Suspended substance sampling device with rudder for surface layer water body

Abstract

The invention discloses a device for sampling suspended matter in surface water with a rudder, comprising: a rectangular frame, four swing rods, a plurality of floats, two counterweights, four cables, a tow rope, and a leaky box. Net clothes, multiple sampling bags and rudders. Compared with the prior art, the present invention can conveniently and quickly collect samples by large-area station trawling. It has the function of self-suspension. Artificially controlling the floating height of the net port above the water surface can be used to accurately calculate the stock of microplastics per unit of water. Sample packs can be quickly removed and replaced. The rudder keeps the leaky box and its net from spinning in the water.

Description

technical field [0001] The invention relates to the technical field of marine scientific research, in particular to a sampling device for suspended matter in surface water with a rudder. Background technique [0002] Plastic waste is mostly stable long-chain polymers, which are not easy to degrade in the natural environment, but can be broken into tiny plastic particles under the action of light, tide, temperature difference or wind erosion, and become microplastic waste. Microplastics refer to plastic fibers, particles or films with a size smaller than 5 mm. Microplastics in the water environment have the characteristics of huge quantity, fast growth rate, enrichment and release of toxic and harmful substances, and can endanger human health along the food chain, which has attracted widespread attention. Research on microplastics in water bodies in my country is still in the initial stage of exploration, and only sporadic surveys and samplings have been carried out in certa...

AI Technical Summary

Problems solved by technology

At present, large-scale continuous sampling of surface water microplastics mostly uses plankton nets, and the plankton nets are designed as submersible nets with round openings, small diameters, and small water inflows. The survey ship will be torn if the speed is slightly higher. ; and it is difficult to control the water layer when sampling microplastics in the surface water body, and the water intake at the network port has a large deviation, which makes it difficult to ensure the accuracy of sampling

At present, there is a lack of a special net suitable for large-area continuous and accurate sampling of microplastics in surface water

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