Shipborne microplastic stratified sampling device

Abstract

The invention relates to the technical field of environmental protection of ocean and specifically relates to a shipborne microplastic stratified sampling device. The device comprises a water pumpingdevice and a sampler, wherein the water pumping device is connected with the sampler through a connecting pipeline, a gate valve, a pressure meter, a flow meter and a check valve are sequentially arranged on the connecting pipeline, the sampler comprises multiple sampling units, each sampling unit corresponds to one sampling water layer, a water filtering unit is arranged on each sampling unit andis provided with an inner coarse filtration net, a fine filtration part and an outer coarse filtration assembly from inside to outside sequentially, the outer coarse filtration assembly comprises a first coarse filtration net and a second coarse filtration net, the fine filtration part is arranged between the inner coarse filtration net and the first coarse filtration net, and the second coarse filtration net is arranged at the outermost end. Direct extraction of multiple water-layer microplastic samples can be realized, the blank of a microplastic sampling technology is filled up, and the sampling accuracy is high.

Description

technical field [0001] The invention relates to the technical field of marine environmental protection, in particular to a ship-borne microplastic layered sampling device. Background technique [0002] Microplastics are small particulate matter with a particle size of less than 5mm, which are widely distributed in oceans, lakes and rivers. In the field of marine environmental protection, stratified sampling and identification of microplastics in seawater at different depths are often required. In the prior art, the water body microplastic sample collection method is usually to collect water samples from different water layers (the volume of each layer of water samples is greater than 5 liters), and then pass through a pumping device and a filter membrane with a small pore size (with a pore size between 30 μm and 1 mm). ) extraction by suction filtration, but in large-area and multi-site aerial survey surveys, this type of method will consume a lot of manpower and material r...

AI Technical Summary

Problems solved by technology

In the prior art, water microplastic samples are usually collected by first collecting water samples from different water layers (the volume of each layer of water samples is greater than 5 liters), and then passing through a pumping device and a filter membrane with a small pore size (pore size between 30 μm and 1 mm). ) suction filtration extraction, but in large-area and multi-site aerial survey surveys, this method will cost a lot of manpower and material resources

If the direct extraction of multi-water layer microplastic samples can be realized, it will not only improve the sampling efficiency, but also reduce the sampling cost, but there is no device or method to achieve the above functions

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