description

technical field [0001] The invention relates to the field of water quality environment monitoring and sampling, in particular to an in-situ layered collection device and sampling method for subglacial surface water. Background technique [0002] As an essential element of human existence, water is of great significance to every country. The state has formulated regulations for regular water environment quality assessment, forecasting and forecasting of water areas. [0003] In recent years, scholars at home and abroad have successively found that during the freezing process of rivers, reservoirs, lakes, and oceans in winter, the pollutants dissolved in the frozen water body will gradually discharge pollutants to the water body below it as the ice layer condenses downward, that is, It is the "salt removal effect" in the traditional sense. This phenomenon leads to an obvious stratification effect in the surface water quality of the ice-water interface. [0004] However, lim...

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Problems solved by technology

[0006] Although this technology simplifies the collection equipment and is easy to carry, the accuracy of the device for taking water in layers is not high, and an additional distance measuring device is required to accurately record the water depth of the corresponding water sample, and an additional fixing device is required to fix the collection device , to ensure that the collection device is placed vertically in the water

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