Patent ID: 9518896
Filing Date: 2016-12-13
CPC Classification: G01N

Claim Text:
1. A gradually-ascending spiraled passive sampler for measuring sediment-water diffusion flux of organic pollutants, characterized in that: it comprises a sediment pore-water sampler and a water sampler arranged above the sediment pore-water sampler, wherein a plurality of sediment sampling units are vertically arranged in the sediment pore-water sampler, and the water sampler is provided with a plurality of water sampling units arranged transversely along the vertical direction in sequence, wherein each of the plurality of sediment sampling units is a grid-shaped sediment sampling plate, wherein the sampling plate comprises a partition board, filter membranes arranged at two sides of the partition board respectively, and first porous clamping plates arranged outside the filter membrane, further wherein a plurality of long-striped openings are transversely formed in the partition board in a separated and parallel manner and adsorption films are arranged in the long-striped openings.