Sampling device used for suspended substances in surface water body and having suspending wings

Abstract

The invention discloses a sampling device used for suspended substances in a surface water body and having suspending wings, which comprises: a rectangular framework, four swing rods, a plurality of floaters, two weights, four ropes, a drafting rope, a leak box, netting, a plurality of sample collecting bags, and two suspending wings. The suspending wings are fixedly arranged on two side surfacesof the leak box in a mirror manner; the head of each suspending wing has an arc shape and the suspending wing is thinned gradually from the head to the tail. The included angle between a line betweenfrom the head to the tail and the bottom surface of the leak box is 15-20 degrees and is towards direction of a horn mouth. The sampling device can collect samples in a standing position for a large area conveniently and rapidly and has an auto-suspending function. The net mouth is vertical to water surface, so that water level height is maintained automatically and manual control on the exposureheight of the net mouth above water surface is unnecessary. The device can be sued for accurately calculating the quantity of micro-plastic in a water body unit. The sample bags can be quickly detached and replaced.

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 suspension wing. 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...

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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